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OpcodeDispatcher: fuse sbb when flags calculated

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
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Alyssa Rosenzweig committed 2024-02-26 15:35:14 -04:00
1 parent a750870abf
commit 333271d490
1 file changed
+8 -4
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FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+8 -4
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@@ -428,17 +428,21 @@ void OpDispatchBuilder::SBBOp(OpcodeArgs) {
OrderedNode *DestMem = LoadSource(GPRClass, Op, Op->Dest, Op->Flags, {.LoadData = false});
DestMem = AppendSegmentOffset(DestMem, Op->Flags);
Before = _AtomicFetchSub(IR::SizeToOpSize(Size), ALUOp, DestMem);
Result = _Sub(Size == 8 ? OpSize::i64Bit : OpSize::i32Bit, Before, ALUOp);
}
else {
Before = LoadSource(GPRClass, Op, Op->Dest, Op->Flags);
Result = _Sub(Size == 8 ? OpSize::i64Bit : OpSize::i32Bit, Before, ALUOp);
StoreResult(GPRClass, Op, Result, -1);
}
if (SetFlags) {
CalculateFlags_SBB(Size, Before, Src);
Result = CalculateFlags_SBB(Size, Before, Src);
} else {
auto CF = GetRFLAG(FEXCore::X86State::RFLAG_CF_RAW_LOC);
auto ALUOp = _Add(OpSize, Src, CF);
Result = _Sub(Size == 8 ? OpSize::i64Bit : OpSize::i32Bit, Before, ALUOp);
}
if (!DestIsLockedMem(Op))
StoreResult(GPRClass, Op, Result, -1);
}
void OpDispatchBuilder::PUSHOp(OpcodeArgs) {