forgotten dbgs

Reviewed-on: https://git.ablecorp.us/AbleOS/holey-bytes/pulls/23
Reviewed-by: mlokis <mlokis@email.com>

.cargo/config.toml

@@ -1,2 +1,4 @@
 [alias]
 xtask = "r -p xtask --"
+wasm-build = "b --target wasm32-unknown-unknown --profile=small -Zbuild-std=core,alloc -Zbuild-std-features=optimize_for_size,panic_immediate_abort -p"
+wasm-build-debug = "b --target wasm32-unknown-unknown --profile=small-dev -Zbuild-std=core,alloc -Zbuild-std-features=optimize_for_size -p"

.gitignore

@@ -1,7 +1,13 @@
+# garbage
 /target
-/hbbytecode/src/opcode.rs
-/hbbytecode/src/ops.rs
-/hblang/src/instrs.rs
-/hblang/src/disasm.rs
-/.rgignore
-rust-ice-*
+rustc-ice-*
+
+# sqlite
+db.sqlite
+db.sqlite-journal
+
+# assets
+/depell/src/*.gz
+/depell/src/*.wasm
+#**/*-sv.rs
+/bytecode/src/instrs.rs

Cargo.toml

@@ -1,17 +1,50 @@
+cargo-features = ["profile-rustflags"]
+
 [workspace]
 resolver = "2"
-members = ["hbbytecode", "hbvm", "hbxrt", "xtask", "hblang", "hbjit"]
+members = [
+	"bytecode",
+	"vm",
+	"xrt",
+	"xtask",
+	"lang",
+	"depell",
+	"depell/wasm-fmt",
+	"depell/wasm-hbc",
+	"depell/wasm-rt",
+]
+
+[workspace.dependencies]
+hbbytecode = { path = "bytecode", default-features = false }
+hbvm = { path = "vm", default-features = false }
+hbxrt = { path = "xrt" }
+hblang = { path = "lang", default-features = false }
+hbjit = { path = "jit" }
 
 [profile.release]
-strip = true
 lto = true
+#debug = true
+strip = true
 codegen-units = 1
 panic = "abort"
 
 [profile.small]
+rustflags = ["-Zfmt-debug=none", "-Zlocation-detail=none"]
 inherits = "release"
 opt-level = "z"
-strip = true
+strip = "debuginfo"
 lto = true
 codegen-units = 1
 panic = "abort"
+
+[profile.small-dev]
+inherits = "dev"
+opt-level = "z"
+strip = "debuginfo"
+panic = "abort"
+
+[profile.fuzz]
+inherits = "dev"
+debug = true
+opt-level = 3
+panic = "abort"

bytecode/Cargo.toml

@@ -2,3 +2,9 @@
 name = "hbbytecode"
 version = "0.1.0"
 edition = "2018"
+
+[features]
+default = ["disasm"]
+std = []
+disasm = ["std"]
+

bytecode/build.rs

@@ -1,19 +1,43 @@
 #![feature(iter_next_chunk)]
+
 use std::{collections::HashSet, fmt::Write};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("cargo:rerun-if-changed=build.rs");
-    println!("cargo:rerun-if-changed=../hbbytecode/instructions.in");
+    println!("cargo:rerun-if-changed=instructions.in");
 
-    gen_instrs()?;
+    let mut generated = String::new();
+    gen_instrs(&mut generated)?;
+    std::fs::write("src/instrs.rs", generated)?;
 
     Ok(())
 }
 
-fn gen_instrs() -> Result<(), Box<dyn std::error::Error>> {
-    let mut generated = String::new();
+fn gen_instrs(generated: &mut String) -> Result<(), Box<dyn std::error::Error>> {
+    writeln!(generated, "#![expect(dead_code)]")?;
+    writeln!(generated, "use crate::*;")?;
 
-    writeln!(generated, "#![allow(dead_code)] #![allow(clippy::upper_case_acronyms)]")?;
+    '_opcode_structs: {
+        let mut seen = HashSet::new();
+        for [.., args, _] in instructions() {
+            if !seen.insert(args) {
+                continue;
+            }
+
+            writeln!(generated, "#[derive(Clone, Copy, Debug)]")?;
+            writeln!(generated, "#[repr(packed)]")?;
+            write!(generated, "pub struct Ops{args}(")?;
+            let mut first = true;
+            for ch in args.chars().filter(|&ch| ch != 'N') {
+                if !std::mem::take(&mut first) {
+                    write!(generated, ",")?;
+                }
+                write!(generated, "pub Op{ch}")?;
+            }
+            writeln!(generated, ");")?;
+            writeln!(generated, "unsafe impl BytecodeItem for Ops{args} {{}}")?;
+        }
+    }
 
     '_max_size: {
         let max = instructions()
@@ -61,11 +85,7 @@ fn gen_instrs() -> Result<(), Box<dyn std::error::Error>> {
     }
 
     '_name_list: {
-        writeln!(generated, "pub const NAMES: [&str; {}] = [", instructions().count())?;
-        for [_, name, _, _] in instructions() {
-            writeln!(generated, "    \"{}\",", name.to_lowercase())?;
-        }
-        writeln!(generated, "];")?;
+        writeln!(generated, "pub const COUNT: u8 = {};", instructions().count())?;
     }
 
     let instr = "Instr";
@@ -98,7 +118,8 @@ fn gen_instrs() -> Result<(), Box<dyn std::error::Error>> {
             generated,
             "/// This assumes the instruction byte is still at the beginning of the buffer"
         )?;
-        writeln!(generated, "pub fn parse_args(bytes: &mut &[u8], kind: {instr}, buf: &mut Vec<{oper}>) -> Option<()> {{")?;
+        writeln!(generated, "#[cfg(feature = \"disasm\")]")?;
+        writeln!(generated, "pub fn parse_args(bytes: &mut &[u8], kind: {instr}, buf: &mut alloc::vec::Vec<{oper}>) -> Option<()> {{")?;
         writeln!(generated, "    match kind {{")?;
         let mut instrs = instructions().collect::<Vec<_>>();
         instrs.sort_unstable_by_key(|&[.., ty, _]| ty);
@@ -138,7 +159,7 @@ fn comma_sep(items: impl Iterator<Item = String>) -> String {
 }
 
 fn instructions() -> impl Iterator<Item = [&'static str; 4]> {
-    include_str!("../hbbytecode/instructions.in")
+    include_str!("instructions.in")
         .lines()
         .filter_map(|line| line.strip_suffix(';'))
         .map(|line| line.splitn(4, ',').map(str::trim).next_chunk().unwrap())

bytecode/src/lib.rs

@@ -0,0 +1,284 @@
+#![no_std]
+
+#[cfg(feature = "disasm")]
+extern crate alloc;
+
+pub use crate::instrs::*;
+use core::convert::TryFrom;
+
+mod instrs;
+
+type OpR = u8;
+
+type OpA = u64;
+type OpO = i32;
+type OpP = i16;
+
+type OpB = u8;
+type OpH = u16;
+type OpW = u32;
+type OpD = u64;
+
+/// # Safety
+/// Has to be valid to be decoded from bytecode.
+pub unsafe trait BytecodeItem {}
+unsafe impl BytecodeItem for u8 {}
+
+impl TryFrom<u8> for Instr {
+    type Error = u8;
+
+    #[inline]
+    fn try_from(value: u8) -> Result<Self, Self::Error> {
+        #[cold]
+        fn failed(value: u8) -> Result<Instr, u8> {
+            Err(value)
+        }
+
+        if value < COUNT {
+            unsafe { Ok(core::mem::transmute::<u8, Instr>(value)) }
+        } else {
+            failed(value)
+        }
+    }
+}
+
+#[inline]
+unsafe fn encode<T>(instr: T) -> (usize, [u8; instrs::MAX_SIZE]) {
+    let mut buf = [0; instrs::MAX_SIZE];
+    core::ptr::write(buf.as_mut_ptr() as *mut T, instr);
+    (core::mem::size_of::<T>(), buf)
+}
+
+#[inline]
+#[cfg(feature = "disasm")]
+fn decode<T>(binary: &mut &[u8]) -> Option<T> {
+    let (front, rest) = core::mem::take(binary).split_at_checked(core::mem::size_of::<T>())?;
+    *binary = rest;
+    unsafe { Some(core::ptr::read(front.as_ptr() as *const T)) }
+}
+
+/// Rounding mode
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[repr(u8)]
+pub enum RoundingMode {
+    NearestEven = 0,
+    Truncate = 1,
+    Up = 2,
+    Down = 3,
+}
+
+impl TryFrom<u8> for RoundingMode {
+    type Error = ();
+
+    fn try_from(value: u8) -> Result<Self, Self::Error> {
+        (value <= 3).then(|| unsafe { core::mem::transmute(value) }).ok_or(())
+    }
+}
+
+#[cfg(feature = "disasm")]
+#[derive(Clone, Copy)]
+pub enum DisasmItem {
+    Func,
+    Global,
+}
+
+#[cfg(feature = "disasm")]
+#[derive(Debug)]
+pub enum DisasmError<'a> {
+    InvalidInstruction(u8),
+    InstructionOutOfBounds(&'a str),
+    FmtFailed(core::fmt::Error),
+    HasOutOfBoundsJumps,
+}
+
+#[cfg(feature = "disasm")]
+impl From<core::fmt::Error> for DisasmError<'_> {
+    fn from(value: core::fmt::Error) -> Self {
+        Self::FmtFailed(value)
+    }
+}
+
+#[cfg(feature = "disasm")]
+impl core::fmt::Display for DisasmError<'_> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        match *self {
+            DisasmError::InvalidInstruction(b) => write!(f, "invalid instruction opcode: {b}"),
+            DisasmError::InstructionOutOfBounds(name) => {
+                write!(f, "instruction would go out of bounds of {name} symbol")
+            }
+            DisasmError::FmtFailed(error) => write!(f, "fmt failed: {error}"),
+            DisasmError::HasOutOfBoundsJumps => write!(
+                f,
+                "the code contained jumps that dont got neither to a \
+                valid symbol or local insturction"
+            ),
+        }
+    }
+}
+
+#[cfg(feature = "disasm")]
+impl core::error::Error for DisasmError<'_> {}
+
+#[cfg(feature = "disasm")]
+pub fn disasm<'a>(
+    binary: &mut &[u8],
+    functions: &alloc::collections::BTreeMap<u32, (&'a str, u32, DisasmItem)>,
+    out: &mut alloc::string::String,
+    mut eca_handler: impl FnMut(&mut &[u8]),
+) -> Result<(), DisasmError<'a>> {
+    use {
+        self::instrs::Instr,
+        alloc::{
+            collections::btree_map::{BTreeMap, Entry},
+            vec::Vec,
+        },
+        core::{convert::TryInto, fmt::Write},
+    };
+
+    fn instr_from_byte(b: u8) -> Result<Instr, DisasmError<'static>> {
+        b.try_into().map_err(DisasmError::InvalidInstruction)
+    }
+
+    let mut labels = BTreeMap::<u32, u32>::default();
+    let mut buf = Vec::<instrs::Oper>::new();
+    let mut has_oob = false;
+
+    '_offset_pass: for (&off, &(name, len, kind)) in functions.iter() {
+        if matches!(kind, DisasmItem::Global) {
+            continue;
+        }
+
+        let prev = *binary;
+
+        *binary = &binary[off as usize..];
+
+        let mut label_count = 0;
+        while let Some(&byte) = binary.first() {
+            let offset: i32 = (prev.len() - binary.len()).try_into().unwrap();
+            if offset as u32 == off + len {
+                break;
+            }
+            let Ok(inst) = instr_from_byte(byte) else { break };
+            instrs::parse_args(binary, inst, &mut buf)
+                .ok_or(DisasmError::InstructionOutOfBounds(name))?;
+
+            for op in buf.drain(..) {
+                let rel = match op {
+                    instrs::Oper::O(rel) => rel,
+                    instrs::Oper::P(rel) => rel.into(),
+                    _ => continue,
+                };
+
+                let global_offset: u32 = (offset + rel).try_into().unwrap();
+                if functions.get(&global_offset).is_some() {
+                    continue;
+                }
+                label_count += match labels.entry(global_offset) {
+                    Entry::Occupied(_) => 0,
+                    Entry::Vacant(entry) => {
+                        entry.insert(label_count);
+                        1
+                    }
+                }
+            }
+
+            if matches!(inst, Instr::ECA) {
+                eca_handler(binary);
+            }
+        }
+
+        *binary = prev;
+    }
+
+    let mut ordered = functions.iter().collect::<Vec<_>>();
+    ordered.sort_unstable_by_key(|(_, (name, _, _))| name);
+
+    '_dump: for (&off, &(name, len, kind)) in ordered {
+        if matches!(kind, DisasmItem::Global) {
+            continue;
+        }
+        let prev = *binary;
+
+        writeln!(out, "{name}:")?;
+
+        *binary = &binary[off as usize..];
+        while let Some(&byte) = binary.first() {
+            let offset: i32 = (prev.len() - binary.len()).try_into().unwrap();
+            if offset as u32 == off + len {
+                break;
+            }
+            let Ok(inst) = instr_from_byte(byte) else {
+                writeln!(out, "invalid instr {byte}")?;
+                break;
+            };
+            instrs::parse_args(binary, inst, &mut buf).unwrap();
+
+            if let Some(label) = labels.get(&offset.try_into().unwrap()) {
+                write!(out, "{:>2}: ", label)?;
+            } else {
+                write!(out, "    ")?;
+            }
+
+            write!(out, "{inst:<8?} ")?;
+
+            'a: for (i, op) in buf.drain(..).enumerate() {
+                if i != 0 {
+                    write!(out, ", ")?;
+                }
+
+                let rel = 'b: {
+                    match op {
+                        instrs::Oper::O(rel) => break 'b rel,
+                        instrs::Oper::P(rel) => break 'b rel.into(),
+                        instrs::Oper::R(r) => write!(out, "r{r}")?,
+                        instrs::Oper::B(b) => write!(out, "{b}b")?,
+                        instrs::Oper::H(h) => write!(out, "{h}h")?,
+                        instrs::Oper::W(w) => write!(out, "{w}w")?,
+                        instrs::Oper::D(d) if (d as i64) < 0 => write!(out, "{}d", d as i64)?,
+                        instrs::Oper::D(d) => write!(out, "{d}d")?,
+                        instrs::Oper::A(a) => write!(out, "{a}a")?,
+                    }
+
+                    continue 'a;
+                };
+
+                let global_offset: u32 = (offset + rel).try_into().unwrap();
+                if let Some(&(name, ..)) = functions.get(&global_offset) {
+                    if name.contains('\0') {
+                        write!(out, ":{name:?}")?;
+                    } else {
+                        write!(out, ":{name}")?;
+                    }
+                } else {
+                    let local_has_oob = global_offset < off
+                        || global_offset > off + len
+                        || prev
+                            .get(global_offset as usize)
+                            .map_or(true, |&b| instr_from_byte(b).is_err())
+                        || prev[global_offset as usize] == 0;
+                    has_oob |= local_has_oob;
+                    let label = labels.get(&global_offset).unwrap();
+                    if local_has_oob {
+                        write!(out, "!!!!!!!!!{rel}")?;
+                    } else {
+                        write!(out, ":{label}")?;
+                    }
+                }
+            }
+
+            writeln!(out)?;
+
+            if matches!(inst, Instr::ECA) {
+                eca_handler(binary);
+            }
+        }
+
+        *binary = prev;
+    }
+
+    if has_oob {
+        return Err(DisasmError::HasOutOfBoundsJumps);
+    }
+
+    Ok(())
+}

depell/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "depell"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+argon2 = "0.5.3"
+axum = "0.7.7"
+axum-server = { version = "0.7.1", optional = true, features = ["rustls", "tls-rustls"] }
+const_format = "0.2.33"
+getrandom = "0.2.15"
+hblang.workspace = true
+htmlm = "0.5.0"
+log = "0.4.22"
+rand_core = { version = "0.6.4", features = ["getrandom"] }
+rusqlite = { version = "0.32.1", features = ["bundled"] }
+serde = { version = "1.0.210", features = ["derive"] }
+time = "0.3.36"
+tokio = { version = "1.40.0", features = ["rt"] }
+
+[features]
+#default = ["tls"]
+tls = ["dep:axum-server"]

depell/README.md

@@ -0,0 +1,14 @@
+# Depell
+
+Depell is a website that allows users to import/post/run hblang code and create huge dependency graphs. Its currently hosted at https://depell.mlokis.tech.
+
+## Local Development
+
+Prerequirements:
+- rust nigthly toolchain: install rust from [here](https://www.rust-lang.org/tools/install)
+
+```bash
+rustup default nightly
+cargo xtask watch-depell-debug
+# browser http://localhost:8080
+```

depell/src/index.css

@@ -0,0 +1,143 @@
+* {
+	font-family: var(--font);
+}
+
+body {
+	--primary: white;
+	--secondary: #EFEFEF;
+	--timestamp: #777777;
+	--error: #ff3333;
+	--placeholder: #333333;
+}
+
+
+body {
+	--small-gap: 5px;
+	--font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+	--monospace: 'Courier New', Courier, monospace;
+
+	nav {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+
+		section:last-child {
+			display: flex;
+			gap: var(--small-gap);
+		}
+	}
+
+	main {
+		margin-top: var(--small-gap);
+		display: flex;
+		flex-direction: column;
+		gap: var(--small-gap);
+	}
+}
+
+div.preview {
+	div.info {
+		display: flex;
+		gap: var(--small-gap);
+
+		span[apply=timestamp] {
+			color: var(--timestamp);
+		}
+	}
+
+	div.stats {
+		display: flex;
+		gap: var(--small-gap);
+	}
+}
+
+form {
+	display: flex;
+	flex-direction: column;
+	gap: var(--small-gap);
+
+
+	.error {
+		color: var(--error);
+		text-align: center;
+	}
+
+}
+
+textarea {
+	outline: none;
+	border: none;
+	background: var(--secondary);
+	padding: var(--small-gap);
+	padding-top: calc(var(--small-gap) * 1.5);
+	font-family: var(--monospace);
+	resize: none;
+	tab-size: 4;
+}
+
+pre {
+	background: var(--secondary);
+	padding: var(--small-gap);
+	padding-top: calc(var(--small-gap) * 1.5);
+	margin: 0px;
+	font-family: var(--monospace);
+	tab-size: 4;
+	overflow-x: auto;
+}
+
+input {
+	font-size: inherit;
+	outline: none;
+	border: none;
+	background: var(--secondary);
+	padding: var(--small-gap);
+}
+
+input:is(:hover, :focus) {
+	background: var(--primary);
+}
+
+button {
+	border: none;
+	outline: none;
+	font-size: inherit;
+	background: var(--secondary);
+}
+
+button:hover:not(:active) {
+	background: var(--primary);
+}
+
+div#code-editor {
+	display: flex;
+	position: relative;
+
+	textarea {
+		flex: 1;
+	}
+
+	span#code-size {
+		position: absolute;
+		right: 2px;
+		font-size: 12px;
+	}
+}
+
+div#dep-list {
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+	gap: var(--small-gap);
+
+	section {
+		width: 100%;
+		display: flex;
+		flex-direction: column;
+		text-align: center;
+		gap: var(--small-gap);
+
+		div {
+			text-align: left;
+		}
+	}
+}

depell/src/index.js

@@ -0,0 +1,427 @@
+/// @ts-check
+
+/** @return {never} */
+function never() { throw new Error() }
+
+/**@type{WebAssembly.Instance}*/ let hbcInstance;
+/**@type{Promise<WebAssembly.WebAssemblyInstantiatedSource>}*/ let hbcInstaceFuture;
+async function getHbcInstance() {
+	hbcInstaceFuture ??= WebAssembly.instantiateStreaming(fetch("/hbc.wasm"), {});
+	return hbcInstance ??= (await hbcInstaceFuture).instance;
+}
+
+const stack_pointer_offset = 1 << 20;
+
+/** @param {WebAssembly.Instance} instance @param {Post[]} packages @param {number} fuel
+ * @returns {string} */
+function compileCode(instance, packages, fuel) {
+	let {
+		INPUT, INPUT_LEN,
+		LOG_MESSAGES, LOG_MESSAGES_LEN,
+		memory, compile_and_run,
+	} = instance.exports;
+
+	if (!(true
+		&& memory instanceof WebAssembly.Memory
+		&& INPUT instanceof WebAssembly.Global
+		&& INPUT_LEN instanceof WebAssembly.Global
+		&& LOG_MESSAGES instanceof WebAssembly.Global
+		&& LOG_MESSAGES_LEN instanceof WebAssembly.Global
+		&& typeof compile_and_run === "function"
+	)) never();
+
+	const codeLength = packPosts(packages, new DataView(memory.buffer, INPUT.value));
+	new DataView(memory.buffer).setUint32(INPUT_LEN.value, codeLength, true);
+
+	runWasmFunction(instance, compile_and_run, fuel);
+	return bufToString(memory, LOG_MESSAGES, LOG_MESSAGES_LEN);
+}
+
+/**@type{WebAssembly.Instance}*/ let fmtInstance;
+/**@type{Promise<WebAssembly.WebAssemblyInstantiatedSource>}*/ let fmtInstaceFuture;
+async function getFmtInstance() {
+	fmtInstaceFuture ??= WebAssembly.instantiateStreaming(fetch("/hbfmt.wasm"), {});
+	return fmtInstance ??= (await fmtInstaceFuture).instance;
+}
+
+/** @param {WebAssembly.Instance} instance @param {string} code @param {"fmt" | "minify"} action
+ * @returns {string | undefined} */
+function modifyCode(instance, code, action) {
+	let {
+		INPUT, INPUT_LEN,
+		OUTPUT, OUTPUT_LEN,
+		memory, fmt, minify
+	} = instance.exports;
+
+	if (!(true
+		&& memory instanceof WebAssembly.Memory
+		&& INPUT instanceof WebAssembly.Global
+		&& INPUT_LEN instanceof WebAssembly.Global
+		&& OUTPUT instanceof WebAssembly.Global
+		&& OUTPUT_LEN instanceof WebAssembly.Global
+		&& typeof fmt === "function"
+		&& typeof minify === "function"
+	)) never();
+
+	if (action !== "fmt") {
+		INPUT = OUTPUT;
+		INPUT_LEN = OUTPUT_LEN;
+	}
+
+	let dw = new DataView(memory.buffer);
+	dw.setUint32(INPUT_LEN.value, code.length, true);
+	new Uint8Array(memory.buffer, INPUT.value).set(new TextEncoder().encode(code));
+
+	return runWasmFunction(instance, action === "fmt" ? fmt : minify) ?
+		bufToString(memory, OUTPUT, OUTPUT_LEN) : undefined;
+}
+
+
+/** @param {WebAssembly.Instance} instance @param {CallableFunction} func @param {any[]} args
+ * @returns {boolean} */
+function runWasmFunction(instance, func, ...args) {
+	const { PANIC_MESSAGE, PANIC_MESSAGE_LEN, memory, stack_pointer } = instance.exports;
+	if (!(true
+		&& memory instanceof WebAssembly.Memory
+		&& stack_pointer instanceof WebAssembly.Global
+	)) never();
+	const ptr = stack_pointer.value;
+	try {
+		func(...args);
+		return true;
+	} catch (error) {
+		if (error instanceof WebAssembly.RuntimeError
+			&& error.message == "unreachable"
+			&& PANIC_MESSAGE instanceof WebAssembly.Global
+			&& PANIC_MESSAGE_LEN instanceof WebAssembly.Global) {
+			console.error(bufToString(memory, PANIC_MESSAGE, PANIC_MESSAGE_LEN), error);
+		} else {
+			console.error(error);
+		}
+		stack_pointer.value = ptr;
+		return false;
+	}
+}
+
+/** @typedef {Object} Post
+ * @property {string} path 
+ * @property {string} code */
+
+/** @param {Post[]} posts @param {DataView} view  @returns {number} */
+function packPosts(posts, view) {
+	const enc = new TextEncoder(), buf = new Uint8Array(view.buffer, view.byteOffset);
+	let len = 0; for (const post of posts) {
+		view.setUint16(len, post.path.length, true); len += 2;
+		buf.set(enc.encode(post.path), len); len += post.path.length;
+		view.setUint16(len, post.code.length, true); len += 2;
+		buf.set(enc.encode(post.code), len); len += post.code.length;
+	}
+	return len;
+}
+
+/** @param {WebAssembly.Memory} mem
+ * @param {WebAssembly.Global} ptr
+ * @param {WebAssembly.Global} len
+ * @return {string} */
+function bufToString(mem, ptr, len) {
+	const res = new TextDecoder()
+		.decode(new Uint8Array(mem.buffer, ptr.value,
+			new DataView(mem.buffer).getUint32(len.value, true)));
+	new DataView(mem.buffer).setUint32(len.value, 0, true);
+	return res;
+}
+
+/** @param {HTMLElement} target */
+function wireUp(target) {
+	execApply(target);
+	cacheInputs(target);
+	bindCodeEdit(target);
+	bindTextareaAutoResize(target);
+}
+
+const importRe = /@use\s*\(\s*"(([^"]|\\")+)"\s*\)/g;
+
+/** @param {string} code
+ * @param {string[]} roots
+ * @param {Post[]} buf
+ * @param {Set<string>} prevRoots
+ * @returns {void} */
+function loadCachedPackages(code, roots, buf, prevRoots) {
+	buf[0].code = code;
+
+	roots.length = 0;
+	let changed = false;
+	for (const match of code.matchAll(importRe)) {
+		changed ||= !prevRoots.has(match[1]);
+		roots.push(match[1]);
+	}
+
+	if (!changed) return;
+	buf.length = 1;
+	prevRoots.clear();
+
+	for (let imp = roots.pop(); imp !== undefined; imp = roots.pop()) {
+		if (prevRoots.has(imp)) continue; prevRoots.add(imp);
+		buf.push({ path: imp, code: localStorage.getItem("package-" + imp) ?? never() });
+		for (const match of buf[buf.length - 1].code.matchAll(importRe)) {
+			roots.push(match[1]);
+		}
+	}
+}
+
+/**@type{Set<string>}*/ const prevRoots = new Set();
+
+/** @param {HTMLElement} target */
+async function bindCodeEdit(target) {
+	const edit = target.querySelector("#code-edit");
+	if (!(edit instanceof HTMLTextAreaElement)) return;
+
+	const codeSize = target.querySelector("#code-size");
+	const errors = target.querySelector("#compiler-output");
+	if (!(true
+		&& codeSize instanceof HTMLSpanElement
+		&& errors instanceof HTMLPreElement
+	)) never();
+
+	const MAX_CODE_SIZE = parseInt(codeSize.innerHTML);
+	if (Number.isNaN(MAX_CODE_SIZE)) never();
+
+	const hbc = await getHbcInstance(), fmt = await getFmtInstance();
+	let importDiff = new Set();
+	const keyBuf = [];
+	/**@type{Post[]}*/
+	const packages = [{ path: "local.hb", code: "" }];
+	const debounce = 100;
+	/**@type{AbortController|undefined}*/
+	let cancelation = undefined;
+	let timeout = 0;
+
+	prevRoots.clear();
+
+	const onInput = () => {
+		importDiff.clear();
+		for (const match of edit.value.matchAll(importRe)) {
+			if (localStorage["package-" + match[1]]) continue;
+			importDiff.add(match[1]);
+		}
+
+		if (importDiff.size !== 0) {
+			if (cancelation) cancelation.abort();
+			cancelation = new AbortController();
+
+			keyBuf.length = 0;
+			keyBuf.push(...importDiff.keys());
+
+			errors.textContent = "fetching: " + keyBuf.join(", ");
+
+			fetch(`/code`, {
+				method: "POST",
+				signal: cancelation.signal,
+				headers: { "Content-Type": "application/json" },
+				body: JSON.stringify(keyBuf),
+			}).then(async e => {
+				try {
+					const json = await e.json();
+					if (e.status == 200) {
+						for (const [key, value] of Object.entries(json)) {
+							localStorage["package-" + key] = value;
+						}
+						const missing = keyBuf.filter(i => json[i] === undefined);
+						if (missing.length !== 0) {
+							errors.textContent = "deps not found: " + missing.join(", ");
+						} else {
+							cancelation = undefined;
+							edit.dispatchEvent(new InputEvent("input"));
+						}
+					}
+				} catch (er) {
+					errors.textContent = "completely failed to fetch ("
+						+ e.status + "): " + keyBuf.join(", ");
+					console.error(e, er);
+				}
+			});
+		}
+
+		if (cancelation && importDiff.size !== 0) {
+			return;
+		}
+
+		loadCachedPackages(edit.value, keyBuf, packages, prevRoots);
+
+		errors.textContent = compileCode(hbc, packages, 1);
+		const minified_size = modifyCode(fmt, edit.value, "minify")?.length;
+		if (minified_size) {
+			codeSize.textContent = (MAX_CODE_SIZE - minified_size) + "";
+			const perc = Math.min(100, Math.floor(100 * (minified_size / MAX_CODE_SIZE)));
+			codeSize.style.color = `color-mix(in srgb, white, var(--error) ${perc}%)`;
+		}
+		timeout = 0;
+	};
+
+	edit.addEventListener("input", () => {
+		if (timeout) clearTimeout(timeout);
+		timeout = setTimeout(onInput, debounce)
+	});
+	edit.dispatchEvent(new InputEvent("input"));
+}
+
+/** @type {{ [key: string]: (content: string) => Promise<string> | string }} */
+const applyFns = {
+	timestamp: (content) => new Date(parseInt(content) * 1000).toLocaleString(),
+	fmt: (content) => getFmtInstance().then(i => modifyCode(i, content, "fmt") ?? "invalid code"),
+};
+/** @param {HTMLElement} target */
+function execApply(target) {
+	for (const elem of target.querySelectorAll('[apply]')) {
+		if (!(elem instanceof HTMLElement)) continue;
+		const funcname = elem.getAttribute('apply') ?? never();
+		let res = applyFns[funcname](elem.textContent ?? "");
+		if (res instanceof Promise) res.then(c => elem.textContent = c);
+		else elem.textContent = res;
+	}
+}
+
+/** @param {HTMLElement} target */
+function bindTextareaAutoResize(target) {
+	for (const textarea of target.querySelectorAll("textarea")) {
+		if (!(textarea instanceof HTMLTextAreaElement)) never();
+
+		const taCssMap = window.getComputedStyle(textarea);
+		const padding = parseInt(taCssMap.getPropertyValue('padding-top') ?? "0")
+			+ parseInt(taCssMap.getPropertyValue('padding-top') ?? "0");
+		textarea.style.height = "auto";
+		textarea.style.height = (textarea.scrollHeight - padding) + "px";
+		textarea.style.overflowY = "hidden";
+		textarea.addEventListener("input", function() {
+			let top = window.scrollY;
+			textarea.style.height = "auto";
+			textarea.style.height = (textarea.scrollHeight - padding) + "px";
+			window.scrollTo({ top });
+		});
+
+		textarea.onkeydown = (ev) => {
+			if (ev.key === "Tab") {
+				ev.preventDefault();
+				document.execCommand('insertText', false, "\t");
+			}
+		}
+	}
+}
+
+/** @param {HTMLElement} target */
+function cacheInputs(target) {
+	/**@type {HTMLFormElement}*/ let form;
+	for (form of target.querySelectorAll('form')) {
+		const path = form.getAttribute('hx-post') || form.getAttribute('hx-delete');
+		if (!path) {
+			console.warn('form does not have a hx-post or hx-delete attribute', form);
+			continue;
+		}
+
+		for (const input of form.elements) {
+			if (input instanceof HTMLInputElement || input instanceof HTMLTextAreaElement) {
+				if ('password submit button'.includes(input.type)) continue;
+				const key = path + input.name;
+				input.value = localStorage.getItem(key) ?? '';
+				input.addEventListener("input", () => localStorage.setItem(key, input.value));
+			} else {
+				console.warn("unhandled form element: ", input);
+			}
+		}
+	}
+}
+
+/** @param {string} [path]  */
+function updaetTab(path) {
+	for (const elem of document.querySelectorAll("button[hx-push-url]")) {
+		if (elem instanceof HTMLButtonElement)
+			elem.disabled = elem.getAttribute("hx-push-url") === (path ?? window.location.pathname);
+	}
+}
+
+if (window.location.hostname === 'localhost') {
+	let id; setInterval(async () => {
+		let new_id = await fetch('/hot-reload').then(reps => reps.text());
+		id ??= new_id;
+		if (id !== new_id) window.location.reload();
+	}, 300);
+
+	(async function test() {
+		{
+			const code = "main:=fn():void{return}";
+			const inst = await getFmtInstance()
+			const fmtd = modifyCode(inst, code, "fmt") ?? never();
+			const prev = modifyCode(inst, fmtd, "minify") ?? never();
+			if (code != prev) console.error(code, prev);
+		}
+		{
+			const posts = [{
+				path: "foo.hb",
+				code: "main:=fn():int{return 42}",
+			}];
+			const res = compileCode(await getHbcInstance(), posts, 1) ?? never();
+			const expected = "exit code: 42\n";
+			if (expected != res) console.error(expected, res);
+		}
+	})()
+}
+
+document.body.addEventListener('htmx:afterSwap', (ev) => {
+	if (!(ev.target instanceof HTMLElement)) never();
+	wireUp(ev.target);
+	if (ev.target.tagName == "MAIN" || ev.target.tagName == "BODY")
+		updaetTab(ev['detail'].pathInfo.finalRequestPath);
+	console.log(ev);
+});
+
+getFmtInstance().then(inst => {
+	document.body.addEventListener('htmx:configRequest', (ev) => {
+		const details = ev['detail'];
+		if (details.path === "/post" && details.verb === "post") {
+			details.parameters['code'] = modifyCode(inst, details.parameters['code'], "minify");
+		}
+	});
+
+	/** @param {string} query @param {string} target @returns {number} */
+	function fuzzyCost(query, target) {
+		let qi = 0, bi = 0, cost = 0, matched = false;
+		while (qi < query.length) {
+			if (query.charAt(qi) === target.charAt(bi++)) {
+				matched = true;
+				qi++;
+			} else {
+				cost++;
+			}
+			if (bi === target.length) (bi = 0, qi++);
+		}
+		return cost + (matched ? 0 : 100 * target.length);
+	}
+
+	let deps = undefined;
+	/** @param {HTMLInputElement} input @returns {void} */
+	function filterCodeDeps(input) {
+		deps ??= document.getElementById("deps");
+		if (!(deps instanceof HTMLElement)) never();
+		if (input.value === "") {
+			deps.textContent = "results show here...";
+			return;
+		}
+		deps.innerHTML = "";
+		for (const root of [...prevRoots.keys()]
+			.sort((a, b) => fuzzyCost(input.value, a) - fuzzyCost(input.value, b))) {
+			const pane = document.createElement("div");
+			const code = modifyCode(inst, localStorage["package-" + root], "fmt");
+			pane.innerHTML = `<div>${root}</div><pre>${code}</pre>`;
+			deps.appendChild(pane);
+		}
+		if (deps.innerHTML === "") {
+			deps.textContent = "no results";
+		}
+	}
+
+	Object.assign(window, { filterCodeDeps });
+});
+
+updaetTab();
+wireUp(document.body);
+

depell/src/main.rs

@@ -0,0 +1,813 @@
+#![feature(iter_collect_into)]
+use {
+    argon2::{password_hash::SaltString, PasswordVerifier},
+    axum::{
+        body::Bytes,
+        extract::Path,
+        http::{header::COOKIE, request::Parts},
+        response::{AppendHeaders, Html},
+    },
+    const_format::formatcp,
+    core::fmt,
+    htmlm::{html, write_html},
+    rand_core::OsRng,
+    serde::{Deserialize, Serialize},
+    std::{
+        collections::{HashMap, HashSet},
+        fmt::{Display, Write},
+        net::Ipv4Addr,
+    },
+};
+
+const MAX_NAME_LENGTH: usize = 32;
+const MAX_POSTNAME_LENGTH: usize = 64;
+const MAX_CODE_LENGTH: usize = 1024 * 4;
+const SESSION_DURATION_SECS: u64 = 60 * 60;
+const MAX_FEED_SIZE: usize = 8 * 1024;
+
+type Redirect<const COUNT: usize = 1> = AppendHeaders<[(&'static str, &'static str); COUNT]>;
+
+macro_rules! static_asset {
+    ($mime:literal, $body:literal) => {
+        get(|| async {
+            axum::http::Response::builder()
+                .header("content-type", $mime)
+                .header("content-encoding", "gzip")
+                .body(axum::body::Body::from(Bytes::from_static(include_bytes!(concat!(
+                    $body, ".gz"
+                )))))
+                .unwrap()
+        })
+    };
+}
+
+async fn amain() {
+    use axum::routing::{delete, get, post};
+
+    let debug = cfg!(debug_assertions);
+
+    log::set_logger(&Logger).unwrap();
+    log::set_max_level(if debug { log::LevelFilter::Warn } else { log::LevelFilter::Error });
+
+    db::init();
+
+    let router = axum::Router::new()
+        .route("/", get(Index::page))
+        .route("/index.css", static_asset!("text/css", "index.css"))
+        .route("/index.js", static_asset!("text/javascript", "index.js"))
+        .route("/hbfmt.wasm", static_asset!("application/wasm", "hbfmt.wasm"))
+        .route("/hbc.wasm", static_asset!("application/wasm", "hbc.wasm"))
+        .route("/index-view", get(Index::get))
+        .route("/feed", get(Feed::page))
+        .route("/feed-view", get(Feed::get))
+        .route("/feed-more", post(Feed::more))
+        .route("/profile", get(Profile::page))
+        .route("/profile-view", get(Profile::get))
+        .route("/profile/:name", get(Profile::get_other_page))
+        .route("/profile-view/:name", get(Profile::get_other))
+        .route("/post", get(Post::page))
+        .route("/post-view", get(Post::get))
+        .route("/post", post(Post::post))
+        .route("/code", post(fetch_code))
+        .route("/login", get(Login::page))
+        .route("/login-view", get(Login::get))
+        .route("/login", post(Login::post))
+        .route("/login", delete(Login::delete))
+        .route("/signup", get(Signup::page))
+        .route("/signup-view", get(Signup::get))
+        .route("/signup", post(Signup::post))
+        .route(
+            "/hot-reload",
+            get({
+                let id = std::time::SystemTime::now()
+                    .duration_since(std::time::SystemTime::UNIX_EPOCH)
+                    .unwrap()
+                    .as_millis();
+                move || async move { id.to_string() }
+            }),
+        );
+
+    #[cfg(feature = "tls")]
+    {
+        let addr =
+            (Ipv4Addr::UNSPECIFIED, std::env::var("DEPELL_PORT").unwrap().parse::<u16>().unwrap());
+        let config = axum_server::tls_rustls::RustlsConfig::from_pem_file(
+            std::env::var("DEPELL_CERT_PATH").unwrap(),
+            std::env::var("DEPELL_KEY_PATH").unwrap(),
+        )
+        .await
+        .unwrap();
+
+        axum_server::bind_rustls(addr.into(), config)
+            .serve(router.into_make_service())
+            .await
+            .unwrap();
+    }
+    #[cfg(not(feature = "tls"))]
+    {
+        let addr = (Ipv4Addr::UNSPECIFIED, 8080);
+        let socket = tokio::net::TcpListener::bind(addr).await.unwrap();
+        axum::serve(socket, router).await.unwrap();
+    }
+}
+
+async fn fetch_code(
+    axum::Json(paths): axum::Json<Vec<String>>,
+) -> axum::Json<HashMap<String, String>> {
+    let mut deps = HashMap::<String, String>::new();
+    db::with(|db| {
+        for path in &paths {
+            let Some((author, name)) = path.split_once('/') else { continue };
+            db.fetch_deps
+                .query_map((name, author), |r| {
+                    Ok((
+                        r.get::<_, String>(1)? + "/" + r.get_ref(0)?.as_str()?,
+                        r.get::<_, String>(2)?,
+                    ))
+                })
+                .log("fetch deps query")
+                .into_iter()
+                .flatten()
+                .filter_map(|r| r.log("deps row"))
+                .collect_into(&mut deps);
+        }
+    });
+    axum::Json(deps)
+}
+
+#[derive(Deserialize)]
+#[serde(untagged)]
+enum Feed {
+    Before { before_timestamp: u64 },
+}
+
+#[derive(Deserialize)]
+struct Before {
+    before_timestamp: u64,
+}
+
+impl Feed {
+    async fn more(session: Session, axum::Form(data): axum::Form<Before>) -> Html<String> {
+        Self::Before { before_timestamp: data.before_timestamp }.render(&session)
+    }
+}
+
+impl Default for Feed {
+    fn default() -> Self {
+        Self::Before { before_timestamp: now() + 3600 }
+    }
+}
+
+impl Page for Feed {
+    fn render_to_buf(self, _: &Session, buf: &mut String) {
+        db::with(|db| {
+            let cursor = match self {
+                Feed::Before { before_timestamp } => db
+                    .get_pots_before
+                    .query_map((before_timestamp,), Post::from_row)
+                    .log("fetch before posts query")
+                    .into_iter()
+                    .flatten()
+                    .filter_map(|r| r.log("fetch before posts row")),
+            };
+
+            let base_len = buf.len();
+            let mut last_timestamp = None;
+            for post in cursor {
+                write!(buf, "{}", post).unwrap();
+                if buf.len() - base_len > MAX_FEED_SIZE {
+                    last_timestamp = Some(post.timestamp);
+                    break;
+                }
+            }
+
+            write_html!((*buf)
+                if let Some(last_timestamp) = last_timestamp {
+                    <div "hx-post"="/feed-more"
+                        "hx-trigger"="intersect once"
+                        "hx-swap"="outerHTML"
+                        "hx-vals"={format_args!("{{\"before_timestamp\":{last_timestamp}}}")}
+                    >"there might be more"</div>
+                } else {
+                    "no more stuff"
+                }
+            );
+        });
+    }
+}
+
+#[derive(Default)]
+struct Index;
+
+impl PublicPage for Index {
+    fn render_to_buf(self, buf: &mut String) {
+        buf.push_str(include_str!("welcome-page.html"));
+    }
+}
+
+#[derive(Deserialize, Default)]
+struct Post {
+    author: String,
+    name: String,
+    #[serde(skip)]
+    timestamp: u64,
+    #[serde(skip)]
+    imports: usize,
+    #[serde(skip)]
+    runs: usize,
+    #[serde(skip)]
+    dependencies: usize,
+    code: String,
+    #[serde(skip)]
+    error: Option<&'static str>,
+}
+
+impl Page for Post {
+    fn render_to_buf(self, session: &Session, buf: &mut String) {
+        let Self { name, code, error, .. } = self;
+        write_html! { (buf)
+            <form id="postForm" "hx-post"="/post" "hx-swap"="outerHTML">
+                if let Some(e) = error { <div class="error">e</div> }
+                <input name="author" type="text" value={session.name} hidden>
+                <input name="name" type="text" placeholder="name" value=name
+                    required maxlength=MAX_POSTNAME_LENGTH>
+                <div id="code-editor">
+                    <textarea id="code-edit" name="code" placeholder="code" rows=1
+                        required>code</textarea>
+                    <span id="code-size">MAX_CODE_LENGTH</span>
+                </div>
+                <input type="submit" value="submit">
+                <pre id="compiler-output"></pre>
+            </form>
+            !{include_str!("post-page.html")}
+        }
+    }
+}
+
+impl Post {
+    pub fn from_row(r: &rusqlite::Row) -> rusqlite::Result<Self> {
+        Ok(Post {
+            author: r.get(0)?,
+            name: r.get(1)?,
+            timestamp: r.get(2)?,
+            code: r.get(3)?,
+            ..Default::default()
+        })
+    }
+
+    async fn post(
+        session: Session,
+        axum::Form(mut data): axum::Form<Self>,
+    ) -> Result<Redirect, Html<String>> {
+        if data.name.len() > MAX_POSTNAME_LENGTH {
+            data.error = Some(formatcp!("name too long, max length is {MAX_POSTNAME_LENGTH}"));
+            return Err(data.render(&session));
+        }
+
+        if data.code.len() > MAX_CODE_LENGTH {
+            data.error = Some(formatcp!("code too long, max length is {MAX_CODE_LENGTH}"));
+            return Err(data.render(&session));
+        }
+
+        db::with(|db| {
+            if let Err(e) = db.create_post.insert((&data.name, &session.name, now(), &data.code)) {
+                if let rusqlite::Error::SqliteFailure(e, _) = e {
+                    if e.code == rusqlite::ErrorCode::ConstraintViolation {
+                        data.error = Some("this name is already used");
+                    }
+                }
+                data.error = data.error.or_else(|| {
+                    log::error!("create post error: {e}");
+                    Some("internal server error")
+                });
+                return;
+            }
+
+            for (author, name) in hblang::lexer::Lexer::uses(&data.code)
+                .filter_map(|v| v.split_once('/'))
+                .collect::<HashSet<_>>()
+            {
+                if db
+                    .create_import
+                    .insert((author, name, &session.name, &data.name))
+                    .log("create import query")
+                    .is_none()
+                {
+                    data.error = Some("internal server error");
+                    return;
+                };
+            }
+        });
+
+        if data.error.is_some() {
+            Err(data.render(&session))
+        } else {
+            Ok(redirect("/profile"))
+        }
+    }
+}
+
+impl fmt::Display for Post {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let Self { author, name, timestamp, imports, runs, dependencies, code, .. } = self;
+        write_html! { f <div class="preview">
+            <div class="info">
+                <span>
+                    <a "hx-get"={format_args!("/profile-view/{author}")} href="" "hx-target"="main"
+                        "hx-push-url"={format_args!("/profile/{author}")}
+                        "hx-swam"="innerHTML">author</a>
+                    "/"
+                    name
+                </span>
+                <span apply="timestamp">timestamp</span>
+            </div>
+            <div class="stats">
+                for (name, count) in "inps runs deps".split(' ')
+                    .zip([imports, runs, dependencies])
+                    .filter(|(_, &c)| c != 0)
+                {
+                    name ": "<span>count</span>
+                }
+            </div>
+            <pre apply="fmt">code</pre>
+            if *timestamp == 0 {
+                <button "hx-get"="/post" "hx-swap"="outerHTML"
+                    "hx-target"="[preview]">"edit"</button>
+            }
+        </div> }
+        Ok(())
+    }
+}
+
+#[derive(Default)]
+struct Profile {
+    other: Option<String>,
+}
+
+impl Profile {
+    async fn get_other(session: Session, Path(name): Path<String>) -> Html<String> {
+        Profile { other: Some(name) }.render(&session)
+    }
+
+    async fn get_other_page(session: Session, Path(name): Path<String>) -> Html<String> {
+        base(|b| Profile { other: Some(name) }.render_to_buf(&session, b), Some(&session))
+    }
+}
+
+impl Page for Profile {
+    fn render_to_buf(self, session: &Session, buf: &mut String) {
+        db::with(|db| {
+            let iter = db
+                .get_user_posts
+                .query_map((self.other.as_ref().unwrap_or(&session.name),), Post::from_row)
+                .log("get user posts query")
+                .into_iter()
+                .flatten()
+                .filter_map(|p| p.log("user post row"));
+            write_html! { (buf)
+                for post in iter {
+                    !{post}
+                } else {
+                    "no posts"
+                }
+                !{include_str!("profile-page.html")}
+            }
+        })
+    }
+}
+
+fn hash_password(password: &str) -> String {
+    use argon2::PasswordHasher;
+    argon2::Argon2::default()
+        .hash_password(password.as_bytes(), &SaltString::generate(&mut OsRng))
+        .unwrap()
+        .to_string()
+}
+
+fn verify_password(hash: &str, password: &str) -> Result<(), argon2::password_hash::Error> {
+    argon2::Argon2::default()
+        .verify_password(password.as_bytes(), &argon2::PasswordHash::new(hash)?)
+}
+
+#[derive(Serialize, Deserialize, Default, Debug)]
+struct Login {
+    name: String,
+    password: String,
+    #[serde(skip)]
+    error: Option<&'static str>,
+}
+
+impl PublicPage for Login {
+    fn render_to_buf(self, buf: &mut String) {
+        let Login { name, password, error } = self;
+        write_html! { (buf)
+            <form "hx-post"="/login" "hx-swap"="outerHTML">
+                if let Some(e) = error { <div class="error">e</div> }
+                <input name="name" type="text" autocomplete="name" placeholder="name" value=name
+                    required maxlength=MAX_NAME_LENGTH>
+                <input name="password" type="password" autocomplete="current-password" placeholder="password"
+                    value=password>
+                <input type="submit" value="submit">
+            </form>
+        }
+    }
+}
+
+impl Login {
+    async fn post(
+        axum::Form(mut data): axum::Form<Self>,
+    ) -> Result<AppendHeaders<[(&'static str, String); 2]>, Html<String>> {
+        // TODO: hash password
+        let mut id = [0u8; 32];
+        db::with(|db| match db.authenticate.query_row((&data.name,), |r| r.get::<_, String>(1)) {
+            Ok(hash) => {
+                if verify_password(&hash, &data.password).is_err() {
+                    data.error = Some("invalid credentials");
+                } else {
+                    getrandom::getrandom(&mut id).unwrap();
+                    if db
+                        .login
+                        .insert((id, &data.name, now() + SESSION_DURATION_SECS))
+                        .log("create session query")
+                        .is_none()
+                    {
+                        data.error = Some("internal server error");
+                    }
+                }
+            }
+            Err(rusqlite::Error::QueryReturnedNoRows) => {
+                data.error = Some("invalid credentials");
+            }
+            Err(e) => {
+                log::error!("foo {e}");
+                data.error = Some("internal server error");
+            }
+        });
+
+        if data.error.is_some() {
+            log::error!("what {:?}", data);
+            Err(data.render())
+        } else {
+            Ok(AppendHeaders([
+                ("hx-location", "/feed".into()),
+                (
+                    "set-cookie",
+                    format!(
+                        "id={}; SameSite=Strict; Secure; Max-Age={SESSION_DURATION_SECS}",
+                        to_hex(&id)
+                    ),
+                ),
+            ]))
+        }
+    }
+
+    async fn delete(session: Session) -> Redirect {
+        _ = db::with(|q| q.logout.execute((session.id,)).log("delete session query"));
+        redirect("/login")
+    }
+}
+
+#[derive(Serialize, Deserialize, Default)]
+struct Signup {
+    name: String,
+    new_password: String,
+    confirm_password: String,
+    #[serde(default)]
+    confirm_no_password: bool,
+    #[serde(skip)]
+    error: Option<&'static str>,
+}
+
+impl PublicPage for Signup {
+    fn render_to_buf(self, buf: &mut String) {
+        let Signup { name, new_password, confirm_password, confirm_no_password, error } = self;
+        let vals = if confirm_no_password { "{\"confirm_no_password\":true}" } else { "{}" };
+        write_html! { (buf)
+            <form "hx-post"="/signup" "hx-swap"="outerHTML" "hx-vals"=vals>
+                if let Some(e) = error { <div class="error">e</div> }
+                <input name="name" type="text" autocomplete="name" placeholder="name" value=name
+                    maxlength=MAX_NAME_LENGTH required>
+                <input name="new_password" type="password" autocomplete="new-password" placeholder="new password"
+                    value=new_password>
+                <input name="confirm_password" type="password" autocomplete="confirm-password"
+                    placeholder="confirm password" value=confirm_password>
+                <input type="submit" value="submit">
+            </form>
+        }
+    }
+}
+
+impl Signup {
+    async fn post(axum::Form(mut data): axum::Form<Self>) -> Result<Redirect, Html<String>> {
+        if data.name.len() > MAX_NAME_LENGTH {
+            data.error = Some(formatcp!("name too long, max length is {MAX_NAME_LENGTH}"));
+            return Err(data.render());
+        }
+
+        if !data.confirm_no_password && data.new_password.is_empty() {
+            data.confirm_no_password = true;
+            data.error = Some("Are you sure you don't want to use a password? (then submit again)");
+            return Err(data.render());
+        }
+
+        db::with(|db| {
+            // TODO: hash passwords
+            match db.register.insert((&data.name, hash_password(&data.new_password))) {
+                Ok(_) => {}
+                Err(rusqlite::Error::SqliteFailure(e, _))
+                    if e.code == rusqlite::ErrorCode::ConstraintViolation =>
+                {
+                    data.error = Some("username already taken");
+                }
+                Err(e) => {
+                    log::error!("create user query: {e}");
+                    data.error = Some("internal server error");
+                }
+            };
+        });
+
+        if data.error.is_some() {
+            Err(data.render())
+        } else {
+            Ok(redirect("/login"))
+        }
+    }
+}
+
+fn base(body: impl FnOnce(&mut String), session: Option<&Session>) -> Html<String> {
+    let username = session.map(|s| &s.name);
+
+    let nav_button = |f: &mut String, name: &str| {
+        write_html! {(f)
+            <button "hx-push-url"={format_args!("/{name}")}
+                "hx-get"={format_args!("/{name}-view")}
+                "hx-target"="main"
+                "hx-swap"="innerHTML">name</button>
+        }
+    };
+
+    Html(html! {
+        "<!DOCTYPE html>"
+        <html lang="en">
+            <head>
+                <meta name="charset" content="UTF-8">
+                <meta name="viewport" content="width=device-width, initial-scale=1">
+                <link rel="stylesheet" href="/index.css">
+            </head>
+            <body>
+                <nav>
+                    <button "hx-push-url"="/" "hx-get"="/index-view" "hx-target"="main" "hx-swap"="innerHTML">"depell"</button>
+                    <section>
+                        if let Some(username) = username {
+                            <button "hx-push-url"="/profile" "hx-get"="/profile-view" "hx-target"="main"
+                                "hx-swap"="innerHTML">username</button>
+                            |f|{nav_button(f, "feed"); nav_button(f, "post")}
+                            <button "hx-delete"="/login">"logout"</button>
+                        } else {
+                            |f|{nav_button(f, "login"); nav_button(f, "signup")}
+                        }
+                    </section>
+                </nav>
+                <section id="post-form"></section>
+                <main>|f|{body(f)}</main>
+            </body>
+            <script src="https://unpkg.com/htmx.org@2.0.3/dist/htmx.min.js" integrity="sha384-0895/pl2MU10Hqc6jd4RvrthNlDiE9U1tWmX7WRESftEDRosgxNsQG/Ze9YMRzHq" crossorigin="anonymous"></script>
+            <script type="module" src="/index.js"></script>
+        </html>
+    })
+}
+
+struct Session {
+    name: String,
+    id: [u8; 32],
+}
+
+#[axum::async_trait]
+impl<S> axum::extract::FromRequestParts<S> for Session {
+    /// If the extractor fails it'll use this "rejection" type. A rejection is
+    /// a kind of error that can be converted into a response.
+    type Rejection = Redirect;
+
+    /// Perform the extraction.
+    async fn from_request_parts(parts: &mut Parts, _: &S) -> Result<Self, Self::Rejection> {
+        let err = redirect("/login");
+
+        let value = parts
+            .headers
+            .get_all(COOKIE)
+            .into_iter()
+            .find_map(|c| c.to_str().ok()?.trim().strip_prefix("id="))
+            .map(|c| c.split_once(';').unwrap_or((c, "")).0)
+            .ok_or(err)?;
+        let mut id = [0u8; 32];
+        parse_hex(value, &mut id).ok_or(err)?;
+
+        let (name, expiration) = db::with(|db| {
+            db.get_session
+                .query_row((id,), |r| Ok((r.get::<_, String>(0)?, r.get::<_, u64>(1)?)))
+                .log("fetching session")
+                .ok_or(err)
+        })?;
+
+        if expiration < now() {
+            return Err(err);
+        }
+
+        Ok(Self { name, id })
+    }
+}
+
+fn now() -> u64 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::SystemTime::UNIX_EPOCH)
+        .unwrap()
+        .as_secs()
+}
+
+fn parse_hex(hex: &str, dst: &mut [u8]) -> Option<()> {
+    fn hex_to_nibble(b: u8) -> Option<u8> {
+        Some(match b {
+            b'a'..=b'f' => b - b'a' + 10,
+            b'A'..=b'F' => b - b'A' + 10,
+            b'0'..=b'9' => b - b'0',
+            _ => return None,
+        })
+    }
+
+    if hex.len() != dst.len() * 2 {
+        return None;
+    }
+
+    for (d, p) in dst.iter_mut().zip(hex.as_bytes().chunks_exact(2)) {
+        *d = (hex_to_nibble(p[0])? << 4) | hex_to_nibble(p[1])?;
+    }
+
+    Some(())
+}
+
+fn to_hex(src: &[u8]) -> String {
+    use std::fmt::Write;
+    let mut buf = String::new();
+    for &b in src {
+        write!(buf, "{b:02x}").unwrap()
+    }
+    buf
+}
+
+fn main() {
+    tokio::runtime::Builder::new_current_thread().enable_all().build().unwrap().block_on(amain());
+}
+
+mod db {
+    use std::cell::RefCell;
+
+    macro_rules! gen_queries {
+        ($vis:vis struct $name:ident {
+            $($qname:ident: $code:expr,)*
+        }) => {
+            $vis struct $name<'a> {
+                $($vis $qname: rusqlite::Statement<'a>,)*
+            }
+
+            impl<'a> $name<'a> {
+                fn new(db: &'a rusqlite::Connection) -> Self {
+                    Self {
+                        $($qname: db.prepare($code).unwrap(),)*
+                    }
+                }
+            }
+        };
+    }
+
+    gen_queries! {
+        pub struct Queries {
+            register: "INSERT INTO user (name, password_hash) VALUES(?, ?)",
+            authenticate: "SELECT name, password_hash FROM user WHERE name = ?",
+            login: "INSERT OR REPLACE INTO session (id, username, expiration) VALUES(?, ?, ?)",
+            logout: "DELETE FROM session WHERE id = ?",
+            get_session: "SELECT username, expiration FROM session WHERE id = ?",
+            get_user_posts: "SELECT author, name, timestamp, code FROM post WHERE author = ?
+                ORDER BY timestamp DESC",
+            get_pots_before: "SELECT author, name, timestamp, code FROM post WHERE timestamp < ?",
+            create_post: "INSERT INTO post (name, author, timestamp, code) VALUES(?, ?, ?, ?)",
+            fetch_deps: "
+                WITH RECURSIVE roots(name, author, code) AS (
+                    SELECT name, author, code FROM post WHERE name = ? AND author = ?
+                    UNION
+                    SELECT post.name, post.author, post.code FROM
+                        post JOIN import ON post.name = import.to_name
+                            AND post.author = import.to_author
+                        JOIN roots ON import.from_name = roots.name
+                            AND import.from_author = roots.author
+                ) SELECT * FROM roots;
+            ",
+            create_import: "INSERT INTO import(to_author, to_name, from_author, from_name)
+                VALUES(?, ?, ?, ?)",
+        }
+    }
+
+    struct Db {
+        queries: Queries<'static>,
+        _db: Box<rusqlite::Connection>,
+    }
+
+    impl Db {
+        fn new() -> Self {
+            let db = Box::new(rusqlite::Connection::open("db.sqlite").unwrap());
+            Self {
+                queries: Queries::new(unsafe {
+                    std::mem::transmute::<&rusqlite::Connection, &rusqlite::Connection>(&db)
+                }),
+                _db: db,
+            }
+        }
+    }
+
+    pub fn with<T>(with: impl FnOnce(&mut Queries) -> T) -> T {
+        thread_local! { static DB_CONN: RefCell<Db> = RefCell::new(Db::new()); }
+        DB_CONN.with_borrow_mut(|q| with(&mut q.queries))
+    }
+
+    pub fn init() {
+        let db = rusqlite::Connection::open("db.sqlite").unwrap();
+        db.execute_batch(include_str!("schema.sql")).unwrap();
+        Queries::new(&db);
+    }
+}
+
+fn redirect(to: &'static str) -> Redirect {
+    AppendHeaders([("hx-location", to)])
+}
+
+trait PublicPage: Default {
+    fn render_to_buf(self, buf: &mut String);
+
+    fn render(self) -> Html<String> {
+        let mut str = String::new();
+        self.render_to_buf(&mut str);
+        Html(str)
+    }
+
+    async fn get() -> Html<String> {
+        Self::default().render()
+    }
+
+    async fn page(session: Option<Session>) -> Html<String> {
+        base(|s| Self::default().render_to_buf(s), session.as_ref())
+    }
+}
+
+trait Page: Default {
+    fn render_to_buf(self, session: &Session, buf: &mut String);
+
+    fn render(self, session: &Session) -> Html<String> {
+        let mut str = String::new();
+        self.render_to_buf(session, &mut str);
+        Html(str)
+    }
+
+    async fn get(session: Session) -> Html<String> {
+        Self::default().render(&session)
+    }
+
+    async fn page(session: Option<Session>) -> Result<Html<String>, axum::response::Redirect> {
+        match session {
+            Some(session) => {
+                Ok(base(|f| Self::default().render_to_buf(&session, f), Some(&session)))
+            }
+            None => Err(axum::response::Redirect::permanent("/login")),
+        }
+    }
+}
+
+trait ResultExt<O, E> {
+    fn log(self, prefix: impl Display) -> Option<O>;
+}
+
+impl<O, E: Display> ResultExt<O, E> for Result<O, E> {
+    fn log(self, prefix: impl Display) -> Option<O> {
+        match self {
+            Ok(v) => Some(v),
+            Err(e) => {
+                log::error!("{prefix}: {e}");
+                None
+            }
+        }
+    }
+}
+
+struct Logger;
+
+impl log::Log for Logger {
+    fn enabled(&self, _: &log::Metadata) -> bool {
+        true
+    }
+
+    fn log(&self, record: &log::Record) {
+        if self.enabled(record.metadata()) {
+            eprintln!("{} - {}", record.module_path().unwrap_or("=="), record.args());
+        }
+    }
+
+    fn flush(&self) {}
+}

depell/src/post-page.html

@@ -0,0 +1,21 @@
+<div id="dep-list">
+	<input placeholder="search impoted deps.." oninput="filterCodeDeps(this, event)">
+	<section id="deps">
+		results show here...
+	</section>
+</div>
+
+<div>
+
+	<h3>About posting code</h3>
+	<p>
+		If you are unfammiliar with <a href="https://git.ablecorp.us/AbleOS/holey-bytes">hblang</a>, refer to the
+		<strong>hblang/README.md</strong> or
+		vizit <a href="/profile/mlokis">mlokis'es posts</a>. Preferably don't edit the code here.
+	</p>
+
+	<h3>Extra textarea features</h3>
+	<ul>
+		<li>proper tab behaviour</li>
+		<li>snap to previous tab boundary on "empty" lines</li>
+	</ul>

depell/src/schema.sql

@@ -0,0 +1,55 @@
+PRAGMA foreign_keys = ON;
+
+CREATE TABLE IF NOT EXISTS user(
+	name TEXT NOT NULL,
+	password_hash TEXT NOT NULL,
+	PRIMARY KEY (name)
+) WITHOUT ROWID;
+
+CREATE TABLE IF NOT EXISTS session(
+	id BLOB NOT NULL,
+	username TEXT NOT NULL,
+	expiration INTEGER NOT NULL,
+	FOREIGN KEY (username) REFERENCES user (name)
+	PRIMARY KEY (username)
+) WITHOUT ROWID;
+
+CREATE UNIQUE INDEX IF NOT EXISTS
+	session_id ON session (id);
+
+CREATE TABLE IF NOT EXISTS post(
+	name TEXT NOT NULL,
+	author TEXT,
+	timestamp INTEGER,
+	code TEXT NOT NULL,
+	FOREIGN KEY (author) REFERENCES user(name) ON DELETE SET NULL,
+	PRIMARY KEY (author, name)
+);
+
+CREATE INDEX IF NOT EXISTS
+	post_timestamp ON post(timestamp DESC);
+
+CREATE TABLE IF NOT EXISTS import(
+	from_name TEXT NOT NULL,
+	from_author TEXT,
+	to_name TEXT NOT NULL,
+	to_author TEXT,
+	FOREIGN KEY (from_name, from_author) REFERENCES post(name, author),
+	FOREIGN KEY (to_name, to_author) REFERENCES post(name, author)
+);
+
+CREATE INDEX IF NOT EXISTS
+	dependencies ON import(from_name, from_author);
+
+CREATE INDEX IF NOT EXISTS
+	dependants ON import(to_name, to_author);
+
+CREATE TABLE IF NOT EXISTS run(
+	code_name TEXT NOT NULL,
+	code_author TEXT NOT NULL,
+	runner TEXT NOT NULL,
+	FOREIGN KEY (code_name, code_author) REFERENCES post(name, author),
+	FOREIGN KEY (runner) REFERENCES user(name),
+	PRIMARY KEY (code_name, code_author, runner)
+);
+

depell/src/welcome-page.html

@@ -0,0 +1,17 @@
+<h1>Welcome to depell</h1>
+<p>
+	Depell (dependency hell) is a simple "social" media site best compared to twitter, except that all you can post is
+	<a href="https://git.ablecorp.us/AbleOS/holey-bytes">hblang</a> code with no comments allowed. Instead of likes you
+	run the program, and instead of retweets you import the program as dependency. Run counts even when ran indirectly.
+</p>
+
+<p>
+	The backend only serves the code and frontend compiles and runs it locally. All posts are immutable.
+</p>
+
+<h2>Security?</h2>
+<p>
+	All code runs in WASM (inside a holey-bytes VM until hblang compiles to wasm) and is controlled by JavaScript. WASM
+	cant do any form of IO without going trough JavaScript so as long as JS import does not allow wasm to execute
+	arbitrary JS code, WASM can act as a container inside the JS.
+</p>

depell/wasm-fmt/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "wasm-hbfmt"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+hblang = { workspace = true, features = ["no_log"] }
+wasm-rt = { version = "0.1.0", path = "../wasm-rt" }

depell/wasm-fmt/src/lib.rs

@@ -0,0 +1,34 @@
+#![no_std]
+#![feature(str_from_raw_parts)]
+#![feature(alloc_error_handler)]
+
+use hblang::{fmt, parser};
+
+wasm_rt::decl_runtime!(128 * 1024, 1024 * 4);
+
+const MAX_OUTPUT_SIZE: usize = 1024 * 10;
+wasm_rt::decl_buffer!(MAX_OUTPUT_SIZE, MAX_OUTPUT, OUTPUT, OUTPUT_LEN);
+
+const MAX_INPUT_SIZE: usize = 1024 * 4;
+wasm_rt::decl_buffer!(MAX_INPUT_SIZE, MAX_INPUT, INPUT, INPUT_LEN);
+
+#[no_mangle]
+unsafe extern "C" fn fmt() {
+    ALLOCATOR.reset();
+
+    let code = core::str::from_raw_parts(core::ptr::addr_of!(INPUT).cast(), INPUT_LEN);
+
+    let arena = parser::Arena::with_capacity(code.len() * parser::SOURCE_TO_AST_FACTOR);
+    let mut ctx = parser::Ctx::default();
+    let exprs = parser::Parser::parse(&mut ctx, code, "source.hb", &mut parser::no_loader, &arena);
+
+    let mut f = wasm_rt::Write(&mut OUTPUT[..]);
+    fmt::fmt_file(exprs, code, &mut f).unwrap();
+    OUTPUT_LEN = MAX_OUTPUT_SIZE - f.0.len();
+}
+
+#[no_mangle]
+unsafe extern "C" fn minify() {
+    let code = core::str::from_raw_parts_mut(core::ptr::addr_of_mut!(OUTPUT).cast(), OUTPUT_LEN);
+    OUTPUT_LEN = fmt::minify(code);
+}

depell/wasm-hbc/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "wasm-hbc"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+hblang = { workspace = true, features = [] }
+hbvm.workspace = true
+log = { version = "0.4.22", features = ["release_max_level_error"] }
+wasm-rt = { version = "0.1.0", path = "../wasm-rt", features = ["log"] }
+

depell/wasm-hbc/src/lib.rs

@@ -0,0 +1,119 @@
+#![feature(alloc_error_handler)]
+#![feature(slice_take)]
+#![no_std]
+
+use {
+    alloc::{string::String, vec::Vec},
+    hblang::{
+        son::{hbvm::HbvmBackend, Codegen, CodegenCtx},
+        ty::Module,
+        Ent,
+    },
+};
+
+extern crate alloc;
+
+const ARENA_CAP: usize = 128 * 16 * 1024;
+wasm_rt::decl_runtime!(ARENA_CAP, 1024 * 4);
+
+const MAX_INPUT_SIZE: usize = 32 * 4 * 1024;
+wasm_rt::decl_buffer!(MAX_INPUT_SIZE, MAX_INPUT, INPUT, INPUT_LEN);
+
+#[no_mangle]
+unsafe fn compile_and_run(mut fuel: usize) {
+    ALLOCATOR.reset();
+
+    _ = log::set_logger(&wasm_rt::Logger);
+    log::set_max_level(log::LevelFilter::Error);
+
+    struct File<'a> {
+        path: &'a str,
+        code: &'a mut str,
+    }
+
+    let mut root = 0;
+
+    let files = {
+        let mut input_bytes =
+            core::slice::from_raw_parts_mut(core::ptr::addr_of_mut!(INPUT).cast::<u8>(), INPUT_LEN);
+
+        let mut files = Vec::with_capacity(32);
+        while let Some((&mut path_len, rest)) = input_bytes.split_first_chunk_mut() {
+            let (path, rest) = rest.split_at_mut(u16::from_le_bytes(path_len) as usize);
+            let (&mut code_len, rest) = rest.split_first_chunk_mut().unwrap();
+            let (code, rest) = rest.split_at_mut(u16::from_le_bytes(code_len) as usize);
+            files.push(File {
+                path: core::str::from_utf8_unchecked(path),
+                code: core::str::from_utf8_unchecked_mut(code),
+            });
+            input_bytes = rest;
+        }
+
+        let root_path = files[root].path;
+        hblang::quad_sort(&mut files, |a, b| a.path.cmp(b.path));
+        root = files.binary_search_by_key(&root_path, |p| p.path).unwrap();
+
+        files
+    };
+
+    let mut ctx = CodegenCtx::default();
+
+    let files = {
+        let paths = files.iter().map(|f| f.path).collect::<Vec<_>>();
+        let mut loader = |path: &str, _: &str, kind| match kind {
+            hblang::parser::FileKind::Module => Ok(paths.binary_search(&path).unwrap()),
+            hblang::parser::FileKind::Embed => Err("embeds are not supported".into()),
+        };
+        files
+            .into_iter()
+            .map(|f| {
+                hblang::parser::Ast::new(
+                    f.path,
+                    // since 'free' does nothing this is fine
+                    String::from_raw_parts(f.code.as_mut_ptr(), f.code.len(), f.code.len()),
+                    &mut ctx.parser,
+                    &mut loader,
+                )
+            })
+            .collect::<Vec<_>>()
+    };
+
+    let mut ct = {
+        let mut backend = HbvmBackend::default();
+        Codegen::new(&mut backend, &files, &mut ctx).generate(Module::new(root));
+
+        if !ctx.parser.errors.borrow().is_empty() {
+            log::error!("{}", ctx.parser.errors.borrow());
+            return;
+        }
+
+        let mut c = Codegen::new(&mut backend, &files, &mut ctx);
+        c.assemble_comptime()
+    };
+
+    while fuel != 0 {
+        match ct.vm.run() {
+            Ok(hbvm::VmRunOk::End) => {
+                log::error!("exit code: {}", ct.vm.read_reg(1).0 as i64);
+                break;
+            }
+            Ok(hbvm::VmRunOk::Ecall) => {
+                let unknown = ct.vm.read_reg(2).0;
+                log::error!("unknown ecall: {unknown}")
+            }
+            Ok(hbvm::VmRunOk::Timer) => {
+                fuel -= 1;
+                if fuel == 0 {
+                    log::error!("program timed out");
+                }
+            }
+            Ok(hbvm::VmRunOk::Breakpoint) => todo!(),
+            Err(e) => {
+                log::error!("vm error: {e}");
+                break;
+            }
+        }
+    }
+
+    //log::error!("memory consumption: {}b / {}b", ALLOCATOR.used(), ARENA_CAP);
+}

depell/wasm-rt/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "wasm-rt"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+log = { version = "0.4.22", optional = true }

depell/wasm-rt/src/lib.rs

@@ -0,0 +1,162 @@
+#![feature(alloc_error_handler)]
+#![feature(pointer_is_aligned_to)]
+#![feature(slice_take)]
+#![no_std]
+
+use core::{
+    alloc::{GlobalAlloc, Layout},
+    cell::UnsafeCell,
+};
+
+extern crate alloc;
+
+#[macro_export]
+macro_rules! decl_buffer {
+    ($cap:expr, $export_cap:ident, $export_base:ident, $export_len:ident) => {
+        #[no_mangle]
+        static $export_cap: usize = $cap;
+        #[no_mangle]
+        static mut $export_base: [u8; $cap] = [0; $cap];
+        #[no_mangle]
+        static mut $export_len: usize = 0;
+    };
+}
+
+#[macro_export]
+macro_rules! decl_runtime {
+    ($memory_size:expr, $max_panic_size:expr) => {
+        #[cfg(debug_assertions)]
+        #[no_mangle]
+        static mut PANIC_MESSAGE: [u8; $max_panic_size] = [0; $max_panic_size];
+        #[cfg(debug_assertions)]
+        #[no_mangle]
+        static mut PANIC_MESSAGE_LEN: usize = 0;
+
+        #[cfg(target_arch = "wasm32")]
+        #[panic_handler]
+        pub fn handle_panic(_info: &core::panic::PanicInfo) -> ! {
+            #[cfg(debug_assertions)]
+            {
+                unsafe {
+                    use core::fmt::Write;
+                    let mut f = $crate::Write(&mut PANIC_MESSAGE[..]);
+                    _ = writeln!(f, "{}", _info);
+                    PANIC_MESSAGE_LEN = $max_panic_size - f.0.len();
+                }
+            }
+
+            core::arch::wasm32::unreachable();
+        }
+
+        #[global_allocator]
+        static ALLOCATOR: $crate::ArenaAllocator<{ $memory_size }> = $crate::ArenaAllocator::new();
+
+        #[cfg(target_arch = "wasm32")]
+        #[alloc_error_handler]
+        fn alloc_error(_: core::alloc::Layout) -> ! {
+            #[cfg(debug_assertions)]
+            {
+                unsafe {
+                    use core::fmt::Write;
+                    let mut f = $crate::Write(&mut PANIC_MESSAGE[..]);
+                    _ = writeln!(f, "out of memory");
+                    PANIC_MESSAGE_LEN = $max_panic_size - f.0.len();
+                }
+            }
+
+            core::arch::wasm32::unreachable()
+        }
+    };
+}
+
+#[cfg(feature = "log")]
+pub struct Logger;
+
+#[cfg(feature = "log")]
+impl log::Log for Logger {
+    fn enabled(&self, _: &log::Metadata) -> bool {
+        true
+    }
+
+    fn log(&self, record: &log::Record) {
+        if self.enabled(record.metadata()) {
+            const MAX_LOG_MESSAGE: usize = 1024 * 8;
+            #[no_mangle]
+            static mut LOG_MESSAGES: [u8; MAX_LOG_MESSAGE] = [0; MAX_LOG_MESSAGE];
+            #[no_mangle]
+            static mut LOG_MESSAGES_LEN: usize = 0;
+
+            unsafe {
+                use core::fmt::Write;
+                let mut f = Write(&mut LOG_MESSAGES[LOG_MESSAGES_LEN..]);
+                _ = writeln!(f, "{}", record.args());
+                LOG_MESSAGES_LEN = MAX_LOG_MESSAGE - f.0.len();
+            }
+        }
+    }
+
+    fn flush(&self) {}
+}
+
+pub struct ArenaAllocator<const SIZE: usize> {
+    arena: UnsafeCell<[u8; SIZE]>,
+    head: UnsafeCell<*mut u8>,
+}
+
+impl<const SIZE: usize> ArenaAllocator<SIZE> {
+    #[expect(clippy::new_without_default)]
+    pub const fn new() -> Self {
+        ArenaAllocator {
+            arena: UnsafeCell::new([0; SIZE]),
+            head: UnsafeCell::new(core::ptr::null_mut()),
+        }
+    }
+
+    #[expect(clippy::missing_safety_doc)]
+    pub unsafe fn reset(&self) {
+        (*self.head.get()) = self.arena.get().cast::<u8>().add(SIZE);
+    }
+
+    pub fn used(&self) -> usize {
+        unsafe { self.arena.get() as usize + SIZE - (*self.head.get()) as usize }
+    }
+}
+
+unsafe impl<const SIZE: usize> Sync for ArenaAllocator<SIZE> {}
+
+unsafe impl<const SIZE: usize> GlobalAlloc for ArenaAllocator<SIZE> {
+    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
+        let size = layout.size();
+        let align = layout.align();
+
+        let until = self.arena.get() as *mut u8;
+
+        let new_head = (*self.head.get()).sub(size);
+        let aligned_head = (new_head as usize & !(align - 1)) as *mut u8;
+        debug_assert!(aligned_head.is_aligned_to(align));
+
+        if until > aligned_head {
+            return core::ptr::null_mut();
+        }
+
+        *self.head.get() = aligned_head;
+        aligned_head
+    }
+
+    unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {
+        /* lol */
+    }
+}
+
+pub struct Write<'a>(pub &'a mut [u8]);
+
+impl core::fmt::Write for Write<'_> {
+    fn write_str(&mut self, s: &str) -> core::fmt::Result {
+        if let Some(m) = self.0.take_mut(..s.len()) {
+            m.copy_from_slice(s.as_bytes());
+            Ok(())
+        } else {
+            Err(core::fmt::Error)
+        }
+    }
+}

hbbytecode/build.rs

@@ -1,58 +0,0 @@
-#![feature(iter_next_chunk)]
-
-fn main() -> Result<(), Box<dyn std::error::Error>> {
-    println!("cargo:rerun-if-changed=build.rs");
-    println!("cargo:rerun-if-changed=instructions.in");
-
-    let mut generated = String::new();
-    gen_op_structs(&mut generated)?;
-    std::fs::write("src/ops.rs", generated)?;
-
-    let mut generated = String::new();
-    gen_op_codes(&mut generated)?;
-    std::fs::write("src/opcode.rs", generated)?;
-
-    Ok(())
-}
-
-fn gen_op_structs(generated: &mut String) -> std::fmt::Result {
-    use std::fmt::Write;
-    let mut seen = std::collections::HashSet::new();
-    writeln!(generated, "use crate::*;")?;
-    for [.., args, _] in instructions() {
-        if !seen.insert(args) {
-            continue;
-        }
-
-        writeln!(generated, "#[derive(Clone, Copy, Debug)]")?;
-        writeln!(generated, "#[repr(packed)]")?;
-        write!(generated, "pub struct Ops{args}(")?;
-        let mut first = true;
-        for ch in args.chars().filter(|&ch| ch != 'N') {
-            if !std::mem::take(&mut first) {
-                write!(generated, ",")?;
-            }
-            write!(generated, "pub Op{ch}")?;
-        }
-        writeln!(generated, ");")?;
-        writeln!(generated, "unsafe impl BytecodeItem for Ops{args} {{}}")?;
-    }
-
-    Ok(())
-}
-
-fn gen_op_codes(generated: &mut String) -> std::fmt::Result {
-    use std::fmt::Write;
-    for [op, name, _, comment] in instructions() {
-        writeln!(generated, "#[doc = {comment}]")?;
-        writeln!(generated, "pub const {name}: u8 = {op};")?;
-    }
-    Ok(())
-}
-
-fn instructions() -> impl Iterator<Item = [&'static str; 4]> {
-    include_str!("../hbbytecode/instructions.in")
-        .lines()
-        .map(|line| line.strip_suffix(';').unwrap())
-        .map(|line| line.splitn(4, ',').map(str::trim).next_chunk().unwrap())
-}

hbbytecode/src/lib.rs

@@ -1,41 +0,0 @@
-#![no_std]
-
-pub use crate::ops::*;
-use core::convert::TryFrom;
-
-pub mod opcode;
-mod ops;
-
-type OpR = u8;
-
-type OpA = u64;
-type OpO = i32;
-type OpP = i16;
-
-type OpB = u8;
-type OpH = u16;
-type OpW = u32;
-type OpD = u64;
-
-/// # Safety
-/// Has to be valid to be decoded from bytecode.
-pub unsafe trait BytecodeItem {}
-unsafe impl BytecodeItem for u8 {}
-
-/// Rounding mode
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-#[repr(u8)]
-pub enum RoundingMode {
-    NearestEven = 0,
-    Truncate = 1,
-    Up = 2,
-    Down = 3,
-}
-
-impl TryFrom<u8> for RoundingMode {
-    type Error = ();
-
-    fn try_from(value: u8) -> Result<Self, Self::Error> {
-        (value <= 3).then(|| unsafe { core::mem::transmute(value) }).ok_or(())
-    }
-}

hbjit/Cargo.toml

@@ -1,6 +0,0 @@
-[package]
-name = "hbjit"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]

hbjit/src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}

hblang/Cargo.toml

@@ -1,14 +0,0 @@
-[package]
-name = "hblang"
-version = "0.1.0"
-edition = "2021"
-
-[[bin]]
-name = "hbc"
-path = "src/main.rs"
-
-[dependencies]
-env_logger = "0.11.5"
-hbvm = { path = "../hbvm", features = ["nightly"] }
-log = "0.4.22"
-regalloc2 = { version = "0.10.2", features = ["trace-log"] }

hblang/README.md

@@ -1,945 +0,0 @@
-# HERE SHALL THE DOCUMENTATION RESIDE
-
-## Enforced Political Views
-
-- worse is better
-- less is more
-- embrace `unsafe {}`
-- adhere `macro_rules!`
-- pessimization == death (put in `std::pin::Pin` and left with hungry crabs)
-- importing external dependencies == death (`fn(dependencies) -> ExecutionStrategy`)
-- above sell not be disputed, discussed, or questioned
-
-## What hblang is
-
-Holey-Bytes-Language (hblang for short) (*.hb) is the only true language targeting hbvm byte code. hblang is low level, manually managed, and procedural. Its rumored to be better then writing hbasm and you should probably use it for complex applications.
-
-## What hblang isnt't
-
-hblang knows what it isn't, because it knows what it is, hblang computes this by sub...
-
-
-## Examples
-
-Examples are also used in tests. To add an example that runs during testing add:
-<pre>
-#### &lt;name&gt
-```hb
-&lt;example&gt
-```
-</pre>
-and also:
-```rs
-<name> => README;
-```
-to the `run_tests` macro at the bottom of the `src/codegen.rs`.
-
-### Tour Examples
-
-Following examples incrementally introduce language features and syntax.
-
-#### main_fn
-```hb
-main := fn(): int {
-	return 1;
-}
-```
-
-#### arithmetic
-```hb
-main := fn(): int {
-	return 10 - 20 / 2 + 4 * (2 + 2) - 4 * 4 + (1 << 0) + -1
-}
-```
-
-#### functions
-```hb
-main := fn(): int {
-	return add_one(10) + add_two(20)
-}
-
-add_two := fn(x: int): int {
-	return x + 2
-}
-
-add_one := fn(x: int): int {
-	return x + 1
-}
-```
-
-#### comments
-```hb
-// commant is an item
-main := fn(): int {
-	// comment is a statement
-
-	foo(/* comment is an exprression /* if you are crazy */ */)
-	return 0
-}
-
-foo := fn(comment: void): void return /* comment evaluates to void */
-
-// comments might be formatted in the future
-```
-
-#### if_statements
-```hb
-main := fn(): int {
-	return fib(10)
-}
-
-fib := fn(x: int): int {
-	if x <= 2 {
-		return 1
-	} else {
-		return fib(x - 1) + fib(x - 2)
-	}
-}
-```
-
-#### variables
-```hb
-main := fn(): int {
-	ඞ := 1
-	b := 2
-	ඞ += 1
-	return ඞ - b
-}
-```
-
-#### loops
-```hb
-main := fn(): int {
-	return fib(10)
-}
-
-fib := fn(n: int): int {
-	a := 0
-	b := 1
-	loop if n == 0 break else {
-		c := a + b
-		a = b
-		b = c
-		n -= 1
-	}
-	return a
-}
-```
-
-#### pointers
-```hb
-main := fn(): int {
-	a := 1
-	b := &a
-	modify(b)
-	drop(a)
-	stack_reclamation_edge_case := 0
-	return *b - 2
-}
-
-modify := fn(a: ^int): void {
-	*a = 2
-	return
-}
-
-drop := fn(a: int): void {
-	return
-}
-```
-
-#### structs
-```hb
-Ty := struct {
-	// comment
-
-	a: int,
-	b: int,
-}
-
-Ty2 := struct {
-	ty: Ty,
-	c: int,
-}
-
-main := fn(): int {
-	finst := Ty2.{ty: Ty.{a: 4, b: 1}, c: 3}
-	inst := odher_pass(finst)
-	if inst.c == 3 {
-		return pass(&inst.ty)
-	}
-	return 0
-}
-
-pass := fn(t: ^Ty): int {
-	.{a, b} := *t
-	return a - b
-}
-
-odher_pass := fn(t: Ty2): Ty2 {
-	return t
-}
-```
-
-#### struct_operators
-```hb
-Point := struct {
-	x: int,
-	y: int,
-}
-
-Rect := struct {
-	a: Point,
-	b: Point,
-}
-
-main := fn(): int {
-	a := Point.(1, 2)
-	b := Point.(3, 4)
-
-	d := Rect.(a + b, b - a)
-	d2 := Rect.(Point.(0, 0) - b, a)
-	d2 += d
-
-	c := d2.a + d2.b
-	return c.x + c.y
-}
-```
-
-#### global_variables
-```hb
-global_var := 10
-
-complex_global_var := fib(global_var) - 5
-
-fib := fn(n: int): int {
-	if 2 > n {
-		return n
-	}
-	return fib(n - 1) + fib(n - 2)
-}
-
-main := fn(): int {
-	complex_global_var += 5
-	return complex_global_var
-}
-```
-note: values of global variables are evaluated at compile time
-
-#### directives
-```hb
-foo := @use("foo.hb")
-
-main := fn(): int {
-	byte := @as(u8, 10)
-	same_type_as_byte := @as(@TypeOf(byte), 30)
-	wide_uint := @as(u32, 40)
-	truncated_uint := @as(u8, @intcast(wide_uint))
-	size_of_Type_in_bytes := @sizeof(foo.Type)
-	align_of_Type_in_bytes := @alignof(foo.Type)
-	hardcoded_pointer := @as(^u8, @bitcast(10))
-	ecall_that_returns_int := @as(int, @eca(1, foo.Type.(10, 20), 5, 6))
-	return @inline(foo.foo)
-}
-
-// in module: foo.hb
-
-Type := struct {
-	brah: int,
-	blah: int,
-}
-
-foo := fn(): int return 0
-```
-
-- `@use(<string>)`: imports a module based of string, the string is passed to a loader that can be customized, default loader uses following syntax:
-	- `((rel:|)(<path>)|git:<git-addr>:<path>)`: `rel:` and `''` prefixes both mean module is located at `path` relavive to the current file, `git:` takes a git url without `https://` passed as `git-addr`, `path` then refers to file within the repository
-- `@TypeOf(<expr>)`: results into literal type of whatever the type of `<expr>` is, `<expr>` is not included in final binary
-- `@as(<ty>, <expr>)`: hint to the compiler that  `@TypeOf(<expr>) == <ty>`
-- `@intcast(<expr>)`: needs to be used when conversion of `@TypeOf(<expr>)` would loose precision (widening of integers is implicit)
-- `@sizeof(<ty>), @alignof(<ty>)`: I think explaining this would insult your intelligence
-- `@bitcast(<expr>)`: tell compiler to assume `@TypeOf(<expr>)` is whatever is inferred, so long as size and alignment did not change
-- `@eca(<ty>, ...<expr>)`: invoke `eca` instruction, where `<ty>` is the type this will return and `<expr>...` are arguments passed to the call
-- `@inline(<func>, ...<args>)`: equivalent to `<func>(...<args>)` but function is guaranteed to inline, compiler will otherwise never inline
-
-#### c_strings
-```hb
-str_len := fn(str: ^u8): int {
-	len := 0
-	loop if *str == 0 break else {
-		len += 1
-		str += 1
-	}
-	return len
-}
-
-main := fn(): int {
-	// when string ends with '\0' its a C string and thus type is '^u8'
-	some_str := "abඞ\n\r\t\{35}\{36373839}\0"
-	len := str_len(some_str)
-	some_other_str := "fff\0"
-	lep := str_len(some_other_str)
-	return lep + len
-}
-```
-
-#### struct_patterns
-```hb
-.{fib, fib_iter, Fiber} := @use("fibs.hb")
-
-main := fn(): int {
-	.{a, b} := Fiber.{a: 10, b: 10}
-	return fib(a) - fib_iter(b)
-}
-
-// in module: fibs.hb
-
-Fiber := struct {a: u8, b: u8}
-
-fib := fn(n: int): int if n < 2 {
-	return n
-} else {
-	return fib(n - 1) + fib(n - 2)
-}
-
-fib_iter := fn(n: int): int {
-	a := 0
-	b := 1
-	loop if n == 0 break else {
-		c := a + b
-		a = b
-		b = c
-		n -= 1
-	}
-	return a
-}
-```
-
-#### arrays
-```hb
-main := fn(): int {
-	addr := @as(u16, 0x1FF)
-	msg := [u8].(0, 0, @as(u8, addr & 0xFF), @as(u8, addr >> 8 & 0xFF))
-	_force_stack := &msg
-
-	arr := [int].(1, 2, 4)
-	return pass(&arr) + msg[3]
-}
-
-pass := fn(arr: ^[int; 3]): int {
-	return arr[0] + arr[1] + arr[arr[1]]
-}
-```
-
-#### inline
-```hb
-main := fn(): int {
-	return @inline(foo, 1, 2, 3) - 6
-}
-
-foo := fn(a: int, b: int, c: int): int {
-	return a + b + c
-}
-```
-
-#### idk
-```hb
-_edge_case := @as(int, idk)
-
-main := fn(): int {
-	big_array := @as([u8; 128], idk)
-	i := 0
-	loop if i >= 128 break else {
-		big_array[i] = 69
-		i += 1
-	}
-	return big_array[42]
-}
-```
-
-#### wide_ret
-```hb
-OemIdent := struct {
-	dos_version: [u8; 8],
-	dos_version_name: [u8; 8],
-}
-
-Stru := struct {
-	a: u16,
-	b: u16,
-}
-
-small_struct := fn(): Stru {
-	return .{a: 0, b: 0}
-}
-
-main := fn(major: int, minor: int): OemIdent {
-	small_struct()
-	ver := [u8].(0, 0, 0, 0, 0, 0, 0, 0)
-	return OemIdent.(ver, ver)
-}
-```
-
-### Incomplete Examples
-
-#### comptime_pointers
-```hb
-main := fn(): int {
-	$integer := 7
-	modify(&integer)
-	return integer
-}
-
-modify := fn($num: ^int): void {
-	$: *num = 0
-}
-```
-
-#### generic_types
-```hb
-MALLOC_SYS_CALL := 69
-FREE_SYS_CALL := 96
-
-malloc := fn(size: uint, align: uint): ^void return @eca(MALLOC_SYS_CALL, size, align)
-free := fn(ptr: ^void, size: uint, align: uint): void return @eca(FREE_SYS_CALL, ptr, size, align)
-
-Vec := fn($Elem: type): type {
-	return struct {
-		data: ^Elem,
-		len: uint,
-		cap: uint,
-	}
-}
-
-new := fn($Elem: type): Vec(Elem) return Vec(Elem).{data: @bitcast(0), len: 0, cap: 0}
-
-deinit := fn($Elem: type, vec: ^Vec(Elem)): void {
-	free(@bitcast(vec.data), vec.cap * @sizeof(Elem), @alignof(Elem));
-	*vec = new(Elem)
-	return
-}
-
-push := fn($Elem: type, vec: ^Vec(Elem), value: Elem): ^Elem {
-	if vec.len == vec.cap {
-		if vec.cap == 0 {
-			vec.cap = 1
-		} else {
-			vec.cap *= 2
-		}
-
-		new_alloc := @as(^Elem, @bitcast(malloc(vec.cap * @sizeof(Elem), @alignof(Elem))))
-		if new_alloc == 0 return 0
-
-		src_cursor := vec.data
-		dst_cursor := new_alloc
-		end := vec.data + vec.len
-
-		loop if src_cursor == end break else {
-			*dst_cursor = *src_cursor
-			src_cursor += 1
-			dst_cursor += 1
-		}
-
-		if vec.len != 0 {
-			free(@bitcast(vec.data), vec.len * @sizeof(Elem), @alignof(Elem))
-		}
-		vec.data = new_alloc
-	}
-
-	slot := vec.data + vec.len;
-	*slot = value
-	vec.len += 1
-	return slot
-}
-
-main := fn(): int {
-	vec := new(int)
-	push(int, &vec, 69)
-	res := *vec.data
-	deinit(int, &vec)
-	return res
-}
-```
-
-#### generic_functions
-```hb
-add := fn($T: type, a: T, b: T): T return a + b
-
-main := fn(): int {
-	return add(u32, 2, 2) - add(int, 1, 3)
-}
-```
-
-#### fb_driver
-```hb
-arm_fb_ptr := fn(): int return 100
-x86_fb_ptr := fn(): int return 100
-
-check_platform := fn(): int {
-	return x86_fb_ptr()
-}
-
-set_pixel := fn(x: int, y: int, width: int): int {
-	return y * width + x
-}
-
-main := fn(): int {
-	fb_ptr := check_platform()
-	width := 100
-	height := 30
-	x := 0
-	y := 0
-	//t := 0
-	i := 0
-
-	loop {
-		if x < height {
-			//t += set_pixel(x, y, height)
-			x += 1
-			i += 1
-		} else {
-			x = 0
-			y += 1
-			if set_pixel(x, y, height) != i return 0
-			if y == width break
-		}
-	}
-	return i
-}
-```
-
-### Purely Testing Examples
-
-#### comptime_min_reg_leak
-```hb
-a := @use("math.hb").min(100, 50)
-
-main := fn(): int {
-	return a
-}
-
-// in module: math.hb
-
-SIZEOF_INT := 32
-SHIFT := SIZEOF_INT - 1
-min := fn(a: int, b: int): int {
-	c := a - b
-	return b + (c & c >> SHIFT)
-}
-```
-
-#### different_types
-```hb
-Color := struct {
-	r: u8,
-	g: u8,
-	b: u8,
-	a: u8,
-}
-
-Point := struct {
-	x: u32,
-	y: u32,
-}
-
-Pixel := struct {
-	color: Color,
-	point: Point,
-}
-
-main := fn(): int {
-	pixel := Pixel.{
-		color: Color.{
-			r: 255,
-			g: 0,
-			b: 0,
-			a: 255,
-		},
-		point: Point.{
-			x: 0,
-			y: 2,
-		},
-	}
-
-	soupan := 1
-	if *(&pixel.point.x + soupan) != 2 {
-		return 0
-	}
-
-	if *(&pixel.point.y - 1) != 0 {
-		return 64
-	}
-
-	return pixel.point.x + pixel.point.y + pixel.color.r
-		+ pixel.color.g + pixel.color.b + pixel.color.a
-}
-```
-
-#### struct_return_from_module_function
-```hb
-bar := @use("bar.hb")
-
-main := fn(): int {
-	return 7 - bar.foo().x - bar.foo().y - bar.foo().z
-}
-
-// in module: bar.hb
-
-
-foo := fn(): Foo {
-	return .{x: 3, y: 2, z: 2}
-}
-
-Foo := struct {x: int, y: u32, z: u32}
-```
-
-#### sort_something_viredly
-```hb
-main := fn(): int {
-	foo := sqrt
-	return 0
-}
-
-sqrt := fn(x: int): int {
-	temp := 0
-	g := 0
-	b := 32768
-	bshift := 15
-	loop if b == 0 break else {
-		bshift -= 1
-		temp = b + (g << 1)
-		temp <<= bshift
-		if x >= temp {
-			g += b
-			x -= temp
-		}
-		b >>= 1
-	}
-	return g
-}
-```
-
-#### hex_octal_binary_literals
-```hb
-main := fn(): int {
-	hex := 0xFF
-	decimal := 255
-	octal := 0o377
-	binary := 0b11111111
-
-	if hex == decimal & octal == decimal & binary == decimal {
-		return 0
-	}
-	return 1
-}
-```
-
-#### structs_in_registers
-```hb
-ColorBGRA := struct {b: u8, g: u8, r: u8, a: u8}
-MAGENTA := ColorBGRA.{b: 205, g: 0, r: 205, a: 255}
-
-main := fn(): int {
-	color := MAGENTA
-	return color.r
-}
-```
-
-#### comptime_function_from_another_file
-```hb
-stn := @use("stn.hb")
-
-CONST_A := 100
-CONST_B := 50
-a := stn.math.min(CONST_A, CONST_B)
-
-main := fn(): int {
-	return a
-}
-
-// in module: stn.hb
-math := @use("math.hb")
-
-// in module: math.hb
-SIZEOF_INT := 32
-SHIFT := SIZEOF_INT - 1
-min := fn(a: int, b: int): int {
-	c := a - b
-	return b + (c & c >> SHIFT)
-}
-```
-
-### Just Testing Optimizations
-
-#### const_folding_with_arg
-```hb
-main := fn(arg: int): int {
-	// reduces to 0
-	return arg + 0 - arg * 1 + arg + 1 + arg + 2 + arg + 3 - arg * 3 - 6
-}
-```
-
-#### branch_assignments
-```hb
-main := fn(arg: int): int {
-	if arg == 1 {
-		arg = 1
-	} else if arg == 0 {
-		arg = 2
-	} else {
-		arg = 3
-	}
-	return arg
-}
-```
-
-#### inline_test
-```hb
-Point := struct {x: int, y: int}
-Buffer := struct {}
-Transform := Point
-ColorBGRA := Point
-
-line := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA, thickness: int): void {
-	if true {
-		if p0.x > p1.x {
-			@inline(line_low, buffer, p1, p0, color)
-		} else {
-			@inline(line_low, buffer, p0, p1, color)
-		}
-	} else {
-		if p0.y > p1.y {
-			// blah, test leading new line on directives
-
-			@inline(line_high, buffer, p1, p0, color)
-		} else {
-			@inline(line_high, buffer, p0, p1, color)
-		}
-	}
-	return
-}
-
-line_low := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA): void {
-	return
-}
-
-line_high := fn(buffer: Buffer, p0: Point, p1: Point, color: ColorBGRA): void {
-	return
-}
-
-screenidx := @use("screen.hb").screenidx
-
-rect_line := fn(buffer: Buffer, pos: Point, tr: Transform, color: ColorBGRA, thickness: int): void {
-	t := 0
-	y := 0
-	x := 0
-	loop if t == thickness break else {
-		y = pos.y
-		x = pos.x
-		loop if y == pos.y + tr.x break else {
-			a := 1 + @inline(screenidx, 10)
-			a = 1 + @inline(screenidx, 2)
-			y += 1
-		}
-		t += 1
-	}
-	return
-}
-
-random := @use("random.hb")
-
-example := fn(): void {
-	loop {
-		random_x := @inline(random.integer, 0, 1024)
-		random_y := random.integer(0, 768)
-		a := @inline(screenidx, random_x)
-		break
-	}
-	return
-}
-
-main := fn(): int {
-	line(.(), .(0, 0), .(0, 0), .(0, 0), 10)
-	rect_line(.(), .(0, 0), .(0, 0), .(0, 0), 10)
-	example()
-	return 0
-}
-
-// in module: screen.hb
-
-screenidx := fn(orange: int): int {
-	return orange
-}
-
-// in module: random.hb
-
-integer := fn(min: int, max: int): int {
-	rng := @as(int, @eca(3, 4))
-
-	if min != 0 | max != 0 {
-		return rng % (max - min + 1) + min
-	}
-	return rng
-}
-```
-
-#### some_generic_code
-```hb
-some_func := fn($Elem: type): void {
-	return
-}
-
-main := fn(): void {
-	some_func(u8)
-	return
-}
-```
-
-#### integer_inference_issues
-```hb
-.{integer_range} := @use("random.hb")
-main := fn(): void {
-	a := integer_range(0, 1000)
-	return
-}
-
-// in module: random.hb
-integer_range := fn(min: uint, max: int): uint {
-	return @eca(3, 4) % (@bitcast(max) - min + 1) + min
-}
-```
-
-#### exhaustive_loop_testing
-```hb
-main := fn(): int {
-	if multiple_breaks(0) != 3 {
-		return 1
-	}
-
-	if multiple_breaks(4) != 10 {
-		return 2
-	}
-
-	if state_change_in_break(0) != 0 {
-		return 3
-	}
-
-	if state_change_in_break(4) != 10 {
-		return 4
-	}
-
-	if continue_and_state_change(10) != 10 {
-		return 5
-	}
-
-	if continue_and_state_change(3) != 0 {
-		return 6
-	}
-
-	return 0
-}
-
-multiple_breaks := fn(arg: int): int {
-	loop if arg < 10 {
-		arg += 1
-		if arg == 3 break
-	} else break
-	return arg
-}
-
-state_change_in_break := fn(arg: int): int {
-	loop if arg < 10 {
-		if arg == 3 {
-			arg = 0
-			break
-		}
-		arg += 1
-	} else break
-	return arg
-}
-
-continue_and_state_change := fn(arg: int): int {
-	loop if arg < 10 {
-		if arg == 2 {
-			arg = 4
-			continue
-		}
-		if arg == 3 {
-			arg = 0
-			break
-		}
-		arg += 1
-	} else break
-	return arg
-}
-```
-
-#### writing_into_string
-```hb
-outl := fn(): void {
-	msg := "whahaha\0"
-	@as(u8, 0)
-	return
-}
-
-inl := fn(): void {
-	msg := "luhahah\0"
-	return
-}
-
-main := fn(): void {
-	outl()
-	inl()
-	return
-}
-```
-
-#### request_page
-```hb
-request_page := fn(page_count: u8): ^u8 {
-	msg := "\{00}\{01}xxxxxxxx\0"
-	msg_page_count := msg + 1;
-	*msg_page_count = page_count
-	return @eca(3, 2, msg, 12)
-}
-
-create_back_buffer := fn(total_pages: int): ^u32 {
-	if total_pages <= 0xFF {
-		return @bitcast(request_page(total_pages))
-	}
-	ptr := request_page(255)
-	remaining := total_pages - 0xFF
-	loop if remaining <= 0 break else {
-		if remaining < 0xFF {
-			request_page(remaining)
-		} else {
-			request_page(0xFF)
-		}
-		remaining -= 0xFF
-	}
-	return @bitcast(ptr)
-}
-
-main := fn(): void {
-	create_back_buffer(400)
-	return
-}
-```
-
-#### tests_ptr_to_ptr_copy
-```hb
-main := fn(): int {
-	back_buffer := @as([u8; 1024 * 10], idk)
-
-	n := 0
-	loop if n >= 1024 break else {
-		back_buffer[n] = 64
-		n += 1
-	}
-	n = 1
-	loop if n >= 10 break else {
-		*(@as(^[u8; 1024], @bitcast(&back_buffer)) + n) = *@as(^[u8; 1024], @bitcast(&back_buffer))
-		n += 1
-	}
-	return back_buffer[1024 * 2]
-}
-```

hblang/command-help.txt

@@ -1,4 +0,0 @@
---fmt - format all source files
---fmt-current - format mentioned file
-	--fmt-stdout - dont write the formatted file but print it
---threads <1...> - number of threads compiler can use [default: 1]

hblang/src/main.rs

@@ -1,28 +0,0 @@
-use std::num::NonZeroUsize;
-
-fn main() -> std::io::Result<()> {
-    let args = std::env::args().collect::<Vec<_>>();
-    let args = args.iter().map(String::as_str).collect::<Vec<_>>();
-
-    if args.contains(&"--help") || args.contains(&"-h") {
-        println!("Usage: hbc [OPTIONS...] <FILE>");
-        println!(include_str!("../command-help.txt"));
-        return Err(std::io::ErrorKind::Other.into());
-    }
-
-    hblang::run_compiler(
-        args.get(1).copied().unwrap_or("main.hb"),
-        hblang::Options {
-            fmt: args.contains(&"--fmt"),
-            fmt_current: args.contains(&"--fmt-current"),
-            dump_asm: args.contains(&"--dump-asm"),
-            extra_threads: args
-                .iter()
-                .position(|&a| a == "--threads")
-                .map(|i| args[i + 1].parse::<NonZeroUsize>().expect("--threads expects integer"))
-                .map_or(1, NonZeroUsize::get)
-                - 1,
-        },
-        &mut std::io::stdout(),
-    )
-}

hblang/tests/codegen_tests_arithmetic.txt

@@ -1,28 +0,0 @@
-main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    LI64 r32, 10d
-    LI64 r33, 20d
-    LI64 r34, 2d
-    DIRS64 r33, r0, r33, r34
-    SUB64 r32, r32, r33
-    LI64 r33, 4d
-    LI64 r34, 2d
-    ADDI64 r34, r34, 2d
-    MUL64 r33, r33, r34
-    ADD64 r32, r32, r33
-    LI64 r33, 4d
-    MULI64 r33, r33, 4d
-    SUB64 r32, r32, r33
-    LI64 r33, 1d
-    SLUI64 r33, r33, 0b
-    ADD64 r32, r32, r33
-    LI64 r33, 1d
-    NEG r33, r33
-    ADD64 r1, r32, r33
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 205
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_arrays.txt

@@ -1,68 +0,0 @@
-main:
-    ADDI64 r254, r254, -68d
-    ST r31, r254, 28a, 40h
-    LI64 r32, 511d
-    LI64 r33, 0d
-    ST r33, r254, 24a, 1h
-    LI64 r33, 0d
-    ST r33, r254, 25a, 1h
-    CP r33, r32
-    ANDI r33, r33, 255d
-    ST r33, r254, 26a, 1h
-    SRUI16 r32, r32, 8b
-    ANDI r32, r32, 255d
-    ST r32, r254, 27a, 1h
-    CP r32, r0
-    LD r32, r254, 24a, 4h
-    ST r32, r254, 0a, 4h
-    ADDI64 r32, r254, 0d
-    LI64 r33, 1d
-    ST r33, r254, 4a, 8h
-    LI64 r33, 2d
-    ST r33, r254, 12a, 8h
-    LI64 r33, 4d
-    ST r33, r254, 20a, 8h
-    ADDI64 r33, r254, 4d
-    CP r2, r33
-    JAL r31, r0, :pass
-    CP r33, r1
-    ADDI64 r34, r254, 0d
-    LI64 r35, 3d
-    ADD64 r34, r34, r35
-    CP r35, r0
-    LD r35, r34, 0a, 1h
-    SXT8 r35, r35
-    ADD64 r1, r33, r35
-    LD r31, r254, 28a, 40h
-    ADDI64 r254, r254, 68d
-    JALA r0, r31, 0a
-pass:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    CP r32, r2
-    CP r33, r32
-    LI64 r34, 0d
-    MULI64 r34, r34, 8d
-    ADD64 r33, r33, r34
-    LD r34, r33, 0a, 8h
-    CP r33, r32
-    LI64 r35, 1d
-    MULI64 r35, r35, 8d
-    ADD64 r33, r33, r35
-    LD r35, r33, 0a, 8h
-    ADD64 r34, r34, r35
-    CP r33, r32
-    LI64 r35, 1d
-    MULI64 r35, r35, 8d
-    ADD64 r32, r32, r35
-    LD r35, r32, 0a, 8h
-    MULI64 r35, r35, 8d
-    ADD64 r33, r33, r35
-    LD r35, r33, 0a, 8h
-    ADD64 r1, r34, r35
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-code size: 580
-ret: 8
-status: Ok(())

hblang/tests/codegen_tests_c_strings.txt

@@ -1,36 +0,0 @@
-main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    LRA r32, r0, :"abඞ\n\r\t56789\0"
-    CP r2, r32
-    JAL r31, r0, :str_len
-    CP r32, r1
-    LRA r33, r0, :"fff\0"
-    CP r2, r33
-    JAL r31, r0, :str_len
-    CP r33, r1
-    ADD64 r1, r33, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-str_len:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 0a, 48h
-    CP r32, r2
-    LI64 r33, 0d
- 2: CP r34, r32
-    CP r35, r0
-    LD r35, r34, 0a, 1h
-    LI64 r36, 0d
-    JNE r35, r36, :0
-    JMP :1
- 0: ADDI64 r33, r33, 1d
-    ADDI64 r32, r32, 1d
-    JMP :2
- 1: CP r1, r33
-    LD r31, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-code size: 270
-ret: 16
-status: Ok(())

hblang/tests/codegen_tests_comments.txt

@@ -1,17 +0,0 @@
-foo:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    JAL r31, r0, :foo
-    LI64 r1, 0d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 143
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_comptime_function_from_another_file.txt

@@ -1,11 +0,0 @@
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LRA r32, r0, :a
-    LD r1, r32, 0a, 8h
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-code size: 95
-ret: 50
-status: Ok(())

hblang/tests/codegen_tests_comptime_min_reg_leak.txt

@@ -1,11 +0,0 @@
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LRA r32, r0, :a
-    LD r1, r32, 0a, 8h
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-code size: 218
-ret: 50
-status: Ok(())

hblang/tests/codegen_tests_different_types.txt

@@ -1,57 +0,0 @@
-main:
-    ADDI64 r254, r254, -44d
-    ST r31, r254, 12a, 32h
-    LI64 r32, 255d
-    ST r32, r254, 0a, 1h
-    LI64 r32, 0d
-    ST r32, r254, 1a, 1h
-    LI64 r32, 0d
-    ST r32, r254, 2a, 1h
-    LI64 r32, 255d
-    ST r32, r254, 3a, 1h
-    LI64 r32, 0d
-    ST r32, r254, 4a, 4h
-    LI64 r32, 2d
-    ST r32, r254, 8a, 4h
-    LI64 r32, 1d
-    ADDI64 r33, r254, 4d
-    CP r34, r32
-    MULI64 r34, r34, 4d
-    ADD64 r33, r33, r34
-    CP r32, r0
-    LD r32, r33, 0a, 4h
-    LI64 r34, 2d
-    JEQ r32, r34, :0
-    LI64 r1, 0d
-    JMP :1
- 0: ADDI64 r34, r254, 8d
-    ADDI64 r34, r34, -4d
-    CP r32, r0
-    LD r32, r34, 0a, 4h
-    LI64 r33, 0d
-    JEQ r32, r33, :2
-    LI64 r1, 64d
-    JMP :1
- 2: CP r33, r0
-    LD r33, r254, 4a, 4h
-    CP r32, r0
-    LD r32, r254, 8a, 4h
-    ADD32 r33, r33, r32
-    CP r32, r0
-    LD r32, r254, 0a, 1h
-    ADD32 r33, r33, r32
-    CP r32, r0
-    LD r32, r254, 1a, 1h
-    ADD32 r33, r33, r32
-    CP r32, r0
-    LD r32, r254, 2a, 1h
-    ADD32 r33, r33, r32
-    CP r32, r0
-    LD r32, r254, 3a, 1h
-    ADD32 r1, r33, r32
- 1: LD r31, r254, 12a, 32h
-    ADDI64 r254, r254, 44d
-    JALA r0, r31, 0a
-code size: 474
-ret: 512
-status: Ok(())

hblang/tests/codegen_tests_directives.txt

@@ -1,27 +0,0 @@
-main:
-    ADDI64 r254, r254, -80d
-    ST r31, r254, 16a, 64h
-    LI64 r32, 10d
-    LI64 r33, 30d
-    LI64 r34, 40d
-    LI64 r35, 16d
-    LI64 r36, 8d
-    LI64 r37, 10d
-    LI64 r2, 1d
-    LI64 r38, 10d
-    ST r38, r254, 0a, 8h
-    LI64 r38, 20d
-    ST r38, r254, 8a, 8h
-    LD r3, r254, 0a, 16h
-    LI64 r5, 5d
-    LI64 r6, 6d
-    ECA 
-    CP r38, r1
-    LI64 r1, 0d
-    LD r31, r254, 16a, 64h
-    ADDI64 r254, r254, 80d
-    JALA r0, r31, 0a
-ev: Ecall
-code size: 230
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_fb_driver.txt

@@ -1,74 +0,0 @@
-main:
-    ADDI64 r254, r254, -80d
-    ST r31, r254, 0a, 80h
-    JAL r31, r0, :check_platform
-    CP r32, r1
-    LI64 r33, 100d
-    LI64 r34, 30d
-    LI64 r35, 0d
-    LI64 r36, 0d
- 4: CP r37, r35
-    CP r38, r34
-    ADDI64 r38, r38, 1d
-    CMPS r37, r37, r38
-    CMPUI r37, r37, 1d
-    JEQ r37, r0, :0
-    CP r2, r35
-    CP r3, r36
-    CP r4, r33
-    JAL r31, r0, :set_pixel
-    CP r37, r1
-    CP r38, r35
-    ADDI64 r38, r38, 1d
-    CP r35, r38
-    JMP :1
- 0: CP r2, r35
-    CP r3, r36
-    CP r4, r33
-    JAL r31, r0, :set_pixel
-    CP r38, r1
-    LI64 r35, 0d
-    CP r39, r36
-    ADDI64 r39, r39, 1d
-    CP r36, r39
- 1: CP r39, r36
-    CP r40, r33
-    CMPS r39, r39, r40
-    CMPUI r39, r39, 0d
-    NOT r39, r39
-    JEQ r39, r0, :2
-    JMP :3
- 2: JMP :4
- 3: LI64 r1, 0d
-    LD r31, r254, 0a, 80h
-    ADDI64 r254, r254, 80d
-    JALA r0, r31, 0a
-set_pixel:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    CP r33, r3
-    CP r34, r4
-    MUL64 r33, r33, r34
-    ADD64 r33, r33, r32
-    LI64 r1, 0d
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-check_platform:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    JAL r31, r0, :x86_fb_ptr
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-x86_fb_ptr:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r1, 100d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 511
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_functions.txt

@@ -1,32 +0,0 @@
-add_one:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    CP r32, r2
-    ADDI64 r1, r32, 1d
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-add_two:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    CP r32, r2
-    ADDI64 r1, r32, 2d
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    LI64 r2, 10d
-    JAL r31, r0, :add_one
-    CP r32, r1
-    LI64 r2, 20d
-    JAL r31, r0, :add_two
-    CP r33, r1
-    ADD64 r1, r32, r33
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-code size: 257
-ret: 33
-status: Ok(())

hblang/tests/codegen_tests_generic_functions.txt

@@ -1,38 +0,0 @@
-add:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r2
-    CP r33, r3
-    ADD64 r1, r32, r33
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-add:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r2
-    CP r33, r3
-    ADD32 r1, r32, r33
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    LI64 r2, 2d
-    LI64 r3, 2d
-    JAL r31, r0, :add
-    CP r32, r1
-    LI64 r2, 1d
-    LI64 r3, 3d
-    JAL r31, r0, :add
-    CP r33, r1
-    CP r34, r32
-    SXT32 r34, r34
-    SUB64 r1, r34, r33
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 275
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_generic_types.txt

@@ -1,142 +0,0 @@
-deinit:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r2
-    LD r2, r32, 0a, 8h
-    LD r33, r32, 16a, 8h
-    MULI64 r33, r33, 8d
-    CP r3, r33
-    LI64 r4, 8d
-    JAL r31, r0, :free
-    CP r1, r32
-    JAL r31, r0, :new
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-free:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    CP r32, r2
-    CP r33, r3
-    CP r34, r4
-    LRA r35, r0, :FREE_SYS_CALL
-    LD r2, r35, 0a, 8h
-    CP r3, r32
-    CP r4, r33
-    CP r5, r34
-    ECA 
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 24a, 24h
-    ADDI64 r1, r254, 0d
-    JAL r31, r0, :new
-    ADDI64 r32, r254, 0d
-    CP r2, r32
-    LI64 r3, 69d
-    JAL r31, r0, :push
-    CP r32, r1
-    LD r32, r254, 0a, 8h
-    LD r33, r32, 0a, 8h
-    ADDI64 r32, r254, 0d
-    CP r2, r32
-    JAL r31, r0, :deinit
-    CP r1, r33
-    LD r31, r254, 24a, 24h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-malloc:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    CP r33, r3
-    LRA r34, r0, :MALLOC_SYS_CALL
-    LD r2, r34, 0a, 8h
-    CP r3, r32
-    CP r4, r33
-    ECA 
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-new:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r1
-    LI64 r33, 0d
-    ST r33, r32, 0a, 8h
-    LI64 r33, 0d
-    ST r33, r32, 8a, 8h
-    LI64 r33, 0d
-    ST r33, r32, 16a, 8h
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-push:
-    ADDI64 r254, r254, -72d
-    ST r31, r254, 0a, 72h
-    CP r32, r2
-    CP r33, r3
-    LD r34, r32, 8a, 8h
-    LD r35, r32, 16a, 8h
-    JNE r34, r35, :0
-    LD r35, r32, 16a, 8h
-    LI64 r34, 0d
-    JNE r35, r34, :1
-    LI64 r34, 1d
-    ST r34, r32, 16a, 8h
-    JMP :2
- 1: LD r34, r32, 16a, 8h
-    MULI64 r34, r34, 2d
-    ST r34, r32, 16a, 8h
- 2: LD r34, r32, 16a, 8h
-    MULI64 r34, r34, 8d
-    CP r2, r34
-    LI64 r3, 8d
-    JAL r31, r0, :malloc
-    CP r34, r1
-    LI64 r35, 0d
-    JNE r34, r35, :3
-    LI64 r1, 0d
-    JMP :4
- 3: LD r35, r32, 0a, 8h
-    CP r36, r34
-    LD r37, r32, 0a, 8h
-    LD r38, r32, 8a, 8h
-    MULI64 r38, r38, 8d
-    ADD64 r37, r37, r38
- 7: JNE r35, r37, :5
-    JMP :6
- 5: CP r38, r36
-    CP r39, r35
-    BMC r39, r38, 8h
-    ADDI64 r35, r35, 8d
-    ADDI64 r36, r36, 8d
-    JMP :7
- 6: LD r38, r32, 8a, 8h
-    LI64 r39, 0d
-    JEQ r38, r39, :8
-    LD r2, r32, 0a, 8h
-    LD r39, r32, 8a, 8h
-    MULI64 r39, r39, 8d
-    CP r3, r39
-    LI64 r4, 8d
-    JAL r31, r0, :free
- 8: ST r34, r32, 0a, 8h
- 0: LD r34, r32, 0a, 8h
-    LD r39, r32, 8a, 8h
-    MULI64 r39, r39, 8d
-    ADD64 r34, r34, r39
-    CP r39, r34
-    ST r33, r39, 0a, 8h
-    LD r39, r32, 8a, 8h
-    ADDI64 r39, r39, 1d
-    ST r39, r32, 8a, 8h
-    CP r1, r34
- 4: LD r31, r254, 0a, 72h
-    ADDI64 r254, r254, 72d
-    JALA r0, r31, 0a
-code size: 1201
-ret: 69
-status: Ok(())

hblang/tests/codegen_tests_global_variables.txt

@@ -1,16 +0,0 @@
-main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    LRA r32, r0, :complex_global_var
-    LRA r33, r0, :complex_global_var
-    LD r34, r33, 0a, 8h
-    ADDI64 r34, r34, 5d
-    ST r34, r32, 0a, 8h
-    LRA r32, r0, :complex_global_var
-    LD r1, r32, 0a, 8h
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 146
-ret: 55
-status: Ok(())

hblang/tests/codegen_tests_hex_octal_binary_literals.txt

@@ -1,28 +0,0 @@
-main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    LI64 r32, 255d
-    LI64 r33, 255d
-    LI64 r34, 255d
-    LI64 r35, 255d
-    CMPS r32, r32, r33
-    CMPUI r32, r32, 0d
-    NOT r32, r32
-    CMPS r34, r34, r33
-    CMPUI r34, r34, 0d
-    NOT r34, r34
-    AND r32, r32, r34
-    CMPS r35, r35, r33
-    CMPUI r35, r35, 0d
-    NOT r35, r35
-    AND r32, r32, r35
-    JEQ r32, r0, :0
-    LI64 r1, 0d
-    JMP :1
- 0: LI64 r1, 1d
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-code size: 199
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_idk.txt

@@ -1,25 +0,0 @@
-main:
-    ADDI64 r254, r254, -160d
-    ST r31, r254, 128a, 32h
-    LI64 r32, 0d
- 2: LI64 r33, 128d
-    JLTS r32, r33, :0
-    JMP :1
- 0: ADDI64 r33, r254, 0d
-    CP r34, r32
-    ADD64 r33, r33, r34
-    LI64 r34, 69d
-    ST r34, r33, 0a, 1h
-    ADDI64 r32, r32, 1d
-    JMP :2
- 1: ADDI64 r33, r254, 0d
-    LI64 r34, 42d
-    ADD64 r33, r33, r34
-    CP r1, r0
-    LD r1, r33, 0a, 1h
-    LD r31, r254, 128a, 32h
-    ADDI64 r254, r254, 160d
-    JALA r0, r31, 0a
-code size: 195
-ret: 69
-status: Ok(())

hblang/tests/codegen_tests_if_statements.txt

@@ -1,32 +0,0 @@
-fib:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r2
-    LI64 r33, 2d
-    JGTS r32, r33, :0
-    LI64 r1, 1d
-    JMP :1
- 0: CP r33, r32
-    ADDI64 r33, r33, -1d
-    CP r2, r33
-    JAL r31, r0, :fib
-    CP r33, r1
-    ADDI64 r32, r32, -2d
-    CP r2, r32
-    JAL r31, r0, :fib
-    CP r32, r1
-    ADD64 r1, r33, r32
- 1: LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r2, 10d
-    JAL r31, r0, :fib
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 231
-ret: 55
-status: Ok(())

hblang/tests/codegen_tests_inline.txt

@@ -1,13 +0,0 @@
-main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    LI64 r33, 1d
-    ADDI64 r33, r33, 2d
-    ADDI64 r32, r33, 3d
-    ADDI64 r1, r32, -6d
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-code size: 110
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_inline_test.txt

@@ -1,161 +0,0 @@
-example:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 0a, 48h
-    LI64 r2, 3d
-    LI64 r3, 4d
-    ECA 
-    CP r33, r1
-    LI64 r34, 0d
-    LI64 r35, 0d
-    CMPS r34, r34, r35
-    CMPUI r34, r34, 0d
-    LI64 r35, 1024d
-    LI64 r36, 0d
-    CMPS r35, r35, r36
-    CMPUI r35, r35, 0d
-    OR r34, r34, r35
-    JEQ r34, r0, :0
-    CP r34, r33
-    LI64 r35, 1024d
-    ADDI64 r35, r35, 0d
-    ADDI64 r35, r35, 1d
-    DIRS64 r0, r34, r34, r35
-    ADDI64 r32, r34, 0d
-    JMP :1
- 0: CP r32, r33
- 1: LI64 r2, 0d
-    LI64 r3, 768d
-    JAL r31, r0, :integer
-    CP r33, r1
-    CP r34, r32
-    JMP :2
- 2: LD r31, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-integer:
-    ADDI64 r254, r254, -56d
-    ST r31, r254, 0a, 56h
-    CP r32, r2
-    CP r33, r3
-    LI64 r2, 3d
-    LI64 r3, 4d
-    ECA 
-    CP r34, r1
-    CP r35, r32
-    LI64 r36, 0d
-    CMPS r35, r35, r36
-    CMPUI r35, r35, 0d
-    CP r36, r33
-    LI64 r37, 0d
-    CMPS r36, r36, r37
-    CMPUI r36, r36, 0d
-    OR r35, r35, r36
-    JEQ r35, r0, :0
-    CP r35, r34
-    SUB64 r33, r33, r32
-    ADDI64 r33, r33, 1d
-    DIRS64 r0, r35, r35, r33
-    ADD64 r1, r35, r32
-    JMP :1
- 0: CP r1, r34
- 1: LD r31, r254, 0a, 56h
-    ADDI64 r254, r254, 56d
-    JALA r0, r31, 0a
-line:
-    ADDI64 r254, r254, -80d
-    ST r31, r254, 48a, 32h
-    ST r2, r254, 16a, 16h
-    ST r4, r254, 0a, 16h
-    ST r6, r254, 32a, 16h
-    CP r32, r8
-    LI64 r33, 1d
-    JEQ r33, r0, :0
-    LD r33, r254, 16a, 8h
-    LD r34, r254, 0a, 8h
-    JGTS r33, r34, :1
-    JMP :1
- 1: JMP :2
- 0: LD r34, r254, 24a, 8h
-    LD r33, r254, 8a, 8h
-    JGTS r34, r33, :2
-    JMP :2
- 2: LD r31, r254, 48a, 32h
-    ADDI64 r254, r254, 80d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -64d
-    ST r31, r254, 48a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 0a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 8a, 8h
-    LD r2, r254, 0a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 16a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 24a, 8h
-    LD r4, r254, 16a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 32a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 40a, 8h
-    LD r6, r254, 32a, 16h
-    LI64 r8, 10d
-    JAL r31, r0, :line
-    LI64 r32, 0d
-    ST r32, r254, 0a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 8a, 8h
-    LD r2, r254, 0a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 16a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 24a, 8h
-    LD r4, r254, 16a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 32a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 40a, 8h
-    LD r6, r254, 32a, 16h
-    LI64 r8, 10d
-    JAL r31, r0, :rect_line
-    JAL r31, r0, :example
-    LI64 r1, 0d
-    LD r31, r254, 48a, 16h
-    ADDI64 r254, r254, 64d
-    JALA r0, r31, 0a
-rect_line:
-    ADDI64 r254, r254, -112d
-    ST r31, r254, 48a, 64h
-    ST r2, r254, 0a, 16h
-    ST r4, r254, 16a, 16h
-    ST r6, r254, 32a, 16h
-    CP r32, r8
-    LI64 r33, 0d
-    LI64 r34, 0d
-    LI64 r35, 0d
- 5: JNE r33, r32, :0
-    JMP :1
- 0: LD r34, r254, 8a, 8h
-    LD r35, r254, 0a, 8h
- 4: LD r36, r254, 8a, 8h
-    LD r37, r254, 16a, 8h
-    ADD64 r36, r36, r37
-    JNE r34, r36, :2
-    JMP :3
- 2: LI64 r36, 1d
-    LI64 r37, 10d
-    ADD64 r36, r36, r37
-    LI64 r37, 1d
-    LI64 r38, 2d
-    ADD64 r36, r37, r38
-    ADDI64 r34, r34, 1d
-    JMP :4
- 3: ADDI64 r33, r33, 1d
-    JMP :5
- 1: LD r31, r254, 48a, 64h
-    ADDI64 r254, r254, 112d
-    JALA r0, r31, 0a
-code size: 1400
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_loops.txt

@@ -1,30 +0,0 @@
-fib:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    CP r32, r2
-    LI64 r33, 0d
-    LI64 r34, 1d
- 2: LI64 r35, 0d
-    JNE r32, r35, :0
-    JMP :1
- 0: CP r35, r33
-    ADD64 r35, r35, r34
-    CP r33, r34
-    CP r34, r35
-    ADDI64 r32, r32, -1d
-    JMP :2
- 1: CP r1, r33
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r2, 10d
-    JAL r31, r0, :fib
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 218
-ret: 55
-status: Ok(())

hblang/tests/codegen_tests_pointers.txt

@@ -1,35 +0,0 @@
-drop:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    CP r32, r2
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 8a, 32h
-    LI64 r32, 1d
-    ST r32, r254, 0a, 8h
-    ADDI64 r32, r254, 0d
-    CP r2, r32
-    JAL r31, r0, :modify
-    LD r2, r254, 0a, 8h
-    JAL r31, r0, :drop
-    LI64 r33, 0d
-    LD r34, r32, 0a, 8h
-    ADDI64 r1, r34, -2d
-    LD r31, r254, 8a, 32h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-modify:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r32, r2
-    LI64 r33, 2d
-    ST r33, r32, 0a, 8h
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-code size: 312
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_request_page.txt

@@ -1,59 +0,0 @@
-create_back_buffer:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    LI64 r33, 255d
-    JGTS r32, r33, :0
-    CP r2, r32
-    JAL r31, r0, :request_page
-    JMP :1
- 0: LI64 r2, 255d
-    JAL r31, r0, :request_page
-    CP r33, r1
-    ADDI64 r32, r32, -255d
- 6: LI64 r34, 0d
-    JGTS r32, r34, :2
-    JMP :3
- 2: LI64 r34, 255d
-    JLTS r32, r34, :4
-    LI64 r2, 255d
-    JAL r31, r0, :request_page
-    CP r34, r1
-    JMP :5
- 4: CP r2, r32
-    JAL r31, r0, :request_page
-    CP r34, r1
- 5: ADDI64 r32, r32, -255d
-    JMP :6
- 3: CP r1, r33
- 1: LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LI64 r2, 400d
-    JAL r31, r0, :create_back_buffer
-    CP r32, r1
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-request_page:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    LRA r33, r0, :"\0\u{1}xxxxxxxx\0"
-    CP r34, r33
-    ADDI64 r34, r34, 1d
-    ST r32, r34, 0a, 1h
-    LI64 r2, 3d
-    LI64 r3, 2d
-    CP r4, r33
-    LI64 r5, 12d
-    ECA 
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 443
-ret: 42
-status: Ok(())

hblang/tests/codegen_tests_some_generic_code.txt

@@ -1,16 +0,0 @@
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    JAL r31, r0, :some_func
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-some_func:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 133
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_sort_something_viredly.txt

@@ -1,11 +0,0 @@
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LI64 r32, 1610612737d
-    LI64 r1, 0d
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-code size: 87
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_struct_operators.txt

@@ -1,75 +0,0 @@
-main:
-    ADDI64 r254, r254, -136d
-    ST r31, r254, 112a, 24h
-    LI64 r32, 1d
-    ST r32, r254, 32a, 8h
-    LI64 r32, 2d
-    ST r32, r254, 40a, 8h
-    LI64 r32, 3d
-    ST r32, r254, 16a, 8h
-    LI64 r32, 4d
-    ST r32, r254, 24a, 8h
-    LD r32, r254, 32a, 8h
-    LD r33, r254, 16a, 8h
-    ADD64 r32, r32, r33
-    ST r32, r254, 48a, 8h
-    LD r32, r254, 40a, 8h
-    LD r33, r254, 24a, 8h
-    ADD64 r32, r32, r33
-    ST r32, r254, 56a, 8h
-    LD r32, r254, 16a, 8h
-    LD r33, r254, 32a, 8h
-    SUB64 r32, r32, r33
-    ST r32, r254, 64a, 8h
-    LD r32, r254, 24a, 8h
-    LD r33, r254, 40a, 8h
-    SUB64 r32, r32, r33
-    ST r32, r254, 72a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 0a, 8h
-    LI64 r32, 0d
-    ST r32, r254, 8a, 8h
-    LD r32, r254, 0a, 8h
-    LD r33, r254, 16a, 8h
-    SUB64 r32, r32, r33
-    ST r32, r254, 80a, 8h
-    LD r32, r254, 8a, 8h
-    LD r33, r254, 24a, 8h
-    SUB64 r32, r32, r33
-    ST r32, r254, 88a, 8h
-    ADDI64 r32, r254, 32d
-    ADDI64 r33, r254, 96d
-    BMC r32, r33, 16h
-    LD r33, r254, 80a, 8h
-    LD r32, r254, 48a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 80a, 8h
-    LD r33, r254, 88a, 8h
-    LD r32, r254, 56a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 88a, 8h
-    LD r33, r254, 96a, 8h
-    LD r32, r254, 64a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 96a, 8h
-    LD r33, r254, 104a, 8h
-    LD r32, r254, 72a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 104a, 8h
-    LD r33, r254, 80a, 8h
-    LD r32, r254, 96a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 96a, 8h
-    LD r33, r254, 88a, 8h
-    LD r32, r254, 104a, 8h
-    ADD64 r33, r33, r32
-    ST r33, r254, 104a, 8h
-    LD r33, r254, 96a, 8h
-    LD r32, r254, 104a, 8h
-    ADD64 r1, r33, r32
-    LD r31, r254, 112a, 24h
-    ADDI64 r254, r254, 136d
-    JALA r0, r31, 0a
-code size: 778
-ret: 10
-status: Ok(())

hblang/tests/codegen_tests_struct_patterns.txt

@@ -1,65 +0,0 @@
-fib:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    LI64 r33, 2d
-    JLTS r32, r33, :0
-    CP r33, r32
-    ADDI64 r33, r33, -1d
-    CP r2, r33
-    JAL r31, r0, :fib
-    CP r33, r1
-    CP r34, r32
-    ADDI64 r34, r34, -2d
-    CP r2, r34
-    JAL r31, r0, :fib
-    CP r34, r1
-    ADD64 r1, r33, r34
-    JMP :1
- 0: CP r1, r32
- 1: LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-fib_iter:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    CP r32, r2
-    LI64 r33, 0d
-    LI64 r34, 1d
- 2: LI64 r35, 0d
-    JNE r32, r35, :0
-    JMP :1
- 0: CP r35, r33
-    ADD64 r35, r35, r34
-    CP r33, r34
-    CP r34, r35
-    ADDI64 r32, r32, -1d
-    JMP :2
- 1: CP r1, r33
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -26d
-    ST r31, r254, 2a, 24h
-    LI64 r32, 10d
-    ST r32, r254, 0a, 1h
-    LI64 r32, 10d
-    ST r32, r254, 1a, 1h
-    CP r32, r0
-    LD r32, r254, 0a, 1h
-    CP r33, r0
-    LD r33, r254, 1a, 1h
-    CP r2, r32
-    JAL r31, r0, :fib
-    CP r32, r1
-    CP r2, r33
-    JAL r31, r0, :fib_iter
-    CP r33, r1
-    SUB64 r1, r32, r33
-    LD r31, r254, 2a, 24h
-    ADDI64 r254, r254, 26d
-    JALA r0, r31, 0a
-code size: 452
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_struct_return_from_module_function.txt

@@ -1,39 +0,0 @@
-foo:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 16a, 16h
-    LI64 r32, 3d
-    ST r32, r254, 0a, 8h
-    LI64 r32, 2d
-    ST r32, r254, 8a, 4h
-    LI64 r32, 2d
-    ST r32, r254, 12a, 4h
-    LD r1, r254, 0a, 16h
-    LD r31, r254, 16a, 16h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 16a, 24h
-    LI64 r32, 7d
-    JAL r31, r0, :foo
-    ST r1, r254, 0a, 16h
-    LD r33, r254, 0a, 8h
-    SUB64 r32, r32, r33
-    JAL r31, r0, :foo
-    ST r1, r254, 0a, 16h
-    CP r33, r0
-    LD r33, r254, 8a, 4h
-    SXT32 r33, r33
-    SUB64 r32, r32, r33
-    JAL r31, r0, :foo
-    ST r1, r254, 0a, 16h
-    CP r33, r0
-    LD r33, r254, 12a, 4h
-    SXT32 r33, r33
-    SUB64 r1, r32, r33
-    LD r31, r254, 16a, 24h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-code size: 341
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_structs.txt

@@ -1,46 +0,0 @@
-main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 24a, 24h
-    LI64 r32, 4d
-    ST r32, r254, 0a, 8h
-    LI64 r32, 1d
-    ST r32, r254, 8a, 8h
-    LI64 r32, 3d
-    ST r32, r254, 16a, 8h
-    ADDI64 r2, r254, 0d
-    ADDI64 r1, r254, 0d
-    JAL r31, r0, :odher_pass
-    LD r32, r254, 16a, 8h
-    LI64 r33, 3d
-    JNE r32, r33, :0
-    ADDI64 r33, r254, 0d
-    CP r2, r33
-    JAL r31, r0, :pass
-    JMP :1
- 0: LI64 r1, 0d
- 1: LD r31, r254, 24a, 24h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-odher_pass:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    CP r33, r1
-    CP r34, r33
-    BMC r32, r34, 24h
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-pass:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
-    CP r32, r2
-    LD r33, r32, 0a, 8h
-    LD r34, r32, 8a, 8h
-    SUB64 r1, r33, r34
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 394
-ret: 3
-status: Ok(())

hblang/tests/codegen_tests_tests_ptr_to_ptr_copy.txt

@@ -1,38 +0,0 @@
-main:
-    ADDI64 r254, r254, -10272d
-    ST r31, r254, 10240a, 32h
-    LI64 r32, 0d
- 2: LI64 r33, 1024d
-    JLTS r32, r33, :0
-    JMP :1
- 0: ADDI64 r33, r254, 0d
-    CP r34, r32
-    ADD64 r33, r33, r34
-    LI64 r34, 64d
-    ST r34, r33, 0a, 1h
-    ADDI64 r32, r32, 1d
-    JMP :2
- 1: LI64 r32, 1d
- 5: LI64 r33, 10d
-    JLTS r32, r33, :3
-    JMP :4
- 3: ADDI64 r33, r254, 0d
-    CP r34, r32
-    MULI64 r34, r34, 1024d
-    ADD64 r33, r33, r34
-    ADDI64 r34, r254, 0d
-    BMC r34, r33, 1024h
-    ADDI64 r32, r32, 1d
-    JMP :5
- 4: LI64 r33, 1024d
-    MULI64 r33, r33, 2d
-    ADDI64 r34, r254, 0d
-    ADD64 r34, r34, r33
-    CP r1, r0
-    LD r1, r34, 0a, 1h
-    LD r31, r254, 10240a, 32h
-    ADDI64 r254, r254, 10272d
-    JALA r0, r31, 0a
-code size: 297
-ret: 64
-status: Ok(())

hblang/tests/codegen_tests_variables.txt

@@ -1,13 +0,0 @@
-main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    LI64 r32, 1d
-    LI64 r33, 2d
-    ADDI64 r32, r32, 1d
-    SUB64 r1, r32, r33
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-code size: 102
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_wide_ret.txt

@@ -1,45 +0,0 @@
-main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 16a, 32h
-    CP r32, r3
-    CP r33, r4
-    JAL r31, r0, :small_struct
-    CP r34, r1
-    LI64 r34, 0d
-    ST r34, r254, 8a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 9a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 10a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 11a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 12a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 13a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 14a, 1h
-    LI64 r34, 0d
-    ST r34, r254, 15a, 1h
-    LD r34, r254, 8a, 8h
-    ST r34, r254, 0a, 8h
-    ST r34, r254, 8a, 8h
-    LD r1, r254, 0a, 16h
-    LD r31, r254, 16a, 32h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-small_struct:
-    ADDI64 r254, r254, -20d
-    ST r31, r254, 4a, 16h
-    LI64 r32, 0d
-    ST r32, r254, 0a, 2h
-    LI64 r32, 0d
-    ST r32, r254, 2a, 2h
-    CP r1, r0
-    LD r1, r254, 0a, 4h
-    LD r31, r254, 4a, 16h
-    ADDI64 r254, r254, 20d
-    JALA r0, r31, 0a
-code size: 440
-ret: 0
-status: Ok(())

hblang/tests/codegen_tests_writing_into_string.txt

@@ -1,25 +0,0 @@
-inl:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LRA r32, r0, :"luhahah\0"
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    JAL r31, r0, :outl
-    JAL r31, r0, :inl
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-outl:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LRA r32, r0, :"whahaha\0"
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-code size: 229
-ret: 0
-status: Ok(())

hblang/tests/son_tests_branch_assignments.txt

@@ -1,17 +0,0 @@
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    LI64 r1, 1d
-    JNE r2, r1, :0
-    JMP :1
- 0: LI64 r32, 0d
-    JNE r2, r32, :2
-    LI64 r1, 2d
-    JMP :1
- 2: LI64 r1, 3d
- 1: LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-code size: 127
-ret: 2
-status: Ok(())

hblang/tests/son_tests_comments.txt

@@ -1,18 +0,0 @@
-main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    JAL r31, r0, :foo
-    CP r32, r1
-    LI64 r1, 0d
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-foo:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 146
-ret: 0
-status: Ok(())

hblang/tests/son_tests_const_folding_with_arg.txt

@@ -1,10 +0,0 @@
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r1, 0d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 77
-ret: 0
-status: Ok(())

hblang/tests/son_tests_exhaustive_loop_testing.txt

@@ -1,103 +0,0 @@
-main:
-    ADDI64 r254, r254, -88d
-    ST r31, r254, 0a, 88h
-    LI64 r32, 0d
-    CP r2, r32
-    JAL r31, r0, :multiple_breaks
-    CP r33, r1
-    LI64 r34, 3d
-    JEQ r33, r34, :0
-    LI64 r1, 1d
-    JMP :1
- 0: LI64 r35, 4d
-    CP r2, r35
-    JAL r31, r0, :multiple_breaks
-    CP r36, r1
-    LI64 r37, 10d
-    JEQ r36, r37, :2
-    LI64 r1, 2d
-    JMP :1
- 2: CP r2, r32
-    JAL r31, r0, :state_change_in_break
-    CP r38, r1
-    JEQ r38, r32, :3
-    CP r1, r34
-    JMP :1
- 3: CP r2, r35
-    JAL r31, r0, :state_change_in_break
-    CP r39, r1
-    JEQ r39, r37, :4
-    CP r1, r35
-    JMP :1
- 4: CP r2, r37
-    JAL r31, r0, :continue_and_state_change
-    CP r40, r1
-    JEQ r40, r37, :5
-    LI64 r1, 5d
-    JMP :1
- 5: CP r2, r34
-    JAL r31, r0, :continue_and_state_change
-    CP r41, r1
-    JEQ r41, r32, :6
-    LI64 r1, 6d
-    JMP :1
- 6: CP r1, r32
- 1: LD r31, r254, 0a, 88h
-    ADDI64 r254, r254, 88d
-    JALA r0, r31, 0a
-continue_and_state_change:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    CP r1, r2
-    LI64 r32, 3d
-    LI64 r33, 4d
-    LI64 r34, 2d
-    LI64 r35, 10d
- 6: JLTU r1, r35, :0
-    JMP :1
- 0: JNE r1, r34, :2
-    CP r1, r33
-    JMP :3
- 2: JNE r1, r32, :4
-    LI64 r1, 0d
- 1: JMP :5
- 4: ADDI64 r33, r1, 1d
-    CP r1, r33
- 3: JMP :6
- 5: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-state_change_in_break:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r1, r2
-    LI64 r32, 3d
-    LI64 r33, 10d
- 4: JLTU r1, r33, :0
-    JMP :1
- 0: JNE r1, r32, :2
-    LI64 r1, 0d
- 1: JMP :3
- 2: ADDI64 r1, r1, 1d
-    JMP :4
- 3: LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-multiple_breaks:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    CP r1, r2
-    LI64 r32, 3d
-    LI64 r33, 10d
- 4: JLTU r1, r33, :0
-    JMP :1
- 0: ADDI64 r1, r1, 1d
-    JNE r1, r32, :2
- 1: JMP :3
- 2: JMP :4
- 3: LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-code size: 704
-ret: 0
-status: Ok(())

hblang/tests/son_tests_fb_driver.txt

@@ -1,60 +0,0 @@
-main:
-    ADDI64 r254, r254, -88d
-    ST r31, r254, 0a, 88h
-    JAL r31, r0, :check_platform
-    CP r32, r1
-    LI64 r33, 0d
-    LI64 r34, 30d
-    LI64 r35, 100d
-    CP r36, r33
-    CP r37, r33
-    CP r38, r33
- 5: JLTU r37, r34, :0
-    ADDI64 r36, r36, 1d
-    CP r2, r33
-    CP r3, r36
-    CP r4, r34
-    JAL r31, r0, :set_pixel
-    CP r39, r1
-    JEQ r39, r38, :1
-    CP r1, r33
-    JMP :2
- 1: JNE r36, r35, :3
-    CP r1, r38
-    JMP :2
- 3: CP r37, r33
-    CP r40, r38
-    JMP :4
- 0: ADDI64 r40, r38, 1d
-    ADDI64 r41, r37, 1d
-    CP r37, r41
- 4: CP r38, r40
-    JMP :5
- 2: LD r31, r254, 0a, 88h
-    ADDI64 r254, r254, 88d
-    JALA r0, r31, 0a
-set_pixel:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
-    MUL64 r32, r4, r3
-    ADD64 r1, r32, r2
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
-    JALA r0, r31, 0a
-check_platform:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    JAL r31, r0, :x86_fb_ptr
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-x86_fb_ptr:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r1, 100d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 423
-ret: 3000
-status: Ok(())

hblang/tests/son_tests_functions.txt

@@ -1,30 +0,0 @@
-main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
-    LI64 r2, 10d
-    JAL r31, r0, :add_one
-    CP r32, r1
-    LI64 r2, 20d
-    JAL r31, r0, :add_two
-    CP r33, r1
-    ADD64 r1, r33, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
-add_two:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    ADDI64 r1, r2, 2d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-add_one:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    ADDI64 r1, r2, 1d
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-code size: 251
-ret: 33
-status: Ok(())

hblang/tests/son_tests_loops.txt

@@ -1,28 +0,0 @@
-main:
-    ADDI64 r254, r254, -8d
-    ST r31, r254, 0a, 8h
-    LI64 r2, 10d
-    JAL r31, r0, :fib
-    LD r31, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
-    JALA r0, r31, 0a
-fib:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
-    LI64 r32, 1d
-    LI64 r33, 0d
-    CP r1, r33
-    CP r34, r32
- 2: JNE r2, r33, :0
-    JMP :1
- 0: ADD64 r35, r34, r1
-    SUB64 r2, r2, r32
-    CP r1, r34
-    CP r34, r35
-    JMP :2
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
-code size: 198
-ret: 55
-status: Ok(())

hblang/text-prj/main.hb

@@ -1,11 +0,0 @@
-foo := 0;
-
-.{global, fib, Structa, create_window, WindowID} := @use("pkg.hb")
-
-main := fn(a: int): int {
-	g := global
-
-	win := create_window()
-
-	return fib(g + Structa.(0, 0).foo)
-}

hblang/text-prj/pkg.hb

@@ -1,19 +0,0 @@
-global := 10
-
-Structa := struct {
-	foo: int,
-	goo: int,
-}
-
-create_window := fn(): WindowID {
-    return WindowID.(1, 2)
-}
-
-WindowID := struct {
-    host_id: int,
-    window_id: int,
-}
-
-fib := fn(n: int): int {
-	return n + 1
-}

lang/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "hblang"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "hbc"
+path = "src/main.rs"
+
+[[bin]]
+name = "fuzz"
+path = "src/fuzz_main.rs"
+
+[dependencies]
+hashbrown = { version = "0.15.0", default-features = false, features = ["raw-entry", "allocator-api2"] }
+hbbytecode = { workspace = true, features = ["disasm"] }
+hbvm = { workspace = true, features = ["nightly"] }
+log = "0.4.22"
+
+[dependencies.regalloc2]
+git = "https://github.com/jakubDoka/regalloc2"
+branch = "reuse-allocations"
+default-features = false
+
+[features]
+default = ["std", "regalloc2/trace-log"]
+std = []
+no_log = ["log/max_level_off"]

lang/command-help.txt

@@ -0,0 +1,4 @@
+--fmt            - format all imported source files
+--fmt-stdout     - dont write the formatted file but print it
+--dump-asm       - output assembly instead of raw code, (the assembly is more for debugging the compiler)
+--threads <1...> - number of extra threads compiler can use [default: 0]

lang/src/fmt.rs

@@ -0,0 +1,526 @@
+use {
+    crate::{
+        lexer::{self, Lexer, TokenKind},
+        parser::{self, CommentOr, CtorField, Expr, Poser, Radix, StructField},
+    },
+    core::fmt::{self},
+};
+
+pub fn display_radix(radix: Radix, mut value: u64, buf: &mut [u8; 64]) -> &str {
+    fn conv_radix(d: u8) -> u8 {
+        match d {
+            0..=9 => d + b'0',
+            _ => d - 10 + b'A',
+        }
+    }
+
+    for (i, b) in buf.iter_mut().enumerate().rev() {
+        let d = (value % radix as u64) as u8;
+        value /= radix as u64;
+        *b = conv_radix(d);
+        if value == 0 {
+            return unsafe { core::str::from_utf8_unchecked(&buf[i..]) };
+        }
+    }
+
+    unreachable!()
+}
+
+pub fn minify(source: &mut str) -> usize {
+    fn needs_space(c: u8) -> bool {
+        matches!(c, b'a'..=b'z' | b'A'..=b'Z' | b'0'..=b'9' | 127..)
+    }
+
+    let mut writer = source.as_mut_ptr();
+    let mut reader = &source[..];
+    let mut prev_needs_whitecpace = false;
+    let mut prev_needs_newline = false;
+    loop {
+        let mut token = lexer::Lexer::new(reader).eat();
+        match token.kind {
+            TokenKind::Eof => break,
+            TokenKind::CtIdent | TokenKind::Directive => token.start -= 1,
+            _ => {}
+        }
+
+        let cpy_len = token.range().len();
+
+        let mut prefix = 0;
+        if prev_needs_whitecpace && needs_space(reader.as_bytes()[token.start as usize]) {
+            prefix = b' ';
+            debug_assert!(token.start != 0, "{reader}");
+        }
+        prev_needs_whitecpace = needs_space(reader.as_bytes()[token.end as usize - 1]);
+
+        let inbetween_new_lines =
+            reader[..token.start as usize].bytes().filter(|&b| b == b'\n').count()
+                + token.kind.precedence().is_some() as usize;
+        let extra_prefix_new_lines = if inbetween_new_lines > 1 {
+            1 + token.kind.precedence().is_none() as usize
+        } else {
+            prev_needs_newline as usize
+        };
+
+        if token.kind == TokenKind::Comment && reader.as_bytes()[token.end as usize - 1] != b'/' {
+            prev_needs_newline = true;
+            prev_needs_whitecpace = false;
+        } else {
+            prev_needs_newline = false;
+        }
+
+        let sstr = reader[token.start as usize..].as_ptr();
+        reader = &reader[token.end as usize..];
+        unsafe {
+            if extra_prefix_new_lines != 0 {
+                for _ in 0..extra_prefix_new_lines {
+                    writer.write(b'\n');
+                    writer = writer.add(1);
+                }
+            } else if prefix != 0 {
+                writer.write(prefix);
+                writer = writer.add(1);
+            }
+            writer.copy_from(sstr, cpy_len);
+            writer = writer.add(cpy_len);
+        }
+    }
+
+    unsafe { writer.sub_ptr(source.as_mut_ptr()) }
+}
+
+pub struct Formatter<'a> {
+    source: &'a str,
+    depth: usize,
+}
+
+// we exclusively use `write_str` to reduce bloat
+impl<'a> Formatter<'a> {
+    pub fn new(source: &'a str) -> Self {
+        Self { source, depth: 0 }
+    }
+
+    fn fmt_list<T: Poser, F: core::fmt::Write>(
+        &mut self,
+        f: &mut F,
+        trailing: bool,
+        end: &str,
+        sep: &str,
+        list: &[T],
+        fmt: impl Fn(&mut Self, &T, &mut F) -> fmt::Result,
+    ) -> fmt::Result {
+        self.fmt_list_low(f, trailing, end, sep, list, |s, v, f| {
+            fmt(s, v, f)?;
+            Ok(true)
+        })
+    }
+
+    fn fmt_list_low<T: Poser, F: core::fmt::Write>(
+        &mut self,
+        f: &mut F,
+        trailing: bool,
+        end: &str,
+        sep: &str,
+        list: &[T],
+        fmt: impl Fn(&mut Self, &T, &mut F) -> Result<bool, fmt::Error>,
+    ) -> fmt::Result {
+        if !trailing {
+            let mut first = true;
+            for expr in list {
+                if !core::mem::take(&mut first) {
+                    f.write_str(sep)?;
+                    f.write_str(" ")?;
+                }
+                first = !fmt(self, expr, f)?;
+            }
+            return f.write_str(end);
+        }
+
+        writeln!(f)?;
+        self.depth += 1;
+        let res = (|| {
+            for (i, stmt) in list.iter().enumerate() {
+                for _ in 0..self.depth {
+                    f.write_str("\t")?;
+                }
+                let add_sep = fmt(self, stmt, f)?;
+                if add_sep {
+                    f.write_str(sep)?;
+                }
+                if let Some(expr) = list.get(i + 1)
+                    && let Some(rest) = self.source.get(expr.posi() as usize..)
+                {
+                    if insert_needed_semicolon(rest) {
+                        f.write_str(";")?;
+                    }
+                    if preserve_newlines(&self.source[..expr.posi() as usize]) > 1 {
+                        f.write_str("\n")?;
+                    }
+                }
+                if add_sep {
+                    f.write_str("\n")?;
+                }
+            }
+            Ok(())
+        })();
+        self.depth -= 1;
+
+        for _ in 0..self.depth {
+            f.write_str("\t")?;
+        }
+        f.write_str(end)?;
+        res
+    }
+
+    fn fmt_paren<F: core::fmt::Write>(
+        &mut self,
+        expr: &Expr,
+        f: &mut F,
+        cond: impl FnOnce(&Expr) -> bool,
+    ) -> fmt::Result {
+        if cond(expr) {
+            f.write_str("(")?;
+            self.fmt(expr, f)?;
+            f.write_str(")")
+        } else {
+            self.fmt(expr, f)
+        }
+    }
+
+    pub fn fmt<F: core::fmt::Write>(&mut self, expr: &Expr, f: &mut F) -> fmt::Result {
+        macro_rules! impl_parenter {
+            ($($name:ident => $pat:pat,)*) => {
+                $(
+                    let $name = |e: &Expr| matches!(e, $pat);
+                )*
+            };
+        }
+
+        impl_parenter! {
+            unary => Expr::BinOp { .. },
+            postfix => Expr::UnOp { .. } | Expr::BinOp { .. },
+            consecutive => Expr::UnOp { .. },
+        }
+
+        match *expr {
+            Expr::Ct { value, .. } => {
+                f.write_str("$: ")?;
+                self.fmt(value, f)
+            }
+            Expr::String { literal, .. } => f.write_str(literal),
+            Expr::Comment { literal, .. } => f.write_str(literal),
+            Expr::Mod { path, .. } => write!(f, "@use(\"{path}\")"),
+            Expr::Embed { path, .. } => write!(f, "@embed(\"{path}\")"),
+            Expr::Field { target, name: field, .. } => {
+                self.fmt_paren(target, f, postfix)?;
+                f.write_str(".")?;
+                f.write_str(field)
+            }
+            Expr::Directive { name, args, .. } => {
+                f.write_str("@")?;
+                f.write_str(name)?;
+                f.write_str("(")?;
+                self.fmt_list(f, false, ")", ",", args, Self::fmt)
+            }
+            Expr::Struct { fields, trailing_comma, packed, .. } => {
+                if packed {
+                    f.write_str("packed ")?;
+                }
+
+                write!(f, "struct {{")?;
+                self.fmt_list_low(f, trailing_comma, "}", ",", fields, |s, field, f| {
+                    match field {
+                        CommentOr::Or(StructField { name, ty, .. }) => {
+                            f.write_str(name)?;
+                            f.write_str(": ")?;
+                            s.fmt(ty, f)?
+                        }
+                        CommentOr::Comment { literal, .. } => {
+                            f.write_str(literal)?;
+                            f.write_str("\n")?;
+                        }
+                    }
+                    Ok(field.or().is_some())
+                })
+            }
+            Expr::Ctor { ty, fields, trailing_comma, .. } => {
+                if let Some(ty) = ty {
+                    self.fmt_paren(ty, f, unary)?;
+                }
+                f.write_str(".{")?;
+                self.fmt_list(
+                    f,
+                    trailing_comma,
+                    "}",
+                    ",",
+                    fields,
+                    |s: &mut Self, CtorField { name, value, .. }: &_, f| {
+                        f.write_str(name)?;
+                        if !matches!(value, &Expr::Ident { id, .. } if *name == &self.source[id.range()]) {
+                            f.write_str(": ")?;
+                            s.fmt(value, f)?;
+                        }
+                        Ok(())
+                    },
+                )
+            }
+            Expr::Tupl {
+                pos,
+                ty: Some(&Expr::Slice { pos: spos, size: Some(&Expr::Number { value, .. }), item }),
+                fields,
+                trailing_comma,
+            } if value as usize == fields.len() => self.fmt(
+                &Expr::Tupl {
+                    pos,
+                    ty: Some(&Expr::Slice { pos: spos, size: None, item }),
+                    fields,
+                    trailing_comma,
+                },
+                f,
+            ),
+            Expr::Tupl { ty, fields, trailing_comma, .. } => {
+                if let Some(ty) = ty {
+                    self.fmt_paren(ty, f, unary)?;
+                }
+                f.write_str(".(")?;
+                self.fmt_list(f, trailing_comma, ")", ",", fields, Self::fmt)
+            }
+            Expr::Slice { item, size, .. } => {
+                f.write_str("[")?;
+                self.fmt(item, f)?;
+                if let Some(size) = size {
+                    f.write_str("; ")?;
+                    self.fmt(size, f)?;
+                }
+                f.write_str("]")
+            }
+            Expr::Index { base, index } => {
+                self.fmt(base, f)?;
+                f.write_str("[")?;
+                self.fmt(index, f)?;
+                f.write_str("]")
+            }
+            Expr::UnOp { op, val, .. } => {
+                f.write_str(op.name())?;
+                self.fmt_paren(val, f, unary)
+            }
+            Expr::Break { .. } => f.write_str("break"),
+            Expr::Continue { .. } => f.write_str("continue"),
+            Expr::If { cond, then, else_, .. } => {
+                f.write_str("if ")?;
+                self.fmt(cond, f)?;
+                f.write_str(" ")?;
+                self.fmt_paren(then, f, consecutive)?;
+                if let Some(e) = else_ {
+                    f.write_str(" else ")?;
+                    self.fmt(e, f)?;
+                }
+                Ok(())
+            }
+            Expr::Loop { body, .. } => {
+                f.write_str("loop ")?;
+                self.fmt(body, f)
+            }
+            Expr::Closure { ret, body, args, .. } => {
+                f.write_str("fn(")?;
+                self.fmt_list(f, false, "", ",", args, |s, arg, f| {
+                    if arg.is_ct {
+                        f.write_str("$")?;
+                    }
+                    f.write_str(arg.name)?;
+                    f.write_str(": ")?;
+                    s.fmt(&arg.ty, f)
+                })?;
+                f.write_str("): ")?;
+                self.fmt(ret, f)?;
+                f.write_str(" ")?;
+                self.fmt_paren(body, f, consecutive)?;
+                Ok(())
+            }
+            Expr::Call { func, args, trailing_comma } => {
+                self.fmt_paren(func, f, postfix)?;
+                f.write_str("(")?;
+                self.fmt_list(f, trailing_comma, ")", ",", args, Self::fmt)
+            }
+            Expr::Return { val: Some(val), .. } => {
+                f.write_str("return ")?;
+                self.fmt(val, f)
+            }
+            Expr::Return { val: None, .. } => f.write_str("return"),
+            Expr::Wildcard { .. } => f.write_str("_"),
+            Expr::Ident { pos, is_ct, .. } => {
+                if is_ct {
+                    f.write_str("$")?;
+                }
+                f.write_str(&self.source[Lexer::restore(self.source, pos).eat().range()])
+            }
+            Expr::Block { stmts, .. } => {
+                f.write_str("{")?;
+                self.fmt_list(f, true, "}", "", stmts, Self::fmt)
+            }
+            Expr::Number { value, radix, .. } => {
+                f.write_str(match radix {
+                    Radix::Decimal => "",
+                    Radix::Hex => "0x",
+                    Radix::Octal => "0o",
+                    Radix::Binary => "0b",
+                })?;
+                let mut buf = [0u8; 64];
+                f.write_str(display_radix(radix, value as u64, &mut buf))
+            }
+            Expr::Float { pos, .. } => {
+                f.write_str(&self.source[Lexer::restore(self.source, pos).eat().range()])
+            }
+            Expr::Bool { value, .. } => f.write_str(if value { "true" } else { "false" }),
+            Expr::Idk { .. } => f.write_str("idk"),
+            Expr::Die { .. } => f.write_str("die"),
+            Expr::Null { .. } => f.write_str("null"),
+            Expr::BinOp {
+                left,
+                op: TokenKind::Assign,
+                right: &Expr::BinOp { left: lleft, op, right, .. },
+                ..
+            } if left.pos() == lleft.pos() => {
+                self.fmt(left, f)?;
+                f.write_str(" ")?;
+                f.write_str(op.name())?;
+                f.write_str("= ")?;
+                self.fmt(right, f)
+            }
+            Expr::BinOp { right, op, left, .. } => {
+                let prec_miss_left = |e: &Expr| {
+                    matches!(
+                        e, Expr::BinOp { op: lop, .. } if op.precedence() > lop.precedence()
+                    )
+                };
+                let prec_miss_right = |e: &Expr| {
+                    matches!(
+                        e, Expr::BinOp { op: lop, .. }
+                            if (op.precedence() == lop.precedence() && !op.is_comutative())
+                                || op.precedence() > lop.precedence()
+                    )
+                };
+
+                self.fmt_paren(left, f, prec_miss_left)?;
+                if let Some(mut prev) = self.source.get(..right.pos() as usize) {
+                    prev = prev.trim_end();
+                    let estimate_bound =
+                        prev.rfind(|c: char| c.is_ascii_whitespace()).map_or(prev.len(), |i| i + 1);
+                    let exact_bound = lexer::Lexer::new(&prev[estimate_bound..]).last().start;
+                    prev = &prev[..exact_bound as usize + estimate_bound];
+                    if preserve_newlines(prev) > 0 {
+                        f.write_str("\n")?;
+                        for _ in 0..self.depth + 1 {
+                            f.write_str("\t")?;
+                        }
+                        f.write_str(op.name())?;
+                        f.write_str(" ")?;
+                    } else {
+                        f.write_str(" ")?;
+                        f.write_str(op.name())?;
+                        f.write_str(" ")?;
+                    }
+                } else {
+                    f.write_str(" ")?;
+                    f.write_str(op.name())?;
+                    f.write_str(" ")?;
+                }
+                self.fmt_paren(right, f, prec_miss_right)
+            }
+        }
+    }
+}
+
+pub fn preserve_newlines(source: &str) -> usize {
+    source[source.trim_end().len()..].bytes().filter(|&c| c == b'\n').count()
+}
+
+pub fn insert_needed_semicolon(source: &str) -> bool {
+    let kind = lexer::Lexer::new(source).eat().kind;
+    kind.precedence().is_some() || matches!(kind, TokenKind::Ctor | TokenKind::Tupl)
+}
+
+impl core::fmt::Display for parser::Ast {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt_file(self.exprs(), &self.file, f)
+    }
+}
+
+pub fn fmt_file(exprs: &[Expr], file: &str, f: &mut impl fmt::Write) -> fmt::Result {
+    for (i, expr) in exprs.iter().enumerate() {
+        Formatter::new(file).fmt(expr, f)?;
+        if let Some(expr) = exprs.get(i + 1)
+            && let Some(rest) = file.get(expr.pos() as usize..)
+        {
+            if insert_needed_semicolon(rest) {
+                write!(f, ";")?;
+            }
+
+            if preserve_newlines(&file[..expr.pos() as usize]) > 1 {
+                writeln!(f)?;
+            }
+        }
+
+        if i + 1 != exprs.len() {
+            writeln!(f)?;
+        }
+    }
+    Ok(())
+}
+
+#[cfg(test)]
+pub mod test {
+    use {
+        crate::parser::{self, Ctx},
+        alloc::borrow::ToOwned,
+        std::{fmt::Write, string::String},
+    };
+
+    pub fn format(ident: &str, input: &str) {
+        let mut minned = input.to_owned();
+        let len = crate::fmt::minify(&mut minned);
+        minned.truncate(len);
+
+        let mut ctx = Ctx::default();
+        let ast = parser::Ast::new(ident, minned, &mut ctx, &mut parser::no_loader);
+        let mut output = String::new();
+        write!(output, "{ast}").unwrap();
+
+        let input_path = format!("formatter_{ident}.expected");
+        let output_path = format!("formatter_{ident}.actual");
+        std::fs::write(&input_path, input).unwrap();
+        std::fs::write(&output_path, output).unwrap();
+
+        let success = std::process::Command::new("diff")
+            .arg("-u")
+            .arg("--color")
+            .arg(&input_path)
+            .arg(&output_path)
+            .status()
+            .unwrap()
+            .success();
+        std::fs::remove_file(&input_path).unwrap();
+        std::fs::remove_file(&output_path).unwrap();
+        assert!(success, "test failed");
+    }
+
+    macro_rules! test {
+        ($($name:ident => $input:expr;)*) => {$(
+            #[test]
+            fn $name() {
+                format(stringify!($name), $input);
+            }
+        )*};
+    }
+
+    test! {
+        comments => "// comment\n// comment\n\n// comment\n\n\
+            /* comment */\n/* comment */\n\n/* comment */";
+        some_ordinary_code => "loft := fn(): int return loft(1, 2, 3)";
+        some_arg_per_line_code => "loft := fn(): int return loft(\
+            \n\t1,\n\t2,\n\t3,\n)";
+        some_ordinary_struct => "loft := fn(): int return loft.{a: 1, b: 2}";
+        some_ordinary_fild_per_lin_struct => "loft := fn(): int return loft.{\
+            \n\ta: 1,\n\tb: 2,\n}";
+        code_block => "loft := fn(): int {\n\tloft()\n\treturn 1\n}";
+    }
+}

lang/src/fs.rs

@@ -0,0 +1,372 @@
+use {
+    crate::{
+        parser::{Ast, Ctx, FileKind},
+        son::{self, hbvm::HbvmBackend},
+        ty,
+    },
+    alloc::{string::String, vec::Vec},
+    core::{fmt::Write, num::NonZeroUsize, ops::Deref},
+    hashbrown::hash_map,
+    std::{
+        collections::VecDeque,
+        eprintln,
+        ffi::OsStr,
+        io::{self, Write as _},
+        path::{Path, PathBuf},
+        string::ToString,
+        sync::Mutex,
+    },
+};
+
+pub struct Logger;
+
+impl log::Log for Logger {
+    fn enabled(&self, _: &log::Metadata) -> bool {
+        true
+    }
+
+    fn log(&self, record: &log::Record) {
+        if self.enabled(record.metadata()) {
+            eprintln!("{}", record.args())
+        }
+    }
+
+    fn flush(&self) {}
+}
+
+#[derive(Default)]
+pub struct Options {
+    pub fmt: bool,
+    pub fmt_stdout: bool,
+    pub dump_asm: bool,
+    pub extra_threads: usize,
+}
+
+impl Options {
+    pub fn from_args(args: &[&str], out: &mut Vec<u8>) -> std::io::Result<Self> {
+        if args.contains(&"--help") || args.contains(&"-h") {
+            writeln!(out, "Usage: hbc [OPTIONS...] <FILE>")?;
+            writeln!(out, include_str!("../command-help.txt"))?;
+            return Err(std::io::ErrorKind::Other.into());
+        }
+
+        Ok(Options {
+            fmt: args.contains(&"--fmt"),
+            fmt_stdout: args.contains(&"--fmt-stdout"),
+            dump_asm: args.contains(&"--dump-asm"),
+            extra_threads: args
+                .iter()
+                .position(|&a| a == "--threads")
+                .map(|i| {
+                    args[i + 1].parse::<NonZeroUsize>().map_err(|e| {
+                        writeln!(out, "--threads expects non zero integer: {e}")
+                            .err()
+                            .unwrap_or(std::io::ErrorKind::Other.into())
+                    })
+                })
+                .transpose()?
+                .map_or(1, NonZeroUsize::get)
+                - 1,
+        })
+    }
+}
+
+pub fn run_compiler(root_file: &str, options: Options, out: &mut Vec<u8>) -> std::io::Result<()> {
+    let parsed = parse_from_fs(options.extra_threads, root_file)?;
+
+    if (options.fmt || options.fmt_stdout) && !parsed.errors.is_empty() {
+        *out = parsed.errors.into_bytes();
+        return Err(std::io::Error::other("fmt fialed (errors are in out)"));
+    }
+
+    if options.fmt {
+        let mut output = String::new();
+        for ast in parsed.ast {
+            write!(output, "{ast}").unwrap();
+            if ast.file.deref().trim() != output.as_str().trim() {
+                std::fs::write(&*ast.path, &output)?;
+            }
+            output.clear();
+        }
+    } else if options.fmt_stdout {
+        write!(out, "{}", &parsed.ast[0])?;
+    } else {
+        let mut backend = HbvmBackend::default();
+        let mut ctx = crate::son::CodegenCtx::default();
+        *ctx.parser.errors.get_mut() = parsed.errors;
+        let mut codegen = son::Codegen::new(&mut backend, &parsed.ast, &mut ctx);
+
+        codegen.push_embeds(parsed.embeds);
+        codegen.generate(ty::Module::MAIN);
+
+        if !codegen.errors.borrow().is_empty() {
+            drop(codegen);
+            *out = ctx.parser.errors.into_inner().into_bytes();
+            return Err(std::io::Error::other("compilation faoled (errors are in out)"));
+        }
+
+        codegen.assemble(out);
+
+        if options.dump_asm {
+            let mut disasm = String::new();
+            codegen.disasm(&mut disasm, out).map_err(|e| io::Error::other(e.to_string()))?;
+            *out = disasm.into_bytes();
+        }
+    }
+
+    Ok(())
+}
+
+struct TaskQueue<T> {
+    inner: Mutex<TaskQueueInner<T>>,
+}
+
+impl<T> TaskQueue<T> {
+    fn new(max_waiters: usize) -> Self {
+        Self { inner: Mutex::new(TaskQueueInner::new(max_waiters)) }
+    }
+
+    pub fn push(&self, message: T) {
+        self.extend([message]);
+    }
+
+    pub fn extend(&self, messages: impl IntoIterator<Item = T>) {
+        self.inner.lock().unwrap().push(messages);
+    }
+
+    pub fn pop(&self) -> Option<T> {
+        TaskQueueInner::pop(&self.inner)
+    }
+}
+
+enum TaskSlot<T> {
+    Waiting,
+    Delivered(T),
+    Closed,
+}
+
+struct TaskQueueInner<T> {
+    max_waiters: usize,
+    messages: VecDeque<T>,
+    parked: VecDeque<(*mut TaskSlot<T>, std::thread::Thread)>,
+}
+
+unsafe impl<T: Send> Send for TaskQueueInner<T> {}
+unsafe impl<T: Send + Sync> Sync for TaskQueueInner<T> {}
+
+impl<T> TaskQueueInner<T> {
+    fn new(max_waiters: usize) -> Self {
+        Self { max_waiters, messages: Default::default(), parked: Default::default() }
+    }
+
+    fn push(&mut self, messages: impl IntoIterator<Item = T>) {
+        for msg in messages {
+            if let Some((dest, thread)) = self.parked.pop_front() {
+                unsafe { *dest = TaskSlot::Delivered(msg) };
+                thread.unpark();
+            } else {
+                self.messages.push_back(msg);
+            }
+        }
+    }
+
+    fn pop(s: &Mutex<Self>) -> Option<T> {
+        let mut res = TaskSlot::Waiting;
+        {
+            let mut s = s.lock().unwrap();
+            if let Some(msg) = s.messages.pop_front() {
+                return Some(msg);
+            }
+
+            if s.max_waiters == s.parked.len() + 1 {
+                for (dest, thread) in s.parked.drain(..) {
+                    unsafe { *dest = TaskSlot::Closed };
+                    thread.unpark();
+                }
+                return None;
+            }
+
+            s.parked.push_back((&mut res, std::thread::current()));
+        }
+
+        loop {
+            std::thread::park();
+
+            let _s = s.lock().unwrap();
+            match core::mem::replace(&mut res, TaskSlot::Waiting) {
+                TaskSlot::Delivered(msg) => return Some(msg),
+                TaskSlot::Closed => return None,
+                TaskSlot::Waiting => {}
+            }
+        }
+    }
+}
+
+pub struct Loaded {
+    ast: Vec<Ast>,
+    embeds: Vec<Vec<u8>>,
+    errors: String,
+}
+
+pub fn parse_from_fs(extra_threads: usize, root: &str) -> io::Result<Loaded> {
+    fn resolve(path: &str, from: &str, tmp: &mut PathBuf) -> Result<PathBuf, CantLoadFile> {
+        tmp.clear();
+        match Path::new(from).parent() {
+            Some(parent) => tmp.extend([parent, Path::new(path)]),
+            None => tmp.push(path),
+        };
+
+        tmp.canonicalize().map_err(|source| CantLoadFile { path: std::mem::take(tmp), source })
+    }
+
+    #[derive(Debug)]
+    struct CantLoadFile {
+        path: PathBuf,
+        source: io::Error,
+    }
+
+    impl core::fmt::Display for CantLoadFile {
+        fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+            write!(f, "can't load file: {}", display_rel_path(&self.path),)
+        }
+    }
+
+    impl core::error::Error for CantLoadFile {
+        fn source(&self) -> Option<&(dyn core::error::Error + 'static)> {
+            Some(&self.source)
+        }
+    }
+
+    impl From<CantLoadFile> for io::Error {
+        fn from(e: CantLoadFile) -> Self {
+            io::Error::new(io::ErrorKind::InvalidData, e)
+        }
+    }
+
+    type Task = (usize, PathBuf);
+
+    let seen_modules = Mutex::new(crate::HashMap::<PathBuf, usize>::default());
+    let seen_embeds = Mutex::new(crate::HashMap::<PathBuf, usize>::default());
+    let tasks = TaskQueue::<Task>::new(extra_threads + 1);
+    let ast = Mutex::new(Vec::<io::Result<Ast>>::new());
+    let embeds = Mutex::new(Vec::<Vec<u8>>::new());
+
+    let loader = |path: &str, from: &str, kind: FileKind, tmp: &mut _| {
+        let mut physiscal_path = resolve(path, from, tmp)?;
+
+        match kind {
+            FileKind::Module => {
+                let id = {
+                    let mut seen = seen_modules.lock().unwrap();
+                    let len = seen.len();
+                    match seen.entry(physiscal_path) {
+                        hash_map::Entry::Occupied(entry) => {
+                            return Ok(*entry.get());
+                        }
+                        hash_map::Entry::Vacant(entry) => {
+                            physiscal_path = entry.insert_entry(len as _).key().clone();
+                            len
+                        }
+                    }
+                };
+
+                if !physiscal_path.exists() {
+                    return Err(io::Error::new(
+                        io::ErrorKind::NotFound,
+                        format!("can't find file: {}", display_rel_path(&physiscal_path)),
+                    ));
+                }
+
+                tasks.push((id, physiscal_path));
+                Ok(id)
+            }
+            FileKind::Embed => {
+                let id = {
+                    let mut seen = seen_embeds.lock().unwrap();
+                    let len = seen.len();
+                    match seen.entry(physiscal_path) {
+                        hash_map::Entry::Occupied(entry) => {
+                            return Ok(*entry.get());
+                        }
+                        hash_map::Entry::Vacant(entry) => {
+                            physiscal_path = entry.insert_entry(len as _).key().clone();
+                            len
+                        }
+                    }
+                };
+
+                let content = std::fs::read(&physiscal_path).map_err(|e| {
+                    io::Error::new(
+                        e.kind(),
+                        format!(
+                            "can't load embed file: {}: {e}",
+                            display_rel_path(&physiscal_path)
+                        ),
+                    )
+                })?;
+                let mut embeds = embeds.lock().unwrap();
+                if id as usize >= embeds.len() {
+                    embeds.resize(id as usize + 1, Default::default());
+                }
+                embeds[id as usize] = content;
+                Ok(id)
+            }
+        }
+    };
+
+    let execute_task = |ctx: &mut _, (_, path): Task, tmp: &mut _| {
+        let path = path.to_str().ok_or_else(|| {
+            io::Error::new(
+                io::ErrorKind::InvalidData,
+                format!("path contains invalid characters: {}", display_rel_path(&path)),
+            )
+        })?;
+        Ok(Ast::new(path, std::fs::read_to_string(path)?, ctx, &mut |path, from, kind| {
+            loader(path, from, kind, tmp).map_err(|e| e.to_string())
+        }))
+    };
+
+    let thread = || {
+        let mut ctx = Ctx::default();
+        let mut tmp = PathBuf::new();
+        while let Some(task @ (indx, ..)) = tasks.pop() {
+            let res = execute_task(&mut ctx, task, &mut tmp);
+            let mut ast = ast.lock().unwrap();
+            let len = ast.len().max(indx + 1);
+            ast.resize_with(len, || Err(io::ErrorKind::InvalidData.into()));
+            ast[indx] = res;
+        }
+        ctx.errors.into_inner()
+    };
+
+    let path = Path::new(root).canonicalize().map_err(|e| {
+        io::Error::new(e.kind(), format!("can't canonicalize root file path ({root})"))
+    })?;
+    seen_modules.lock().unwrap().insert(path.clone(), 0);
+    tasks.push((0, path));
+
+    let errors = if extra_threads == 0 {
+        thread()
+    } else {
+        std::thread::scope(|s| {
+            (0..extra_threads + 1)
+                .map(|_| s.spawn(thread))
+                .collect::<Vec<_>>()
+                .into_iter()
+                .map(|t| t.join().unwrap())
+                .collect::<String>()
+        })
+    };
+
+    Ok(Loaded {
+        ast: ast.into_inner().unwrap().into_iter().collect::<io::Result<Vec<_>>>()?,
+        embeds: embeds.into_inner().unwrap(),
+        errors,
+    })
+}
+
+pub fn display_rel_path(path: &(impl AsRef<OsStr> + ?Sized)) -> std::path::Display {
+    static CWD: std::sync::LazyLock<PathBuf> =
+        std::sync::LazyLock::new(|| std::env::current_dir().unwrap_or_default());
+    std::path::Path::new(path).strip_prefix(&*CWD).unwrap_or(std::path::Path::new(path)).display()
+}

lang/src/fuzz.rs

@@ -0,0 +1,141 @@
+use {
+    crate::{
+        lexer::TokenKind,
+        parser,
+        son::{hbvm::HbvmBackend, Codegen, CodegenCtx},
+        ty::Module,
+    },
+    alloc::string::String,
+    core::{fmt::Write, hash::BuildHasher, ops::Range},
+};
+
+#[derive(Default)]
+struct Rand(pub u64);
+
+impl Rand {
+    pub fn next(&mut self) -> u64 {
+        self.0 = crate::FnvBuildHasher::default().hash_one(self.0);
+        self.0
+    }
+
+    pub fn range(&mut self, min: u64, max: u64) -> u64 {
+        self.next() % (max - min) + min
+    }
+
+    fn bool(&mut self) -> bool {
+        self.next() % 2 == 0
+    }
+}
+
+#[derive(Default)]
+struct FuncGen {
+    rand: Rand,
+    buf: String,
+    vars: u64,
+}
+
+impl FuncGen {
+    fn gen(&mut self, seed: u64) -> &str {
+        self.rand = Rand(seed);
+        self.buf.clear();
+        self.buf.push_str("main := fn(): void ");
+        self.block().unwrap();
+        &self.buf
+    }
+
+    fn block(&mut self) -> core::fmt::Result {
+        let prev_vars = self.vars;
+        self.buf.push('{');
+        for _ in 0..self.rand.range(1, 10) {
+            self.stmt()?;
+        }
+        self.buf.push('}');
+        self.vars = prev_vars;
+
+        Ok(())
+    }
+
+    fn stmt(&mut self) -> core::fmt::Result {
+        match self.rand.range(0, 100) {
+            0..4 => _ = self.block(),
+            4..10 => {
+                write!(self.buf, "var{} := ", self.vars)?;
+                self.expr()?;
+                self.vars += 1;
+            }
+
+            10..20 if self.vars != 0 => {
+                write!(self.buf, "var{} = ", self.rand.range(0, self.vars))?;
+                self.expr()?;
+            }
+            20..23 => {
+                self.buf.push_str("if ");
+                self.expr()?;
+                self.block()?;
+                if self.rand.bool() {
+                    self.buf.push_str(" else ");
+                    self.block()?;
+                }
+            }
+            _ => {
+                self.buf.push_str("return ");
+                self.expr()?;
+            }
+        }
+
+        self.buf.push(';');
+        Ok(())
+    }
+
+    fn expr(&mut self) -> core::fmt::Result {
+        match self.rand.range(0, 100) {
+            0..80 => {
+                write!(self.buf, "{}", self.rand.next())
+            }
+            80..90 if self.vars != 0 => {
+                write!(self.buf, "var{}", self.rand.range(0, self.vars))
+            }
+            80..100 => {
+                self.expr()?;
+                let ops = [
+                    TokenKind::Add,
+                    TokenKind::Sub,
+                    TokenKind::Mul,
+                    TokenKind::Div,
+                    TokenKind::Shl,
+                    TokenKind::Eq,
+                    TokenKind::Ne,
+                    TokenKind::Lt,
+                    TokenKind::Gt,
+                    TokenKind::Le,
+                    TokenKind::Ge,
+                    TokenKind::Band,
+                    TokenKind::Bor,
+                    TokenKind::Xor,
+                    TokenKind::Mod,
+                    TokenKind::Shr,
+                ];
+                let op = ops[self.rand.range(0, ops.len() as u64) as usize];
+                write!(self.buf, " {op} ")?;
+                self.expr()
+            }
+            _ => unreachable!(),
+        }
+    }
+}
+
+pub fn fuzz(seed_range: Range<u64>) {
+    let mut gen = FuncGen::default();
+    let mut ctx = CodegenCtx::default();
+    for i in seed_range {
+        ctx.clear();
+        let src = gen.gen(i);
+        let parsed = parser::Ast::new("fuzz", src, &mut ctx.parser, &mut parser::no_loader);
+
+        assert!(ctx.parser.errors.get_mut().is_empty());
+
+        let mut backend = HbvmBackend::default();
+        let mut cdg = Codegen::new(&mut backend, core::slice::from_ref(&parsed), &mut ctx);
+        cdg.generate(Module::MAIN);
+    }
+}

lang/src/fuzz_main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    hblang::fuzz::fuzz(0..1000000);
+}

lang/src/lexer.rs

@@ -1,5 +1,3 @@
-use crate::{instrs, EncodedInstr};
-
 const fn ascii_mask(chars: &[u8]) -> u128 {
     let mut eq = 0;
     let mut i = 0;
@@ -19,7 +17,7 @@ pub struct Token {
 }
 
 impl Token {
-    pub fn range(&self) -> std::ops::Range<usize> {
+    pub fn range(&self) -> core::ops::Range<usize> {
         self.start as usize..self.end as usize
     }
 }
@@ -44,13 +42,15 @@ macro_rules! gen_token_kind {
             )*
         }
     ) => {
-        impl std::fmt::Display for $name {
-            fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        impl core::fmt::Display for $name {
+            fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
                 f.write_str(self.name())
             }
         }
 
         impl $name {
+            pub const OPS: &[Self] = &[$($(Self::$op),*),*];
+
             pub fn name(&self) -> &str {
                 let sf = unsafe { &*(self as *const _ as *const u8) } ;
                 match *self {
@@ -59,7 +59,7 @@ macro_rules! gen_token_kind {
                     $( Self::$punkt   => stringify!($punkt_lit),   )*
                     $($( Self::$op    => $op_lit,
                       $(Self::$assign => concat!($op_lit, "="),)?)*)*
-                    _ => unsafe { std::str::from_utf8_unchecked(std::slice::from_ref(&sf)) },
+                    _ => unsafe { core::str::from_utf8_unchecked(core::slice::from_ref(&sf)) },
                 }
             }
 
@@ -72,7 +72,6 @@ macro_rules! gen_token_kind {
                 } + 1)
             }
 
-            #[inline(always)]
             fn from_ident(ident: &[u8]) -> Self {
                 match ident {
                     $($keyword_lit => Self::$keyword,)*
@@ -83,7 +82,7 @@ macro_rules! gen_token_kind {
     };
 }
 
-#[derive(Debug, PartialEq, Eq, Clone, Copy, Hash, PartialOrd, Ord)]
+#[derive(PartialEq, Eq, Clone, Copy, Hash, PartialOrd, Ord)]
 #[repr(u8)]
 pub enum TokenKind {
     Not = b'!',
@@ -117,6 +116,7 @@ pub enum TokenKind {
 
     Ident,
     Number,
+    Float,
     Eof,
 
     Ct,
@@ -129,9 +129,12 @@ pub enum TokenKind {
     Continue,
     Fn,
     Struct,
+    Packed,
     True,
     False,
+    Null,
     Idk,
+    Die,
 
     Ctor,
     Tupl,
@@ -145,6 +148,7 @@ pub enum TokenKind {
     RBrack = b']',
     Xor = b'^',
     Tick = b'`',
+    Under = b'_',
     // Unused = a-z
     LBrace = b'{',
     Bor = b'|',
@@ -169,93 +173,19 @@ pub enum TokenKind {
     ShlAss = b'<' - 5 + 128,
 }
 
+impl core::fmt::Debug for TokenKind {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        core::fmt::Display::fmt(self, f)
+    }
+}
+
 impl TokenKind {
-    #[allow(clippy::type_complexity)]
-    pub fn cond_op(self, signed: bool) -> Option<(fn(u8, u8, i16) -> EncodedInstr, bool)> {
-        Some((
-            match self {
-                Self::Le if signed => instrs::jgts,
-                Self::Le => instrs::jgtu,
-                Self::Lt if signed => instrs::jlts,
-                Self::Lt => instrs::jltu,
-                Self::Ge if signed => instrs::jlts,
-                Self::Ge => instrs::jltu,
-                Self::Gt if signed => instrs::jgts,
-                Self::Gt => instrs::jgtu,
-                Self::Eq => instrs::jne,
-                Self::Ne => instrs::jeq,
-                _ => return None,
-            },
-            matches!(self, Self::Lt | TokenKind::Gt),
-        ))
-    }
-
-    pub fn binop(self, signed: bool, size: u32) -> Option<fn(u8, u8, u8) -> EncodedInstr> {
-        use instrs::*;
-
-        macro_rules! div { ($($op:ident),*) => {[$(|a, b, c| $op(a, 0, b, c)),*]}; }
-        macro_rules! rem { ($($op:ident),*) => {[$(|a, b, c| $op(0, a, b, c)),*]}; }
-
-        let ops = match self {
-            Self::Add => [add8, add16, add32, add64],
-            Self::Sub => [sub8, sub16, sub32, sub64],
-            Self::Mul => [mul8, mul16, mul32, mul64],
-            Self::Div if signed => div!(dirs8, dirs16, dirs32, dirs64),
-            Self::Div => div!(diru8, diru16, diru32, diru64),
-            Self::Mod if signed => rem!(dirs8, dirs16, dirs32, dirs64),
-            Self::Mod => rem!(diru8, diru16, diru32, diru64),
-            Self::Band => return Some(and),
-            Self::Bor => return Some(or),
-            Self::Xor => return Some(xor),
-            Self::Shl => [slu8, slu16, slu32, slu64],
-            Self::Shr if signed => [srs8, srs16, srs32, srs64],
-            Self::Shr => [sru8, sru16, sru32, sru64],
-            _ => return None,
-        };
-
-        Some(ops[size.ilog2() as usize])
-    }
-
-    #[allow(clippy::type_complexity)]
-    pub fn imm_binop(self, signed: bool, size: u32) -> Option<fn(u8, u8, u64) -> EncodedInstr> {
-        use instrs::*;
-        macro_rules! def_op {
-            ($name:ident |$a:ident, $b:ident, $c:ident| $($tt:tt)*) => {
-                macro_rules! $name {
-                    ($$($$op:ident),*) => {
-                        [$$(
-                            |$a, $b, $c: u64| $$op($($tt)*),
-                        )*]
-                    }
-                }
-            };
-        }
-
-        def_op!(basic_op | a, b, c | a, b, c as _);
-        def_op!(sub_op | a, b, c | a, b, c.wrapping_neg() as _);
-
-        let ops = match self {
-            Self::Add => basic_op!(addi8, addi16, addi32, addi64),
-            Self::Sub => sub_op!(addi8, addi16, addi32, addi64),
-            Self::Mul => basic_op!(muli8, muli16, muli32, muli64),
-            Self::Band => return Some(andi),
-            Self::Bor => return Some(ori),
-            Self::Xor => return Some(xori),
-            Self::Shr if signed => basic_op!(srui8, srui16, srui32, srui64),
-            Self::Shr => basic_op!(srui8, srui16, srui32, srui64),
-            Self::Shl => basic_op!(slui8, slui16, slui32, slui64),
-            _ => return None,
-        };
-
-        Some(ops[size.ilog2() as usize])
-    }
-
     pub fn ass_op(self) -> Option<Self> {
         let id = (self as u8).saturating_sub(128);
         if ascii_mask(b"|+-*/%^&79") & (1u128 << id) == 0 {
             return None;
         }
-        Some(unsafe { std::mem::transmute::<u8, Self>(id) })
+        Some(unsafe { core::mem::transmute::<u8, Self>(id) })
     }
 
     pub fn is_comutative(self) -> bool {
@@ -263,15 +193,62 @@ impl TokenKind {
         matches!(self, S::Eq | S::Ne | S::Bor | S::Xor | S::Band | S::Add | S::Mul)
     }
 
-    pub fn apply_binop(self, a: i64, b: i64) -> i64 {
+    pub fn is_supported_float_op(self) -> bool {
+        matches!(
+            self,
+            Self::Add
+                | Self::Sub
+                | Self::Mul
+                | Self::Div
+                | Self::Eq
+                | Self::Ne
+                | Self::Le
+                | Self::Ge
+                | Self::Lt
+                | Self::Gt
+        )
+    }
+
+    pub fn apply_binop(self, a: i64, b: i64, float: bool) -> i64 {
+        if float {
+            debug_assert!(self.is_supported_float_op());
+            let [a, b] = [f64::from_bits(a as _), f64::from_bits(b as _)];
+            let res = match self {
+                Self::Add => a + b,
+                Self::Sub => a - b,
+                Self::Mul => a * b,
+                Self::Div => a / b,
+                Self::Eq => return (a == b) as i64,
+                Self::Ne => return (a != b) as i64,
+                Self::Lt => return (a < b) as i64,
+                Self::Gt => return (a > b) as i64,
+                Self::Le => return (a >= b) as i64,
+                Self::Ge => return (a <= b) as i64,
+                _ => todo!("floating point op: {self}"),
+            };
+
+            return res.to_bits() as _;
+        }
+
         match self {
             Self::Add => a.wrapping_add(b),
             Self::Sub => a.wrapping_sub(b),
             Self::Mul => a.wrapping_mul(b),
+            Self::Div if b == 0 => 0,
             Self::Div => a.wrapping_div(b),
             Self::Shl => a.wrapping_shl(b as _),
             Self::Eq => (a == b) as i64,
+            Self::Ne => (a != b) as i64,
+            Self::Lt => (a < b) as i64,
+            Self::Gt => (a > b) as i64,
+            Self::Le => (a >= b) as i64,
+            Self::Ge => (a <= b) as i64,
             Self::Band => a & b,
+            Self::Bor => a | b,
+            Self::Xor => a ^ b,
+            Self::Mod if b == 0 => 0,
+            Self::Mod => a.wrapping_rem(b),
+            Self::Shr => a.wrapping_shr(b as _),
             s => todo!("{s}"),
         }
     }
@@ -282,19 +259,30 @@ impl TokenKind {
             && self.precedence() != Self::Eof.precedence()
     }
 
-    pub fn unop(&self) -> Option<fn(u8, u8) -> EncodedInstr> {
-        Some(match self {
-            Self::Sub => instrs::neg,
-            _ => return None,
-        })
-    }
-
-    pub fn apply_unop(&self, value: i64) -> i64 {
+    pub fn apply_unop(&self, value: i64, float: bool) -> i64 {
         match self {
+            Self::Sub if float => (-f64::from_bits(value as _)).to_bits() as _,
             Self::Sub => value.wrapping_neg(),
+            Self::Float if float => value,
+            Self::Float => (value as f64).to_bits() as _,
+            Self::Number => {
+                debug_assert!(float);
+                f64::from_bits(value as _).to_bits() as _
+            }
             s => todo!("{s}"),
         }
     }
+
+    pub fn closing(&self) -> Option<TokenKind> {
+        Some(match self {
+            Self::Ctor => Self::RBrace,
+            Self::Tupl => Self::RParen,
+            Self::LParen => Self::RParen,
+            Self::LBrack => Self::RBrack,
+            Self::LBrace => Self::RBrace,
+            _ => return None,
+        })
+    }
 }
 
 gen_token_kind! {
@@ -303,6 +291,7 @@ gen_token_kind! {
         CtIdent,
         Ident,
         Number,
+        Float,
         Eof,
         Directive,
         #[keywords]
@@ -314,9 +303,13 @@ gen_token_kind! {
         Continue  = b"continue",
         Fn        = b"fn",
         Struct    = b"struct",
+        Packed    = b"packed",
         True      = b"true",
         False     = b"false",
-        Idk = b"idk",
+        Null      = b"null",
+        Idk       = b"idk",
+        Die       = b"die",
+        Under     = b"_",
         #[punkt]
         Ctor   = ".{",
         Tupl   = ".(",
@@ -359,7 +352,7 @@ gen_token_kind! {
 
 pub struct Lexer<'a> {
     pos: u32,
-    bytes: &'a [u8],
+    source: &'a [u8],
 }
 
 impl<'a> Lexer<'a> {
@@ -367,23 +360,42 @@ impl<'a> Lexer<'a> {
         Self::restore(input, 0)
     }
 
+    pub fn uses(input: &'a str) -> impl Iterator<Item = &'a str> {
+        let mut s = Self::new(input);
+        core::iter::from_fn(move || loop {
+            let t = s.eat();
+            if t.kind == TokenKind::Eof {
+                return None;
+            }
+            if t.kind == TokenKind::Directive
+                && s.slice(t.range()) == "use"
+                && s.eat().kind == TokenKind::LParen
+            {
+                let t = s.eat();
+                if t.kind == TokenKind::DQuote {
+                    return Some(&s.slice(t.range())[1..t.range().len() - 1]);
+                }
+            }
+        })
+    }
+
     pub fn restore(input: &'a str, pos: u32) -> Self {
-        Self { pos, bytes: input.as_bytes() }
+        Self { pos, source: input.as_bytes() }
     }
 
     pub fn source(&self) -> &'a str {
-        unsafe { std::str::from_utf8_unchecked(self.bytes) }
+        unsafe { core::str::from_utf8_unchecked(self.source) }
     }
 
-    pub fn slice(&self, tok: std::ops::Range<usize>) -> &'a str {
-        unsafe { std::str::from_utf8_unchecked(&self.bytes[tok]) }
+    pub fn slice(&self, tok: core::ops::Range<usize>) -> &'a str {
+        unsafe { core::str::from_utf8_unchecked(&self.source[tok]) }
     }
 
     fn peek(&self) -> Option<u8> {
-        if std::intrinsics::unlikely(self.pos >= self.bytes.len() as u32) {
+        if core::intrinsics::unlikely(self.pos >= self.source.len() as u32) {
             None
         } else {
-            Some(unsafe { *self.bytes.get_unchecked(self.pos as usize) })
+            Some(unsafe { *self.source.get_unchecked(self.pos as usize) })
         }
     }
 
@@ -394,9 +406,9 @@ impl<'a> Lexer<'a> {
     }
 
     pub fn last(&mut self) -> Token {
-        let mut token = self.next();
+        let mut token = self.eat();
         loop {
-            let next = self.next();
+            let next = self.eat();
             if next.kind == TokenKind::Eof {
                 break;
             }
@@ -405,7 +417,7 @@ impl<'a> Lexer<'a> {
         token
     }
 
-    pub fn next(&mut self) -> Token {
+    pub fn eat(&mut self) -> Token {
         use TokenKind as T;
         loop {
             let mut start = self.pos;
@@ -420,7 +432,7 @@ impl<'a> Lexer<'a> {
                 }
             };
 
-            let identity = |s: u8| unsafe { std::mem::transmute::<u8, T>(s) };
+            let identity = |s: u8| unsafe { core::mem::transmute::<u8, T>(s) };
 
             let kind = match c {
                 ..=b' ' => continue,
@@ -446,11 +458,19 @@ impl<'a> Lexer<'a> {
                     while let Some(b'0'..=b'9') = self.peek() {
                         self.advance();
                     }
-                    T::Number
+
+                    if self.advance_if(b'.') {
+                        while let Some(b'0'..=b'9') = self.peek() {
+                            self.advance();
+                        }
+                        T::Float
+                    } else {
+                        T::Number
+                    }
                 }
                 b'a'..=b'z' | b'A'..=b'Z' | b'_' | 127.. => {
                     advance_ident(self);
-                    let ident = &self.bytes[start as usize..self.pos as usize];
+                    let ident = &self.source[start as usize..self.pos as usize];
                     T::from_ident(ident)
                 }
                 b'"' | b'\'' => loop {
@@ -462,10 +482,18 @@ impl<'a> Lexer<'a> {
                     }
                 },
                 b'/' if self.advance_if(b'/') => {
-                    while let Some(l) = self.advance()
+                    while let Some(l) = self.peek()
                         && l != b'\n'
-                    {}
-                    T::Comment
+                    {
+                        self.pos += 1;
+                    }
+
+                    let end = self.source[..self.pos as usize]
+                        .iter()
+                        .rposition(|&b| !b.is_ascii_whitespace())
+                        .map_or(self.pos, |i| i as u32 + 1);
+
+                    return Token { kind: T::Comment, start, end };
                 }
                 b'/' if self.advance_if(b'*') => {
                     let mut depth = 1;

lang/src/main.rs

@@ -0,0 +1,26 @@
+#[cfg(feature = "std")]
+fn main() {
+    use std::io::Write;
+
+    fn run(out: &mut Vec<u8>) -> std::io::Result<()> {
+        let args = std::env::args().collect::<Vec<_>>();
+        let args = args.iter().map(String::as_str).collect::<Vec<_>>();
+
+        let opts = hblang::Options::from_args(&args, out)?;
+        let file = args.iter().filter(|a| !a.starts_with('-')).nth(1).copied().unwrap_or("main.hb");
+
+        hblang::run_compiler(file, opts, out)
+    }
+
+    log::set_logger(&hblang::fs::Logger).unwrap();
+    log::set_max_level(log::LevelFilter::Error);
+
+    let mut out = Vec::new();
+    match run(&mut out) {
+        Ok(_) => std::io::stdout().write_all(&out).unwrap(),
+        Err(_) => {
+            std::io::stderr().write_all(&out).unwrap();
+            std::process::exit(1);
+        }
+    }
+}

lang/src/regalloc.rs

@@ -0,0 +1,2 @@
+
+

lang/src/son/hbvm.rs

@@ -0,0 +1,767 @@
+use {
+    super::{AssemblySpec, Backend, Nid, Node, Nodes},
+    crate::{
+        lexer::TokenKind,
+        parser, reg,
+        son::{debug_assert_matches, write_reloc, Kind, MEM},
+        ty::{self, Loc, Module},
+        utils::{Ent, EntVec},
+        Offset, Reloc, Size, TypedReloc, Types,
+    },
+    alloc::{boxed::Box, collections::BTreeMap, string::String, vec::Vec},
+    core::mem,
+    hbbytecode::{self as instrs, *},
+};
+
+mod my_regalloc;
+mod their_regalloc;
+
+struct FuncDt {
+    offset: Offset,
+    // TODO: change to indices into common vec
+    relocs: Vec<TypedReloc>,
+    code: Vec<u8>,
+}
+
+impl Default for FuncDt {
+    fn default() -> Self {
+        Self { offset: u32::MAX, relocs: Default::default(), code: Default::default() }
+    }
+}
+
+struct GlobalDt {
+    offset: Offset,
+}
+
+impl Default for GlobalDt {
+    fn default() -> Self {
+        Self { offset: u32::MAX }
+    }
+}
+
+#[derive(Default)]
+struct Assembler {
+    frontier: Vec<ty::Id>,
+    globals: Vec<ty::Global>,
+    funcs: Vec<ty::Func>,
+}
+
+#[derive(Default)]
+pub struct HbvmBackend {
+    funcs: EntVec<ty::Func, FuncDt>,
+    globals: EntVec<ty::Global, GlobalDt>,
+    asm: Assembler,
+    ralloc: their_regalloc::Regalloc,
+    ralloc_my: my_regalloc::Res,
+
+    ret_relocs: Vec<Reloc>,
+    relocs: Vec<TypedReloc>,
+    jump_relocs: Vec<(Nid, Reloc)>,
+    code: Vec<u8>,
+    offsets: Vec<Offset>,
+}
+
+impl HbvmBackend {
+    fn emit(&mut self, instr: (usize, [u8; instrs::MAX_SIZE])) {
+        emit(&mut self.code, instr);
+    }
+}
+
+impl Backend for HbvmBackend {
+    fn assemble_bin(&mut self, entry: ty::Func, types: &Types, to: &mut Vec<u8>) {
+        to.extend([0u8; HEADER_SIZE]);
+
+        binary_prelude(to);
+        let AssemblySpec { code_length, data_length, entry } =
+            self.assemble_reachable(entry, types, to);
+
+        let exe = AbleOsExecutableHeader {
+            magic_number: [0x15, 0x91, 0xD2],
+            executable_version: 0,
+            code_length,
+            data_length,
+            debug_length: 0,
+            config_length: 0,
+            metadata_length: 0,
+        };
+        Reloc::new(HEADER_SIZE, 3, 4).apply_jump(to, entry, 0);
+
+        unsafe { *to.as_mut_ptr().cast::<AbleOsExecutableHeader>() = exe }
+    }
+
+    fn assemble_reachable(
+        &mut self,
+        from: ty::Func,
+        types: &Types,
+        to: &mut Vec<u8>,
+    ) -> AssemblySpec {
+        debug_assert!(self.asm.frontier.is_empty());
+        debug_assert!(self.asm.funcs.is_empty());
+        debug_assert!(self.asm.globals.is_empty());
+
+        self.globals.shadow(types.ins.globals.len());
+
+        self.asm.frontier.push(ty::Kind::Func(from).compress());
+        while let Some(itm) = self.asm.frontier.pop() {
+            match itm.expand() {
+                ty::Kind::Func(func) => {
+                    let fuc = &mut self.funcs[func];
+                    debug_assert!(!fuc.code.is_empty());
+                    if fuc.offset != u32::MAX {
+                        continue;
+                    }
+                    fuc.offset = 0;
+                    self.asm.funcs.push(func);
+                    self.asm.frontier.extend(fuc.relocs.iter().map(|r| r.target));
+                }
+                ty::Kind::Global(glob) => {
+                    let glb = &mut self.globals[glob];
+                    if glb.offset != u32::MAX {
+                        continue;
+                    }
+                    glb.offset = 0;
+                    self.asm.globals.push(glob);
+                }
+                _ => unreachable!(),
+            }
+        }
+
+        let init_len = to.len();
+
+        for &func in &self.asm.funcs {
+            let fuc = &mut self.funcs[func];
+            fuc.offset = to.len() as _;
+            debug_assert!(!fuc.code.is_empty());
+            to.extend(&fuc.code);
+        }
+
+        let code_length = to.len() - init_len;
+
+        for global in self.asm.globals.drain(..) {
+            self.globals[global].offset = to.len() as _;
+            to.extend(&types.ins.globals[global].data);
+        }
+
+        let data_length = to.len() - code_length - init_len;
+
+        for func in self.asm.funcs.drain(..) {
+            let fuc = &self.funcs[func];
+            for rel in &fuc.relocs {
+                let offset = match rel.target.expand() {
+                    ty::Kind::Func(fun) => self.funcs[fun].offset,
+                    ty::Kind::Global(glo) => self.globals[glo].offset,
+                    _ => unreachable!(),
+                };
+                rel.reloc.apply_jump(to, offset, fuc.offset);
+            }
+        }
+
+        AssemblySpec {
+            code_length: code_length as _,
+            data_length: data_length as _,
+            entry: self.funcs[from].offset,
+        }
+    }
+
+    fn disasm<'a>(
+        &'a self,
+        mut sluce: &[u8],
+        eca_handler: &mut dyn FnMut(&mut &[u8]),
+        types: &'a Types,
+        files: &'a [parser::Ast],
+        output: &mut String,
+    ) -> Result<(), hbbytecode::DisasmError<'a>> {
+        use hbbytecode::DisasmItem;
+        let functions = types
+            .ins
+            .funcs
+            .iter()
+            .zip(self.funcs.iter())
+            .filter(|(_, f)| f.offset != u32::MAX)
+            .map(|(f, fd)| {
+                let name = if f.file != Module::default() {
+                    let file = &files[f.file.index()];
+                    file.ident_str(f.name)
+                } else {
+                    "target_fn"
+                };
+                (fd.offset, (name, fd.code.len() as u32, DisasmItem::Func))
+            })
+            .chain(
+                types
+                    .ins
+                    .globals
+                    .iter()
+                    .zip(self.globals.iter())
+                    .filter(|(_, g)| g.offset != u32::MAX)
+                    .map(|(g, gd)| {
+                        let name = if g.file == Module::default() {
+                            core::str::from_utf8(&g.data).unwrap_or("invalid utf-8")
+                        } else {
+                            let file = &files[g.file.index()];
+                            file.ident_str(g.name)
+                        };
+                        (gd.offset, (name, g.data.len() as Size, DisasmItem::Global))
+                    }),
+            )
+            .collect::<BTreeMap<_, _>>();
+        hbbytecode::disasm(&mut sluce, &functions, output, eca_handler)
+    }
+
+    fn emit_ct_body(
+        &mut self,
+        id: ty::Func,
+        nodes: &mut Nodes,
+        tys: &Types,
+        files: &[parser::Ast],
+    ) {
+        self.emit_body(id, nodes, tys, files);
+        let fd = &mut self.funcs[id];
+        fd.code.truncate(fd.code.len() - instrs::jala(0, 0, 0).0);
+        emit(&mut fd.code, instrs::tx());
+    }
+
+    fn emit_body(&mut self, id: ty::Func, nodes: &mut Nodes, tys: &Types, files: &[parser::Ast]) {
+        let sig = tys.ins.funcs[id].sig.unwrap();
+
+        debug_assert!(self.code.is_empty());
+
+        self.offsets.clear();
+        self.offsets.resize(nodes.values.len(), Offset::MAX);
+
+        let mut stack_size = 0;
+        '_compute_stack: {
+            let mems = mem::take(&mut nodes[MEM].outputs);
+            for &stck in mems.iter() {
+                if !matches!(nodes[stck].kind, Kind::Stck | Kind::Arg) {
+                    debug_assert_matches!(
+                        nodes[stck].kind,
+                        Kind::Phi | Kind::Return | Kind::Load | Kind::Call { .. } | Kind::Stre
+                    );
+                    continue;
+                }
+                stack_size += tys.size_of(nodes[stck].ty);
+                self.offsets[stck as usize] = stack_size;
+            }
+            for &stck in mems.iter() {
+                if !matches!(nodes[stck].kind, Kind::Stck | Kind::Arg) {
+                    continue;
+                }
+                self.offsets[stck as usize] = stack_size - self.offsets[stck as usize];
+            }
+            nodes[MEM].outputs = mems;
+        }
+
+        let (saved, tail) = self.emit_body_code(nodes, sig, tys, files);
+        //let (saved, tail) = self.emit_body_code_my(nodes, sig, tys, files);
+
+        if let Some(last_ret) = self.ret_relocs.last()
+            && last_ret.offset as usize == self.code.len() - 5
+            && self
+                .jump_relocs
+                .last()
+                .map_or(true, |&(r, _)| self.offsets[r as usize] as usize != self.code.len())
+        {
+            self.code.truncate(self.code.len() - 5);
+            self.ret_relocs.pop();
+        }
+
+        // FIXME: maybe do this incrementally
+        for (nd, rel) in self.jump_relocs.drain(..) {
+            let offset = self.offsets[nd as usize];
+            //debug_assert!(offset < self.code.len() as u32 - 1);
+            rel.apply_jump(&mut self.code, offset, 0);
+        }
+
+        let end = self.code.len();
+        for ret_rel in self.ret_relocs.drain(..) {
+            ret_rel.apply_jump(&mut self.code, end as _, 0);
+        }
+
+        let mut stripped_prelude_size = 0;
+        '_close_function: {
+            let pushed = (saved as i64 + !tail as i64) * 8;
+            let stack = stack_size as i64;
+
+            let add_len = instrs::addi64(0, 0, 0).0;
+            let st_len = instrs::st(0, 0, 0, 0).0;
+
+            match (pushed, stack) {
+                (0, 0) => {
+                    stripped_prelude_size = add_len + st_len;
+                    self.code.drain(0..stripped_prelude_size);
+                    break '_close_function;
+                }
+                (0, stack) => {
+                    write_reloc(&mut self.code, 3, -stack, 8);
+                    stripped_prelude_size = st_len;
+                    let end = add_len + st_len;
+                    self.code.drain(add_len..end);
+                    self.emit(instrs::addi64(reg::STACK_PTR, reg::STACK_PTR, stack as _));
+                    break '_close_function;
+                }
+                _ => {}
+            }
+
+            write_reloc(&mut self.code, 3, -(pushed + stack), 8);
+            write_reloc(&mut self.code, 3 + 8 + 3, stack, 8);
+            write_reloc(&mut self.code, 3 + 8 + 3 + 8, pushed, 2);
+
+            self.emit(instrs::ld(
+                reg::RET_ADDR + tail as u8,
+                reg::STACK_PTR,
+                stack as _,
+                pushed as _,
+            ));
+            self.emit(instrs::addi64(reg::STACK_PTR, reg::STACK_PTR, (pushed + stack) as _));
+        }
+        self.relocs.iter_mut().for_each(|r| r.reloc.offset -= stripped_prelude_size as u32);
+        if sig.ret != ty::Id::NEVER {
+            self.emit(instrs::jala(reg::ZERO, reg::RET_ADDR, 0));
+        }
+
+        self.funcs.shadow(tys.ins.funcs.len());
+        self.funcs[id].code = mem::take(&mut self.code);
+        self.funcs[id].relocs = mem::take(&mut self.relocs);
+
+        debug_assert_eq!(self.ret_relocs.len(), 0);
+        debug_assert_eq!(self.relocs.len(), 0);
+        debug_assert_eq!(self.jump_relocs.len(), 0);
+        debug_assert_eq!(self.code.len(), 0);
+    }
+}
+
+impl Nodes {
+    fn is_never_used(&self, nid: Nid, tys: &Types) -> bool {
+        let node = &self[nid];
+        match node.kind {
+            Kind::CInt { .. } => node.outputs.iter().all(|&o| {
+                matches!(self[o].kind, Kind::BinOp { op }
+                        if op.imm_binop(self[o].ty).is_some()
+                            && self.is_const(self[o].inputs[2])
+                            && op.cond_op(self[o].ty).is_none())
+            }),
+            Kind::BinOp { op: TokenKind::Add | TokenKind::Sub } => {
+                self[node.inputs[1]].lock_rc != 0
+                    || (self.is_const(node.inputs[2])
+                        && node.outputs.iter().all(|&n| self[n].uses_direct_offset_of(nid, tys)))
+            }
+            Kind::BinOp { op } => {
+                op.cond_op(node.ty).is_some()
+                    && node.outputs.iter().all(|&n| self[n].kind == Kind::If)
+            }
+            Kind::Stck if tys.size_of(node.ty) == 0 => true,
+            Kind::Stck | Kind::Arg => node.outputs.iter().all(|&n| {
+                self[n].uses_direct_offset_of(nid, tys)
+                    || (matches!(self[n].kind, Kind::BinOp { op: TokenKind::Add })
+                        && self.is_never_used(n, tys))
+            }),
+            Kind::Load { .. } => node.ty.loc(tys) == Loc::Stack,
+            _ => false,
+        }
+    }
+}
+
+impl Node {
+    fn uses_direct_offset_of(&self, nid: Nid, tys: &Types) -> bool {
+        ((self.kind == Kind::Stre && self.inputs[2] == nid)
+            || (self.kind == Kind::Load && self.inputs[1] == nid))
+            && self.ty.loc(tys) == Loc::Reg
+    }
+}
+
+impl TokenKind {
+    fn cmp_against(self) -> Option<u64> {
+        Some(match self {
+            TokenKind::Le | TokenKind::Gt => 1,
+            TokenKind::Ne | TokenKind::Eq => 0,
+            TokenKind::Ge | TokenKind::Lt => (-1i64) as _,
+            _ => return None,
+        })
+    }
+
+    fn float_cmp(self, ty: ty::Id) -> Option<fn(u8, u8, u8) -> EncodedInstr> {
+        if !ty.is_float() {
+            return None;
+        }
+        let size = ty.simple_size().unwrap();
+
+        let ops = match self {
+            TokenKind::Gt => [instrs::fcmpgt32, instrs::fcmpgt64],
+            TokenKind::Lt => [instrs::fcmplt32, instrs::fcmplt64],
+            _ => return None,
+        };
+
+        Some(ops[size.ilog2() as usize - 2])
+    }
+
+    #[expect(clippy::type_complexity)]
+    fn cond_op(self, ty: ty::Id) -> Option<(fn(u8, u8, i16) -> EncodedInstr, bool)> {
+        if ty.is_float() {
+            return None;
+        }
+        let signed = ty.is_signed();
+        Some((
+            match self {
+                Self::Le if signed => instrs::jgts,
+                Self::Le => instrs::jgtu,
+                Self::Lt if signed => instrs::jlts,
+                Self::Lt => instrs::jltu,
+                Self::Ge if signed => instrs::jlts,
+                Self::Ge => instrs::jltu,
+                Self::Gt if signed => instrs::jgts,
+                Self::Gt => instrs::jgtu,
+                Self::Eq => instrs::jne,
+                Self::Ne => instrs::jeq,
+                _ => return None,
+            },
+            matches!(self, Self::Lt | TokenKind::Gt),
+        ))
+    }
+
+    fn binop(self, ty: ty::Id) -> Option<fn(u8, u8, u8) -> EncodedInstr> {
+        let size = ty.simple_size().unwrap();
+        if ty.is_integer() || ty == ty::Id::BOOL || ty.is_pointer() {
+            macro_rules! div { ($($op:ident),*) => {[$(|a, b, c| $op(a, 0, b, c)),*]}; }
+            macro_rules! rem { ($($op:ident),*) => {[$(|a, b, c| $op(0, a, b, c)),*]}; }
+            let signed = ty.is_signed();
+
+            let ops = match self {
+                Self::Add => [add8, add16, add32, add64],
+                Self::Sub => [sub8, sub16, sub32, sub64],
+                Self::Mul => [mul8, mul16, mul32, mul64],
+                Self::Div if signed => div!(dirs8, dirs16, dirs32, dirs64),
+                Self::Div => div!(diru8, diru16, diru32, diru64),
+                Self::Mod if signed => rem!(dirs8, dirs16, dirs32, dirs64),
+                Self::Mod => rem!(diru8, diru16, diru32, diru64),
+                Self::Band => return Some(and),
+                Self::Bor => return Some(or),
+                Self::Xor => return Some(xor),
+                Self::Shl => [slu8, slu16, slu32, slu64],
+                Self::Shr if signed => [srs8, srs16, srs32, srs64],
+                Self::Shr => [sru8, sru16, sru32, sru64],
+                _ => return None,
+            };
+
+            Some(ops[size.ilog2() as usize])
+        } else {
+            debug_assert!(ty.is_float(), "{self} {ty:?}");
+            let ops = match self {
+                Self::Add => [fadd32, fadd64],
+                Self::Sub => [fsub32, fsub64],
+                Self::Mul => [fmul32, fmul64],
+                Self::Div => [fdiv32, fdiv64],
+                _ => return None,
+            };
+            Some(ops[size.ilog2() as usize - 2])
+        }
+    }
+
+    fn imm_binop(self, ty: ty::Id) -> Option<fn(u8, u8, u64) -> EncodedInstr> {
+        macro_rules! def_op {
+            ($name:ident |$a:ident, $b:ident, $c:ident| $($tt:tt)*) => {
+                macro_rules! $name {
+                    ($$($$op:ident),*) => {
+                        [$$(
+                            |$a, $b, $c: u64| $$op($($tt)*),
+                        )*]
+                    }
+                }
+            };
+        }
+
+        if ty.is_float() {
+            return None;
+        }
+
+        def_op!(basic_op | a, b, c | a, b, c as _);
+        def_op!(sub_op | a, b, c | a, b, c.wrapping_neg() as _);
+
+        let signed = ty.is_signed();
+        let ops = match self {
+            Self::Add => basic_op!(addi8, addi16, addi32, addi64),
+            Self::Sub => sub_op!(addi8, addi16, addi32, addi64),
+            Self::Mul => basic_op!(muli8, muli16, muli32, muli64),
+            Self::Band => return Some(andi),
+            Self::Bor => return Some(ori),
+            Self::Xor => return Some(xori),
+            Self::Shr if signed => basic_op!(srui8, srui16, srui32, srui64),
+            Self::Shr => basic_op!(srui8, srui16, srui32, srui64),
+            Self::Shl => basic_op!(slui8, slui16, slui32, slui64),
+            _ => return None,
+        };
+
+        let size = ty.simple_size().unwrap();
+        Some(ops[size.ilog2() as usize])
+    }
+
+    fn unop(&self, dst: ty::Id, src: ty::Id) -> Option<fn(u8, u8) -> EncodedInstr> {
+        let src_idx = src.simple_size().unwrap().ilog2() as usize - 2;
+        Some(match self {
+            Self::Sub => instrs::neg,
+            Self::Float if dst.is_float() && src.is_integer() => {
+                debug_assert_eq!(dst.simple_size(), src.simple_size());
+                [instrs::itf32, instrs::itf64][src_idx]
+            }
+            Self::Number if src.is_float() && dst.is_integer() => {
+                [|a, b| instrs::fti32(a, b, 1), |a, b| instrs::fti64(a, b, 1)][src_idx]
+            }
+            Self::Float if dst.is_float() && src.is_float() => {
+                [instrs::fc32t64, |a, b| instrs::fc64t32(a, b, 1)][src_idx]
+            }
+            _ => return None,
+        })
+    }
+}
+
+type EncodedInstr = (usize, [u8; instrs::MAX_SIZE]);
+fn emit(out: &mut Vec<u8>, (len, instr): EncodedInstr) {
+    out.extend_from_slice(&instr[..len]);
+}
+
+fn binary_prelude(to: &mut Vec<u8>) {
+    emit(to, instrs::jal(reg::RET_ADDR, reg::ZERO, 0));
+    emit(to, instrs::tx());
+}
+
+#[derive(Default)]
+pub struct LoggedMem {
+    pub mem: hbvm::mem::HostMemory,
+    op_buf: Vec<hbbytecode::Oper>,
+    disp_buf: String,
+    prev_instr: Option<hbbytecode::Instr>,
+}
+
+impl LoggedMem {
+    unsafe fn display_instr<T>(&mut self, instr: hbbytecode::Instr, addr: hbvm::mem::Address) {
+        let novm: *const hbvm::Vm<Self, 0> = core::ptr::null();
+        let offset = core::ptr::addr_of!((*novm).memory) as usize;
+        let regs = unsafe {
+            &*core::ptr::addr_of!(
+                (*(((self as *mut _ as *mut u8).sub(offset)) as *const hbvm::Vm<Self, 0>))
+                    .registers
+            )
+        };
+
+        let mut bytes = core::slice::from_raw_parts(
+            (addr.get() - 1) as *const u8,
+            core::mem::size_of::<T>() + 1,
+        );
+        use core::fmt::Write;
+        hbbytecode::parse_args(&mut bytes, instr, &mut self.op_buf).unwrap();
+        debug_assert!(bytes.is_empty());
+        self.disp_buf.clear();
+        write!(self.disp_buf, "{:<10}", format!("{instr:?}")).unwrap();
+        for (i, op) in self.op_buf.drain(..).enumerate() {
+            if i != 0 {
+                write!(self.disp_buf, ", ").unwrap();
+            }
+            write!(self.disp_buf, "{op:?}").unwrap();
+            if let hbbytecode::Oper::R(r) = op {
+                write!(self.disp_buf, "({})", regs[r as usize].0).unwrap()
+            }
+        }
+        log::trace!("read-typed: {:x}: {}", addr.get(), self.disp_buf);
+    }
+}
+
+impl hbvm::mem::Memory for LoggedMem {
+    unsafe fn load(
+        &mut self,
+        addr: hbvm::mem::Address,
+        target: *mut u8,
+        count: usize,
+    ) -> Result<(), hbvm::mem::LoadError> {
+        log::trace!(
+            "load: {:x} {}",
+            addr.get(),
+            AsHex(core::slice::from_raw_parts(addr.get() as *const u8, count))
+        );
+        self.mem.load(addr, target, count)
+    }
+
+    unsafe fn store(
+        &mut self,
+        addr: hbvm::mem::Address,
+        source: *const u8,
+        count: usize,
+    ) -> Result<(), hbvm::mem::StoreError> {
+        log::trace!(
+            "store: {:x} {}",
+            addr.get(),
+            AsHex(core::slice::from_raw_parts(source, count))
+        );
+        self.mem.store(addr, source, count)
+    }
+
+    unsafe fn prog_read<T: Copy + 'static>(&mut self, addr: hbvm::mem::Address) -> T {
+        if log::log_enabled!(log::Level::Trace) {
+            if core::any::TypeId::of::<u8>() == core::any::TypeId::of::<T>() {
+                if let Some(instr) = self.prev_instr {
+                    self.display_instr::<()>(instr, addr);
+                }
+                self.prev_instr = hbbytecode::Instr::try_from(*(addr.get() as *const u8)).ok();
+            } else {
+                let instr = self.prev_instr.take().unwrap();
+                self.display_instr::<T>(instr, addr);
+            }
+        }
+
+        self.mem.prog_read(addr)
+    }
+}
+
+struct AsHex<'a>(&'a [u8]);
+
+impl core::fmt::Display for AsHex<'_> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        for &b in self.0 {
+            write!(f, "{b:02x}")?;
+        }
+        Ok(())
+    }
+}
+
+const VM_STACK_SIZE: usize = 1024 * 64;
+
+pub struct Comptime {
+    pub vm: hbvm::Vm<LoggedMem, { 1024 * 10 }>,
+    stack: Box<[u8; VM_STACK_SIZE]>,
+    pub code: Vec<u8>,
+    depth: usize,
+}
+
+impl Comptime {
+    pub fn run(&mut self, ret_loc: &mut [u8], offset: u32) -> u64 {
+        self.vm.write_reg(reg::RET, ret_loc.as_mut_ptr() as u64);
+        let prev_pc = self.push_pc(offset);
+        loop {
+            match self.vm.run().expect("TODO") {
+                hbvm::VmRunOk::End => break,
+                hbvm::VmRunOk::Timer => todo!(),
+                hbvm::VmRunOk::Ecall => todo!(),
+                hbvm::VmRunOk::Breakpoint => todo!(),
+            }
+        }
+        self.pop_pc(prev_pc);
+
+        if let len @ 1..=8 = ret_loc.len() {
+            ret_loc.copy_from_slice(&self.vm.read_reg(reg::RET).0.to_ne_bytes()[..len])
+        }
+
+        self.vm.read_reg(reg::RET).0
+    }
+
+    pub fn reset(&mut self) {
+        let ptr = unsafe { self.stack.as_mut_ptr().cast::<u8>().add(VM_STACK_SIZE) as u64 };
+        self.vm.registers.fill(hbvm::value::Value(0));
+        self.vm.write_reg(reg::STACK_PTR, ptr);
+        self.vm.pc = hbvm::mem::Address::new(self.code.as_ptr() as u64 + HEADER_SIZE as u64);
+    }
+
+    fn push_pc(&mut self, offset: Offset) -> hbvm::mem::Address {
+        let entry = &mut self.code[offset as usize] as *mut _ as _;
+        core::mem::replace(&mut self.vm.pc, hbvm::mem::Address::new(entry))
+            - self.code.as_ptr() as usize
+    }
+
+    fn pop_pc(&mut self, prev_pc: hbvm::mem::Address) {
+        self.vm.pc = prev_pc + self.code.as_ptr() as usize;
+    }
+
+    pub fn clear(&mut self) {
+        self.code.clear();
+    }
+
+    #[must_use]
+    pub fn active(&self) -> bool {
+        self.depth != 0
+    }
+
+    pub fn activate(&mut self) {
+        self.depth += 1;
+    }
+
+    pub fn deactivate(&mut self) {
+        self.depth -= 1;
+    }
+}
+
+impl Default for Comptime {
+    fn default() -> Self {
+        let mut stack = Box::<[u8; VM_STACK_SIZE]>::new_uninit();
+        let mut vm = hbvm::Vm::default();
+        let ptr = unsafe { stack.as_mut_ptr().cast::<u8>().add(VM_STACK_SIZE) as u64 };
+        vm.write_reg(reg::STACK_PTR, ptr);
+        Self { vm, stack: unsafe { stack.assume_init() }, code: Default::default(), depth: 0 }
+    }
+}
+
+const HEADER_SIZE: usize = core::mem::size_of::<AbleOsExecutableHeader>();
+
+#[repr(packed)]
+#[expect(dead_code)]
+pub struct AbleOsExecutableHeader {
+    magic_number: [u8; 3],
+    executable_version: u32,
+
+    code_length: u64,
+    data_length: u64,
+    debug_length: u64,
+    config_length: u64,
+    metadata_length: u64,
+}
+
+#[cfg(test)]
+pub fn test_run_vm(out: &[u8], output: &mut String) {
+    use core::fmt::Write;
+
+    let mut stack = [0_u64; 1024 * 20];
+
+    let mut vm = unsafe {
+        hbvm::Vm::<_, { 1024 * 100 }>::new(
+            LoggedMem::default(),
+            hbvm::mem::Address::new(out.as_ptr() as u64).wrapping_add(HEADER_SIZE),
+        )
+    };
+
+    vm.write_reg(reg::STACK_PTR, unsafe { stack.as_mut_ptr().add(stack.len()) } as u64);
+
+    let stat = loop {
+        match vm.run() {
+            Ok(hbvm::VmRunOk::End) => break Ok(()),
+            Ok(hbvm::VmRunOk::Ecall) => match vm.read_reg(2).0 {
+                1 => writeln!(output, "ev: Ecall").unwrap(), // compatibility with a test
+                69 => {
+                    let [size, align] = [vm.read_reg(3).0 as usize, vm.read_reg(4).0 as usize];
+                    let layout = core::alloc::Layout::from_size_align(size, align).unwrap();
+                    let ptr = unsafe { alloc::alloc::alloc(layout) };
+                    vm.write_reg(1, ptr as u64);
+                }
+                96 => {
+                    let [ptr, size, align] = [
+                        vm.read_reg(3).0 as usize,
+                        vm.read_reg(4).0 as usize,
+                        vm.read_reg(5).0 as usize,
+                    ];
+
+                    let layout = core::alloc::Layout::from_size_align(size, align).unwrap();
+                    unsafe { alloc::alloc::dealloc(ptr as *mut u8, layout) };
+                }
+                3 => vm.write_reg(1, 42),
+                8 => {}
+                unknown => writeln!(output, "unknown ecall: {unknown:?}").unwrap(),
+            },
+            Ok(hbvm::VmRunOk::Timer) => {
+                writeln!(output, "timed out").unwrap();
+                break Ok(());
+            }
+            Ok(ev) => writeln!(output, "ev: {:?}", ev).unwrap(),
+            Err(e) => break Err(e),
+        }
+    };
+
+    writeln!(output, "code size: {}", out.len() - HEADER_SIZE).unwrap();
+    writeln!(output, "ret: {:?}", vm.read_reg(1).0).unwrap();
+    writeln!(output, "status: {:?}", stat).unwrap();
+}

lang/src/son/hbvm/my_regalloc.rs

@@ -0,0 +1,903 @@
+use {
+    super::{HbvmBackend, Nid, Nodes},
+    crate::{
+        lexer::TokenKind,
+        parser,
+        reg::{self, Reg},
+        son::{debug_assert_matches, Kind, ARG_START, MEM, VOID},
+        ty::{self, Arg, Loc},
+        utils::{BitSet, Vc},
+        Offset, PLoc, Reloc, Sig, TypedReloc, Types,
+    },
+    alloc::{borrow::ToOwned, vec::Vec},
+    core::{mem, ops::Range},
+    hbbytecode::{self as instrs},
+};
+
+impl HbvmBackend {
+    pub fn emit_body_code_my(
+        &mut self,
+        nodes: &mut Nodes,
+        sig: Sig,
+        tys: &Types,
+        files: &[parser::Ast],
+    ) -> (usize, bool) {
+        let mut fuc = Function::new(nodes, tys, sig);
+        log::info!("{fuc:?}");
+
+        let mut res = mem::take(&mut self.ralloc_my);
+
+        Env::new(&fuc, &fuc.func, &mut res).run();
+
+        '_open_function: {
+            self.emit(instrs::addi64(reg::STACK_PTR, reg::STACK_PTR, 0));
+            self.emit(instrs::st(reg::RET_ADDR + fuc.tail as u8, reg::STACK_PTR, 0, 0));
+        }
+
+        let reg_offset = if fuc.tail { reg::RET + 12 } else { reg::RET_ADDR + 1 };
+
+        res.node_to_reg.iter_mut().filter(|r| **r != 0).for_each(|r| {
+            *r += reg_offset - 1;
+            if fuc.tail && *r >= reg::RET_ADDR {
+                *r += 1;
+            }
+        });
+
+        let atr = |allc: Nid| res.node_to_reg[allc as usize];
+
+        //for (id, node) in fuc.nodes.iter() {
+        //    if node.kind == Kind::Phi {
+        //        debug_assert_eq!(atr(node.inputs[1]), atr(node.inputs[2]));
+        //        debug_assert_eq!(atr(id), atr(node.inputs[2]));
+        //    }
+        //}
+
+        let (retl, mut parama) = tys.parama(sig.ret);
+        let mut typs = sig.args.args();
+        let mut args = fuc.nodes[VOID].outputs[ARG_START..].iter();
+        while let Some(aty) = typs.next(tys) {
+            let Arg::Value(ty) = aty else { continue };
+            let Some(loc) = parama.next(ty, tys) else { continue };
+            let &arg = args.next().unwrap();
+            let (rg, size) = match loc {
+                PLoc::WideReg(rg, size) => (rg, size),
+                PLoc::Reg(rg, size) if ty.loc(tys) == Loc::Stack => (rg, size),
+                PLoc::Reg(r, ..) | PLoc::Ref(r, ..) => {
+                    self.emit(instrs::cp(atr(arg), r));
+                    continue;
+                }
+            };
+            self.emit(instrs::st(rg, reg::STACK_PTR, self.offsets[arg as usize] as _, size));
+            if fuc.nodes[arg].lock_rc == 0 {
+                self.emit(instrs::addi64(rg, reg::STACK_PTR, self.offsets[arg as usize] as _));
+            }
+            self.emit(instrs::cp(atr(arg), rg));
+        }
+
+        for (i, block) in fuc.func.blocks.iter().enumerate() {
+            self.offsets[block.entry as usize] = self.code.len() as _;
+            for &nid in &fuc.func.instrs[block.range.clone()] {
+                if nid == VOID {
+                    continue;
+                }
+
+                let node = &fuc.nodes[nid];
+
+                let extend = |base: ty::Id, dest: ty::Id, from: Nid, to: Nid| {
+                    let (bsize, dsize) = (tys.size_of(base), tys.size_of(dest));
+                    debug_assert!(bsize <= 8, "{}", ty::Display::new(tys, files, base));
+                    debug_assert!(dsize <= 8, "{}", ty::Display::new(tys, files, dest));
+                    if bsize == dsize {
+                        return Default::default();
+                    }
+                    match (base.is_signed(), dest.is_signed()) {
+                        (true, true) => {
+                            let op = [instrs::sxt8, instrs::sxt16, instrs::sxt32]
+                                [bsize.ilog2() as usize];
+                            op(atr(to), atr(from))
+                        }
+                        _ => {
+                            let mask = (1u64 << (bsize * 8)) - 1;
+                            instrs::andi(atr(to), atr(from), mask)
+                        }
+                    }
+                };
+
+                match node.kind {
+                    Kind::If => {
+                        let &[_, cnd] = node.inputs.as_slice() else { unreachable!() };
+                        if let Kind::BinOp { op } = fuc.nodes[cnd].kind
+                            && let Some((op, swapped)) =
+                                op.cond_op(fuc.nodes[fuc.nodes[cnd].inputs[1]].ty)
+                        {
+                            let &[_, lhs, rhs] = fuc.nodes[cnd].inputs.as_slice() else {
+                                unreachable!()
+                            };
+
+                            self.emit(extend(fuc.nodes[lhs].ty, fuc.nodes[lhs].ty.extend(), 0, 0));
+                            self.emit(extend(fuc.nodes[rhs].ty, fuc.nodes[rhs].ty.extend(), 1, 1));
+
+                            let rel = Reloc::new(self.code.len(), 3, 2);
+                            self.jump_relocs.push((node.outputs[!swapped as usize], rel));
+                            self.emit(op(atr(lhs), atr(rhs), 0));
+                        } else {
+                            self.emit(extend(fuc.nodes[cnd].ty, fuc.nodes[cnd].ty.extend(), 0, 0));
+                            let rel = Reloc::new(self.code.len(), 3, 2);
+                            self.jump_relocs.push((node.outputs[0], rel));
+                            self.emit(instrs::jne(atr(cnd), reg::ZERO, 0));
+                        }
+                    }
+                    Kind::Loop | Kind::Region => {
+                        if (mem::replace(&mut fuc.backrefs[nid as usize], u16::MAX) != u16::MAX)
+                            ^ (node.kind == Kind::Loop)
+                        {
+                            let index = (node.kind == Kind::Loop) as usize + 1;
+                            for &out in node.outputs.iter() {
+                                if fuc.nodes[out].is_data_phi()
+                                    && atr(out) != atr(fuc.nodes[out].inputs[index])
+                                {
+                                    self.emit(instrs::cp(
+                                        atr(out),
+                                        atr(fuc.nodes[out].inputs[index]),
+                                    ));
+                                }
+                            }
+
+                            let rel = Reloc::new(self.code.len(), 1, 4);
+                            self.jump_relocs.push((nid, rel));
+                            self.emit(instrs::jmp(0));
+                        } else {
+                            let index = (node.kind != Kind::Loop) as usize + 1;
+                            for &out in node.outputs.iter() {
+                                if fuc.nodes[out].is_data_phi()
+                                    && atr(out) != atr(fuc.nodes[out].inputs[index])
+                                {
+                                    self.emit(instrs::cp(
+                                        atr(out),
+                                        atr(fuc.nodes[out].inputs[index]),
+                                    ));
+                                }
+                            }
+                        }
+                    }
+                    Kind::Return => {
+                        let &[_, mut ret, ..] = node.inputs.as_slice() else { unreachable!() };
+                        match retl {
+                            None => {}
+                            Some(PLoc::Reg(r, _)) if sig.ret.loc(tys) == Loc::Reg => {
+                                self.emit(instrs::cp(r, atr(ret)));
+                            }
+                            Some(PLoc::Reg(r, size)) | Some(PLoc::WideReg(r, size)) => {
+                                ret = match fuc.nodes[ret].kind {
+                                    Kind::Load { .. } => fuc.nodes[ret].inputs[1],
+                                    _ => ret,
+                                };
+                                self.emit(instrs::ld(r, atr(ret), 0, size))
+                            }
+                            Some(PLoc::Ref(_, size)) => {
+                                ret = match fuc.nodes[ret].kind {
+                                    Kind::Load { .. } => fuc.nodes[ret].inputs[1],
+                                    _ => ret,
+                                };
+
+                                let [src, dst] = [atr(ret), atr(MEM)];
+                                if let Ok(size) = u16::try_from(size) {
+                                    self.emit(instrs::bmc(src, dst, size));
+                                } else {
+                                    for _ in 0..size / u16::MAX as u32 {
+                                        self.emit(instrs::bmc(src, dst, u16::MAX));
+                                        self.emit(instrs::addi64(src, src, u16::MAX as _));
+                                        self.emit(instrs::addi64(dst, dst, u16::MAX as _));
+                                    }
+                                    self.emit(instrs::bmc(src, dst, size as u16));
+                                    self.emit(instrs::addi64(src, src, size.wrapping_neg() as _));
+                                    self.emit(instrs::addi64(dst, dst, size.wrapping_neg() as _));
+                                }
+                            }
+                        }
+
+                        if i != fuc.func.blocks.len() - 1 {
+                            let rel = Reloc::new(self.code.len(), 1, 4);
+                            self.ret_relocs.push(rel);
+                            self.emit(instrs::jmp(0));
+                        }
+                    }
+                    Kind::Die => self.emit(instrs::un()),
+                    Kind::CInt { value } if node.ty.is_float() => {
+                        self.emit(match node.ty {
+                            ty::Id::F32 => instrs::li32(
+                                atr(nid),
+                                (f64::from_bits(value as _) as f32).to_bits(),
+                            ),
+                            ty::Id::F64 => instrs::li64(atr(nid), value as _),
+                            _ => unreachable!(),
+                        });
+                    }
+                    Kind::CInt { value } => self.emit(match tys.size_of(node.ty) {
+                        1 => instrs::li8(atr(nid), value as _),
+                        2 => instrs::li16(atr(nid), value as _),
+                        4 => instrs::li32(atr(nid), value as _),
+                        _ => instrs::li64(atr(nid), value as _),
+                    }),
+                    Kind::UnOp { op } => {
+                        let op = op
+                            .unop(node.ty, fuc.nodes[node.inputs[1]].ty)
+                            .expect("TODO: unary operator not supported");
+                        self.emit(op(atr(nid), atr(node.inputs[1])));
+                    }
+                    Kind::BinOp { .. } if node.lock_rc != 0 => {}
+                    Kind::BinOp { op } => {
+                        let &[.., lhs, rhs] = node.inputs.as_slice() else { unreachable!() };
+
+                        if let Kind::CInt { value } = fuc.nodes[rhs].kind
+                            && fuc.nodes[rhs].lock_rc != 0
+                            && let Some(op) = op.imm_binop(node.ty)
+                        {
+                            self.emit(op(atr(nid), atr(lhs), value as _));
+                        } else if let Some(op) =
+                            op.binop(node.ty).or(op.float_cmp(fuc.nodes[lhs].ty))
+                        {
+                            self.emit(op(atr(nid), atr(lhs), atr(rhs)));
+                        } else if let Some(against) = op.cmp_against() {
+                            let op_ty = fuc.nodes[lhs].ty;
+
+                            self.emit(extend(fuc.nodes[lhs].ty, fuc.nodes[lhs].ty.extend(), 0, 0));
+                            self.emit(extend(fuc.nodes[rhs].ty, fuc.nodes[rhs].ty.extend(), 1, 1));
+
+                            if op_ty.is_float() && matches!(op, TokenKind::Le | TokenKind::Ge) {
+                                let opop = match op {
+                                    TokenKind::Le => TokenKind::Gt,
+                                    TokenKind::Ge => TokenKind::Lt,
+                                    _ => unreachable!(),
+                                };
+                                let op_fn = opop.float_cmp(op_ty).unwrap();
+                                self.emit(op_fn(atr(nid), atr(lhs), atr(rhs)));
+                                self.emit(instrs::not(atr(nid), atr(nid)));
+                            } else if op_ty.is_integer() {
+                                let op_fn =
+                                    if op_ty.is_signed() { instrs::cmps } else { instrs::cmpu };
+                                self.emit(op_fn(atr(nid), atr(lhs), atr(rhs)));
+                                self.emit(instrs::cmpui(atr(nid), atr(nid), against));
+                                if matches!(op, TokenKind::Eq | TokenKind::Lt | TokenKind::Gt) {
+                                    self.emit(instrs::not(atr(nid), atr(nid)));
+                                }
+                            } else {
+                                todo!("unhandled operator: {op}");
+                            }
+                        } else {
+                            todo!("unhandled operator: {op}");
+                        }
+                    }
+                    Kind::Call { args, func } => {
+                        let (ret, mut parama) = tys.parama(node.ty);
+                        let mut args = args.args();
+                        let mut allocs = node.inputs[1..].iter();
+                        while let Some(arg) = args.next(tys) {
+                            let Arg::Value(ty) = arg else { continue };
+                            let Some(loc) = parama.next(ty, tys) else { continue };
+
+                            let mut arg = *allocs.next().unwrap();
+                            let (rg, size) = match loc {
+                                PLoc::Reg(rg, size) if ty.loc(tys) == Loc::Stack => (rg, size),
+                                PLoc::WideReg(rg, size) => (rg, size),
+                                PLoc::Ref(r, ..) => {
+                                    arg = match fuc.nodes[arg].kind {
+                                        Kind::Load { .. } => fuc.nodes[arg].inputs[1],
+                                        _ => arg,
+                                    };
+                                    self.emit(instrs::cp(r, atr(arg)));
+                                    continue;
+                                }
+                                PLoc::Reg(r, ..) => {
+                                    self.emit(instrs::cp(r, atr(arg)));
+                                    continue;
+                                }
+                            };
+
+                            arg = match fuc.nodes[arg].kind {
+                                Kind::Load { .. } => fuc.nodes[arg].inputs[1],
+                                _ => arg,
+                            };
+                            self.emit(instrs::ld(rg, atr(arg), 0, size));
+                        }
+
+                        debug_assert!(
+                            !matches!(ret, Some(PLoc::Ref(..))) || allocs.next().is_some()
+                        );
+
+                        if func == ty::Func::ECA {
+                            self.emit(instrs::eca());
+                        } else {
+                            self.relocs.push(TypedReloc {
+                                target: ty::Kind::Func(func).compress(),
+                                reloc: Reloc::new(self.code.len(), 3, 4),
+                            });
+                            self.emit(instrs::jal(reg::RET_ADDR, reg::ZERO, 0));
+                        }
+
+                        match ret {
+                            Some(PLoc::WideReg(r, size)) => {
+                                debug_assert_eq!(
+                                    fuc.nodes[*node.inputs.last().unwrap()].kind,
+                                    Kind::Stck
+                                );
+                                let stck = self.offsets[*node.inputs.last().unwrap() as usize];
+                                self.emit(instrs::st(r, reg::STACK_PTR, stck as _, size));
+                            }
+                            Some(PLoc::Reg(r, size)) if node.ty.loc(tys) == Loc::Stack => {
+                                debug_assert_eq!(
+                                    fuc.nodes[*node.inputs.last().unwrap()].kind,
+                                    Kind::Stck
+                                );
+                                let stck = self.offsets[*node.inputs.last().unwrap() as usize];
+                                self.emit(instrs::st(r, reg::STACK_PTR, stck as _, size));
+                            }
+                            Some(PLoc::Reg(r, ..)) => self.emit(instrs::cp(atr(nid), r)),
+                            None | Some(PLoc::Ref(..)) => {}
+                        }
+                    }
+                    Kind::Global { global } => {
+                        let reloc = Reloc::new(self.code.len(), 3, 4);
+                        self.relocs.push(TypedReloc {
+                            target: ty::Kind::Global(global).compress(),
+                            reloc,
+                        });
+                        self.emit(instrs::lra(atr(nid), 0, 0));
+                    }
+                    Kind::Stck => {
+                        let base = reg::STACK_PTR;
+                        let offset = self.offsets[nid as usize];
+                        self.emit(instrs::addi64(atr(nid), base, offset as _));
+                    }
+                    Kind::Load => {
+                        let mut region = node.inputs[1];
+                        let mut offset = 0;
+                        if fuc.nodes[region].kind == (Kind::BinOp { op: TokenKind::Add })
+                            && let Kind::CInt { value } =
+                                fuc.nodes[fuc.nodes[region].inputs[2]].kind
+                        {
+                            region = fuc.nodes[region].inputs[1];
+                            offset = value as Offset;
+                        }
+                        let size = tys.size_of(node.ty);
+                        if node.ty.loc(tys) != Loc::Stack {
+                            let (base, offset) = match fuc.nodes[region].kind {
+                                Kind::Stck => {
+                                    (reg::STACK_PTR, self.offsets[region as usize] + offset)
+                                }
+                                _ => (atr(region), offset),
+                            };
+                            self.emit(instrs::ld(atr(nid), base, offset as _, size as _));
+                        }
+                    }
+                    Kind::Stre if node.inputs[1] == VOID => {}
+                    Kind::Stre => {
+                        let mut region = node.inputs[2];
+                        let mut offset = 0;
+                        let size = u16::try_from(tys.size_of(node.ty)).expect("TODO");
+                        if fuc.nodes[region].kind == (Kind::BinOp { op: TokenKind::Add })
+                            && let Kind::CInt { value } =
+                                fuc.nodes[fuc.nodes[region].inputs[2]].kind
+                            && node.ty.loc(tys) == Loc::Reg
+                        {
+                            region = fuc.nodes[region].inputs[1];
+                            offset = value as Offset;
+                        }
+                        let nd = &fuc.nodes[region];
+                        let value = node.inputs[1];
+                        let (base, offset, src) = match nd.kind {
+                            Kind::Stck if node.ty.loc(tys) == Loc::Reg => {
+                                (reg::STACK_PTR, self.offsets[region as usize] + offset, value)
+                            }
+                            _ => (atr(region), offset, match fuc.nodes[value].kind {
+                                Kind::Load { .. } => fuc.nodes[value].inputs[1],
+                                _ => value,
+                            }),
+                        };
+
+                        match node.ty.loc(tys) {
+                            Loc::Reg => self.emit(instrs::st(atr(src), base, offset as _, size)),
+                            Loc::Stack => {
+                                debug_assert_eq!(offset, 0);
+                                self.emit(instrs::bmc(atr(src), base, size))
+                            }
+                        }
+                    }
+
+                    Kind::Mem => self.emit(instrs::cp(atr(MEM), reg::RET)),
+                    Kind::Arg => {}
+                    e @ (Kind::Start
+                    | Kind::Entry
+                    | Kind::End
+                    | Kind::Loops
+                    | Kind::Then
+                    | Kind::Else
+                    | Kind::Phi
+                    | Kind::Assert { .. }) => unreachable!("{e:?}"),
+                }
+            }
+        }
+
+        self.ralloc_my = res;
+
+        let bundle_count = self.ralloc_my.bundles.len() + (reg_offset as usize);
+        (
+            if fuc.tail {
+                bundle_count.saturating_sub(reg::RET_ADDR as _)
+            } else {
+                assert!(bundle_count < reg::STACK_PTR as usize, "TODO: spill memory");
+                self.ralloc_my.bundles.len()
+            },
+            fuc.tail,
+        )
+    }
+}
+
+pub struct Function<'a> {
+    sig: Sig,
+    tail: bool,
+    backrefs: Vec<u16>,
+    nodes: &'a mut Nodes,
+    tys: &'a Types,
+    visited: BitSet,
+    func: Func,
+}
+
+impl Function<'_> {
+    fn vreg_count(&self) -> usize {
+        self.nodes.values.len()
+    }
+
+    fn uses_of(&self, nid: Nid, buf: &mut Vec<Nid>) {
+        if self.nodes[nid].kind.is_cfg() && !matches!(self.nodes[nid].kind, Kind::Call { .. }) {
+            return;
+        }
+
+        self.nodes[nid]
+            .outputs
+            .iter()
+            .filter(|&&n| self.nodes.is_data_dep(nid, n))
+            .collect_into(buf);
+    }
+
+    fn phi_inputs_of(&self, nid: Nid, buf: &mut Vec<Nid>) {
+        match self.nodes[nid].kind {
+            Kind::Region => {
+                for &inp in self.nodes[nid].outputs.as_slice() {
+                    if self.nodes[inp].is_data_phi() {
+                        buf.extend(&self.nodes[inp].inputs[1..]);
+                        buf.push(inp);
+                    }
+                }
+            }
+            Kind::Loop => {
+                for &inp in self.nodes[nid].outputs.as_slice() {
+                    if self.nodes[inp].is_data_phi() {
+                        buf.push(self.nodes[inp].inputs[1]);
+                        buf.push(inp);
+                        buf.push(self.nodes[inp].inputs[2]);
+                    }
+                }
+            }
+            _ => {}
+        }
+    }
+
+    fn instr_of(&self, nid: Nid) -> Option<Nid> {
+        if self.nodes[nid].kind == Kind::Phi || self.nodes[nid].lock_rc != 0 {
+            return None;
+        }
+        debug_assert_ne!(self.backrefs[nid as usize], Nid::MAX, "{:?}", self.nodes[nid]);
+        Some(self.backrefs[nid as usize])
+    }
+
+    fn block_of(&self, nid: Nid) -> Nid {
+        debug_assert!(self.nodes[nid].kind.starts_basic_block());
+        self.backrefs[nid as usize]
+    }
+
+    fn idom_of(&self, mut nid: Nid) -> Nid {
+        while !self.nodes[nid].kind.starts_basic_block() {
+            nid = self.nodes.idom(nid);
+        }
+        nid
+    }
+
+    fn use_block(&self, inst: Nid, uinst: Nid) -> Nid {
+        let mut block = self.nodes.use_block(inst, uinst);
+        while !self.nodes[block].kind.starts_basic_block() {
+            block = self.nodes.idom(block);
+        }
+        block
+    }
+}
+
+impl core::fmt::Debug for Function<'_> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        for block in &self.func.blocks {
+            writeln!(f, "{:?}", self.nodes[block.entry].kind)?;
+            for &instr in &self.func.instrs[block.range.clone()] {
+                writeln!(f, "{:?}", self.nodes[instr].kind)?;
+            }
+        }
+
+        Ok(())
+    }
+}
+
+impl<'a> Function<'a> {
+    fn new(nodes: &'a mut Nodes, tys: &'a Types, sig: Sig) -> Self {
+        let mut s = Self {
+            backrefs: vec![u16::MAX; nodes.values.len()],
+            tail: true,
+            nodes,
+            tys,
+            sig,
+            visited: Default::default(),
+            func: Default::default(),
+        };
+        s.visited.clear(s.nodes.values.len());
+        s.emit_node(VOID);
+        s
+    }
+
+    fn add_block(&mut self, entry: Nid) {
+        self.func
+            .blocks
+            .push(Block { range: self.func.instrs.len()..self.func.instrs.len(), entry });
+        self.backrefs[entry as usize] = self.func.blocks.len() as u16 - 1;
+    }
+
+    fn close_block(&mut self, exit: Nid) {
+        if !matches!(self.nodes[exit].kind, Kind::Loop | Kind::Region) {
+            self.add_instr(exit);
+        } else {
+            self.func.instrs.push(exit);
+        }
+        let prev = self.func.blocks.last_mut().unwrap();
+        prev.range.end = self.func.instrs.len();
+    }
+
+    fn add_instr(&mut self, nid: Nid) {
+        debug_assert_ne!(self.nodes[nid].kind, Kind::Loop);
+        self.backrefs[nid as usize] = self.func.instrs.len() as u16;
+        self.func.instrs.push(nid);
+    }
+
+    fn emit_node(&mut self, nid: Nid) {
+        if matches!(self.nodes[nid].kind, Kind::Region | Kind::Loop) {
+            match (self.nodes[nid].kind, self.visited.set(nid)) {
+                (Kind::Loop, false) | (Kind::Region, true) => {
+                    self.close_block(nid);
+                    return;
+                }
+                _ => {}
+            }
+        } else if !self.visited.set(nid) {
+            return;
+        }
+
+        if self.nodes.is_never_used(nid, self.tys) {
+            self.nodes.lock(nid);
+            return;
+        }
+
+        let mut node = self.nodes[nid].clone();
+        match node.kind {
+            Kind::Start => {
+                debug_assert_matches!(self.nodes[node.outputs[0]].kind, Kind::Entry);
+                self.add_block(VOID);
+                self.emit_node(node.outputs[0])
+            }
+            Kind::If => {
+                let &[_, cond] = node.inputs.as_slice() else { unreachable!() };
+                let &[mut then, mut else_] = node.outputs.as_slice() else { unreachable!() };
+
+                if let Kind::BinOp { op } = self.nodes[cond].kind
+                    && let Some((_, swapped)) = op.cond_op(node.ty)
+                    && swapped
+                {
+                    mem::swap(&mut then, &mut else_);
+                }
+
+                self.close_block(nid);
+                self.emit_node(then);
+                self.emit_node(else_);
+            }
+            Kind::Region | Kind::Loop => {
+                self.close_block(nid);
+                self.add_block(nid);
+                self.reschedule_block(nid, &mut node.outputs);
+                for o in node.outputs.into_iter().rev() {
+                    self.emit_node(o);
+                }
+            }
+            Kind::Return | Kind::Die => {
+                self.close_block(nid);
+                self.emit_node(node.outputs[0]);
+            }
+            Kind::Entry => {
+                let (ret, mut parama) = self.tys.parama(self.sig.ret);
+                let mut typs = self.sig.args.args();
+                #[expect(clippy::unnecessary_to_owned)]
+                let mut args = self.nodes[VOID].outputs[ARG_START..].to_owned().into_iter();
+                while let Some(ty) = typs.next_value(self.tys) {
+                    let arg = args.next().unwrap();
+                    debug_assert_eq!(self.nodes[arg].kind, Kind::Arg);
+                    match parama.next(ty, self.tys) {
+                        None => {}
+                        Some(_) => self.add_instr(arg),
+                    }
+                }
+
+                if let Some(PLoc::Ref(..)) = ret {
+                    self.add_instr(MEM);
+                }
+
+                self.reschedule_block(nid, &mut node.outputs);
+                for o in node.outputs.into_iter().rev() {
+                    self.emit_node(o);
+                }
+            }
+            Kind::Then | Kind::Else => {
+                self.add_block(nid);
+                self.reschedule_block(nid, &mut node.outputs);
+                for o in node.outputs.into_iter().rev() {
+                    self.emit_node(o);
+                }
+            }
+            Kind::Call { func, .. } => {
+                self.tail &= func == ty::Func::ECA;
+
+                self.add_instr(nid);
+
+                self.reschedule_block(nid, &mut node.outputs);
+                for o in node.outputs.into_iter().rev() {
+                    if self.nodes[o].inputs[0] == nid
+                        || (matches!(self.nodes[o].kind, Kind::Loop | Kind::Region)
+                            && self.nodes[o].inputs[1] == nid)
+                    {
+                        self.emit_node(o);
+                    }
+                }
+            }
+            Kind::CInt { .. }
+            | Kind::BinOp { .. }
+            | Kind::UnOp { .. }
+            | Kind::Global { .. }
+            | Kind::Load { .. }
+            | Kind::Stre
+            | Kind::Stck => self.add_instr(nid),
+            Kind::End | Kind::Phi | Kind::Arg | Kind::Mem | Kind::Loops => {}
+            Kind::Assert { .. } => unreachable!(),
+        }
+    }
+
+    fn reschedule_block(&mut self, from: Nid, outputs: &mut Vc) {
+        let from = Some(&from);
+        let mut buf = Vec::with_capacity(outputs.len());
+        let mut seen = BitSet::default();
+        seen.clear(self.nodes.values.len());
+
+        for &o in outputs.iter() {
+            if !self.nodes.is_cfg(o) {
+                continue;
+            }
+
+            seen.set(o);
+
+            let mut cursor = buf.len();
+            buf.push(o);
+            while let Some(&n) = buf.get(cursor) {
+                for &i in &self.nodes[n].inputs[1..] {
+                    if from == self.nodes[i].inputs.first()
+                        && self.nodes[i]
+                            .outputs
+                            .iter()
+                            .all(|&o| self.nodes[o].inputs.first() != from || seen.get(o))
+                        && seen.set(i)
+                    {
+                        buf.push(i);
+                    }
+                }
+                cursor += 1;
+            }
+        }
+
+        for &o in outputs.iter() {
+            if !seen.set(o) {
+                continue;
+            }
+            let mut cursor = buf.len();
+            buf.push(o);
+            while let Some(&n) = buf.get(cursor) {
+                for &i in &self.nodes[n].inputs[1..] {
+                    if from == self.nodes[i].inputs.first()
+                        && self.nodes[i]
+                            .outputs
+                            .iter()
+                            .all(|&o| self.nodes[o].inputs.first() != from || seen.get(o))
+                        && seen.set(i)
+                    {
+                        buf.push(i);
+                    }
+                }
+                cursor += 1;
+            }
+        }
+
+        debug_assert!(
+            outputs.len() == buf.len() || outputs.len() == buf.len() + 1,
+            "{:?} {:?}",
+            outputs,
+            buf
+        );
+
+        if buf.len() + 1 == outputs.len() {
+            outputs.remove(outputs.len() - 1);
+        }
+        outputs.copy_from_slice(&buf);
+    }
+}
+
+pub struct Env<'a> {
+    ctx: &'a Function<'a>,
+    func: &'a Func,
+    res: &'a mut Res,
+}
+
+impl<'a> Env<'a> {
+    pub fn new(ctx: &'a Function<'a>, func: &'a Func, res: &'a mut Res) -> Self {
+        Self { ctx, func, res }
+    }
+
+    pub fn run(&mut self) {
+        self.res.bundles.clear();
+        self.res.node_to_reg.clear();
+        self.res.node_to_reg.resize(self.ctx.vreg_count(), 0);
+
+        debug_assert!(self.res.dfs_buf.is_empty());
+        debug_assert!(self.res.use_buf.is_empty());
+        debug_assert!(self.res.phi_input_buf.is_empty());
+
+        let mut bundle = Bundle::new(self.func.instrs.len());
+        let mut visited = BitSet::with_capacity(self.ctx.nodes.values.len());
+        let mut use_buf = mem::take(&mut self.res.use_buf);
+
+        let mut phi_input_buf = mem::take(&mut self.res.phi_input_buf);
+        for block in &self.func.blocks {
+            self.ctx.phi_inputs_of(block.entry, &mut phi_input_buf);
+            for param in phi_input_buf.drain(..) {
+                if !visited.set(param) {
+                    continue;
+                }
+                self.append_bundle(param, &mut bundle, &mut use_buf);
+            }
+        }
+        self.res.phi_input_buf = phi_input_buf;
+
+        for &inst in &self.func.instrs {
+            if visited.get(inst) || inst == 0 {
+                continue;
+            }
+            self.append_bundle(inst, &mut bundle, &mut use_buf);
+        }
+
+        self.res.use_buf = use_buf;
+    }
+
+    fn append_bundle(&mut self, inst: Nid, bundle: &mut Bundle, use_buf: &mut Vec<Nid>) {
+        let mut dom = self.ctx.idom_of(inst);
+        if self.ctx.nodes[dom].kind == Kind::Loop && self.ctx.nodes[inst].kind == Kind::Phi {
+            dom = self.ctx.nodes.idom(dom);
+            dom = self.ctx.idom_of(dom);
+        }
+        self.ctx.uses_of(inst, use_buf);
+        for uinst in use_buf.drain(..) {
+            let cursor = self.ctx.use_block(inst, uinst);
+            self.reverse_cfg_dfs(cursor, dom, |_, n, b| {
+                let mut range = b.range.clone();
+                range.start =
+                    range.start.max(self.ctx.instr_of(inst).map_or(0, |n| n + 1) as usize);
+                range.end = range.end.min(
+                    self.ctx
+                        .instr_of(uinst)
+                        .filter(|_| self.ctx.nodes.loop_depth(dom) == self.ctx.nodes.loop_depth(n))
+                        .map_or(Nid::MAX, |n| n + 1) as usize,
+                );
+
+                bundle.add(range);
+            });
+        }
+
+        match self.res.bundles.iter_mut().enumerate().find(|(_, b)| !b.overlaps(bundle)) {
+            Some((i, other)) => {
+                other.merge(bundle);
+                bundle.clear();
+                self.res.node_to_reg[inst as usize] = i as Reg + 1;
+            }
+            None => {
+                self.res.bundles.push(mem::replace(bundle, Bundle::new(self.func.instrs.len())));
+                self.res.node_to_reg[inst as usize] = self.res.bundles.len() as Reg;
+            }
+        }
+    }
+
+    fn reverse_cfg_dfs(
+        &mut self,
+        from: Nid,
+        until: Nid,
+        mut each: impl FnMut(&mut Self, Nid, &Block),
+    ) {
+        debug_assert!(self.res.dfs_buf.is_empty());
+        self.res.dfs_buf.push(from);
+        self.res.dfs_seem.clear(self.ctx.nodes.values.len());
+
+        while let Some(nid) = self.res.dfs_buf.pop() {
+            each(self, nid, &self.func.blocks[self.ctx.block_of(nid) as usize]);
+            if nid == until {
+                continue;
+            }
+            match self.ctx.nodes[nid].kind {
+                Kind::Then | Kind::Else | Kind::Region | Kind::Loop => {
+                    for &n in self.ctx.nodes[nid].inputs.iter() {
+                        let d = self.ctx.idom_of(n);
+                        if self.res.dfs_seem.set(d) {
+                            self.res.dfs_buf.push(d);
+                        }
+                    }
+                }
+                Kind::Start => {}
+                _ => unreachable!(),
+            }
+        }
+    }
+}
+
+#[derive(Default)]
+pub struct Res {
+    pub bundles: Vec<Bundle>,
+    pub node_to_reg: Vec<Reg>,
+    use_buf: Vec<Nid>,
+    phi_input_buf: Vec<Nid>,
+    dfs_buf: Vec<Nid>,
+    dfs_seem: BitSet,
+}
+
+pub struct Bundle {
+    taken: Vec<bool>,
+}
+
+impl Bundle {
+    fn new(size: usize) -> Self {
+        Self { taken: vec![false; size] }
+    }
+
+    fn add(&mut self, range: Range<usize>) {
+        self.taken[range].fill(true);
+    }
+
+    fn overlaps(&self, other: &Self) -> bool {
+        self.taken.iter().zip(other.taken.iter()).any(|(a, b)| a & b)
+    }
+
+    fn merge(&mut self, other: &Self) {
+        debug_assert!(!self.overlaps(other));
+        self.taken.iter_mut().zip(other.taken.iter()).for_each(|(a, b)| *a |= *b);
+    }
+
+    fn clear(&mut self) {
+        self.taken.fill(false);
+    }
+}
+
+#[derive(Default)]
+pub struct Func {
+    pub blocks: Vec<Block>,
+    pub instrs: Vec<Nid>,
+}
+
+pub struct Block {
+    pub range: Range<usize>,
+    pub entry: Nid,
+}

lang/src/utils.rs

@@ -0,0 +1,629 @@
+#![expect(dead_code)]
+use {
+    alloc::alloc,
+    core::{
+        alloc::Layout,
+        fmt::Debug,
+        hint::unreachable_unchecked,
+        marker::PhantomData,
+        mem::MaybeUninit,
+        ops::{Deref, DerefMut, Not},
+        ptr::Unique,
+    },
+};
+
+type Nid = u16;
+
+pub union BitSet {
+    inline: usize,
+    alloced: Unique<AllocedBitSet>,
+}
+
+impl Debug for BitSet {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        f.debug_list().entries(self.iter()).finish()
+    }
+}
+
+impl Clone for BitSet {
+    fn clone(&self) -> Self {
+        if self.is_inline() {
+            Self { inline: unsafe { self.inline } }
+        } else {
+            let (data, _) = self.data_and_len();
+            let (layout, _) = Self::layout(data.len());
+            unsafe {
+                let ptr = alloc::alloc(layout);
+                ptr.copy_from_nonoverlapping(self.alloced.as_ptr() as _, layout.size());
+                Self { alloced: Unique::new_unchecked(ptr as _) }
+            }
+        }
+    }
+}
+
+impl Drop for BitSet {
+    fn drop(&mut self) {
+        if !self.is_inline() {
+            unsafe {
+                let cap = self.alloced.as_ref().cap;
+                alloc::dealloc(self.alloced.as_ptr() as _, Self::layout(cap).0);
+            }
+        }
+    }
+}
+
+impl Default for BitSet {
+    fn default() -> Self {
+        Self { inline: Self::FLAG }
+    }
+}
+
+impl BitSet {
+    const FLAG: usize = 1 << (Self::UNIT - 1);
+    const INLINE_ELEMS: usize = Self::UNIT - 1;
+    const UNIT: usize = core::mem::size_of::<usize>() * 8;
+
+    pub fn with_capacity(len: usize) -> Self {
+        let mut s = Self::default();
+        s.reserve(len);
+        s
+    }
+
+    fn is_inline(&self) -> bool {
+        unsafe { self.inline & Self::FLAG != 0 }
+    }
+
+    fn data_and_len(&self) -> (&[usize], usize) {
+        unsafe {
+            if self.is_inline() {
+                (core::slice::from_ref(&self.inline), Self::INLINE_ELEMS)
+            } else {
+                let small_vec = self.alloced.as_ref();
+                (
+                    core::slice::from_raw_parts(
+                        &small_vec.data as *const _ as *const usize,
+                        small_vec.cap,
+                    ),
+                    small_vec.cap * core::mem::size_of::<usize>() * 8,
+                )
+            }
+        }
+    }
+
+    fn data_mut_and_len(&mut self) -> (&mut [usize], usize) {
+        unsafe {
+            if self.is_inline() {
+                (core::slice::from_mut(&mut self.inline), INLINE_ELEMS)
+            } else {
+                let small_vec = self.alloced.as_mut();
+                (
+                    core::slice::from_raw_parts_mut(
+                        &mut small_vec.data as *mut _ as *mut usize,
+                        small_vec.cap,
+                    ),
+                    small_vec.cap * Self::UNIT,
+                )
+            }
+        }
+    }
+
+    fn indexes(index: usize) -> (usize, usize) {
+        (index / Self::UNIT, index % Self::UNIT)
+    }
+
+    pub fn get(&self, index: Nid) -> bool {
+        let index = index as usize;
+        let (data, len) = self.data_and_len();
+        if index >= len {
+            return false;
+        }
+        let (elem, bit) = Self::indexes(index);
+        (unsafe { *data.get_unchecked(elem) }) & (1 << bit) != 0
+    }
+
+    pub fn set(&mut self, index: Nid) -> bool {
+        let index = index as usize;
+        let (mut data, len) = self.data_mut_and_len();
+        if core::intrinsics::unlikely(index >= len) {
+            self.grow(index.next_power_of_two().max(4 * Self::UNIT));
+            (data, _) = self.data_mut_and_len();
+        }
+
+        let (elem, bit) = Self::indexes(index);
+        let elem = unsafe { data.get_unchecked_mut(elem) };
+        let prev = *elem;
+        *elem |= 1 << bit;
+        *elem != prev
+    }
+
+    fn grow(&mut self, size: usize) {
+        debug_assert!(size.is_power_of_two());
+        let slot_count = size / Self::UNIT;
+        let (layout, off) = Self::layout(slot_count);
+        let (ptr, prev_len) = unsafe {
+            if self.is_inline() {
+                let ptr = alloc::alloc(layout);
+                *ptr.add(off).cast::<usize>() = self.inline & !Self::FLAG;
+                (ptr, 1)
+            } else {
+                let prev_len = self.alloced.as_ref().cap;
+                let (prev_layout, _) = Self::layout(prev_len);
+                (alloc::realloc(self.alloced.as_ptr() as _, prev_layout, layout.size()), prev_len)
+            }
+        };
+        unsafe {
+            MaybeUninit::fill(
+                core::slice::from_raw_parts_mut(
+                    ptr.add(off).cast::<MaybeUninit<usize>>().add(prev_len),
+                    slot_count - prev_len,
+                ),
+                0,
+            );
+            *ptr.cast::<usize>() = slot_count;
+            core::ptr::write(self, Self { alloced: Unique::new_unchecked(ptr as _) });
+        }
+    }
+
+    fn layout(slot_count: usize) -> (core::alloc::Layout, usize) {
+        unsafe {
+            core::alloc::Layout::new::<AllocedBitSet>()
+                .extend(Layout::array::<usize>(slot_count).unwrap_unchecked())
+                .unwrap_unchecked()
+        }
+    }
+
+    pub fn iter(&self) -> BitSetIter {
+        if self.is_inline() {
+            BitSetIter { index: 0, current: unsafe { self.inline & !Self::FLAG }, remining: &[] }
+        } else {
+            let &[current, ref remining @ ..] = self.data_and_len().0 else {
+                unsafe { unreachable_unchecked() }
+            };
+            BitSetIter { index: 0, current, remining }
+        }
+    }
+
+    pub fn clear(&mut self, len: usize) {
+        self.reserve(len);
+        if self.is_inline() {
+            unsafe { self.inline &= Self::FLAG };
+        } else {
+            self.data_mut_and_len().0.fill(0);
+        }
+    }
+
+    pub fn units<'a>(&'a self, slot: &'a mut usize) -> &'a [usize] {
+        if self.is_inline() {
+            *slot = unsafe { self.inline } & !Self::FLAG;
+            core::slice::from_ref(slot)
+        } else {
+            self.data_and_len().0
+        }
+    }
+
+    pub fn reserve(&mut self, len: usize) {
+        if len > self.data_and_len().1 {
+            self.grow(len.next_power_of_two().max(4 * Self::UNIT));
+        }
+    }
+
+    pub fn units_mut(&mut self) -> Result<&mut [usize], &mut InlineBitSetView> {
+        if self.is_inline() {
+            Err(unsafe {
+                core::mem::transmute::<&mut usize, &mut InlineBitSetView>(&mut self.inline)
+            })
+        } else {
+            Ok(self.data_mut_and_len().0)
+        }
+    }
+}
+
+pub struct InlineBitSetView(usize);
+
+impl InlineBitSetView {
+    pub(crate) fn add_mask(&mut self, tmp: usize) {
+        debug_assert!(tmp & BitSet::FLAG == 0);
+        self.0 |= tmp;
+    }
+}
+
+pub struct BitSetIter<'a> {
+    index: usize,
+    current: usize,
+    remining: &'a [usize],
+}
+
+impl Iterator for BitSetIter<'_> {
+    type Item = usize;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        while self.current == 0 {
+            self.current = *self.remining.take_first()?;
+            self.index += 1;
+        }
+
+        let sub_idx = self.current.trailing_zeros() as usize;
+        self.current &= self.current - 1;
+        Some(self.index * BitSet::UNIT + sub_idx)
+    }
+}
+
+struct AllocedBitSet {
+    cap: usize,
+    data: [usize; 0],
+}
+
+#[cfg(test)]
+#[test]
+fn test_small_bit_set() {
+    use std::vec::Vec;
+
+    let mut sv = BitSet::default();
+
+    sv.set(10);
+    debug_assert!(sv.get(10));
+    sv.set(100);
+    debug_assert!(sv.get(100));
+    sv.set(10000);
+    debug_assert!(sv.get(10000));
+    debug_assert_eq!(sv.iter().collect::<Vec<_>>(), &[10, 100, 10000]);
+    sv.clear(10000);
+    debug_assert_eq!(sv.iter().collect::<Vec<_>>(), &[]);
+}
+
+pub union Vc {
+    inline: InlineVc,
+    alloced: AllocedVc,
+}
+
+impl Default for Vc {
+    fn default() -> Self {
+        Vc { inline: InlineVc { elems: MaybeUninit::uninit(), cap: Default::default() } }
+    }
+}
+
+impl Debug for Vc {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        self.as_slice().fmt(f)
+    }
+}
+
+impl FromIterator<Nid> for Vc {
+    fn from_iter<T: IntoIterator<Item = Nid>>(iter: T) -> Self {
+        let mut slf = Self::default();
+        for i in iter {
+            slf.push(i);
+        }
+        slf
+    }
+}
+
+const INLINE_ELEMS: usize = VC_SIZE / 2 - 1;
+const VC_SIZE: usize = 16;
+
+impl Vc {
+    fn is_inline(&self) -> bool {
+        unsafe { self.inline.cap <= INLINE_ELEMS as Nid }
+    }
+
+    fn layout(&self) -> Option<core::alloc::Layout> {
+        unsafe {
+            self.is_inline().not().then(|| {
+                core::alloc::Layout::array::<Nid>(self.alloced.cap as _).unwrap_unchecked()
+            })
+        }
+    }
+
+    pub fn len(&self) -> usize {
+        unsafe {
+            if self.is_inline() {
+                self.inline.cap as _
+            } else {
+                self.alloced.len as _
+            }
+        }
+    }
+
+    fn len_mut(&mut self) -> &mut Nid {
+        unsafe {
+            if self.is_inline() {
+                &mut self.inline.cap
+            } else {
+                &mut self.alloced.len
+            }
+        }
+    }
+
+    fn as_ptr(&self) -> *const Nid {
+        unsafe {
+            match self.is_inline() {
+                true => self.inline.elems.as_ptr().cast(),
+                false => self.alloced.base.as_ptr(),
+            }
+        }
+    }
+
+    fn as_mut_ptr(&mut self) -> *mut Nid {
+        unsafe {
+            match self.is_inline() {
+                true => self.inline.elems.as_mut_ptr().cast(),
+                false => self.alloced.base.as_ptr(),
+            }
+        }
+    }
+
+    pub fn as_slice(&self) -> &[Nid] {
+        unsafe { core::slice::from_raw_parts(self.as_ptr(), self.len()) }
+    }
+
+    fn as_slice_mut(&mut self) -> &mut [Nid] {
+        unsafe { core::slice::from_raw_parts_mut(self.as_mut_ptr(), self.len()) }
+    }
+
+    pub fn push(&mut self, value: Nid) {
+        if let Some(layout) = self.layout()
+            && unsafe { self.alloced.len == self.alloced.cap }
+        {
+            unsafe {
+                self.alloced.cap *= 2;
+                self.alloced.base = Unique::new_unchecked(
+                    alloc::realloc(
+                        self.alloced.base.as_ptr().cast(),
+                        layout,
+                        self.alloced.cap as usize * core::mem::size_of::<Nid>(),
+                    )
+                    .cast(),
+                );
+            }
+        } else if self.len() == INLINE_ELEMS {
+            unsafe {
+                let mut allcd =
+                    Self::alloc((self.inline.cap + 1).next_power_of_two() as _, self.len());
+                core::ptr::copy_nonoverlapping(self.as_ptr(), allcd.as_mut_ptr(), self.len());
+                *self = allcd;
+            }
+        }
+
+        unsafe {
+            *self.len_mut() += 1;
+            self.as_mut_ptr().add(self.len() - 1).write(value);
+        }
+    }
+
+    unsafe fn alloc(cap: usize, len: usize) -> Self {
+        debug_assert!(cap > INLINE_ELEMS);
+        let layout = unsafe { core::alloc::Layout::array::<Nid>(cap).unwrap_unchecked() };
+        let alloc = unsafe { alloc::alloc(layout) };
+        unsafe {
+            Vc {
+                alloced: AllocedVc {
+                    base: Unique::new_unchecked(alloc.cast()),
+                    len: len as _,
+                    cap: cap as _,
+                },
+            }
+        }
+    }
+
+    pub fn swap_remove(&mut self, index: usize) {
+        let len = self.len() - 1;
+        self.as_slice_mut().swap(index, len);
+        *self.len_mut() -= 1;
+    }
+
+    pub fn remove(&mut self, index: usize) {
+        self.as_slice_mut().copy_within(index + 1.., index);
+        *self.len_mut() -= 1;
+    }
+}
+
+impl Drop for Vc {
+    fn drop(&mut self) {
+        if let Some(layout) = self.layout() {
+            unsafe {
+                alloc::dealloc(self.alloced.base.as_ptr().cast(), layout);
+            }
+        }
+    }
+}
+
+impl Clone for Vc {
+    fn clone(&self) -> Self {
+        self.as_slice().into()
+    }
+}
+
+impl IntoIterator for Vc {
+    type IntoIter = VcIntoIter;
+    type Item = Nid;
+
+    fn into_iter(self) -> Self::IntoIter {
+        VcIntoIter { start: 0, end: self.len(), vc: self }
+    }
+}
+
+pub struct VcIntoIter {
+    start: usize,
+    end: usize,
+    vc: Vc,
+}
+
+impl Iterator for VcIntoIter {
+    type Item = Nid;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.start == self.end {
+            return None;
+        }
+
+        let ret = unsafe { core::ptr::read(self.vc.as_slice().get_unchecked(self.start)) };
+        self.start += 1;
+        Some(ret)
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        let len = self.end - self.start;
+        (len, Some(len))
+    }
+}
+
+impl DoubleEndedIterator for VcIntoIter {
+    fn next_back(&mut self) -> Option<Self::Item> {
+        if self.start == self.end {
+            return None;
+        }
+
+        self.end -= 1;
+        Some(unsafe { core::ptr::read(self.vc.as_slice().get_unchecked(self.end)) })
+    }
+}
+
+impl ExactSizeIterator for VcIntoIter {}
+
+impl<const SIZE: usize> From<[Nid; SIZE]> for Vc {
+    fn from(value: [Nid; SIZE]) -> Self {
+        value.as_slice().into()
+    }
+}
+
+impl<'a> From<&'a [Nid]> for Vc {
+    fn from(value: &'a [Nid]) -> Self {
+        if value.len() <= INLINE_ELEMS {
+            let mut dflt = Self::default();
+            unsafe {
+                core::ptr::copy_nonoverlapping(value.as_ptr(), dflt.as_mut_ptr(), value.len())
+            };
+            dflt.inline.cap = value.len() as _;
+            dflt
+        } else {
+            let mut allcd = unsafe { Self::alloc(value.len(), value.len()) };
+            unsafe {
+                core::ptr::copy_nonoverlapping(value.as_ptr(), allcd.as_mut_ptr(), value.len())
+            };
+            allcd
+        }
+    }
+}
+
+impl Deref for Vc {
+    type Target = [Nid];
+
+    fn deref(&self) -> &Self::Target {
+        self.as_slice()
+    }
+}
+
+impl DerefMut for Vc {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.as_slice_mut()
+    }
+}
+
+#[derive(Clone, Copy)]
+#[repr(C)]
+struct InlineVc {
+    cap: Nid,
+    elems: MaybeUninit<[Nid; INLINE_ELEMS]>,
+}
+
+#[derive(Clone, Copy)]
+#[repr(C)]
+struct AllocedVc {
+    cap: Nid,
+    len: Nid,
+    base: Unique<Nid>,
+}
+
+pub trait Ent: Copy {
+    fn new(index: usize) -> Self;
+    fn index(self) -> usize;
+}
+
+pub struct EntVec<K: Ent, T> {
+    data: ::alloc::vec::Vec<T>,
+    k: PhantomData<fn(K)>,
+}
+
+impl<K: Ent, T> Default for EntVec<K, T> {
+    fn default() -> Self {
+        Self { data: Default::default(), k: PhantomData }
+    }
+}
+
+impl<K: Ent, T> EntVec<K, T> {
+    pub fn clear(&mut self) {
+        self.data.clear();
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.data.is_empty()
+    }
+
+    pub fn len(&self) -> usize {
+        self.data.len()
+    }
+
+    pub fn push(&mut self, value: T) -> K {
+        let k = K::new(self.data.len());
+        self.data.push(value);
+        k
+    }
+
+    pub fn next(&self, index: K) -> Option<&T> {
+        self.data.get(index.index() + 1)
+    }
+
+    pub fn shadow(&mut self, len: usize)
+    where
+        T: Default,
+    {
+        if self.data.len() < len {
+            self.data.resize_with(len, Default::default);
+        }
+    }
+
+    pub fn iter(&self) -> core::slice::Iter<T> {
+        self.data.iter()
+    }
+}
+
+impl<K: Ent, T> core::ops::Index<K> for EntVec<K, T> {
+    type Output = T;
+
+    fn index(&self, index: K) -> &Self::Output {
+        &self.data[index.index()]
+    }
+}
+
+impl<K: Ent, T> core::ops::IndexMut<K> for EntVec<K, T> {
+    fn index_mut(&mut self, index: K) -> &mut Self::Output {
+        &mut self.data[index.index()]
+    }
+}
+
+macro_rules! decl_ent {
+    ($(
+        $vis:vis struct $name:ident($index:ty);
+    )*) => {$(
+        #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
+        $vis struct $name($index);
+
+        impl crate::utils::Ent for $name {
+            fn new(index: usize) -> Self {
+                Self(index as $index)
+            }
+
+            fn index(self) -> usize {
+                self.0 as _
+            }
+        }
+
+
+        impl core::fmt::Display for $name {
+            fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+                write!(f, concat!(stringify!($name), "{}"), self.0)
+            }
+        }
+    )*};
+}
+pub(crate) use decl_ent;

lang/tests/son_tests_advanced_floating_point_arithmetic.txt

@@ -0,0 +1,44 @@
+main:
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
+    LI32 r32, 1148846080w
+    CP r2, r32
+    JAL r31, r0, :sin
+    FMUL32 r33, r1, r32
+    FTI32 r1, r33, 1b
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
+    JALA r0, r31, 0a
+sin:
+    LI32 r4, 1124073472w
+    LI32 r5, 1078530011w
+    FMUL32 r7, r2, r4
+    FDIV32 r9, r7, r5
+    FTI32 r11, r9, 1b
+    ANDI r10, r11, 255d
+    ITF64 r5, r11
+    MULI64 r4, r10, 4d
+    LRA r3, r0, :SIN_TABLE
+    LI32 r7, 1086918619w
+    FC64T32 r9, r5, 1b
+    ADDI64 r5, r11, 64d
+    ADD64 r8, r3, r4
+    LI32 r1, 1132462080w
+    FMUL32 r6, r9, r7
+    ANDI r7, r5, 255d
+    LI32 r5, 1056964608w
+    LD r4, r8, 0a, 4h
+    FDIV32 r8, r6, r1
+    MULI64 r6, r7, 4d
+    FMUL32 r10, r4, r5
+    FSUB32 r11, r2, r8
+    ADD64 r9, r3, r6
+    FMUL32 r2, r11, r10
+    LD r12, r9, 0a, 4h
+    FSUB32 r5, r12, r2
+    FMUL32 r7, r5, r11
+    FADD32 r1, r4, r7
+    JALA r0, r31, 0a
+code size: 1303
+ret: 826
+status: Ok(())

lang/tests/son_tests_aliasing_overoptimization.txt

@@ -0,0 +1,6 @@
+main:
+    LI64 r1, 0d
+    JALA r0, r31, 0a
+code size: 29
+ret: 0
+status: Ok(())

lang/tests/son_tests_arithmetic.txt

@@ -0,0 +1,6 @@
+main:
+    LI64 r1, 0d
+    JALA r0, r31, 0a
+code size: 29
+ret: 0
+status: Ok(())

lang/tests/son_tests_arrays.txt

@@ -0,0 +1,27 @@
+main:
+    ADDI64 r254, r254, -56d
+    ST r31, r254, 24a, 32h
+    LI64 r32, 1d
+    ADDI64 r2, r254, 0d
+    ST r32, r254, 0a, 8h
+    LI64 r33, 2d
+    ST r33, r254, 8a, 8h
+    LI64 r34, 4d
+    ST r34, r254, 16a, 8h
+    JAL r31, r0, :pass
+    ADD64 r1, r1, r32
+    LD r31, r254, 24a, 32h
+    ADDI64 r254, r254, 56d
+    JALA r0, r31, 0a
+pass:
+    LD r4, r2, 8a, 8h
+    MULI64 r7, r4, 8d
+    LD r5, r2, 0a, 8h
+    ADD64 r10, r7, r2
+    ADD64 r9, r4, r5
+    LD r1, r10, 0a, 8h
+    ADD64 r1, r1, r9
+    JALA r0, r31, 0a
+code size: 231
+ret: 8
+status: Ok(())

lang/tests/son_tests_big_array_crash.txt

@@ -0,0 +1,7 @@
+main:
+    LRA r1, r0, :SIN_TABLE
+    LD r1, r1, 80a, 8h
+    JALA r0, r31, 0a
+code size: 767
+ret: 1736
+status: Ok(())

lang/tests/son_tests_branch_assignments.txt

@@ -0,0 +1,13 @@
+main:
+    LI64 r1, 1d
+    JNE r2, r1, :0
+    JMP :1
+ 0: LI64 r7, 0d
+    JNE r2, r7, :2
+    LI64 r1, 2d
+    JMP :1
+ 2: LI64 r1, 3d
+ 1: JALA r0, r31, 0a
+code size: 79
+ret: 2
+status: Ok(())