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[machinst x64]: implement packed not

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This begins to use `Inst` helper functions as discussed in #2252.
This commit is contained in:
Andrew Brown
2020-10-07 13:52:35 -07:00
parent 3c55523d40
commit 95f0e96e62
2 changed files with 35 additions and 5 deletions
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13
cranelift/codegen/src/isa/x64/lower.rs
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@@ -892,15 +892,18 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
Opcode::Bnot => {
let ty = ty.unwrap();
let size = ty.bytes() as u8;
let src = put_input_in_reg(ctx, inputs[0]);
let dst = get_output_reg(ctx, outputs[0]);
ctx.emit(Inst::gen_move(dst, src, ty));
if ty.is_vector() {
unimplemented!("vector bnot");
let tmp = ctx.alloc_tmp(RegClass::V128, ty);
ctx.emit(Inst::equals(ty, RegMem::from(tmp), tmp));
ctx.emit(Inst::xor(ty, RegMem::from(tmp), dst));
} else if ty.is_bool() {
unimplemented!("bool bnot")
} else {
let size = ty.bytes() as u8;
let src = put_input_in_reg(ctx, inputs[0]);
let dst = get_output_reg(ctx, outputs[0]);
ctx.emit(Inst::gen_move(dst, src, ty));
ctx.emit(Inst::not(size, dst));
}
}