From 9dfb2eb606e9049bc5d372e674a75e0be2c57ff0 Mon Sep 17 00:00:00 2001
From: Jakub Doka <jakub.doka2@gmail.com>
Date: Sun, 24 Nov 2024 11:26:38 +0100
Subject: [PATCH] fg

---
 lang/README.md                              | 14 ++++
 lang/src/son.rs                             | 16 ++++-
 lang/tests/son_tests_pointer_comparison.txt |  7 ++
 lang/tests/son_tests_pointers.txt           |  4 +-
 smh.hb                                      | 77 +++------------------
 5 files changed, 44 insertions(+), 74 deletions(-)
 create mode 100644 lang/tests/son_tests_pointer_comparison.txt

diff --git a/lang/README.md b/lang/README.md
index 579a774..1c41806 100644
--- a/lang/README.md
+++ b/lang/README.md
@@ -658,6 +658,20 @@ main := fn(): uint {
 
 ### Purely Testing Examples
 
+#### pointer_comparison
+```hb
+main := fn(): int {
+	a := 10
+	b := 20
+
+	if &a == &a {
+		return 10
+	} else {
+		return 20
+	}
+}
+```
+
 #### wrong_dead_code_elimination
 ```hb
 Color := struct {b: u8}
diff --git a/lang/src/son.rs b/lang/src/son.rs
index a7c02aa..1ecb0f9 100644
--- a/lang/src/son.rs
+++ b/lang/src/son.rs
@@ -871,7 +871,8 @@ impl Nodes {
 
                 if lhs == rhs {
                     match op {
-                        T::Sub => return Some(self.new_const(ty, 0)),
+                        T::Ne | T::Gt | T::Lt | T::Sub => return Some(self.new_const(ty, 0)),
+                        T::Eq | T::Ge | T::Le => return Some(self.new_const(ty, 1)),
                         T::Add => {
                             let rhs = self.new_const(ty, 2);
                             return Some(self.new_node(
@@ -4548,9 +4549,17 @@ impl<'a> Codegen<'a> {
         })
     }
 
-    fn assign_pattern(&mut self, pat: &Expr, right: Value) {
+    fn assign_pattern(&mut self, pat: &Expr, mut right: Value) {
         match *pat {
-            Expr::Ident { id, .. } => {
+            Expr::Ident { id, pos, .. } => {
+                if parser::find_symbol(&self.file().symbols, id).flags & idfl::REFERENCED != 0
+                    && !right.ptr
+                {
+                    let stack = self.new_stack(pos, right.ty);
+                    self.store_mem(stack, right.ty, right.id);
+                    right.id = stack;
+                    right.ptr = true;
+                }
                 self.ci.scope.vars.push(Variable::new(
                     id,
                     right.ty,
@@ -5514,6 +5523,7 @@ mod tests {
         fb_driver;
 
         // Purely Testing Examples;
+        pointer_comparison;
         different_function_destinations;
         triggering_store_in_divergent_branch;
         wrong_dead_code_elimination;
diff --git a/lang/tests/son_tests_pointer_comparison.txt b/lang/tests/son_tests_pointer_comparison.txt
new file mode 100644
index 0000000..2d6710e
--- /dev/null
+++ b/lang/tests/son_tests_pointer_comparison.txt
@@ -0,0 +1,7 @@
+main:
+    LI64 r13, 10d
+    CP r1, r13
+    JALA r0, r31, 0a
+code size: 32
+ret: 10
+status: Ok(())
diff --git a/lang/tests/son_tests_pointers.txt b/lang/tests/son_tests_pointers.txt
index 0c5b1e1..7518c6a 100644
--- a/lang/tests/son_tests_pointers.txt
+++ b/lang/tests/son_tests_pointers.txt
@@ -8,9 +8,9 @@ main:
     ST r33, r254, 0a, 8h
     CP r2, r32
     JAL r31, r0, :modify
-    CP r2, r33
-    JAL r31, r0, :drop
     LD r32, r254, 0a, 8h
+    CP r2, r32
+    JAL r31, r0, :drop
     ADDI64 r32, r32, -2d
     CP r1, r32
     LD r31, r254, 8a, 24h
diff --git a/smh.hb b/smh.hb
index 95e4940..86275bc 100644
--- a/smh.hb
+++ b/smh.hb
@@ -1,71 +1,10 @@
-log := fn(msg: ^u8): void return @eca(0, msg)
-
-absf := fn(x: f32): f32 {
-    if (x < 0) {
-        return -x
-    }
-    return x
-}
-
-sqrt := fn(x: f32, low: f32, high: f32): f32 {
-    mid := (high - low)/2.0
-    if (absf(mid * mid - x) < 0.01) {
-        return mid
-    }
-    if (mid * mid > x) {
-        return sqrt(x, low, mid)
-    }
-    if (mid * mid < x) {
-        return sqrt(x, mid, high)
-    }
-    return -9999.0
-}
-
-is_filled := fn(x: uint, y: uint, center_x: f32, center_y: f32, inner_radius: f32, outer_radius: f32): bool {
-     x_f := @as(f32, @floatcast(@itf(@bitcast(x))))
-     y_f := @as(f32, @floatcast(@itf(@bitcast(y))))
-     x_diff := x_f - center_x
-     y_diff := x_f - center_y
-     dist := sqrt(x_diff * x_diff + y_diff * y_diff)
-     if (dist < outer_radius) {
-        if (dist > inner_radius) {
-            return true
-        }
-    }
-    return false
-}
-
-buffer := @as([u8; 61], idk)
-
-render_row := fn(y: uint): void {
-    x := 0
-    loop {
-        if (x > 60) {
-            break
-        }
-        buffer[x] = 32
-    }
-    x = 0
-    loop {
-        if (x > 60) {
-            break
-        }
-        if (is_filled(x, y, 30.0, 30.0, 10.0, 20.0)) {
-            buffer[x] = 35
-        }
-        x = x + 1
-    }
-    log(buffer[0]) 
-}
-
 main := fn(): int {
-    y := 0
-    loop {
-        if (y > 60) {
-            break
-        }
-        render_row(y)
-        y = y + 1
-    }
-    return 0
+	a := 10
+	b := 20
+
+	if &a == &a {
+		return 10
+	} else {
+		return 20
+	}
 }