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Retain Z flag when restoring Y after index reduction

This commit is contained in:
drmortalwombat 2024-06-19 17:45:20 +02:00
parent 1fa9828f6a
commit cf9a006005
1 changed files with 9 additions and 2 deletions
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11
oscar64/NativeCodeGenerator.cpp
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@ -27813,7 +27813,14 @@ bool NativeCodeBasicBlock::PatchGlobalAddressSumYPointer(const NativeCodeBasicBl
ins.mAddress = address + yval; ins.mAddress = address + yval;
ins.mFlags = (ins.mFlags & ~(NCIF_LOWER | NCIF_UPPER)) | flags; ins.mFlags = (ins.mFlags & ~(NCIF_LOWER | NCIF_UPPER)) | flags;
if (ins.mLive & LIVE_CPU_REG_Y) if (ins.mLive & LIVE_CPU_REG_Y)
{
mIns.Insert(at + 1, NativeCodeInstruction(iins, ASMIT_LDY, ASMIM_IMMEDIATE, yval)); mIns.Insert(at + 1, NativeCodeInstruction(iins, ASMIT_LDY, ASMIM_IMMEDIATE, yval));
if (ins.mLive & LIVE_CPU_REG_Z)
{
mIns.Insert(at + 2, NativeCodeInstruction(iins, ASMIT_ORA, ASMIM_IMMEDIATE, 0));
ins.mLive |= LIVE_CPU_REG_A;
}
}
mIns.Insert(at, NativeCodeInstruction(iins, ASMIT_LDY, ASMIM_ZERO_PAGE, index)); mIns.Insert(at, NativeCodeInstruction(iins, ASMIT_LDY, ASMIM_ZERO_PAGE, index));
at++; at++;
@ -34914,6 +34921,7 @@ bool NativeCodeBasicBlock::OptimizeSimpleLoopInvariant(NativeCodeProcedure* proc
prevBlock->mIns.Push(mIns[si]); prevBlock->mIns.Push(mIns[si]);
mIns.Remove(si); mIns.Remove(si);
prevBlock->mExitRequiredRegs += CPU_REG_X;
mEntryRequiredRegs += CPU_REG_X; mEntryRequiredRegs += CPU_REG_X;
mExitRequiredRegs += CPU_REG_X; mExitRequiredRegs += CPU_REG_X;
@ -48519,7 +48527,7 @@ void NativeCodeProcedure::Compile(InterCodeProcedure* proc)
mInterProc = proc; mInterProc = proc;
mInterProc->mLinkerObject->mNativeProc = this; mInterProc->mLinkerObject->mNativeProc = this;
CheckFunc = !strcmp(mInterProc->mIdent->mString, "main"); CheckFunc = !strcmp(mInterProc->mIdent->mString, "enemies_move");
int nblocks = proc->mBlocks.Size(); int nblocks = proc->mBlocks.Size();
tblocks = new NativeCodeBasicBlock * [nblocks]; tblocks = new NativeCodeBasicBlock * [nblocks];
@ -50268,7 +50276,6 @@ void NativeCodeProcedure::Optimize(void)
data.Reset(); data.Reset();
mEntryBlock->BuildEntryDataSet(data); mEntryBlock->BuildEntryDataSet(data);
CheckCase = true;
ResetVisited(); ResetVisited();
if (mEntryBlock->ApplyEntryDataSet()) if (mEntryBlock->ApplyEntryDataSet())
changed = true; changed = true;