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emit_x64_vector: Emit VPMAXSQ and VPMAXUQ for 64-bit vector max operations if AVX-512VL is available

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Lioncash 2018-05-03 18:38:07 -04:00 committed by MerryMage
parent 033e400df0
commit b97b71b8aa
1 changed files with 22 additions and 0 deletions
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22
src/backend_x64/emit_x64_vector.cpp
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@ -35,6 +35,18 @@ static void EmitVectorOperation(BlockOfCode& code, EmitContext& ctx, IR::Inst* i
ctx.reg_alloc.DefineValue(inst, xmm_a);
}
template <typename Function>
static void EmitAVXVectorOperation(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Function fn) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm xmm_a = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm xmm_b = ctx.reg_alloc.UseXmm(args[1]);
(code.*fn)(xmm_a, xmm_a, xmm_b);
ctx.reg_alloc.DefineValue(inst, xmm_a);
}
template <typename Lambda>
static void EmitOneArgumentFallback(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Lambda lambda) {
const auto fn = static_cast<mp::equivalent_function_type_t<Lambda>*>(lambda);
@ -1049,6 +1061,11 @@ void EmitX64::EmitVectorMaxS32(EmitContext& ctx, IR::Inst* inst) {
}
void EmitX64::EmitVectorMaxS64(EmitContext& ctx, IR::Inst* inst) {
if (code.DoesCpuSupport(Xbyak::util::Cpu::tAVX512VL)) {
EmitAVXVectorOperation(code, ctx, inst, &Xbyak::CodeGenerator::vpmaxsq);
return;
}
EmitTwoArgumentFallback(code, ctx, inst, [](std::array<s64, 2>& result, const std::array<s64, 2>& a, const std::array<s64, 2>& b){
std::transform(a.begin(), a.end(), b.begin(), result.begin(), [](auto x, auto y) { return std::max(x, y); });
});
@ -1086,6 +1103,11 @@ void EmitX64::EmitVectorMaxU32(EmitContext& ctx, IR::Inst* inst) {
}
void EmitX64::EmitVectorMaxU64(EmitContext& ctx, IR::Inst* inst) {
if (code.DoesCpuSupport(Xbyak::util::Cpu::tAVX512VL)) {
EmitAVXVectorOperation(code, ctx, inst, &Xbyak::CodeGenerator::vpmaxuq);
return;
}
EmitTwoArgumentFallback(code, ctx, inst, [](std::array<u64, 2>& result, const std::array<u64, 2>& a, const std::array<u64, 2>& b){
std::transform(a.begin(), a.end(), b.begin(), result.begin(), [](auto x, auto y) { return std::max(x, y); });
});