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Fix wrong loop invariant when result temp used before

This commit is contained in:
drmortalwombat 2024-09-21 13:50:14 +02:00
parent 2c9fd0e1a6
commit a04b09c737
1 changed files with 8 additions and 3 deletions
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5
oscar64/InterCode.cpp
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@ -18173,11 +18173,16 @@ void InterCodeBasicBlock::SingleBlockLoopOptimisation(const NumberSet& aliasedPa
InterInstruction* ins = mInstructions[i]; InterInstruction* ins = mInstructions[i];
if (ins->mInvariant) if (ins->mInvariant)
{
if (ins->mDst.mTemp >= 0 && IsTempReferencedInRange(0, i, ins->mDst.mTemp))
ins->mInvariant = false;
else
{ {
for (int j = 0; j < ins->mNumOperands; j++) for (int j = 0; j < ins->mNumOperands; j++)
if (ins->mSrc[j].mTemp >= 0 && dep[ins->mSrc[j].mTemp] == DEP_VARIABLE) if (ins->mSrc[j].mTemp >= 0 && dep[ins->mSrc[j].mTemp] == DEP_VARIABLE)
ins->mInvariant = false; ins->mInvariant = false;
} }
}
if (ins->mInvariant) if (ins->mInvariant)
{ {