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Add workaround for singlepass miscompilation on GetLocal.

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This commit is contained in:
losfair
2019-07-01 21:20:35 +08:00
parent 5f42045298
commit c67405ffe5
1 changed files with 10 additions and 2 deletions
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12
lib/singlepass-backend/src/codegen_x64.rs
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@ -1692,8 +1692,16 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
}
Operator::GetLocal { local_index } => {
let local_index = local_index as usize;
self.value_stack
.push((self.locals[local_index], LocalOrTemp::Local));
let ret = self.machine.acquire_locations(a, &[WpType::I64], false)[0];
Self::emit_relaxed_binop(
a,
&mut self.machine,
Assembler::emit_mov,
Size::S64,
self.locals[local_index],
ret,
);
self.value_stack.push((ret, LocalOrTemp::Temp));
}
Operator::SetLocal { local_index } => {
let local_index = local_index as usize;