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Fix movement of LDY/STY pair that conflicts with Z flag usage

This commit is contained in:
drmortalwombat 2022-10-13 22:43:50 +02:00
parent 4a49456a57
commit 634b7914ea
1 changed files with 7 additions and 6 deletions
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11
oscar64/NativeCodeGenerator.cpp
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@ -24449,7 +24449,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(NativeCodeProcedure* proc, int pass
{
int j = i;
while (j + 2 < mIns.Size() &&
!mIns[j + 2].ReferencesYReg() && !(mIns[j + 2].SameEffectiveAddress(mIns[j + 0]) && mIns[j + 2].ChangesAddress()) && !mIns[j + 2].MayBeChangedOnAddress(mIns[j + 1]))
!mIns[j + 2].ReferencesYReg() && !(mIns[j + 2].SameEffectiveAddress(mIns[j + 0]) && mIns[j + 2].ChangesAddress()) && !mIns[j + 2].MayBeChangedOnAddress(mIns[j + 1]) && !(mIns[j + 2].mLive & LIVE_CPU_REG_Z))
{
mIns[j + 0].mLive |= mIns[j + 2].mLive;
mIns[j + 1].mLive |= mIns[j + 2].mLive;
@ -24465,7 +24465,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizer(NativeCodeProcedure* proc, int pass
{
int j = i;
while (j + 2 < mIns.Size() &&
!mIns[j + 2].ReferencesXReg() && !(mIns[j + 2].SameEffectiveAddress(mIns[j + 0]) && mIns[j + 2].ChangesAddress()) && !mIns[j + 2].MayBeChangedOnAddress(mIns[j + 1]))
!mIns[j + 2].ReferencesXReg() && !(mIns[j + 2].SameEffectiveAddress(mIns[j + 0]) && mIns[j + 2].ChangesAddress()) && !mIns[j + 2].MayBeChangedOnAddress(mIns[j + 1]) && !(mIns[j + 2].mLive & LIVE_CPU_REG_Z))
{
mIns[j + 0].mLive |= mIns[j + 2].mLive;
mIns[j + 1].mLive |= mIns[j + 2].mLive;
@ -30280,7 +30280,8 @@ void NativeCodeProcedure::RebuildEntry(void)
void NativeCodeProcedure::Optimize(void)
{
CheckFunc = !strcmp(mInterProc->mIdent->mString, "title_line_expand");
CheckFunc = !strcmp(mInterProc->mIdent->mString, "zombie_move");
#if 1
int step = 0;
int cnt = 0;
@ -30393,6 +30394,7 @@ void NativeCodeProcedure::Optimize(void)
mEntryBlock->CheckBlocks();
#endif
#if 1
ResetVisited();
if (mEntryBlock->PeepHoleOptimizer(this, step))
@ -30400,7 +30402,6 @@ void NativeCodeProcedure::Optimize(void)
#endif
// if (cnt == 2)
// return;
#if 1
@ -30763,7 +30764,7 @@ void NativeCodeProcedure::Optimize(void)
else
cnt++;
// if (CheckFunc && step == 3 && cnt == 4)
// if (CheckFunc && cnt == 3)
// return;
} while (changed);