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[machinst x64]: add packed min/max implementations

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This commit is contained in:
Andrew Brown
2020-09-21 12:32:32 -07:00
parent 7546d98844
commit ac2bf9d246
4 changed files with 166 additions and 3 deletions
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42
cranelift/codegen/src/isa/x64/lower.rs
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@@ -709,6 +709,48 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
}
}
Opcode::Imax | Opcode::Umax | Opcode::Imin | Opcode::Umin => {
let lhs = put_input_in_reg(ctx, inputs[0]);
let rhs = input_to_reg_mem(ctx, inputs[1]);
let dst = get_output_reg(ctx, outputs[0]);
let ty = ty.unwrap();
if ty.is_vector() {
let sse_op = match op {
Opcode::Imax => match ty {
types::I8X16 => SseOpcode::Pmaxsb,
types::I16X8 => SseOpcode::Pmaxsw,
types::I32X4 => SseOpcode::Pmaxsd,
_ => panic!("Unsupported type for packed {} instruction: {}", op, ty),
},
Opcode::Umax => match ty {
types::I8X16 => SseOpcode::Pmaxub,
types::I16X8 => SseOpcode::Pmaxuw,
types::I32X4 => SseOpcode::Pmaxud,
_ => panic!("Unsupported type for packed {} instruction: {}", op, ty),
},
Opcode::Imin => match ty {
types::I8X16 => SseOpcode::Pminsb,
types::I16X8 => SseOpcode::Pminsw,
types::I32X4 => SseOpcode::Pminsd,
_ => panic!("Unsupported type for packed {} instruction: {}", op, ty),
},
Opcode::Umin => match ty {
types::I8X16 => SseOpcode::Pminub,
types::I16X8 => SseOpcode::Pminuw,
types::I32X4 => SseOpcode::Pminud,
_ => panic!("Unsupported type for packed {} instruction: {}", op, ty),
},
_ => unreachable!("This is a bug: the external and internal `match op` should be over the same opcodes."),
};
// Move the `lhs` to the same register as `dst`.
ctx.emit(Inst::gen_move(dst, lhs, ty));
ctx.emit(Inst::xmm_rm_r(sse_op, rhs, dst));
} else {
panic!("Unsupported type for {} instruction: {}", op, ty);
}
}
Opcode::Bnot => {
let ty = ty.unwrap();
if ty.is_vector() {