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OpcodeDispatcher: optimize blsr flags

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reorder to avoid nzcv clobber

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
This commit is contained in:
Alyssa Rosenzweig committed 2024-01-30 22:28:06 -04:00
1 parent 3a19133267
commit 93cef53ec0
1 file changed
+2 -6
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FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
+2 -6
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@@ -1050,18 +1050,14 @@ void OpDispatchBuilder::CalculateFlags_BLSMSK(uint8_t SrcSize, OrderedNode *Resu
void OpDispatchBuilder::CalculateFlags_BLSR(uint8_t SrcSize, OrderedNode *Result, OrderedNode *Src) {
auto Zero = _Constant(0);
auto One = _Constant(1);
auto CFOp = _Select(IR::COND_EQ, Src, Zero, One, Zero);
SetNZ_ZeroCV(SrcSize, Result);
SetRFLAG<X86State::RFLAG_CF_RAW_LOC>(CFOp);
// PF/AF undefined
_InvalidateFlags((1UL << X86State::RFLAG_PF_RAW_LOC) |
(1UL << X86State::RFLAG_AF_RAW_LOC));
// CF
{
auto CFOp = _Select(IR::COND_EQ, Src, Zero, One, Zero);
SetRFLAG<X86State::RFLAG_CF_RAW_LOC>(CFOp);
}
}
void OpDispatchBuilder::CalculateFlags_POPCOUNT(OrderedNode *Src) {