diff --git a/lang/README.md b/lang/README.md
index fa595d4e..57a1ad87 100644
--- a/lang/README.md
+++ b/lang/README.md
@@ -313,9 +313,12 @@ Color := packed struct {b: u8, g: u8, r: u8, a: u8}
 main := fn(): uint {
 	i := Color.(0, 0, 0, 0)
 	i += .(1, 1, 1, 1)
-	if i.r + i.g + i.b + i.a != 4 {
-		return 1008
-	}
+	if i.r + i.g + i.b + i.a != 4 return 1008
+
+	if Point.(1, 1) != Point.(1, 1) return 1009
+	if Point.(1, 2) == Point.(1, 1) return 1010
+	if Point.(1, 2) < Point.(1, 1) return 1011
+	if Point.(1, 1) > Point.(2, 1) return 1012
 
 	a := Point.(1, 2)
 	b := Point.(3, 4)
diff --git a/lang/src/lexer.rs b/lang/src/lexer.rs
index 4a7c9bb8..002d4fda 100644
--- a/lang/src/lexer.rs
+++ b/lang/src/lexer.rs
@@ -193,6 +193,10 @@ impl TokenKind {
         matches!(self, S::Eq | S::Ne | S::Bor | S::Xor | S::Band | S::Add | S::Mul)
     }
 
+    pub fn is_compatison(self) -> bool {
+        matches!(self, Self::Lt | Self::Gt | Self::Ge | Self::Le | Self::Ne | Self::Eq)
+    }
+
     pub fn is_supported_float_op(self) -> bool {
         matches!(
             self,
diff --git a/lang/src/lib.rs b/lang/src/lib.rs
index 0ec06016..5d13c4fd 100644
--- a/lang/src/lib.rs
+++ b/lang/src/lib.rs
@@ -386,10 +386,10 @@ pub mod ty {
         pub const DINT: Self = Self::UINT;
 
         pub fn bin_ret(self, op: TokenKind) -> Id {
-            use TokenKind as T;
-            match op {
-                T::Lt | T::Gt | T::Le | T::Ge | T::Ne | T::Eq => Id::BOOL,
-                _ => self,
+            if op.is_compatison() {
+                Self::BOOL
+            } else {
+                self
             }
         }
 
diff --git a/lang/src/son.rs b/lang/src/son.rs
index 9208ed07..007792c5 100644
--- a/lang/src/son.rs
+++ b/lang/src/son.rs
@@ -3066,15 +3066,7 @@ impl<'a> Codegen<'a> {
                         self.strip_var(&mut rhs);
                         self.implicit_unwrap(right.pos(), &mut rhs);
                         let (ty, aclass) = self.binop_ty(pos, &mut lhs, &mut rhs, op);
-                        if matches!(
-                            op,
-                            TokenKind::Lt
-                                | TokenKind::Gt
-                                | TokenKind::Ge
-                                | TokenKind::Le
-                                | TokenKind::Ne
-                                | TokenKind::Eq
-                        ) {
+                        if op.is_compatison() {
                             if lhs.ty.is_float() {
                             } else {
                                 self.ci.nodes.lock(rhs.id);
@@ -3109,6 +3101,22 @@ impl<'a> Codegen<'a> {
                         self.struct_op(left.pos(), op, s, dst, lhs.id, rhs.id);
                         Some(Value::ptr(dst).ty(lhs.ty))
                     }
+                    ty::Kind::Struct(s) if op.is_compatison() => {
+                        let binding_op = match op {
+                            TokenKind::Eq => TokenKind::Band,
+                            _ => TokenKind::Bor,
+                        };
+
+                        self.ci.nodes.lock(lhs.id);
+                        let rhs = self.raw_expr_ctx(right, Ctx::default().with_ty(lhs.ty));
+                        self.ci.nodes.unlock(lhs.id);
+                        let mut rhs = rhs?;
+                        self.strip_var(&mut rhs);
+                        self.assert_ty(pos, &mut rhs, lhs.ty, "struct operand");
+
+                        self.struct_fold_op(left.pos(), op, binding_op, s, lhs.id, rhs.id)
+                            .or(Value::NEVER)
+                    }
                     _ => {
                         self.report(
                             pos,
@@ -4149,6 +4157,67 @@ impl<'a> Codegen<'a> {
         true
     }
 
+    fn struct_fold_op(
+        &mut self,
+        pos: Pos,
+        op: TokenKind,
+        fold_op: TokenKind,
+        s: ty::Struct,
+        lhs: Nid,
+        rhs: Nid,
+    ) -> Option<Value> {
+        debug_assert!(op.is_compatison());
+
+        let mut fold = None;
+        let mut offs = OffsetIter::new(s, self.tys);
+        while let Some((ty, off)) = offs.next_ty(self.tys) {
+            let lhs = self.offset(lhs, off);
+            let rhs = self.offset(rhs, off);
+            let vl = match ty.expand() {
+                _ if ty.is_pointer() || ty.is_integer() || ty == ty::Id::BOOL => {
+                    let lhs = self.load_mem(lhs, ty);
+                    let rhs = self.load_mem(rhs, ty);
+                    self.ci.nodes.new_node(
+                        ty::Id::BOOL,
+                        Kind::BinOp { op },
+                        [VOID, lhs, rhs],
+                        self.tys,
+                    )
+                }
+                ty::Kind::Struct(is) => match self.struct_fold_op(pos, op, fold_op, is, lhs, rhs) {
+                    Some(v) => v.id,
+                    None => {
+                        self.report(
+                            pos,
+                            fa!("...when appliing '{0} {op} {0}'", self.ty_display(s.into())),
+                        );
+                        return None;
+                    }
+                },
+                _ => {
+                    self.report(pos, fa!("'{0} {op} {0}' is not supported", self.ty_display(ty)));
+                    return None;
+                }
+            };
+
+            fold = Some(match fold {
+                None => vl,
+                Some(o) => self.ci.nodes.new_node(
+                    ty::Id::BOOL,
+                    Kind::BinOp { op: fold_op },
+                    [VOID, o, vl],
+                    self.tys,
+                ),
+            });
+        }
+
+        match op {
+            _ if let Some(fold) = fold => Some(Value::new(fold).ty(ty::Id::BOOL)),
+            TokenKind::Eq => Some(self.ci.nodes.new_const_lit(ty::Id::BOOL, true)),
+            _ => Some(self.ci.nodes.new_const_lit(ty::Id::BOOL, false)),
+        }
+    }
+
     fn compute_signature(&mut self, func: &mut ty::Func, pos: Pos, args: &[Expr]) -> Option<Sig> {
         let Func { file, expr, sig, .. } = self.tys.ins.funcs[*func];
         let fast = self.files[file.index()].clone();
diff --git a/lang/src/son/hbvm/regalloc.rs b/lang/src/son/hbvm/regalloc.rs
index 8eadb73c..f6c309a9 100644
--- a/lang/src/son/hbvm/regalloc.rs
+++ b/lang/src/son/hbvm/regalloc.rs
@@ -301,10 +301,10 @@ impl HbvmBackend {
         let bundle_count = self.ralloc.bundles.len() + (reg_offset as usize);
         (
             if tail {
+                bundle_count.saturating_sub(reg::RET_ADDR as _)
+            } else {
                 assert!(bundle_count < reg::STACK_PTR as usize, "TODO: spill memory");
                 self.ralloc.bundles.len()
-            } else {
-                bundle_count.saturating_sub(reg::RET_ADDR as _)
             },
             tail,
         )
diff --git a/lang/tests/son_tests_advanced_floating_point_arithmetic.txt b/lang/tests/son_tests_advanced_floating_point_arithmetic.txt
index 1c955323..076c2e7e 100644
--- a/lang/tests/son_tests_advanced_floating_point_arithmetic.txt
+++ b/lang/tests/son_tests_advanced_floating_point_arithmetic.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     LI32 r32, 1148846080w
     CP r2, r32
     JAL r31, r0, :sin
@@ -8,12 +8,10 @@ main:
     FMUL32 r32, r33, r32
     FTI32 r32, r32, 1b
     CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 sin:
-    ADDI64 r254, r254, -56d
-    ST r32, r254, 0a, 56h
     CP r13, r2
     LI32 r14, 1124073472w
     LI32 r15, 1078530011w
@@ -44,9 +42,7 @@ sin:
     FMUL32 r13, r14, r13
     FADD32 r13, r15, r13
     CP r1, r13
-    LD r32, r254, 0a, 56h
-    ADDI64 r254, r254, 56d
     JALA r0, r31, 0a
-code size: 1363
+code size: 1315
 ret: 826
 status: Ok(())
diff --git a/lang/tests/son_tests_arrays.txt b/lang/tests/son_tests_arrays.txt
index b990646d..451a8885 100644
--- a/lang/tests/son_tests_arrays.txt
+++ b/lang/tests/son_tests_arrays.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -64d
-    ST r31, r254, 24a, 40h
+    ADDI64 r254, r254, -56d
+    ST r31, r254, 24a, 32h
     LI64 r32, 1d
     ADDI64 r33, r254, 0d
     ST r32, r254, 0a, 8h
@@ -13,12 +13,10 @@ main:
     CP r33, r1
     ADD64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 24a, 40h
-    ADDI64 r254, r254, 64d
+    LD r31, r254, 24a, 32h
+    ADDI64 r254, r254, 56d
     JALA r0, r31, 0a
 pass:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 0a, 32h
     CP r13, r2
     LD r14, r13, 8a, 8h
     MULI64 r15, r14, 8d
@@ -28,9 +26,7 @@ pass:
     LD r13, r13, 0a, 8h
     ADD64 r13, r13, r14
     CP r1, r13
-    LD r32, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
-code size: 294
+code size: 246
 ret: 8
 status: Ok(())
diff --git a/lang/tests/son_tests_big_array_crash.txt b/lang/tests/son_tests_big_array_crash.txt
index 8f928347..61ce17bd 100644
--- a/lang/tests/son_tests_big_array_crash.txt
+++ b/lang/tests/son_tests_big_array_crash.txt
@@ -1,12 +1,8 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LRA r13, r0, :SIN_TABLE
     LD r13, r13, 80a, 8h
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 818
+code size: 770
 ret: 1736
 status: Ok(())
diff --git a/lang/tests/son_tests_branch_assignments.txt b/lang/tests/son_tests_branch_assignments.txt
index 3f7738cb..425456a6 100644
--- a/lang/tests/son_tests_branch_assignments.txt
+++ b/lang/tests/son_tests_branch_assignments.txt
@@ -1,6 +1,4 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r14, r2
     LI64 r13, 1d
     JNE r14, r13, :0
@@ -10,9 +8,7 @@ main:
     JMP :1
  2: LI64 r13, 3d
  1: CP r1, r13
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 123
+code size: 75
 ret: 2
 status: Ok(())
diff --git a/lang/tests/son_tests_c_strings.txt b/lang/tests/son_tests_c_strings.txt
index a0e2d174..a4bc7151 100644
--- a/lang/tests/son_tests_c_strings.txt
+++ b/lang/tests/son_tests_c_strings.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    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
@@ -11,12 +11,10 @@ main:
     CP r33, r1
     ADD64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 str_len:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 0a, 32h
     CP r15, r2
     CP r14, r0
     CP r13, r14
@@ -28,9 +26,7 @@ str_len:
  0: ADDI64 r15, r15, 1d
     ADDI64 r13, r13, 1d
     JMP :2
- 1: LD r32, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
-    JALA r0, r31, 0a
-code size: 264
+ 1: JALA r0, r31, 0a
+code size: 216
 ret: 16
 status: Ok(())
diff --git a/lang/tests/son_tests_comments.txt b/lang/tests/son_tests_comments.txt
index b91aab03..5ae53459 100644
--- a/lang/tests/son_tests_comments.txt
+++ b/lang/tests/son_tests_comments.txt
@@ -1,12 +1,12 @@
 foo:
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
+    ADDI64 r254, r254, -8d
+    ST r31, r254, 0a, 8h
     JAL r31, r0, :foo
     CP r1, r0
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
+    LD r31, r254, 0a, 8h
+    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 code size: 88
 ret: 0
diff --git a/lang/tests/son_tests_comptime_function_from_another_file.txt b/lang/tests/son_tests_comptime_function_from_another_file.txt
index 16cc183e..453d2c07 100644
--- a/lang/tests/son_tests_comptime_function_from_another_file.txt
+++ b/lang/tests/son_tests_comptime_function_from_another_file.txt
@@ -1,12 +1,8 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LRA r13, r0, :a
     LD r13, r13, 0a, 8h
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 98
+code size: 50
 ret: 50
 status: Ok(())
diff --git a/lang/tests/son_tests_comptime_min_reg_leak.txt b/lang/tests/son_tests_comptime_min_reg_leak.txt
index 16cc183e..453d2c07 100644
--- a/lang/tests/son_tests_comptime_min_reg_leak.txt
+++ b/lang/tests/son_tests_comptime_min_reg_leak.txt
@@ -1,12 +1,8 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LRA r13, r0, :a
     LD r13, r13, 0a, 8h
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 98
+code size: 50
 ret: 50
 status: Ok(())
diff --git a/lang/tests/son_tests_conditional_stores.txt b/lang/tests/son_tests_conditional_stores.txt
index 8f448a8f..4e7b7ec0 100644
--- a/lang/tests/son_tests_conditional_stores.txt
+++ b/lang/tests/son_tests_conditional_stores.txt
@@ -2,8 +2,8 @@ cond:
     CP r1, r0
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     JAL r31, r0, :cond
     CP r33, r1
     CP r32, r0
@@ -11,8 +11,8 @@ main:
     JMP :1
  0: LI64 r32, 2d
  1: CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 code size: 117
 ret: 0
diff --git a/lang/tests/son_tests_constants.txt b/lang/tests/son_tests_constants.txt
index 6576f566..543f71d5 100644
--- a/lang/tests/son_tests_constants.txt
+++ b/lang/tests/son_tests_constants.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI32 r13, 69w
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 76
+code size: 28
 ret: 69
 status: Ok(())
diff --git a/lang/tests/son_tests_different_function_destinations.txt b/lang/tests/son_tests_different_function_destinations.txt
index 18f99215..22d75554 100644
--- a/lang/tests/son_tests_different_function_destinations.txt
+++ b/lang/tests/son_tests_different_function_destinations.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -152d
-    ST r31, r254, 80a, 72h
+    ADDI64 r254, r254, -144d
+    ST r31, r254, 80a, 64h
     LRA r32, r0, :glob_stru
     JAL r31, r0, :new_stru
     ST r1, r32, 0a, 16h
@@ -68,19 +68,17 @@ main:
     ST r1, r34, 0a, 16h
     ADD64 r32, r32, r35
     JMP :8
- 1: LD r31, r254, 80a, 72h
-    ADDI64 r254, r254, 152d
+ 1: LD r31, r254, 80a, 64h
+    ADDI64 r254, r254, 144d
     JALA r0, r31, 0a
 new_stru:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 16a, 8h
+    ADDI64 r254, r254, -16d
     ADDI64 r13, r254, 0d
     ST r0, r254, 0a, 8h
     ST r0, r254, 8a, 8h
     LD r1, r13, 0a, 16h
-    LD r32, r254, 16a, 8h
-    ADDI64 r254, r254, 24d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 791
+code size: 765
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_different_types.txt b/lang/tests/son_tests_different_types.txt
index c2c72c1b..f3f61d73 100644
--- a/lang/tests/son_tests_different_types.txt
+++ b/lang/tests/son_tests_different_types.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -36d
-    ST r32, r254, 12a, 24h
+    ADDI64 r254, r254, -12d
     LI8 r13, 255b
     ST r13, r254, 0a, 1h
     ST r0, r254, 1a, 1h
@@ -23,9 +22,8 @@ main:
     JMP :1
  2: LI64 r13, 512d
     CP r1, r13
- 1: LD r32, r254, 12a, 24h
-    ADDI64 r254, r254, 36d
+ 1: ADDI64 r254, r254, 12d
     JALA r0, r31, 0a
-code size: 261
+code size: 235
 ret: 512
 status: Ok(())
diff --git a/lang/tests/son_tests_directives.txt b/lang/tests/son_tests_directives.txt
index a29e1a8f..b2e84f91 100644
--- a/lang/tests/son_tests_directives.txt
+++ b/lang/tests/son_tests_directives.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -48d
-    ST r32, r254, 16a, 32h
+    ADDI64 r254, r254, -16d
     LI64 r13, 10d
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 8h
@@ -15,10 +14,9 @@ main:
     LD r3, r14, 0a, 16h
     ECA 
     CP r1, r0
-    LD r32, r254, 16a, 32h
-    ADDI64 r254, r254, 48d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 ev: Ecall
-code size: 180
+code size: 154
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_exhaustive_loop_testing.txt b/lang/tests/son_tests_exhaustive_loop_testing.txt
index 23cb9452..c4c18422 100644
--- a/lang/tests/son_tests_exhaustive_loop_testing.txt
+++ b/lang/tests/son_tests_exhaustive_loop_testing.txt
@@ -1,6 +1,4 @@
 continue_and_state_change:
-    ADDI64 r254, r254, -48d
-    ST r32, r254, 0a, 48h
     CP r13, r2
     CP r15, r0
     LI64 r16, 3d
@@ -18,12 +16,10 @@ continue_and_state_change:
     JMP :5
  4: ADDI64 r13, r13, 1d
  3: JMP :6
- 5: LD r32, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
+ 5: JALA r0, r31, 0a
 infinite_loop:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     LI64 r34, 1d
     CP r33, r0
     CP r32, r33
@@ -33,12 +29,12 @@ infinite_loop:
     JAL r31, r0, :continue_and_state_change
     CP r32, r1
     JMP :1
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+    LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 0a, 48h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 0a, 40h
     CP r2, r0
     JAL r31, r0, :multiple_breaks
     CP r32, r1
@@ -84,12 +80,10 @@ main:
     JMP :1
  6: JAL r31, r0, :infinite_loop
     CP r1, r0
- 1: LD r31, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
+ 1: LD r31, r254, 0a, 40h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
 multiple_breaks:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 0a, 24h
     CP r13, r2
     LI64 r14, 3d
     LI64 r15, 10d
@@ -100,12 +94,8 @@ multiple_breaks:
  1: CP r1, r13
     JMP :3
  2: JMP :4
- 3: LD r32, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
+ 3: JALA r0, r31, 0a
 state_change_in_break:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 0a, 24h
     CP r13, r2
     LI64 r14, 3d
     LI64 r15, 10d
@@ -117,10 +107,8 @@ state_change_in_break:
     JMP :3
  2: ADDI64 r13, r13, 1d
     JMP :4
- 3: LD r32, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
-    JALA r0, r31, 0a
+ 3: JALA r0, r31, 0a
 timed out
-code size: 811
+code size: 667
 ret: 10
 status: Ok(())
diff --git a/lang/tests/son_tests_fb_driver.txt b/lang/tests/son_tests_fb_driver.txt
index c3f362b1..6c45b87a 100644
--- a/lang/tests/son_tests_fb_driver.txt
+++ b/lang/tests/son_tests_fb_driver.txt
@@ -1,15 +1,15 @@
 check_platform:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     JAL r31, r0, :x86_fb_ptr
     CP r32, r1
     CP r1, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -64d
-    ST r31, r254, 0a, 64h
+    ADDI64 r254, r254, -56d
+    ST r31, r254, 0a, 56h
     JAL r31, r0, :check_platform
     CP r33, r0
     LI64 r36, 30d
@@ -35,29 +35,21 @@ main:
  0: ADDI64 r35, r35, 1d
     ADDI64 r32, r32, 1d
  4: JMP :5
- 2: LD r31, r254, 0a, 64h
-    ADDI64 r254, r254, 64d
+ 2: LD r31, r254, 0a, 56h
+    ADDI64 r254, r254, 56d
     JALA r0, r31, 0a
 set_pixel:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 0a, 24h
     CP r13, r2
     CP r14, r3
     CP r15, r4
     MUL64 r14, r14, r15
     ADD64 r13, r14, r13
     CP r1, r13
-    LD r32, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 x86_fb_ptr:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 100d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 425
+code size: 329
 ret: 3000
 status: Ok(())
diff --git a/lang/tests/son_tests_floating_point_arithmetic.txt b/lang/tests/son_tests_floating_point_arithmetic.txt
index fde9aa75..0172efac 100644
--- a/lang/tests/son_tests_floating_point_arithmetic.txt
+++ b/lang/tests/son_tests_floating_point_arithmetic.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI32 r13, 3212836864w
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 76
+code size: 28
 ret: 3212836864
 status: Ok(())
diff --git a/lang/tests/son_tests_functions.txt b/lang/tests/son_tests_functions.txt
index 0dab6583..6cc8971c 100644
--- a/lang/tests/son_tests_functions.txt
+++ b/lang/tests/son_tests_functions.txt
@@ -1,24 +1,16 @@
 add_one:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     ADDI64 r13, r13, 1d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 add_two:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     ADDI64 r13, r13, 2d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     LI64 r32, 10d
     CP r2, r32
     JAL r31, r0, :add_one
@@ -29,9 +21,9 @@ main:
     CP r33, r1
     ADD64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
-code size: 272
+code size: 176
 ret: 33
 status: Ok(())
diff --git a/lang/tests/son_tests_generic_functions.txt b/lang/tests/son_tests_generic_functions.txt
index c7968559..3e56d70d 100644
--- a/lang/tests/son_tests_generic_functions.txt
+++ b/lang/tests/son_tests_generic_functions.txt
@@ -1,26 +1,18 @@
 add:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r13, r2
     CP r14, r3
     ADD64 r13, r13, r14
     CP r1, r13
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 add:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r13, r2
     CP r14, r3
     ADD32 r13, r13, r14
     CP r1, r13
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     LI32 r32, 2w
     CP r2, r32
     CP r3, r32
@@ -35,9 +27,9 @@ main:
     ANDI r32, r32, 4294967295d
     SUB64 r32, r32, r33
     CP r1, r32
-    LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+    LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
-code size: 287
+code size: 191
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_generic_type_mishap.txt b/lang/tests/son_tests_generic_type_mishap.txt
index cbdeecbf..4841b9f1 100644
--- a/lang/tests/son_tests_generic_type_mishap.txt
+++ b/lang/tests/son_tests_generic_type_mishap.txt
@@ -1,15 +1,15 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
+    ADDI64 r254, r254, -8d
+    ST r31, r254, 0a, 8h
     JAL r31, r0, :process
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
+    LD r31, r254, 0a, 8h
+    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 opaque:
     JALA r0, r31, 0a
 process:
-    ADDI64 r254, r254, -56d
-    ST r31, r254, 16a, 40h
+    ADDI64 r254, r254, -48d
+    ST r31, r254, 16a, 32h
     LI64 r32, 1000d
     ADDI64 r33, r254, 0d
     ST r0, r254, 0a, 1h
@@ -23,8 +23,8 @@ process:
     JMP :3
  2: ADDI64 r32, r32, -1d
  1: JMP :4
- 3: LD r31, r254, 16a, 40h
-    ADDI64 r254, r254, 56d
+ 3: LD r31, r254, 16a, 32h
+    ADDI64 r254, r254, 48d
     JALA r0, r31, 0a
 timed out
 code size: 248
diff --git a/lang/tests/son_tests_generic_types.txt b/lang/tests/son_tests_generic_types.txt
index f96cf427..b71e0bbf 100644
--- a/lang/tests/son_tests_generic_types.txt
+++ b/lang/tests/son_tests_generic_types.txt
@@ -1,6 +1,6 @@
 deinit:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 0a, 48h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 0a, 40h
     CP r32, r2
     LD r33, r32, 16a, 8h
     LI64 r34, 8d
@@ -12,12 +12,10 @@ deinit:
     JAL r31, r0, :free
     CP r1, r32
     JAL r31, r0, :new
-    LD r31, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
+    LD r31, r254, 0a, 40h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
 free:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 0a, 32h
     CP r13, r2
     CP r14, r3
     CP r15, r4
@@ -28,12 +26,10 @@ free:
     CP r4, r14
     CP r5, r15
     ECA 
-    LD r32, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -64d
-    ST r31, r254, 24a, 40h
+    ADDI64 r254, r254, -56d
+    ST r31, r254, 24a, 32h
     ADDI64 r32, r254, 0d
     CP r1, r32
     JAL r31, r0, :new
@@ -47,12 +43,10 @@ main:
     CP r2, r32
     JAL r31, r0, :deinit
     CP r1, r33
-    LD r31, r254, 24a, 40h
-    ADDI64 r254, r254, 64d
+    LD r31, r254, 24a, 32h
+    ADDI64 r254, r254, 56d
     JALA r0, r31, 0a
 malloc:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 0a, 24h
     CP r13, r2
     CP r14, r3
     LRA r15, r0, :MALLOC_SYS_CALL
@@ -63,24 +57,20 @@ malloc:
     ECA 
     CP r13, r1
     CP r1, r13
-    LD r32, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 new:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 24a, 8h
+    ADDI64 r254, r254, -24d
     CP r14, r1
     ADDI64 r13, r254, 0d
     ST r0, r254, 0a, 8h
     ST r0, r254, 8a, 8h
     ST r0, r254, 16a, 8h
     BMC r13, r14, 24h
-    LD r32, r254, 24a, 8h
-    ADDI64 r254, r254, 32d
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 push:
-    ADDI64 r254, r254, -112d
-    ST r31, r254, 0a, 112h
+    ADDI64 r254, r254, -104d
+    ST r31, r254, 0a, 104h
     CP r38, r2
     CP r39, r3
     LI64 r37, 1d
@@ -132,9 +122,9 @@ push:
     ADD64 r32, r32, r37
     ST r32, r38, 8a, 8h
     CP r1, r33
- 4: LD r31, r254, 0a, 112h
-    ADDI64 r254, r254, 112d
+ 4: LD r31, r254, 0a, 104h
+    ADDI64 r254, r254, 104d
     JALA r0, r31, 0a
-code size: 1045
+code size: 923
 ret: 69
 status: Ok(())
diff --git a/lang/tests/son_tests_global_aliasing_overptimization.txt b/lang/tests/son_tests_global_aliasing_overptimization.txt
index 3dbf30f7..3b85124f 100644
--- a/lang/tests/son_tests_global_aliasing_overptimization.txt
+++ b/lang/tests/son_tests_global_aliasing_overptimization.txt
@@ -1,23 +1,19 @@
 clobber:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LRA r13, r0, :var
     ST r0, r13, 0a, 8h
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     LRA r32, r0, :var
     LI64 r33, 2d
     ST r33, r32, 0a, 8h
     JAL r31, r0, :clobber
     LD r32, r32, 0a, 8h
     CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
-code size: 207
+code size: 159
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_global_variable_wiredness.txt b/lang/tests/son_tests_global_variable_wiredness.txt
index bf239e51..6fde6ecb 100644
--- a/lang/tests/son_tests_global_variable_wiredness.txt
+++ b/lang/tests/son_tests_global_variable_wiredness.txt
@@ -2,8 +2,8 @@ inb:
     CP r1, r0
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     LRA r32, r0, :ports
     LD r33, r32, 0a, 1h
     ANDI r33, r33, 255d
@@ -15,8 +15,8 @@ main:
     CMPUI r34, r34, 0d
     NOT r34, r34
     ST r34, r32, 0a, 1h
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+ 1: LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 code size: 164
 ret: 0
diff --git a/lang/tests/son_tests_global_variables.txt b/lang/tests/son_tests_global_variables.txt
index f6547bc2..30d4fe3c 100644
--- a/lang/tests/son_tests_global_variables.txt
+++ b/lang/tests/son_tests_global_variables.txt
@@ -1,14 +1,10 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     LRA r13, r0, :complex_global_var
     LD r14, r13, 0a, 8h
     ADDI64 r14, r14, 5d
     ST r14, r13, 0a, 8h
     CP r1, r14
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 122
+code size: 74
 ret: 55
 status: Ok(())
diff --git a/lang/tests/son_tests_idk.txt b/lang/tests/son_tests_idk.txt
index 8a385b09..a58d12f3 100644
--- a/lang/tests/son_tests_idk.txt
+++ b/lang/tests/son_tests_idk.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -176d
-    ST r32, r254, 128a, 48h
+    ADDI64 r254, r254, -128d
     LI8 r15, 69b
     LI64 r16, 128d
     CP r13, r0
@@ -15,9 +14,8 @@ main:
     ST r15, r13, 0a, 1h
     CP r13, r14
     JMP :2
- 1: LD r32, r254, 128a, 48h
-    ADDI64 r254, r254, 176d
+ 1: ADDI64 r254, r254, 128d
     JALA r0, r31, 0a
-code size: 167
+code size: 141
 ret: 69
 status: Ok(())
diff --git a/lang/tests/son_tests_if_statements.txt b/lang/tests/son_tests_if_statements.txt
index 8b32e41d..287ef3c1 100644
--- a/lang/tests/son_tests_if_statements.txt
+++ b/lang/tests/son_tests_if_statements.txt
@@ -1,6 +1,6 @@
 fib:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     CP r32, r2
     LI64 r33, 1d
     LI64 r34, 2d
@@ -17,19 +17,19 @@ fib:
     CP r32, r1
     ADD64 r32, r32, r33
     CP r1, r32
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+ 1: LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     LI64 r32, 10d
     CP r2, r32
     JAL r31, r0, :fib
     CP r32, r1
     CP r1, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 code size: 229
 ret: 55
diff --git a/lang/tests/son_tests_infinite_loop_after_peephole.txt b/lang/tests/son_tests_infinite_loop_after_peephole.txt
index e4309f25..b1c96f04 100644
--- a/lang/tests/son_tests_infinite_loop_after_peephole.txt
+++ b/lang/tests/son_tests_infinite_loop_after_peephole.txt
@@ -1,13 +1,9 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r0
  0: ADDI64 r13, r13, 1d
     JMP :0
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 timed out
-code size: 86
+code size: 38
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_inline.txt b/lang/tests/son_tests_inline.txt
index c40a6f5f..93320683 100644
--- a/lang/tests/son_tests_inline.txt
+++ b/lang/tests/son_tests_inline.txt
@@ -1,6 +1,4 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     LI64 r13, 8d
     CP r2, r13
     ECA 
@@ -17,9 +15,7 @@ main:
  0: LI64 r13, 1d
  1: SUB64 r13, r13, r14
     CP r1, r13
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 179
+code size: 131
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_inline_test.txt b/lang/tests/son_tests_inline_test.txt
index 7a587941..af86bd3b 100644
--- a/lang/tests/son_tests_inline_test.txt
+++ b/lang/tests/son_tests_inline_test.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     JAL r31, r0, :scalar_values
     CP r32, r1
     JEQ r32, r0, :0
@@ -15,8 +15,8 @@ main:
     CP r1, r32
     JMP :1
  2: CP r1, r0
- 1: LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+ 1: LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 scalar_values:
     CP r1, r0
diff --git a/lang/tests/son_tests_inlined_generic_functions.txt b/lang/tests/son_tests_inlined_generic_functions.txt
index 7b61dc2f..2d6710e8 100644
--- a/lang/tests/son_tests_inlined_generic_functions.txt
+++ b/lang/tests/son_tests_inlined_generic_functions.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 10d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 80
+code size: 32
 ret: 10
 status: Ok(())
diff --git a/lang/tests/son_tests_inlining_issues.txt b/lang/tests/son_tests_inlining_issues.txt
index f1c76928..906ddf04 100644
--- a/lang/tests/son_tests_inlining_issues.txt
+++ b/lang/tests/son_tests_inlining_issues.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -130d
-    ST r31, r254, 58a, 72h
+    ADDI64 r254, r254, -122d
+    ST r31, r254, 58a, 64h
     ADDI64 r32, r254, 33d
     ADDI64 r33, r254, 34d
     ADDI64 r34, r254, 1d
@@ -22,12 +22,11 @@ main:
     LD r5, r34, 0a, 16h
     LD r7, r37, 0a, 1h
     JAL r31, r0, :put_filled_rect
-    LD r31, r254, 58a, 72h
-    ADDI64 r254, r254, 130d
+    LD r31, r254, 58a, 64h
+    ADDI64 r254, r254, 122d
     JALA r0, r31, 0a
 put_filled_rect:
-    ADDI64 r254, r254, -236d
-    ST r32, r254, 108a, 128h
+    ADDI64 r254, r254, -108d
     CP r14, r2
     ST r3, r254, 92a, 16h
     ADDI64 r3, r254, 92d
@@ -98,9 +97,8 @@ put_filled_rect:
     ADD64 r14, r27, r14
     SUB64 r13, r13, r18
     JMP :3
- 2: LD r32, r254, 108a, 128h
-    ADDI64 r254, r254, 236d
+ 2: ADDI64 r254, r254, 108d
     JALA r0, r31, 0a
-code size: 901
+code size: 875
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_intcast_store.txt b/lang/tests/son_tests_intcast_store.txt
index b9a12d6a..77e8cd42 100644
--- a/lang/tests/son_tests_intcast_store.txt
+++ b/lang/tests/son_tests_intcast_store.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -56d
-    ST r31, r254, 16a, 40h
+    ADDI64 r254, r254, -48d
+    ST r31, r254, 16a, 32h
     ADDI64 r32, r254, 0d
     ADDI64 r33, r254, 8d
     ST r0, r254, 0a, 8h
@@ -13,17 +13,13 @@ main:
     CP r32, r1
     ANDI r32, r32, 4294967295d
     CP r1, r32
-    LD r31, r254, 16a, 40h
-    ADDI64 r254, r254, 56d
+    LD r31, r254, 16a, 32h
+    ADDI64 r254, r254, 48d
     JALA r0, r31, 0a
 set:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r4
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 223
+code size: 175
 ret: 1024
 status: Ok(())
diff --git a/lang/tests/son_tests_integer_inference_issues.txt b/lang/tests/son_tests_integer_inference_issues.txt
index b62454fd..7eea799c 100644
--- a/lang/tests/son_tests_integer_inference_issues.txt
+++ b/lang/tests/son_tests_integer_inference_issues.txt
@@ -1,6 +1,4 @@
 integer_range:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 0a, 32h
     CP r13, r2
     CP r14, r3
     LI64 r15, 4d
@@ -14,19 +12,17 @@ integer_range:
     DIRU64 r0, r14, r15, r14
     ADD64 r13, r14, r13
     CP r1, r13
-    LD r32, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     LI64 r32, 1000d
     CP r2, r0
     CP r3, r32
     JAL r31, r0, :integer_range
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 212
+code size: 164
 ret: 42
 status: Ok(())
diff --git a/lang/tests/son_tests_loop_stores.txt b/lang/tests/son_tests_loop_stores.txt
index b746c5b6..0a45788d 100644
--- a/lang/tests/son_tests_loop_stores.txt
+++ b/lang/tests/son_tests_loop_stores.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 8a, 8h
+    ADDI64 r254, r254, -8d
     LI64 r13, 10d
     ST r13, r254, 0a, 8h
  2: LD r13, r254, 0a, 8h
@@ -10,9 +9,8 @@ main:
  0: ADDI64 r13, r13, -1d
     ST r13, r254, 0a, 8h
     JMP :2
- 1: LD r32, r254, 8a, 8h
-    ADDI64 r254, r254, 16d
+ 1: ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 145
+code size: 119
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_loops.txt b/lang/tests/son_tests_loops.txt
index a3318cd8..74632368 100644
--- a/lang/tests/son_tests_loops.txt
+++ b/lang/tests/son_tests_loops.txt
@@ -1,6 +1,4 @@
 fib:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 0a, 40h
     CP r13, r2
     LI64 r17, 1d
     CP r15, r0
@@ -13,20 +11,18 @@ fib:
     SUB64 r13, r13, r17
     SWA r14, r16
     JMP :2
- 1: LD r32, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
+ 1: JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     LI64 r32, 10d
     CP r2, r32
     JAL r31, r0, :fib
     CP r32, r1
     CP r1, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 203
+code size: 155
 ret: 55
 status: Ok(())
diff --git a/lang/tests/son_tests_main_fn.txt b/lang/tests/son_tests_main_fn.txt
index 48205d74..47c0a5ed 100644
--- a/lang/tests/son_tests_main_fn.txt
+++ b/lang/tests/son_tests_main_fn.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 1d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 80
+code size: 32
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_memory_swap.txt b/lang/tests/son_tests_memory_swap.txt
index 0dbc2d97..ceccb911 100644
--- a/lang/tests/son_tests_memory_swap.txt
+++ b/lang/tests/son_tests_memory_swap.txt
@@ -1,6 +1,5 @@
 decide:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 24a, 16h
+    ADDI64 r254, r254, -24d
     CP r14, r2
     CP r15, r1
     ADDI64 r13, r254, 0d
@@ -8,12 +7,11 @@ decide:
     ST r0, r254, 8a, 8h
     ST r0, r254, 16a, 8h
     BMC r13, r15, 24h
-    LD r32, r254, 24a, 16h
-    ADDI64 r254, r254, 40d
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -128d
-    ST r31, r254, 72a, 56h
+    ADDI64 r254, r254, -120d
+    ST r31, r254, 72a, 48h
     ADDI64 r32, r254, 48d
     CP r2, r0
     CP r1, r32
@@ -30,9 +28,9 @@ main:
     LD r33, r254, 0a, 8h
     ADD64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 72a, 56h
-    ADDI64 r254, r254, 128d
+    LD r31, r254, 72a, 48h
+    ADDI64 r254, r254, 120d
     JALA r0, r31, 0a
-code size: 299
+code size: 273
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_more_if_opts.txt b/lang/tests/son_tests_more_if_opts.txt
index c53e42d8..732ddd16 100644
--- a/lang/tests/son_tests_more_if_opts.txt
+++ b/lang/tests/son_tests_more_if_opts.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     JAL r31, r0, :opaque
     CP r33, r1
     JAL r31, r0, :opaque
@@ -12,8 +12,8 @@ main:
     LD r32, r33, 0a, 8h
     JMP :2
  2: CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 opaque:
     CP r1, r0
diff --git a/lang/tests/son_tests_null_check_in_the_loop.txt b/lang/tests/son_tests_null_check_in_the_loop.txt
index 333a3680..93b6fbb6 100644
--- a/lang/tests/son_tests_null_check_in_the_loop.txt
+++ b/lang/tests/son_tests_null_check_in_the_loop.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -38d
-    ST r31, r254, 6a, 32h
+    ADDI64 r254, r254, -30d
+    ST r31, r254, 6a, 24h
     ADDI64 r32, r254, 0d
  2: JAL r31, r0, :return_fn
     ST r1, r32, 0a, 6h
@@ -11,12 +11,11 @@ main:
     CP r1, r32
     JMP :1
  0: JMP :2
- 1: LD r31, r254, 6a, 32h
-    ADDI64 r254, r254, 38d
+ 1: LD r31, r254, 6a, 24h
+    ADDI64 r254, r254, 30d
     JALA r0, r31, 0a
 return_fn:
-    ADDI64 r254, r254, -22d
-    ST r32, r254, 6a, 16h
+    ADDI64 r254, r254, -6d
     LI8 r13, 1b
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 1h
@@ -26,9 +25,8 @@ return_fn:
     ST r0, r254, 4a, 1h
     ST r0, r254, 5a, 1h
     LD r1, r14, 0a, 6h
-    LD r32, r254, 6a, 16h
-    ADDI64 r254, r254, 22d
+    ADDI64 r254, r254, 6d
     JALA r0, r31, 0a
-code size: 314
+code size: 288
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_null_check_returning_small_global.txt b/lang/tests/son_tests_null_check_returning_small_global.txt
index 98a79a18..fc8fe55d 100644
--- a/lang/tests/son_tests_null_check_returning_small_global.txt
+++ b/lang/tests/son_tests_null_check_returning_small_global.txt
@@ -1,6 +1,6 @@
 foo:
-    ADDI64 r254, r254, -120d
-    ST r31, r254, 80a, 40h
+    ADDI64 r254, r254, -112d
+    ST r31, r254, 80a, 32h
     ADDI64 r32, r254, 64d
     LRA r33, r0, :some_file
     CP r3, r33
@@ -34,12 +34,11 @@ foo:
  3: ADDI64 r32, r254, 0d
     ST r0, r254, 0a, 1h
     LD r1, r32, 0a, 16h
- 1: LD r31, r254, 80a, 40h
-    ADDI64 r254, r254, 120d
+ 1: LD r31, r254, 80a, 32h
+    ADDI64 r254, r254, 112d
     JALA r0, r31, 0a
 get:
-    ADDI64 r254, r254, -56d
-    ST r32, r254, 32a, 24h
+    ADDI64 r254, r254, -32d
     CP r13, r3
     LD r13, r13, 0a, 1h
     LRA r14, r0, :MAGIC
@@ -55,12 +54,11 @@ get:
  0: ADDI64 r13, r254, 0d
     ST r0, r254, 0a, 1h
     LD r1, r13, 0a, 16h
- 1: LD r32, r254, 32a, 24h
-    ADDI64 r254, r254, 56d
+ 1: ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 16a, 32h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 16a, 24h
     ADDI64 r32, r254, 0d
     JAL r31, r0, :foo
     ST r1, r32, 0a, 16h
@@ -72,9 +70,9 @@ main:
     JMP :1
  0: LD r32, r254, 8a, 8h
     CP r1, r32
- 1: LD r31, r254, 16a, 32h
-    ADDI64 r254, r254, 48d
+ 1: LD r31, r254, 16a, 24h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
-code size: 765
+code size: 739
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_null_check_test.txt b/lang/tests/son_tests_null_check_test.txt
index 5e244eda..b9980b02 100644
--- a/lang/tests/son_tests_null_check_test.txt
+++ b/lang/tests/son_tests_null_check_test.txt
@@ -2,8 +2,8 @@ get_ptr:
     CP r1, r0
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     JAL r31, r0, :get_ptr
     CP r32, r1
     JNE r32, r0, :0
@@ -16,8 +16,8 @@ main:
     ST r34, r32, 0a, 8h
     JMP :3
  2: CP r1, r34
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+ 1: LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 code size: 164
 ret: 0
diff --git a/lang/tests/son_tests_nullable_structure.txt b/lang/tests/son_tests_nullable_structure.txt
index 9b7407ac..a7550782 100644
--- a/lang/tests/son_tests_nullable_structure.txt
+++ b/lang/tests/son_tests_nullable_structure.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -74d
-    ST r31, r254, 26a, 48h
+    ADDI64 r254, r254, -66d
+    ST r31, r254, 26a, 40h
     JAL r31, r0, :returner_fn
     CP r32, r1
     ADDI64 r33, r254, 2d
@@ -25,12 +25,11 @@ main:
     JMP :1
  0: LI64 r32, 1d
     CP r1, r32
- 1: LD r31, r254, 26a, 48h
-    ADDI64 r254, r254, 74d
+ 1: LD r31, r254, 26a, 40h
+    ADDI64 r254, r254, 66d
     JALA r0, r31, 0a
 returner_bn:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 24a, 16h
+    ADDI64 r254, r254, -24d
     CP r15, r1
     LI8 r14, 1b
     ADDI64 r13, r254, 0d
@@ -38,29 +37,22 @@ returner_bn:
     ST r0, r254, 8a, 8h
     ST r0, r254, 16a, 8h
     BMC r13, r15, 24h
-    LD r32, r254, 24a, 16h
-    ADDI64 r254, r254, 40d
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 returner_cn:
-    ADDI64 r254, r254, -18d
-    ST r32, r254, 2a, 16h
+    ADDI64 r254, r254, -2d
     LI8 r13, 1b
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 1h
     ST r0, r254, 1a, 1h
     LD r1, r14, 0a, 2h
-    LD r32, r254, 2a, 16h
-    ADDI64 r254, r254, 18d
+    ADDI64 r254, r254, 2d
     JALA r0, r31, 0a
 returner_fn:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LD r13, r254, 0a, 0h
     ORI r13, r13, 128d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 563
+code size: 463
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_nullable_types.txt b/lang/tests/son_tests_nullable_types.txt
index ad4afa5e..dfd596a5 100644
--- a/lang/tests/son_tests_nullable_types.txt
+++ b/lang/tests/son_tests_nullable_types.txt
@@ -1,14 +1,10 @@
 decide:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI8 r13, 1b
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -136d
-    ST r31, r254, 80a, 56h
+    ADDI64 r254, r254, -128d
+    ST r31, r254, 80a, 48h
     JAL r31, r0, :decide
     CP r32, r1
     CP r33, r0
@@ -102,12 +98,11 @@ main:
     ANDI r32, r32, 65535d
     SUB64 r32, r32, r33
     CP r1, r32
- 3: LD r31, r254, 80a, 56h
-    ADDI64 r254, r254, 136d
+ 3: LD r31, r254, 80a, 48h
+    ADDI64 r254, r254, 128d
     JALA r0, r31, 0a
 new_bar:
-    ADDI64 r254, r254, -48d
-    ST r32, r254, 24a, 24h
+    ADDI64 r254, r254, -24d
     CP r14, r2
     CP r16, r1
     LI8 r15, 1b
@@ -117,28 +112,23 @@ new_bar:
     LI64 r14, 1d
     ST r14, r254, 16a, 8h
     BMC r13, r16, 24h
-    LD r32, r254, 24a, 24h
-    ADDI64 r254, r254, 48d
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 new_foo:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 24a, 16h
+    ADDI64 r254, r254, -24d
     ADDI64 r13, r254, 0d
     ADDI64 r14, r254, 8d
     ST r13, r254, 8a, 8h
     ST r0, r254, 16a, 8h
     LD r1, r14, 0a, 16h
-    LD r32, r254, 24a, 16h
-    ADDI64 r254, r254, 40d
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 no_foo:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 16a, 8h
+    ADDI64 r254, r254, -16d
     ADDI64 r13, r254, 0d
     ST r0, r254, 0a, 8h
     LD r1, r13, 0a, 16h
-    LD r32, r254, 16a, 8h
-    ADDI64 r254, r254, 24d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 use_foo:
     ADDI64 r254, r254, -16d
@@ -146,6 +136,6 @@ use_foo:
     ADDI64 r2, r254, 0d
     ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 1240
+code size: 1114
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_only_break_loop.txt b/lang/tests/son_tests_only_break_loop.txt
index b491767e..e70c7941 100644
--- a/lang/tests/son_tests_only_break_loop.txt
+++ b/lang/tests/son_tests_only_break_loop.txt
@@ -1,14 +1,10 @@
 inb:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     LI64 r32, 100d
  4: CP r2, r32
     JAL r31, r0, :inb
@@ -28,11 +24,11 @@ main:
     JMP :2
  1: JMP :3
  0: JMP :4
- 2: LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+ 2: LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
 outb:
     JALA r0, r31, 0a
-code size: 251
+code size: 203
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_optional_from_eca.txt b/lang/tests/son_tests_optional_from_eca.txt
index 300709ec..1e74ce86 100644
--- a/lang/tests/son_tests_optional_from_eca.txt
+++ b/lang/tests/son_tests_optional_from_eca.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 16a, 16h
+    ADDI64 r254, r254, -16d
     ADDI64 r13, r254, 0d
     CP r3, r0
     CP r4, r0
@@ -14,10 +13,9 @@ main:
     UN 
  0: LD r13, r254, 8a, 8h
     CP r1, r13
-    LD r32, r254, 16a, 16h
-    ADDI64 r254, r254, 32d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 unknown ecall: 0
-code size: 150
+code size: 124
 ret: 0
 status: Err(Unreachable)
diff --git a/lang/tests/son_tests_overwrite_aliasing_overoptimization.txt b/lang/tests/son_tests_overwrite_aliasing_overoptimization.txt
index bcc7b93b..5d53583a 100644
--- a/lang/tests/son_tests_overwrite_aliasing_overoptimization.txt
+++ b/lang/tests/son_tests_overwrite_aliasing_overoptimization.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -72d
-    ST r31, r254, 24a, 48h
+    ADDI64 r254, r254, -64d
+    ST r31, r254, 24a, 40h
     ADDI64 r32, r254, 0d
     LI64 r33, 1d
     ST r33, r254, 16a, 8h
@@ -15,21 +15,19 @@ main:
     LD r32, r254, 0a, 8h
     SUB64 r32, r32, r34
     CP r1, r32
-    LD r31, r254, 24a, 48h
-    ADDI64 r254, r254, 72d
+    LD r31, r254, 24a, 40h
+    ADDI64 r254, r254, 64d
     JALA r0, r31, 0a
 opaque:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 16a, 16h
+    ADDI64 r254, r254, -16d
     LI64 r13, 3d
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 8h
     LI64 r13, 2d
     ST r13, r254, 8a, 8h
     LD r1, r14, 0a, 16h
-    LD r32, r254, 16a, 16h
-    ADDI64 r254, r254, 32d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 336
+code size: 310
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_pointer_opts.txt b/lang/tests/son_tests_pointer_opts.txt
index 89462c1a..9001210e 100644
--- a/lang/tests/son_tests_pointer_opts.txt
+++ b/lang/tests/son_tests_pointer_opts.txt
@@ -1,15 +1,11 @@
 clobber:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r13, r2
     LI64 r14, 4d
     ST r14, r13, 0a, 8h
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 8a, 32h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 8a, 24h
     ADDI64 r32, r254, 0d
     LI64 r33, 2d
     ST r33, r254, 0a, 8h
@@ -19,9 +15,9 @@ main:
     LI64 r33, 4d
     SUB64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 8a, 32h
-    ADDI64 r254, r254, 40d
+    LD r31, r254, 8a, 24h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
-code size: 226
+code size: 178
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_pointers.txt b/lang/tests/son_tests_pointers.txt
index b74bd3be..0c5b1e13 100644
--- a/lang/tests/son_tests_pointers.txt
+++ b/lang/tests/son_tests_pointers.txt
@@ -1,8 +1,8 @@
 drop:
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 8a, 32h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 8a, 24h
     ADDI64 r32, r254, 0d
     LI64 r33, 1d
     ST r33, r254, 0a, 8h
@@ -13,18 +13,14 @@ main:
     LD r32, r254, 0a, 8h
     ADDI64 r32, r32, -2d
     CP r1, r32
-    LD r31, r254, 8a, 32h
-    ADDI64 r254, r254, 40d
+    LD r31, r254, 8a, 24h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 modify:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r13, r2
     LI64 r14, 2d
     ST r14, r13, 0a, 8h
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 244
+code size: 196
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_request_page.txt b/lang/tests/son_tests_request_page.txt
index 9cc0b1a3..2b7f0ae5 100644
--- a/lang/tests/son_tests_request_page.txt
+++ b/lang/tests/son_tests_request_page.txt
@@ -1,6 +1,6 @@
 create_back_buffer:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 0a, 48h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 0a, 40h
     CP r32, r2
     LI64 r33, 255d
     JGTS r32, r33, :0
@@ -25,21 +25,19 @@ create_back_buffer:
     JAL r31, r0, :request_page
  4: SUB64 r32, r32, r33
     JMP :5
- 1: LD r31, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
+ 1: LD r31, r254, 0a, 40h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     LI64 r32, 400d
     CP r2, r32
     JAL r31, r0, :create_back_buffer
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 request_page:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 0a, 32h
     CP r13, r2
     LRA r14, r0, :"\0\u{1}xxxxxxxx\0"
     ST r13, r14, 1a, 1h
@@ -53,9 +51,7 @@ request_page:
     ECA 
     CP r13, r1
     CP r1, r13
-    LD r32, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
-code size: 399
+code size: 351
 ret: 42
 status: Ok(())
diff --git a/lang/tests/son_tests_returning_global_struct.txt b/lang/tests/son_tests_returning_global_struct.txt
index d6b621ef..c52dcf99 100644
--- a/lang/tests/son_tests_returning_global_struct.txt
+++ b/lang/tests/son_tests_returning_global_struct.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -60d
-    ST r31, r254, 4a, 56h
+    ADDI64 r254, r254, -52d
+    ST r31, r254, 4a, 48h
     ADDI64 r32, r254, 0d
     JAL r31, r0, :random_color
     ST r1, r32, 0a, 4h
@@ -16,17 +16,13 @@ main:
     ADD64 r33, r34, r33
     ADD64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 4a, 56h
-    ADDI64 r254, r254, 60d
+    LD r31, r254, 4a, 48h
+    ADDI64 r254, r254, 52d
     JALA r0, r31, 0a
 random_color:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LRA r13, r0, :white
     LD r1, r13, 0a, 4h
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 292
+code size: 244
 ret: 1020
 status: Ok(())
diff --git a/lang/tests/son_tests_returning_optional_issues.txt b/lang/tests/son_tests_returning_optional_issues.txt
index 93effff6..5b0422d5 100644
--- a/lang/tests/son_tests_returning_optional_issues.txt
+++ b/lang/tests/son_tests_returning_optional_issues.txt
@@ -1,6 +1,5 @@
 get_format:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 16a, 24h
+    ADDI64 r254, r254, -16d
     LI8 r13, 1b
     ADDI64 r14, r254, 0d
     LRA r15, r0, :BMP
@@ -8,12 +7,11 @@ get_format:
     LD r13, r15, 0a, 8h
     ST r13, r254, 8a, 8h
     LD r1, r14, 0a, 16h
-    LD r32, r254, 16a, 24h
-    ADDI64 r254, r254, 40d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 16a, 32h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 16a, 24h
     ADDI64 r32, r254, 0d
     JAL r31, r0, :get_format
     ST r1, r32, 0a, 16h
@@ -25,9 +23,9 @@ main:
     JMP :1
  0: LD r32, r254, 8a, 8h
     CP r1, r32
- 1: LD r31, r254, 16a, 32h
-    ADDI64 r254, r254, 48d
+ 1: LD r31, r254, 16a, 24h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
-code size: 301
+code size: 275
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_scheduling_block_did_dirty.txt b/lang/tests/son_tests_scheduling_block_did_dirty.txt
index 5cc1da21..2b2e7fd6 100644
--- a/lang/tests/son_tests_scheduling_block_did_dirty.txt
+++ b/lang/tests/son_tests_scheduling_block_did_dirty.txt
@@ -1,6 +1,6 @@
 constructor:
-    ADDI64 r254, r254, -48d
-    ST r31, r254, 16a, 32h
+    ADDI64 r254, r254, -40d
+    ST r31, r254, 16a, 24h
     CP r32, r3
     CP r2, r32
     JAL r31, r0, :opaque
@@ -9,31 +9,27 @@ constructor:
     ST r32, r254, 0a, 8h
     ST r32, r254, 8a, 8h
     LD r1, r33, 0a, 16h
-    LD r31, r254, 16a, 32h
-    ADDI64 r254, r254, 48d
+    LD r31, r254, 16a, 24h
+    ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 16a, 24h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 16a, 16h
     ADDI64 r32, r254, 0d
     CP r3, r0
     JAL r31, r0, :constructor
     ST r1, r32, 0a, 16h
-    LD r31, r254, 16a, 24h
-    ADDI64 r254, r254, 40d
+    LD r31, r254, 16a, 16h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 opaque:
-    ADDI64 r254, r254, -16d
-    ST r32, r254, 0a, 16h
     CP r13, r2
     LRA r14, r0, :file
     ADD64 r13, r14, r13
     LD r13, r13, 0a, 1h
     ANDI r13, r13, 255d
     CP r1, r13
-    LD r32, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
-code size: 327
+code size: 279
 ret: 255
 status: Ok(())
diff --git a/lang/tests/son_tests_signed_to_unsigned_upcast.txt b/lang/tests/son_tests_signed_to_unsigned_upcast.txt
index 48205d74..47c0a5ed 100644
--- a/lang/tests/son_tests_signed_to_unsigned_upcast.txt
+++ b/lang/tests/son_tests_signed_to_unsigned_upcast.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 1d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 80
+code size: 32
 ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_small_struct_assignment.txt b/lang/tests/son_tests_small_struct_assignment.txt
index 61400cb0..b1ceadec 100644
--- a/lang/tests/son_tests_small_struct_assignment.txt
+++ b/lang/tests/son_tests_small_struct_assignment.txt
@@ -1,15 +1,13 @@
 main:
-    ADDI64 r254, r254, -20d
-    ST r32, r254, 4a, 16h
+    ADDI64 r254, r254, -4d
     LRA r13, r0, :white
     ADDI64 r14, r254, 0d
     BMC r13, r14, 4h
     LD r13, r254, 3a, 1h
     ANDI r13, r13, 255d
     CP r1, r13
-    LD r32, r254, 4a, 16h
-    ADDI64 r254, r254, 20d
+    ADDI64 r254, r254, 4d
     JALA r0, r31, 0a
-code size: 121
+code size: 95
 ret: 255
 status: Ok(())
diff --git a/lang/tests/son_tests_small_struct_bitcast.txt b/lang/tests/son_tests_small_struct_bitcast.txt
index 50a97115..c9344098 100644
--- a/lang/tests/son_tests_small_struct_bitcast.txt
+++ b/lang/tests/son_tests_small_struct_bitcast.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -36d
-    ST r31, r254, 4a, 32h
+    ADDI64 r254, r254, -28d
+    ST r31, r254, 4a, 24h
     LRA r32, r0, :white
     ADDI64 r33, r254, 0d
     LD r32, r32, 0a, 4h
@@ -10,12 +10,12 @@ main:
     LD r32, r254, 0a, 1h
     ANDI r32, r32, 255d
     CP r1, r32
-    LD r31, r254, 4a, 32h
-    ADDI64 r254, r254, 36d
+    LD r31, r254, 4a, 24h
+    ADDI64 r254, r254, 28d
     JALA r0, r31, 0a
 u32_to_color:
-    ADDI64 r254, r254, -36d
-    ST r31, r254, 4a, 32h
+    ADDI64 r254, r254, -28d
+    ST r31, r254, 4a, 24h
     CP r32, r2
     CP r2, r32
     JAL r31, r0, :u32_to_u32
@@ -23,17 +23,13 @@ u32_to_color:
     ADDI64 r33, r254, 0d
     ST r32, r254, 0a, 4h
     LD r1, r33, 0a, 4h
-    LD r31, r254, 4a, 32h
-    ADDI64 r254, r254, 36d
+    LD r31, r254, 4a, 24h
+    ADDI64 r254, r254, 28d
     JALA r0, r31, 0a
 u32_to_u32:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 329
+code size: 281
 ret: 255
 status: Ok(())
diff --git a/lang/tests/son_tests_some_generic_code.txt b/lang/tests/son_tests_some_generic_code.txt
index 244aa5ed..cfd61e96 100644
--- a/lang/tests/son_tests_some_generic_code.txt
+++ b/lang/tests/son_tests_some_generic_code.txt
@@ -1,9 +1,9 @@
 main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
+    ADDI64 r254, r254, -8d
+    ST r31, r254, 0a, 8h
     JAL r31, r0, :some_func
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
+    LD r31, r254, 0a, 8h
+    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 some_func:
     JALA r0, r31, 0a
diff --git a/lang/tests/son_tests_sort_something_viredly.txt b/lang/tests/son_tests_sort_something_viredly.txt
index 297d5f26..2351a62e 100644
--- a/lang/tests/son_tests_sort_something_viredly.txt
+++ b/lang/tests/son_tests_sort_something_viredly.txt
@@ -1,17 +1,15 @@
 main:
-    ADDI64 r254, r254, -24d
-    ST r31, r254, 0a, 24h
+    ADDI64 r254, r254, -16d
+    ST r31, r254, 0a, 16h
     LI64 r32, 100d
     CP r2, r32
     JAL r31, r0, :sqrt
     CP r32, r1
     CP r1, r32
-    LD r31, r254, 0a, 24h
-    ADDI64 r254, r254, 24d
+    LD r31, r254, 0a, 16h
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 sqrt:
-    ADDI64 r254, r254, -48d
-    ST r32, r254, 0a, 48h
     CP r13, r2
     LI64 r16, 15d
     LI64 r15, 32768d
@@ -30,9 +28,7 @@ sqrt:
     JMP :2
  2: SRUI64 r15, r15, 1b
     JMP :3
- 1: LD r32, r254, 0a, 48h
-    ADDI64 r254, r254, 48d
-    JALA r0, r31, 0a
-code size: 244
+ 1: JALA r0, r31, 0a
+code size: 196
 ret: 14
 status: Ok(())
diff --git a/lang/tests/son_tests_storing_into_nullable_struct.txt b/lang/tests/son_tests_storing_into_nullable_struct.txt
index 06f1c068..9e4dacf7 100644
--- a/lang/tests/son_tests_storing_into_nullable_struct.txt
+++ b/lang/tests/son_tests_storing_into_nullable_struct.txt
@@ -1,16 +1,12 @@
 do_stuff:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 just_read:
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -88d
-    ST r31, r254, 48a, 40h
+    ADDI64 r254, r254, -80d
+    ST r31, r254, 48a, 32h
     ADDI64 r32, r254, 16d
     CP r1, r32
     JAL r31, r0, :optionala
@@ -41,24 +37,21 @@ main:
     CP r33, r1
     ADD64 r32, r33, r32
     CP r1, r32
- 1: LD r31, r254, 48a, 40h
-    ADDI64 r254, r254, 88d
+ 1: LD r31, r254, 48a, 32h
+    ADDI64 r254, r254, 80d
     JALA r0, r31, 0a
 optional:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 16a, 16h
+    ADDI64 r254, r254, -16d
     LI8 r13, 1b
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 1h
     LI64 r13, 10d
     ST r13, r254, 8a, 8h
     LD r1, r14, 0a, 16h
-    LD r32, r254, 16a, 16h
-    ADDI64 r254, r254, 32d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 optionala:
-    ADDI64 r254, r254, -80d
-    ST r32, r254, 48a, 32h
+    ADDI64 r254, r254, -48d
     CP r17, r1
     ADDI64 r14, r254, 8d
     ADDI64 r15, r254, 16d
@@ -71,9 +64,8 @@ optionala:
     ST r0, r254, 8a, 8h
     ST r0, r254, 40a, 8h
     BMC r15, r17, 32h
-    LD r32, r254, 48a, 32h
-    ADDI64 r254, r254, 80d
+    ADDI64 r254, r254, 48d
     JALA r0, r31, 0a
-code size: 667
+code size: 567
 ret: 100
 status: Ok(())
diff --git a/lang/tests/son_tests_string_flip.txt b/lang/tests/son_tests_string_flip.txt
index 891f3095..351d7a3d 100644
--- a/lang/tests/son_tests_string_flip.txt
+++ b/lang/tests/son_tests_string_flip.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -128d
-    ST r32, r254, 40a, 88h
+    ADDI64 r254, r254, -40d
     LI64 r17, 1d
     LI64 r16, 4d
     CP r14, r0
@@ -40,9 +39,8 @@ main:
     ST r13, r19, 0a, 8h
     CP r13, r15
     JMP :6
- 2: LD r32, r254, 40a, 88h
-    ADDI64 r254, r254, 128d
+ 2: ADDI64 r254, r254, 40d
     JALA r0, r31, 0a
-code size: 296
+code size: 270
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_struct_in_register.txt b/lang/tests/son_tests_struct_in_register.txt
index b7147bb9..ffac3b1e 100644
--- a/lang/tests/son_tests_struct_in_register.txt
+++ b/lang/tests/son_tests_struct_in_register.txt
@@ -1,15 +1,13 @@
 main:
-    ADDI64 r254, r254, -20d
-    ST r32, r254, 4a, 16h
+    ADDI64 r254, r254, -4d
     LRA r13, r0, :MAGENTA
     ADDI64 r14, r254, 0d
     BMC r13, r14, 4h
     LD r13, r254, 2a, 1h
     ANDI r13, r13, 255d
     CP r1, r13
-    LD r32, r254, 4a, 16h
-    ADDI64 r254, r254, 20d
+    ADDI64 r254, r254, 4d
     JALA r0, r31, 0a
-code size: 121
+code size: 95
 ret: 205
 status: Ok(())
diff --git a/lang/tests/son_tests_struct_operators.txt b/lang/tests/son_tests_struct_operators.txt
index 7b61dc2f..2d6710e8 100644
--- a/lang/tests/son_tests_struct_operators.txt
+++ b/lang/tests/son_tests_struct_operators.txt
@@ -1,11 +1,7 @@
 main:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 10d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 80
+code size: 32
 ret: 10
 status: Ok(())
diff --git a/lang/tests/son_tests_struct_patterns.txt b/lang/tests/son_tests_struct_patterns.txt
index 6c9b0384..1a0cb139 100644
--- a/lang/tests/son_tests_struct_patterns.txt
+++ b/lang/tests/son_tests_struct_patterns.txt
@@ -1,6 +1,6 @@
 fib:
-    ADDI64 r254, r254, -40d
-    ST r31, r254, 0a, 40h
+    ADDI64 r254, r254, -32d
+    ST r31, r254, 0a, 32h
     CP r32, r2
     LI64 r33, 2d
     JLTU r32, r33, :0
@@ -16,12 +16,10 @@ fib:
     CP r1, r32
     JMP :1
  0: CP r1, r32
- 1: LD r31, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
+ 1: LD r31, r254, 0a, 32h
+    ADDI64 r254, r254, 32d
     JALA r0, r31, 0a
 fib_iter:
-    ADDI64 r254, r254, -40d
-    ST r32, r254, 0a, 40h
     CP r13, r2
     LI64 r17, 1d
     CP r15, r0
@@ -34,12 +32,10 @@ fib_iter:
     SUB64 r13, r13, r17
     SWA r14, r16
     JMP :2
- 1: LD r32, r254, 0a, 40h
-    ADDI64 r254, r254, 40d
-    JALA r0, r31, 0a
+ 1: JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -32d
-    ST r31, r254, 0a, 32h
+    ADDI64 r254, r254, -24d
+    ST r31, r254, 0a, 24h
     LI64 r32, 10d
     CP r2, r32
     JAL r31, r0, :fib
@@ -49,9 +45,9 @@ main:
     CP r32, r1
     SUB64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 0a, 32h
-    ADDI64 r254, r254, 32d
+    LD r31, r254, 0a, 24h
+    ADDI64 r254, r254, 24d
     JALA r0, r31, 0a
-code size: 353
+code size: 305
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_struct_return_from_module_function.txt b/lang/tests/son_tests_struct_return_from_module_function.txt
index 1d38b391..b5687ac7 100644
--- a/lang/tests/son_tests_struct_return_from_module_function.txt
+++ b/lang/tests/son_tests_struct_return_from_module_function.txt
@@ -1,6 +1,5 @@
 foo:
-    ADDI64 r254, r254, -32d
-    ST r32, r254, 16a, 16h
+    ADDI64 r254, r254, -16d
     LI64 r13, 3d
     ADDI64 r14, r254, 0d
     ST r13, r254, 0a, 8h
@@ -8,12 +7,11 @@ foo:
     ST r13, r254, 8a, 4h
     ST r13, r254, 12a, 4h
     LD r1, r14, 0a, 16h
-    LD r32, r254, 16a, 16h
-    ADDI64 r254, r254, 32d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -96d
-    ST r31, r254, 48a, 48h
+    ADDI64 r254, r254, -88d
+    ST r31, r254, 48a, 40h
     ADDI64 r32, r254, 32d
     JAL r31, r0, :foo
     ST r1, r32, 0a, 16h
@@ -33,9 +31,9 @@ main:
     LI64 r33, 7d
     SUB64 r32, r33, r32
     CP r1, r32
-    LD r31, r254, 48a, 48h
-    ADDI64 r254, r254, 96d
+    LD r31, r254, 48a, 40h
+    ADDI64 r254, r254, 88d
     JALA r0, r31, 0a
-code size: 384
+code size: 358
 ret: 0
 status: Ok(())
diff --git a/lang/tests/son_tests_structs.txt b/lang/tests/son_tests_structs.txt
index 3b354eba..f25ab466 100644
--- a/lang/tests/son_tests_structs.txt
+++ b/lang/tests/son_tests_structs.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -72d
-    ST r31, r254, 32a, 40h
+    ADDI64 r254, r254, -64d
+    ST r31, r254, 32a, 32h
     LI64 r32, 4d
     ADDI64 r33, r254, 16d
     ST r32, r254, 16a, 8h
@@ -18,28 +18,22 @@ main:
     CP r1, r32
     JMP :1
  0: CP r1, r0
- 1: LD r31, r254, 32a, 40h
-    ADDI64 r254, r254, 72d
+ 1: LD r31, r254, 32a, 32h
+    ADDI64 r254, r254, 64d
     JALA r0, r31, 0a
 odher_pass:
-    ADDI64 r254, r254, -24d
-    ST r32, r254, 16a, 8h
+    ADDI64 r254, r254, -16d
     ST r3, r254, 0a, 16h
     ADDI64 r3, r254, 0d
     CP r13, r3
     LD r1, r13, 0a, 16h
-    LD r32, r254, 16a, 8h
-    ADDI64 r254, r254, 24d
+    ADDI64 r254, r254, 16d
     JALA r0, r31, 0a
 pass:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     CP r13, r2
     LD r13, r13, 0a, 8h
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
-code size: 387
+code size: 313
 ret: 4
 status: Ok(())
diff --git a/lang/tests/son_tests_tests_ptr_to_ptr_copy.txt b/lang/tests/son_tests_tests_ptr_to_ptr_copy.txt
index 0aee892d..22ae15ad 100644
--- a/lang/tests/son_tests_tests_ptr_to_ptr_copy.txt
+++ b/lang/tests/son_tests_tests_ptr_to_ptr_copy.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -10288d
-    ST r32, r254, 10240a, 48h
+    ADDI64 r254, r254, -10240d
     LI64 r14, 1d
     LI8 r16, 64b
     LI64 r17, 1024d
@@ -25,9 +24,8 @@ main:
     ST r16, r13, 0a, 1h
     CP r13, r15
     JMP :4
- 2: LD r32, r254, 10240a, 48h
-    ADDI64 r254, r254, 10288d
+ 2: ADDI64 r254, r254, 10240d
     JALA r0, r31, 0a
-code size: 220
+code size: 194
 ret: 64
 status: Ok(())
diff --git a/lang/tests/son_tests_triggering_store_in_divergent_branch.txt b/lang/tests/son_tests_triggering_store_in_divergent_branch.txt
index d103e495..89b8321d 100644
--- a/lang/tests/son_tests_triggering_store_in_divergent_branch.txt
+++ b/lang/tests/son_tests_triggering_store_in_divergent_branch.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -72d
-    ST r31, r254, 0a, 72h
+    ADDI64 r254, r254, -64d
+    ST r31, r254, 0a, 64h
     CP r34, r0
     LI64 r37, 65536d
     LI8 r35, 1b
@@ -25,18 +25,14 @@ main:
  6: JMP :7
  4: ADDI64 r33, r33, 1d
     JMP :8
- 1: LD r31, r254, 0a, 72h
-    ADDI64 r254, r254, 72d
+ 1: LD r31, r254, 0a, 64h
+    ADDI64 r254, r254, 64d
     JALA r0, r31, 0a
 opaque:
-    ADDI64 r254, r254, -8d
-    ST r32, r254, 0a, 8h
     LI64 r13, 2147483648d
     CP r1, r13
-    LD r32, r254, 0a, 8h
-    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 timed out
-code size: 268
+code size: 220
 ret: 2147483648
 status: Ok(())
diff --git a/lang/tests/son_tests_very_nested_loops.txt b/lang/tests/son_tests_very_nested_loops.txt
index 5aa16aa1..246a2557 100644
--- a/lang/tests/son_tests_very_nested_loops.txt
+++ b/lang/tests/son_tests_very_nested_loops.txt
@@ -1,6 +1,27 @@
 main:
-    CP r1, r0
-    JALA r0, r31, 0a
-code size: 22
-ret: 0
+    LI64 r16, 4621819117588971520d
+    LI64 r17, 1d
+    LI64 r18, 3d
+    CP r14, r0
+    CP r15, r14
+ 3: JNE r15, r18, :0
+    CP r1, r17
+    JMP :1
+ 0: ITF64 r19, r15
+    CP r13, r14
+ 5: JNE r13, r18, :2
+    ADD64 r15, r15, r17
+    JMP :3
+ 2: ITF64 r20, r13
+    FMUL64 r20, r20, r19
+    FCMPLT64 r20, r20, r16
+    NOT r20, r20
+    ANDI r20, r20, 255d
+    JNE r20, r0, :4
+    ADD64 r13, r13, r17
+    JMP :5
+ 4: CP r1, r14
+ 1: JALA r0, r31, 0a
+code size: 130
+ret: 1
 status: Ok(())
diff --git a/lang/tests/son_tests_wide_ret.txt b/lang/tests/son_tests_wide_ret.txt
index c7b70060..9c8cbec5 100644
--- a/lang/tests/son_tests_wide_ret.txt
+++ b/lang/tests/son_tests_wide_ret.txt
@@ -1,6 +1,6 @@
 main:
-    ADDI64 r254, r254, -56d
-    ST r31, r254, 16a, 40h
+    ADDI64 r254, r254, -48d
+    ST r31, r254, 16a, 32h
     ADDI64 r32, r254, 0d
     CP r3, r0
     CP r4, r0
@@ -11,12 +11,12 @@ main:
     SUB8 r32, r32, r34
     ANDI r32, r32, 255d
     CP r1, r32
-    LD r31, r254, 16a, 40h
-    ADDI64 r254, r254, 56d
+    LD r31, r254, 16a, 32h
+    ADDI64 r254, r254, 48d
     JALA r0, r31, 0a
 maina:
-    ADDI64 r254, r254, -68d
-    ST r31, r254, 20a, 48h
+    ADDI64 r254, r254, -60d
+    ST r31, r254, 20a, 40h
     ADDI64 r32, r254, 16d
     JAL r31, r0, :small_struct
     ST r1, r32, 0a, 4h
@@ -40,19 +40,17 @@ maina:
     ST r0, r254, 14a, 1h
     ST r0, r254, 15a, 1h
     LD r1, r33, 0a, 16h
-    LD r31, r254, 20a, 48h
-    ADDI64 r254, r254, 68d
+    LD r31, r254, 20a, 40h
+    ADDI64 r254, r254, 60d
     JALA r0, r31, 0a
 small_struct:
-    ADDI64 r254, r254, -12d
-    ST r32, r254, 4a, 8h
+    ADDI64 r254, r254, -4d
     ADDI64 r13, r254, 0d
     ST r0, r254, 0a, 2h
     ST r0, r254, 2a, 2h
     LD r1, r13, 0a, 4h
-    LD r32, r254, 4a, 8h
-    ADDI64 r254, r254, 12d
+    ADDI64 r254, r254, 4d
     JALA r0, r31, 0a
-code size: 585
+code size: 559
 ret: 2
 status: Ok(())
diff --git a/lang/tests/son_tests_writing_into_string.txt b/lang/tests/son_tests_writing_into_string.txt
index 706fabcb..7247085d 100644
--- a/lang/tests/son_tests_writing_into_string.txt
+++ b/lang/tests/son_tests_writing_into_string.txt
@@ -1,12 +1,12 @@
 inl:
     JALA r0, r31, 0a
 main:
-    ADDI64 r254, r254, -16d
-    ST r31, r254, 0a, 16h
+    ADDI64 r254, r254, -8d
+    ST r31, r254, 0a, 8h
     JAL r31, r0, :outl
     JAL r31, r0, :inl
-    LD r31, r254, 0a, 16h
-    ADDI64 r254, r254, 16d
+    LD r31, r254, 0a, 8h
+    ADDI64 r254, r254, 8d
     JALA r0, r31, 0a
 outl:
     JALA r0, r31, 0a
diff --git a/lang/tests/son_tests_wrong_dead_code_elimination.txt b/lang/tests/son_tests_wrong_dead_code_elimination.txt
index 8f39d8e1..df3874ae 100644
--- a/lang/tests/son_tests_wrong_dead_code_elimination.txt
+++ b/lang/tests/son_tests_wrong_dead_code_elimination.txt
@@ -1,6 +1,5 @@
 main:
-    ADDI64 r254, r254, -41d
-    ST r32, r254, 1a, 40h
+    ADDI64 r254, r254, -1d
     LI64 r14, 255d
     LI8 r13, 1b
     ST r0, r254, 0a, 1h
@@ -20,10 +19,9 @@ main:
  1: ADD8 r15, r15, r13
     ST r15, r254, 0a, 1h
     JMP :2
-    LD r32, r254, 1a, 40h
-    ADDI64 r254, r254, 41d
+    ADDI64 r254, r254, 1d
     JALA r0, r31, 0a
 timed out
-code size: 204
+code size: 178
 ret: 0
 status: Ok(())