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Improve double indexed pointer from table

This commit is contained in:
drmortalwombat 2025-01-04 11:11:37 +01:00
parent 950c434157
commit d99499b6e3
1 changed files with 35 additions and 0 deletions
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35
oscar64/NativeCodeGenerator.cpp
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@ -49305,6 +49305,41 @@ bool NativeCodeBasicBlock::PeepHoleOptimizerIterateN(int i, int pass)
}
}
#endif
#if 1
if (
mIns[i + 0].mType == ASMIT_CLC &&
mIns[i + 1].mType == ASMIT_ADC && (mIns[i + 1].mMode == ASMIM_ABSOLUTE_X || mIns[i + 1].mMode == ASMIM_ABSOLUTE_Y || mIns[i + 1].mMode == ASMIM_ABSOLUTE) &&
mIns[i + 2].mType == ASMIT_STA && mIns[i + 2].mMode == ASMIM_ZERO_PAGE &&
mIns[i + 3].mType == ASMIT_LDA && (mIns[i + 3].mMode == ASMIM_ABSOLUTE_X || mIns[i + 3].mMode == ASMIM_ABSOLUTE_Y || mIns[i + 3].mMode == ASMIM_ABSOLUTE) &&
mIns[i + 4].mType == ASMIT_ADC && mIns[i + 4].mMode == ASMIM_IMMEDIATE && mIns[i + 4].mAddress == 0 &&
mIns[i + 5].mType == ASMIT_STA && mIns[i + 5].mMode == ASMIM_ZERO_PAGE && mIns[i + 5].mAddress == mIns[i + 2].mAddress + 1)
{
int yval = RetrieveYValue(i);
int reg = FindFreeAccu(i);
if (reg >= 0)
{
NativeCodeInstruction iins(mIns[i + 0].mIns, ASMIT_STA, ASMIM_ZERO_PAGE, reg);
mProc->ResetPatched();
if (CheckForwardSumYPointer(this, mIns[i + 2].mAddress, mIns[i + 2].mAddress, iins, i + 6, yval, 3))
{
mIns[i + 0] = iins;
mIns[i + 1].mType = ASMIT_LDA;
mIns[i + 4].mType = ASMIT_NOP; mIns[i + 4].mMode = ASMIM_IMPLIED;
mProc->ResetPatched();
if (PatchForwardSumYPointer(this, mIns[i + 2].mAddress, mIns[i + 2].mAddress, iins, i + 6, yval))
{
if (mTrueJump)
mTrueJump->CheckLive();
if (mFalseJump)
mFalseJump->CheckLive();
return true;
}
}
}
}
#endif
#if 1
if (
mLoopHead &&