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structs work with optimizations

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Jakub Doka 2024-10-17 22:29:09 +02:00
parent 11f6537a09
commit 4336fec653
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GPG key ID: C6E9A89936B8C143
6 changed files with 285 additions and 235 deletions
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5
lang/README.md
View file

@ -174,7 +174,7 @@ main := fn(): int {
return 9001
}
finst := Ty2.{ty: .{a: @bitcast(@sizeof(u32)), b: 1}, c: 3}
finst := Ty2.{ty: .{a: 4, b: 1}, c: 3}
inst := odher_pass(finst)
if inst.c == 3 {
return pass(&inst.ty)
@ -183,8 +183,7 @@ main := fn(): int {
}
pass := fn(t: ^Ty): int {
.{a, b} := *t
return a - b
return t.a - t.b
}
odher_pass := fn(t: Ty2): Ty2 {

1
lang/src/lib.rs
View file

@ -1214,7 +1214,6 @@ impl Types {
}
#[cfg_attr(not(feature = "opts"), expect(dead_code))]
#[expect(dead_code)]
fn find_struct_field(&self, s: ty::Struct, name: &str) -> Option<usize> {
let name = self.names.project(name)?;
self.struct_fields(s).iter().position(|f| f.name == name)

400
lang/src/son.rs
View file

@ -12,7 +12,7 @@ use {
reg, task,
ty::{self},
vc::{BitSet, Vc},
Func, HashMap, Offset, Reloc, Sig, Size, SymKey, TypedReloc, Types,
Func, HashMap, Offset, OffsetIter, Reloc, Sig, SymKey, TypedReloc, Types,
},
alloc::{borrow::ToOwned, string::String, vec::Vec},
core::{
@ -567,30 +567,28 @@ impl Nodes {
target
}
fn load_loop_value(&mut self, index: usize, value: &mut Nid, loops: &mut [Loop]) {
if *value != 0 {
fn load_loop_value(&mut self, index: usize, value: &mut Value, loops: &mut [Loop]) {
if value.id != 0 {
debug_assert!(!value.var);
return;
}
let [loob, loops @ ..] = loops else { unreachable!() };
let lvalue = &mut loob.scope[index].value;
self.load_loop_value(index, &mut lvalue.id, loops);
self.load_loop_value(index, lvalue, loops);
if !self[lvalue.id].is_lazy_phi() {
self.unlock(*value);
self.unlock(value.id);
let inps = [loob.node, lvalue.id, VOID];
self.unlock(inps[1]);
let ty = self[inps[1]].ty;
let phi = self.new_node_nop(ty, Kind::Phi, inps);
self[phi].lock_rc += 2;
*value = phi;
lvalue.id = phi;
self.unlock(lvalue.id);
lvalue.id = self.new_node_nop(lvalue.ty, Kind::Phi, inps);
self[lvalue.id].lock_rc += 2;
} else {
self.lock(lvalue.id);
self.unlock(*value);
*value = lvalue.id;
self.unlock(value.id);
}
*value = *lvalue;
}
fn check_dominance(&mut self, nd: Nid, min: Nid, check_outputs: bool) {
@ -789,13 +787,6 @@ struct Variable {
value: Value,
}
#[derive(PartialEq, Eq, Clone, Copy, Debug)]
struct MemKey {
region: Nid,
offset: u32,
node: Nid,
}
#[derive(Default)]
struct ItemCtx {
file: FileId,
@ -813,7 +804,8 @@ struct ItemCtx {
loops: Vec<Loop>,
vars: Vec<Variable>,
memories: Vec<MemKey>,
store: Option<Nid>,
loads: Vec<Nid>,
clobbered: Vec<Nid>,
ret_relocs: Vec<Reloc>,
relocs: Vec<TypedReloc>,
@ -899,7 +891,11 @@ impl Value {
}
pub fn var(id: usize) -> Self {
Self { id: id as Nid, var: true, ..Default::default() }
Self { id: u16::MAX - (id as Nid), var: true, ..Default::default() }
}
pub fn ptr(id: Nid) -> Self {
Self { id, ptr: true, ..Default::default() }
}
#[inline(always)]
@ -908,7 +904,6 @@ impl Value {
}
#[inline(always)]
#[expect(dead_code)]
pub fn off(self, off: Offset) -> Self {
Self { off, ..self }
}
@ -964,56 +959,36 @@ impl Codegen {
log::info!("{out}");
}
fn region_range(&self, region: Nid, offset: Offset, size: Size) -> core::ops::Range<usize> {
let start = self
.ci
.memories
.binary_search_by_key(&(region, offset), |k| (k.region, k.offset))
.unwrap_or_else(core::convert::identity);
let end = self
.ci
.memories
.binary_search_by(|k| (k.region, k.offset).cmp(&(region, offset + size)))
.unwrap_or_else(core::convert::identity);
start..end
}
fn mem_op(&mut self, region: Nid, offset: Offset, kind: Kind, ty: ty::Id, mut inps: Vc) -> Nid {
let size = self.tys.size_of(ty);
let range = self.region_range(region, offset, size);
for mk in &self.ci.memories[range.clone()] {
debug_assert_eq!(mk.region, region);
debug_assert!(mk.offset >= offset);
debug_assert!(mk.offset < offset + size);
inps.push(mk.node);
}
if range.is_empty() {
inps.push(region);
}
let (new_op, peeped) = self.ci.nodes.new_node_low(ty, kind, inps);
if !peeped {
for mk in &self.ci.memories[range.clone()] {
self.ci.nodes.unlock(mk.node);
}
self.ci
.memories
.splice(range, core::iter::once(MemKey { node: new_op, region, offset }));
self.ci.nodes.lock(new_op);
}
new_op
}
fn store_mem(&mut self, region: Nid, offset: Offset, value: Nid) -> Nid {
self.mem_op(region, offset, Kind::Stre { offset }, self.tof(value), [VOID, value].into())
let mut vc = Vc::from([VOID, value, region]);
if let Some(str) = self.ci.store {
self.ci.nodes.unlock(str);
vc.push(str);
}
for load in self.ci.loads.drain(..) {
if load == value {
self.ci.nodes.unlock(load);
continue;
}
if !self.ci.nodes.unlock_remove(load) {
vc.push(load);
}
}
let store = self.ci.nodes.new_node(self.tof(value), Kind::Stre { offset }, vc);
self.ci.nodes.lock(store);
self.ci.store = Some(store);
store
}
fn load_mem(&mut self, region: Nid, offset: Offset, ty: ty::Id) -> Nid {
self.mem_op(region, offset, Kind::Load { offset }, ty, [VOID].into())
let mut vc = Vc::from([VOID, region]);
if let Some(str) = self.ci.store {
vc.push(str);
}
let load = self.ci.nodes.new_node(ty, Kind::Load { offset }, vc);
self.ci.nodes.lock(load);
self.ci.loads.push(load);
load
}
pub fn generate(&mut self) {
@ -1046,11 +1021,13 @@ impl Codegen {
return Value::NEVER;
};
log::info!("{}", self.ty_display(self.ci.nodes[self.ci.vars[index].value.id].ty));
self.ci.nodes.load_loop_value(
index,
&mut self.ci.vars[index].value.id,
&mut self.ci.vars[index].value,
&mut self.ci.loops,
);
debug_assert_ne!(self.ci.vars[index].value.ty, ty::Id::VOID);
Some(Value::var(index).ty(self.ci.vars[index].value.ty))
}
@ -1067,8 +1044,8 @@ impl Codegen {
};
let mut inps = Vc::from([self.ci.ctrl, value.id]);
for m in self.ci.memories.iter() {
inps.push(m.node);
for &m in self.ci.store.iter() {
inps.push(m);
}
self.ci.ctrl = self.ci.nodes.new_node(ty::Id::VOID, Kind::Return, inps);
@ -1081,44 +1058,44 @@ impl Codegen {
None
}
//Expr::Field { target, name, pos } => {
// let vtarget = self.raw_expr(target)?;
// let tty = vtarget.ty;
Expr::Field { target, name, pos } => {
let mut vtarget = self.raw_expr(target)?;
self.strip_var(&mut vtarget);
let tty = vtarget.ty;
// let ty::Kind::Struct(s) = self.tys.base_of(tty).unwrap_or(tty).expand() else {
// self.report(
// pos,
// fa!(
// "the '{}' is not a struct, or pointer to one, \
// but accessing fields is only possible on structs",
// self.ty_display(tty)
// ),
// );
// return Value::NEVER;
// };
let ty::Kind::Struct(s) = self.tys.base_of(tty).unwrap_or(tty).expand() else {
self.report(
pos,
fa!(
"the '{}' is not a struct, or pointer to one, \
but accessing fields is only possible on structs",
self.ty_display(tty)
),
);
return Value::NEVER;
};
// let Some((offset, ty)) = OffsetIter::offset_of(&self.tys, s, name) else {
// let field_list = self
// .tys
// .struct_fields(s)
// .iter()
// .map(|f| self.tys.names.ident_str(f.name))
// .intersperse("', '")
// .collect::<String>();
// self.report(
// pos,
// fa!(
// "the '{}' does not have this field, \
// but it does have '{field_list}'",
// self.ty_display(tty)
// ),
// );
// return Value::NEVER;
// };
let Some((offset, ty)) = OffsetIter::offset_of(&self.tys, s, name) else {
let field_list = self
.tys
.struct_fields(s)
.iter()
.map(|f| self.tys.names.ident_str(f.name))
.intersperse("', '")
.collect::<String>();
self.report(
pos,
fa!(
"the '{}' does not have this field, \
but it does have '{field_list}'",
self.ty_display(tty)
),
);
return Value::NEVER;
};
// todo!()
// //Some(self.ptr_mem(vtarget, offset, ty, true))
//}
Some(Value::ptr(vtarget.id).off(offset).ty(ty))
}
Expr::UnOp { op: TokenKind::Band, val, .. } => {
let ctx = Ctx { ty: ctx.ty.and_then(|ty| self.tys.base_of(ty)) };
@ -1177,12 +1154,12 @@ impl Codegen {
Expr::BinOp { left, op: TokenKind::Assign, right } => {
let dest = self.raw_expr(left)?;
let value = self.expr(right)?;
self.ci.nodes.lock(value.id);
_ = self.assert_ty(left.pos(), value.ty, dest.ty, true, "assignment dest");
if dest.var {
let var = &mut self.ci.vars[dest.id as usize];
self.ci.nodes.lock(value.id);
let var = &mut self.ci.vars[(u16::MAX - dest.id) as usize];
let prev = core::mem::replace(&mut var.value, value);
self.ci.nodes.unlock_remove(prev.id);
} else if dest.ptr {
@ -1282,6 +1259,22 @@ impl Codegen {
inps.push(value.id);
}
if let Some(str) = self.ci.store {
inps.push(str);
}
for load in self.ci.loads.drain(..) {
if !self.ci.nodes.unlock_remove(load) {
inps.push(load);
}
}
self.store_mem(VOID, 0, VOID);
for load in self.ci.loads.drain(..) {
if !self.ci.nodes.unlock_remove(load) {
inps.push(load);
}
}
self.ci.ctrl = self.ci.nodes.new_node(sig.ret, Kind::Call { func }, inps);
for c in self.ci.clobbered.drain(..) {
self.ci.nodes[self.ci.ctrl].inputs.push(c);
@ -1290,74 +1283,73 @@ impl Codegen {
Some(Value::new(self.ci.ctrl).ty(sig.ret))
}
//Expr::Ctor { pos, ty, fields, .. } => {
// //let Some(sty) = ty.map(|ty| self.ty(ty)).or(ctx.ty) else {
// // self.report(
// // pos,
// // "the type of struct cannot be inferred from context, \
// // use an explicit type instead: <type>.{ ... }",
// // );
// // return Value::NEVER;
// //};
Expr::Ctor { pos, ty, fields, .. } => {
let Some(sty) = ty.map(|ty| self.ty(ty)).or(ctx.ty) else {
self.report(
pos,
"the type of struct cannot be inferred from context, \
use an explicit type instead: <type>.{ ... }",
);
return Value::NEVER;
};
// //let ty::Kind::Struct(s) = sty.expand() else {
// // let inferred = if ty.is_some() { "" } else { "inferred " };
// // self.report(
// // pos,
// // fa!(
// // "the {inferred}type of the constructor is `{}`, \
// // but thats not a struct",
// // self.ty_display(sty)
// // ),
// // );
// // return Value::NEVER;
// //};
let ty::Kind::Struct(s) = sty.expand() else {
let inferred = if ty.is_some() { "" } else { "inferred " };
self.report(
pos,
fa!(
"the {inferred}type of the constructor is `{}`, \
but thats not a struct",
self.ty_display(sty)
),
);
return Value::NEVER;
};
// //// TODO: dont allocate
// //let mut offs = OffsetIter::new(s, &self.tys)
// // .into_iter(&self.tys)
// // .map(|(f, o)| (f.ty, o))
// // .collect::<Vec<_>>();
// //let mem = self.ci.nodes.new_node(sty, Kind::Stck, [VOID, MEM]);
// //for field in fields {
// // let Some(index) = self.tys.find_struct_field(s, field.name) else {
// // self.report(
// // field.pos,
// // fa!("struct '{}' does not have this field", self.ty_display(sty)),
// // );
// // continue;
// // };
// TODO: dont allocate
let mut offs = OffsetIter::new(s, &self.tys)
.into_iter(&self.tys)
.map(|(f, o)| (f.ty, o))
.collect::<Vec<_>>();
let mem = self.ci.nodes.new_node(sty, Kind::Stck, [VOID, MEM]);
for field in fields {
let Some(index) = self.tys.find_struct_field(s, field.name) else {
self.report(
field.pos,
fa!("struct '{}' does not have this field", self.ty_display(sty)),
);
continue;
};
// // let (ty, offset) =
// // core::mem::replace(&mut offs[index], (ty::Id::UNDECLARED, field.pos));
let (ty, offset) =
core::mem::replace(&mut offs[index], (ty::Id::UNDECLARED, field.pos));
// // if ty == ty::Id::UNDECLARED {
// // self.report(field.pos, "the struct field is already initialized");
// // self.report(offset, "previous initialization is here");
// // continue;
// // }
if ty == ty::Id::UNDECLARED {
self.report(field.pos, "the struct field is already initialized");
self.report(offset, "previous initialization is here");
continue;
}
// // let value = self.expr_ctx(&field.value, Ctx::default().with_ty(ty))?;
// // self.store_mem(mem, offset, value);
// //}
let value = self.expr_ctx(&field.value, Ctx::default().with_ty(ty))?;
self.store_mem(mem, offset, value.id);
}
// //let field_list = self
// // .tys
// // .struct_fields(s)
// // .iter()
// // .zip(offs)
// // .filter(|&(_, (ty, _))| ty != ty::Id::UNDECLARED)
// // .map(|(f, _)| self.tys.names.ident_str(f.name))
// // .intersperse(", ")
// // .collect::<String>();
let field_list = self
.tys
.struct_fields(s)
.iter()
.zip(offs)
.filter(|&(_, (ty, _))| ty != ty::Id::UNDECLARED)
.map(|(f, _)| self.tys.names.ident_str(f.name))
.intersperse(", ")
.collect::<String>();
// //if !field_list.is_empty() {
// // self.report(pos, fa!("the struct initializer is missing {field_list}"));
// //}
if !field_list.is_empty() {
self.report(pos, fa!("the struct initializer is missing {field_list}"));
}
// //Some(mem)
// todo!()
//}
Some(Value::ptr(mem).ty(sty))
}
Expr::Block { stmts, .. } => {
let base = self.ci.vars.len();
@ -1453,6 +1445,7 @@ impl Codegen {
let phi = &self.ci.nodes[scope_var.value.id];
debug_assert_eq!(phi.kind, Kind::Phi);
debug_assert_eq!(phi.inputs[2], VOID);
debug_assert_eq!(phi.ty, scope_var.value.ty);
let prev = phi.inputs[1];
self.ci.nodes.replace(scope_var.value.id, prev);
scope_var.value.id = prev;
@ -1462,7 +1455,7 @@ impl Codegen {
if dest_var.value.id == VOID {
self.ci.nodes.unlock(dest_var.value.id);
dest_var.value.id = scope_var.value.id;
dest_var.value = scope_var.value;
self.ci.nodes.lock(dest_var.value.id);
}
@ -1574,9 +1567,9 @@ impl Codegen {
fn strip_var(&mut self, n: &mut Value) {
if core::mem::take(&mut n.var) {
let mut id = self.ci.vars[n.id as usize].value.id;
self.ci.nodes.load_loop_value(n.id as usize, &mut id, &mut self.ci.loops);
n.id = id;
let id = (u16::MAX - n.id) as usize;
self.ci.nodes.load_loop_value(id, &mut self.ci.vars[id].value, &mut self.ci.loops);
*n = self.ci.vars[id].value;
}
}
@ -1629,8 +1622,8 @@ impl Codegen {
) {
for (i, (else_var, then_var)) in to.iter_mut().zip(from).enumerate() {
if else_var.value.id != then_var.value.id {
nodes.load_loop_value(i, &mut then_var.value.id, loops);
nodes.load_loop_value(i, &mut else_var.value.id, loops);
nodes.load_loop_value(i, &mut then_var.value, loops);
nodes.load_loop_value(i, &mut else_var.value, loops);
if else_var.value.id != then_var.value.id {
let ty = nodes[else_var.value.id].ty;
debug_assert_eq!(ty, nodes[then_var.value.id].ty, "TODO: typecheck properly");
@ -1716,21 +1709,11 @@ impl Codegen {
self.ci.nodes.unlock(end);
for mem in self.ci.memories.drain(..) {
if self.ci.nodes[mem.region].kind == Kind::Stck
&& self.ci.nodes[mem.node]
.outputs
.iter()
.all(|&n| self.ci.nodes[n].kind == Kind::Return)
{
let outs = core::mem::take(&mut self.ci.nodes[mem.node].outputs);
for out in outs {
let index =
self.ci.nodes[out].inputs.iter().rposition(|&o| o == mem.node).unwrap();
self.ci.nodes[out].inputs.swap_remove(index);
if let Some(mem) = self.ci.store.take() {
self.ci.nodes.unlock_remove(mem);
}
}
self.ci.nodes.unlock_remove(mem.node);
for load in self.ci.loads.drain(..) {
self.ci.nodes.unlock_remove(load);
}
self.ci.nodes.unlock(mem);
@ -1837,6 +1820,7 @@ impl Codegen {
let mut nodes = core::mem::take(&mut self.ci.nodes);
let func = Function::new(&mut nodes, &self.tys, sig);
log::info!("{:?}", func);
if self.ci.call_count != 0 {
core::mem::swap(
&mut self.ralloc.env.preferred_regs_by_class,
@ -1958,23 +1942,29 @@ impl Codegen {
Kind::Load { offset } => {
let region = node.inputs[1];
let size = self.tys.size_of(node.ty);
debug_assert_eq!(size, 8, "TODO");
if size <= 8 {
let (base, offset) = match func.nodes[region].kind {
Kind::Stck => (reg::STACK_PTR, func.nodes[region].offset + offset),
_ => (atr(allocs[1]), func.nodes[region].offset + offset),
};
self.ci.emit(instrs::ld(atr(allocs[0]), base, offset as _, size as _));
}
}
Kind::Stre { offset } => {
let region = node.inputs[2];
let size = self.tys.size_of(node.ty);
debug_assert_eq!(size, 8, "TODO");
if region != VOID {
let size = u16::try_from(self.tys.size_of(node.ty)).expect("TODO");
let nd = &func.nodes[region];
let (base, offset, src) = match nd.kind {
Kind::Stck => (reg::STACK_PTR, nd.offset + offset, allocs[0]),
_ => (atr(allocs[0]), offset, allocs[1]),
};
self.ci.emit(instrs::st(atr(src), base, offset as _, size as _));
if size > 8 {
self.ci.emit(instrs::bmc(base, atr(src), size));
} else {
self.ci.emit(instrs::st(atr(src), base, offset as _, size));
}
}
}
_ => unreachable!(),
}
@ -2393,7 +2383,14 @@ impl<'a> Function<'a> {
regalloc2::PReg::new(parama.next() as _, regalloc2::RegClass::Int),
)]);
}
_ => todo!(),
9..=16 => todo!(),
_ => {
self.def_nid(arg);
self.add_instr(NEVER, vec![regalloc2::Operand::reg_fixed_def(
self.rg(arg),
regalloc2::PReg::new(parama.next() as _, regalloc2::RegClass::Int),
)]);
}
}
}
@ -2459,7 +2456,13 @@ impl<'a> Function<'a> {
regalloc2::PReg::new(parama.next() as _, regalloc2::RegClass::Int),
));
}
_ => todo!(),
9..=16 => todo!("pass in two register"),
_ => {
ops.push(regalloc2::Operand::reg_fixed_use(
self.rg(i),
regalloc2::PReg::new(parama.next() as _, regalloc2::RegClass::Int),
));
}
}
}
@ -2478,15 +2481,21 @@ impl<'a> Function<'a> {
Kind::Phi | Kind::Arg { .. } | Kind::Mem => {}
Kind::Load { .. } => {
let region = node.inputs[1];
if self.tys.size_of(node.ty) <= 8 {
let ops = match self.nodes[region].kind {
Kind::Stck => vec![self.drg(nid)],
_ => vec![self.drg(nid), self.urg(region)],
};
self.add_instr(nid, ops);
}
}
Kind::Stre { .. } => {
let region = node.inputs[2];
if region != VOID {
let ops = match self.nodes[region].kind {
_ if self.tys.size_of(node.ty) > 8 => {
vec![self.urg(region), self.urg(self.nodes[node.inputs[1]].inputs[1])]
}
Kind::Stck => vec![self.urg(node.inputs[1])],
_ => vec![self.urg(region), self.urg(node.inputs[1])],
};
@ -2494,6 +2503,7 @@ impl<'a> Function<'a> {
}
}
}
}
fn bridge(&mut self, pred: u16, succ: u16) {
if self.nodes[pred].ralloc_backref == u16::MAX

20
lang/tests/son_tests_pointer_opts.txt
View file

@ -3,17 +3,23 @@ clobber:
ST r3, r2, 0a, 8h
JALA r0, r31, 0a
main:
ADDI64 r254, r254, -32d
ST r31, r254, 8a, 24h
ADDI64 r254, r254, -64d
ST r31, r254, 8a, 56h
LI64 r32, 2d
LI64 r33, 1d
LI64 r34, 0d
ADDI64 r2, r254, 0d
ST r34, r254, 0a, 8h
ST r33, r254, 0a, 8h
ST r32, r254, 0a, 8h
LD r35, r254, 0a, 8h
JAL r31, r0, :clobber
LD r33, r254, 0a, 8h
ADDI64 r1, r33, -4d
LD r31, r254, 8a, 24h
ADDI64 r254, r254, 32d
LD r36, r254, 0a, 8h
MULI64 r37, r35, 2d
SUB64 r1, r37, r36
LD r31, r254, 8a, 56h
ADDI64 r254, r254, 64d
JALA r0, r31, 0a
code size: 166
code size: 229
ret: 0
status: Ok(())

19
lang/tests/son_tests_pointers.txt
View file

@ -1,23 +1,26 @@
drop:
JALA r0, r31, 0a
main:
ADDI64 r254, r254, -32d
ST r31, r254, 8a, 24h
ADDI64 r254, r254, -56d
ST r31, r254, 8a, 48h
LI64 r32, 1d
ADDI64 r2, r254, 0d
ADDI64 r33, r254, 0d
ADDI64 r34, r33, 1000d
ADDI64 r35, r34, -1000d
ST r32, r254, 0a, 8h
CP r2, r35
JAL r31, r0, :modify
CP r2, r32
JAL r31, r0, :drop
LD r33, r254, 0a, 8h
ADDI64 r1, r33, -2d
LD r31, r254, 8a, 24h
ADDI64 r254, r254, 32d
LD r36, r35, 0a, 8h
ADDI64 r1, r36, -2d
LD r31, r254, 8a, 48h
ADDI64 r254, r254, 56d
JALA r0, r31, 0a
modify:
LI64 r3, 2d
ST r3, r2, 0a, 8h
JALA r0, r31, 0a
code size: 187
code size: 212
ret: 0
status: Ok(())

33
lang/tests/son_tests_structs.txt
View file

@ -0,0 +1,33 @@
main:
ADDI64 r254, r254, -88d
ST r31, r254, 40a, 48h
LI64 r32, 3d
LI64 r33, 1d
LI64 r34, 4d
ADDI64 r35, r254, 0d
ST r34, r254, 0a, 8h
ST r33, r254, 8a, 8h
ADDI64 r2, r254, 16d
BMC r254, r2, 16h
ST r32, r254, 32a, 8h
JAL r31, r0, :odher_pass
LD r36, r1, 16a, 8h
JNE r36, r32, :0
CP r2, r1
JAL r31, r0, :pass
JMP :1
0: LI64 r1, 0d
1: LD r31, r254, 40a, 48h
ADDI64 r254, r254, 88d
JALA r0, r31, 0a
odher_pass:
CP r1, r2
JALA r0, r31, 0a
pass:
LD r4, r2, 8a, 8h
LD r5, r2, 0a, 8h
SUB64 r1, r5, r4
JALA r0, r31, 0a
code size: 268
ret: 3
status: Ok(())