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OpcodeDispatcher: optimize fcmovu

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
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Alyssa Rosenzweig committed 2024-08-21 17:52:22 -04:00
1 parent db45f6eec8
commit b893bdb8df
1 file changed
+8 -3
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FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+8 -3
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@@ -589,9 +589,14 @@ void OpDispatchBuilder::CALLAbsoluteOp(OpcodeArgs) {
Ref OpDispatchBuilder::SelectBit(Ref Cmp, IR::OpSize ResultSize, Ref TrueValue, Ref FalseValue) {
uint64_t TrueConst, FalseConst;
if (IsValueConstant(WrapNode(TrueValue), &TrueConst) && IsValueConstant(WrapNode(FalseValue), &FalseConst) && TrueConst == 1 && FalseConst == 0) {
return _And(ResultSize, Cmp, _Constant(1));
if (IsValueConstant(WrapNode(TrueValue), &TrueConst) && IsValueConstant(WrapNode(FalseValue), &FalseConst) && FalseConst == 0) {
if (TrueConst == 1) {
return _And(ResultSize, Cmp, _Constant(1));
} else if (TrueConst == 0xffffffff) {
return _Sbfe(OpSize::i32Bit, 1, 0, Cmp);
} else if (TrueConst == 0xffffffffffffffffull) {
return _Sbfe(OpSize::i64Bit, 1, 0, Cmp);
}
}
SaveNZCV();