mirrors/dynarmic
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

emit_x64: Use xorps/xorpd when argument to TransferToFP32/TransferToFP64 is an immediate zero

Browse source
This commit is contained in:
MerryMage 2016-12-03 11:36:03 +00:00
parent e166965f3e
commit cede5e442a
1 changed files with 18 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/backend_x64/emit_x64.cpp
View file

@ -1677,18 +1677,28 @@ void EmitX64::EmitTransferFromFP64(IR::Block& block, IR::Inst* inst) {
}
void EmitX64::EmitTransferToFP32(IR::Block& block, IR::Inst* inst) {
if (inst->GetArg(0).IsImmediate() && inst->GetArg(0).GetU32() == 0) {
Xbyak::Xmm result = reg_alloc.DefXmm(inst);
code->xorps(result, result);
} else {
Xbyak::Xmm result = reg_alloc.DefXmm(inst);
Xbyak::Reg32 source = reg_alloc.UseGpr(inst->GetArg(0)).cvt32();
// TODO: Eliminate this.
code->movd(result, source);
}
}
void EmitX64::EmitTransferToFP64(IR::Block& block, IR::Inst* inst) {
if (inst->GetArg(0).IsImmediate() && inst->GetArg(0).GetU64() == 0) {
Xbyak::Xmm result = reg_alloc.DefXmm(inst);
code->xorpd(result, result);
} else {
Xbyak::Xmm result = reg_alloc.DefXmm(inst);
Xbyak::Reg64 source = reg_alloc.UseGpr(inst->GetArg(0));
// TODO: Eliminate this.
code->movq(result, source);
}
}
void EmitX64::EmitFPAbs32(IR::Block&, IR::Inst* inst) {
IR::Value a = inst->GetArg(0);