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emit_x64_vector: Emit VPABSQ in EmitVectorAbs() for the 64-bit case if AVX-512VL is available

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Lioncash 2018-05-03 12:46:13 -04:00 committed by MerryMage
parent d4ee878cbd
commit 0f067b7330
1 changed files with 10 additions and 7 deletions
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7
src/backend_x64/emit_x64_vector.cpp
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@ -293,14 +293,17 @@ static void EmitVectorAbs(size_t esize, EmitContext& ctx, IR::Inst* inst, BlockO
code.psubd(data, temp); code.psubd(data, temp);
} }
break; break;
case 64: { case 64:
if (code.DoesCpuSupport(Xbyak::util::Cpu::tAVX512VL)) {
code.vpabsq(data, data);
} else {
const Xbyak::Xmm temp = ctx.reg_alloc.ScratchXmm(); const Xbyak::Xmm temp = ctx.reg_alloc.ScratchXmm();
code.pshufd(temp, data, 0b11110101); code.pshufd(temp, data, 0b11110101);
code.psrad(temp, 31); code.psrad(temp, 31);
code.pxor(data, temp); code.pxor(data, temp);
code.psubq(data, temp); code.psubq(data, temp);
break;
} }
break;
} }
ctx.reg_alloc.DefineValue(inst, data); ctx.reg_alloc.DefineValue(inst, data);