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Improve const to immediate propagation

This commit is contained in:
drmortalwombat 2025-05-10 10:50:42 +02:00
parent 850bbfc31a
commit 42299c9406
1 changed files with 10 additions and 0 deletions
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10
oscar64/NativeCodeGenerator.cpp
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@ -46032,6 +46032,16 @@ bool NativeCodeBasicBlock::PeepHoleOptimizerShuffle(int pass)
bool NativeCodeBasicBlock::PeepHoleOptimizerIterate1(int i, int pass) bool NativeCodeBasicBlock::PeepHoleOptimizerIterate1(int i, int pass)
{ {
if (mIns[i].mMode == ASMIM_ABSOLUTE && mIns[i].mLinkerObject && (mIns[i].mLinkerObject->mFlags & LOBJF_CONST) &&
mIns[i].mLinkerObject->mReferences.Size() == 0 &&
!mIns[i].ChangesAddress() && HasAsmInstructionMode(mIns[i].mType, ASMIM_IMMEDIATE))
{
mIns[i].mMode = ASMIM_IMMEDIATE;
mIns[i].mAddress = mIns[i].mLinkerObject->mData[mIns[i].mAddress];
mIns[i].mLinkerObject = nullptr;
return true;
}
if (mIns[i].mType == ASMIT_AND && mIns[i].mMode == ASMIM_IMMEDIATE && mIns[i].mAddress == 0) if (mIns[i].mType == ASMIT_AND && mIns[i].mMode == ASMIM_IMMEDIATE && mIns[i].mAddress == 0)
{ {
mIns[i].mType = ASMIT_LDA; mIns[i].mType = ASMIT_LDA;