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emit_x64_floating_point: Remove unnecessary DenormalsAreZero from EmitFPSingleToDouble and EmitFPDoubleToSingle

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This commit is contained in:
MerryMage 2018-08-02 21:12:24 +01:00
parent 700088408d
commit c1babf41b2
1 changed files with 2 additions and 10 deletions
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12
src/backend_x64/emit_x64_floating_point.cpp
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@ -1028,12 +1028,8 @@ void EmitX64::EmitFPCompare64(EmitContext& ctx, IR::Inst* inst) {
void EmitX64::EmitFPSingleToDouble(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
Xbyak::Reg64 gpr_scratch = ctx.reg_alloc.ScratchGpr();
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
if (ctx.FPSCR_FTZ()) {
DenormalsAreZero<32>(code, result, gpr_scratch);
}
code.cvtss2sd(result, result);
if (ctx.FPSCR_DN()) {
ForceToDefaultNaN<64>(code, result);
@ -1044,12 +1040,8 @@ void EmitX64::EmitFPSingleToDouble(EmitContext& ctx, IR::Inst* inst) {
void EmitX64::EmitFPDoubleToSingle(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
Xbyak::Reg64 gpr_scratch = ctx.reg_alloc.ScratchGpr();
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
if (ctx.FPSCR_FTZ()) {
DenormalsAreZero<64>(code, result, gpr_scratch);
}
code.cvtsd2ss(result, result);
if (ctx.FPSCR_DN()) {
ForceToDefaultNaN<32>(code, result);