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Fixed optimizer bug where certain syscalls were not included in register liveness analysis

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This commit is contained in:
Devin Bidwell
2026-01-01 12:35:57 -07:00
parent fb5eacea02
commit 14c641797a
3 changed files with 55 additions and 0 deletions
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5
rust_compiler/libs/optimizer/src/helpers.rs
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@@ -125,6 +125,9 @@ pub fn reg_is_read(instr: &Instruction, reg: u8) -> bool {
| Instruction::Pow(_, a, b) => check(a) || check(b),
Instruction::Load(_, a, _) => check(a),
Instruction::Store(a, _, b) => check(a) || check(b),
Instruction::StoreBatch(a, _, b) => check(a) || check(b),
Instruction::StoreBatchNamed(a, b, _, c) => check(a) || check(b) || check(c),
Instruction::StoreSlot(a, b, _, c) => check(a) || check(b) || check(c),
Instruction::BranchEq(a, b, _)
| Instruction::BranchNe(a, b, _)
| Instruction::BranchGt(a, b, _)
@@ -167,6 +170,8 @@ pub fn reg_is_read(instr: &Instruction, reg: u8) -> bool {
Instruction::Atan2(_, a, b) | Instruction::Max(_, a, b) | Instruction::Min(_, a, b) => {
check(a) || check(b)
}
Instruction::JumpRelative(a) => check(a),
Instruction::Alias(_, a) => check(a),
_ => false,
}
}