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Implement IR instruction PackedSelect, reimplement SEL

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MerryMage
2017-11-25 16:33:48 +00:00
parent 18f11972c6
commit d1e0a29cd9
5 changed files with 25 additions and 14 deletions
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18
src/backend_x64/emit_x64.cpp
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@@ -2128,6 +2128,24 @@ void EmitX64::EmitPackedAbsDiffSumS8(RegAlloc& reg_alloc, IR::Block&, IR::Inst*
EmitPackedOperation(code, reg_alloc, inst, &Xbyak::CodeGenerator::psadbw);
}
void EmitX64::EmitPackedSelect(RegAlloc& reg_alloc, IR::Block&, IR::Inst* inst) {
auto args = reg_alloc.GetArgumentInfo(inst);
Xbyak::Reg32 ge = reg_alloc.UseScratchGpr(args[0]).cvt32();
Xbyak::Reg32 to = reg_alloc.UseScratchGpr(args[1]).cvt32();
Xbyak::Reg32 from = reg_alloc.UseScratchGpr(args[2]).cvt32();
Xbyak::Reg32 tmp = reg_alloc.ScratchGpr().cvt32();
code->mov(tmp, 0x01010101);
code->pdep(ge, ge, tmp);
code->imul(ge, ge, 0xFF);
code->and_(from, ge);
code->andn(to, ge, to);
code->or_(from, to);
reg_alloc.DefineValue(inst, from);
}
static void DenormalsAreZero32(BlockOfCode* code, Xbyak::Xmm xmm_value, Xbyak::Reg32 gpr_scratch) {
using namespace Xbyak::util;
Xbyak::Label end;