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Fix crash compiling infinite loop

This commit is contained in:
drmortalwombat 2024-01-30 15:04:13 +01:00
parent 623b511ce6
commit ecaab1b5b3
1 changed files with 30 additions and 27 deletions
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57
oscar64/NativeCodeGenerator.cpp
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@ -34193,37 +34193,40 @@ bool NativeCodeBasicBlock::OptimizeXYSpilling(void)
if (nblock == this)
nblock = mFalseJump;
int ps = pblock->mIns.Size();
if (nblock->mEntryBlocks.Size() == 1 && !pblock->mFalseJump && ps > 0)
if (nblock)
{
if (!ReferencesAccu())
int ps = pblock->mIns.Size();
if (nblock->mEntryBlocks.Size() == 1 && !pblock->mFalseJump && ps > 0)
{
if (!ReferencesXReg() && pblock->mIns.Size() > 0 && pblock->mIns[ps - 1].mType == ASMIT_TAX)
if (!ReferencesAccu())
{
nblock->mIns.Insert(0, NativeCodeInstruction(pblock->mIns[ps - 1].mIns, ASMIT_TAX));
pblock->mIns.Remove(ps - 1);
ps--;
pblock->mExitRequiredRegs += CPU_REG_A;
nblock->mEntryRequiredRegs += CPU_REG_A;
mEntryRequiredRegs += CPU_REG_A;
mExitRequiredRegs += CPU_REG_A;
for (int i = 0; i < mIns.Size(); i++)
mIns[i].mLive |= LIVE_CPU_REG_A;
changed = true;
}
if (!ReferencesXReg() && pblock->mIns.Size() > 0 && pblock->mIns[ps - 1].mType == ASMIT_TAX)
{
nblock->mIns.Insert(0, NativeCodeInstruction(pblock->mIns[ps - 1].mIns, ASMIT_TAX));
pblock->mIns.Remove(ps - 1);
ps--;
pblock->mExitRequiredRegs += CPU_REG_A;
nblock->mEntryRequiredRegs += CPU_REG_A;
mEntryRequiredRegs += CPU_REG_A;
mExitRequiredRegs += CPU_REG_A;
for (int i = 0; i < mIns.Size(); i++)
mIns[i].mLive |= LIVE_CPU_REG_A;
changed = true;
}
if (!ReferencesYReg() && pblock->mIns.Size() > 0 && pblock->mIns[ps - 1].mType == ASMIT_TAY)
{
nblock->mIns.Insert(0, NativeCodeInstruction(pblock->mIns[ps - 1].mIns, ASMIT_TAY));
pblock->mIns.Remove(ps - 1);
ps--;
pblock->mExitRequiredRegs += CPU_REG_A;
nblock->mEntryRequiredRegs += CPU_REG_A;
mEntryRequiredRegs += CPU_REG_A;
mExitRequiredRegs += CPU_REG_A;
for (int i = 0; i < mIns.Size(); i++)
mIns[i].mLive |= LIVE_CPU_REG_A;
changed = true;
if (!ReferencesYReg() && pblock->mIns.Size() > 0 && pblock->mIns[ps - 1].mType == ASMIT_TAY)
{
nblock->mIns.Insert(0, NativeCodeInstruction(pblock->mIns[ps - 1].mIns, ASMIT_TAY));
pblock->mIns.Remove(ps - 1);
ps--;
pblock->mExitRequiredRegs += CPU_REG_A;
nblock->mEntryRequiredRegs += CPU_REG_A;
mEntryRequiredRegs += CPU_REG_A;
mExitRequiredRegs += CPU_REG_A;
for (int i = 0; i < mIns.Size(); i++)
mIns[i].mLive |= LIVE_CPU_REG_A;
changed = true;
}
}
}
}