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Optimize bit check to bool conversion

This commit is contained in:
drmortalwombat 2022-07-03 22:41:41 +02:00
parent eb55b2f55d
commit 931f9e71b9
1 changed files with 33 additions and 0 deletions
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33
oscar64/NativeCodeGenerator.cpp
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@ -11931,6 +11931,39 @@ bool NativeCodeBasicBlock::ExpandADCToBranch(NativeCodeProcedure* proc)
break;
}
#endif
#if 1
if (i + 3 < mIns.Size() &&
mIns[i + 0].ChangesAccuAndFlag() &&
mIns[i + 1].mType == ASMIT_CMP && mIns[i + 1].mMode == ASMIM_IMMEDIATE && mIns[i + 1].mAddress == 0x01 &&
mIns[i + 2].mType == ASMIT_LDA && mIns[i + 2].mMode == ASMIM_IMMEDIATE && mIns[i + 2].mAddress == 0x00 &&
mIns[i + 3].mType == ASMIT_ROL && mIns[i + 3].mMode == ASMIM_IMPLIED)
{
changed = true;
NativeCodeBasicBlock* eblock = proc->AllocateBlock();
NativeCodeBasicBlock* neblock = proc->AllocateBlock();
NativeCodeBasicBlock* rblock = proc->AllocateBlock();
rblock->mTrueJump = mTrueJump;
rblock->mFalseJump = mFalseJump;
rblock->mBranch = mBranch;
for (int j = i + 4; j < mIns.Size(); j++)
rblock->mIns.Push(mIns[j]);
mIns.SetSize(i + 1);
mIns[i + 0].mLive |= LIVE_CPU_REG_Z;
mTrueJump = neblock;
mFalseJump = eblock;
mBranch = ASMIT_BNE;
neblock->mIns.Push(NativeCodeInstruction(ASMIT_LDA, ASMIM_IMMEDIATE, 1));
eblock->Close(rblock, nullptr, ASMIT_JMP);
neblock->Close(rblock, nullptr, ASMIT_JMP);
break;
}
#endif
#if 1
if (i + 4 < mIns.Size() &&
(mIns[i + 0].mType == ASMIT_CPX || mIns[i + 0].mType == ASMIT_CPY) && mIns[i + 0].mMode == ASMIM_IMMEDIATE && mIns[i + 0].mAddress == 0x01 &&