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PPCRec: Fix eflags optimization

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Exzap 2026-03-20 22:48:48 +01:00
parent 0121e63408
commit 8065520583
1 changed files with 2 additions and 1 deletions
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src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp
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@ -678,7 +678,8 @@ void IMLOptimizerX86_SubstituteCJumpForEflagsJump(IMLOptimizerRegIOAnalysis& reg
// we can turn the jump into an eflags jump
cjumpInstr.make_x86_eflags_jcc(cond, invertedCondition);
if (IMLUtil_CountRegisterReadsInRange(seg, cmpInstrIndex, cjmpInstIndex, regCondBool.GetRegID()) > 1 || regIoAnalysis.IsRegisterNeededAtEndOfSegment(seg, regCondBool.GetRegID()))
// note: x86_eflags_jcc doesn't count towards cond reg reads, so we have to check > 0 here instead of > 1
if (IMLUtil_CountRegisterReadsInRange(seg, cmpInstrIndex, cjmpInstIndex, regCondBool.GetRegID()) > 0 || regIoAnalysis.IsRegisterNeededAtEndOfSegment(seg, regCondBool.GetRegID()))
return; // bool register is used beyond the CMP, we can't drop it
auto& cmpInstr = seg.imlList[cmpInstrIndex];