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movzx function return values, to clear upper bits in zig function results

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Folkert 2023-06-01 17:01:43 +02:00
parent 515d60a138
commit f5578e71b6
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3 changed files with 96 additions and 2 deletions
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10
crates/compiler/gen_dev/src/generic64/mod.rs
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@ -306,6 +306,14 @@ pub trait Assembler<GeneralReg: RegTrait, FloatReg: RegTrait>: Sized + Copy {
src: GeneralReg,
);
// move with zero extension
fn movzx_reg_reg(
buf: &mut Vec<'_, u8>,
input_width: RegisterWidth,
dst: GeneralReg,
src: GeneralReg,
);
// base32 is similar to stack based instructions but they reference the base/frame pointer.
fn mov_freg64_base32(buf: &mut Vec<'_, u8>, dst: FloatReg, offset: i32);
@ -914,7 +922,7 @@ impl<
let width = RegisterWidth::try_from_layout(ret_repr).unwrap();
let dst_reg = self.storage_manager.claim_general_reg(&mut self.buf, dst);
ASM::mov_reg_reg(&mut self.buf, width, dst_reg, CC::GENERAL_RETURN_REGS[0]);
ASM::movzx_reg_reg(&mut self.buf, width, dst_reg, CC::GENERAL_RETURN_REGS[0]);
}
single_register_floats!() => {
let dst_reg = self.storage_manager.claim_float_reg(&mut self.buf, dst);