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emit_x64_vector: Use VPOPCNTB in EmitVectorPopulationCount() if AVX-512 BITALG is available

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Lioncash 2018-05-04 12:25:57 -04:00 committed by MerryMage
parent 0c63e8f396
commit 27a6d5f6ce
1 changed files with 10 additions and 0 deletions
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10
src/backend_x64/emit_x64_vector.cpp
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@ -1613,6 +1613,16 @@ void EmitX64::EmitVectorPairedAdd64(EmitContext& ctx, IR::Inst* inst) {
} }
void EmitX64::EmitVectorPopulationCount(EmitContext& ctx, IR::Inst* inst) { void EmitX64::EmitVectorPopulationCount(EmitContext& ctx, IR::Inst* inst) {
if (code.DoesCpuSupport(Xbyak::util::Cpu::tAVX512_BITALG)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm data = ctx.reg_alloc.UseScratchXmm(args[0]);
code.vpopcntb(data, data);
ctx.reg_alloc.DefineValue(inst, data);
return;
}
if (code.DoesCpuSupport(Xbyak::util::Cpu::tSSSE3)) { if (code.DoesCpuSupport(Xbyak::util::Cpu::tSSSE3)) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst); auto args = ctx.reg_alloc.GetArgumentInfo(inst);