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More cross block const pointer forwarding

This commit is contained in:
drmortalwombat 2024-07-28 17:52:07 +02:00
parent 1bc5a2ad7e
commit 0b8304b40d
1 changed files with 22 additions and 1 deletions
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23
oscar64/InterCode.cpp
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@ -12402,6 +12402,21 @@ InterInstruction* InterCodeBasicBlock::FindTempOrigin(int temp) const
return nullptr;
}
InterInstruction* InterCodeBasicBlock::FindTempOriginSinglePath(int temp) const
{
for (int i = mInstructions.Size() - 1; i >= 0; i--)
{
if (mInstructions[i]->mDst.mTemp == temp)
{
mMark = i;
return mInstructions[i];
}
}
if (mEntryBlocks.Size() == 1)
return mEntryBlocks[0]->FindTempOriginSinglePath(temp);
return nullptr;
}
bool InterCodeBasicBlock::CanMoveInstructionDown(int si, int ti) const
{
InterInstruction* ins = mInstructions[si];
@ -16178,7 +16193,7 @@ bool InterCodeBasicBlock::PullStoreUpToConstAddress(void)
if (ins->mCode == IC_STORE && ins->mSrc[0].mTemp < 0 && ins->mSrc[1].mTemp >= 0 && CanMoveInstructionBeforeBlock(i))
{
int j = 0;
while (j < mEntryBlocks.Size() && (cins = mEntryBlocks[j]->FindTempOrigin(ins->mSrc[1].mTemp)) && cins->mCode == IC_CONSTANT)
while (j < mEntryBlocks.Size() && (cins = mEntryBlocks[j]->FindTempOriginSinglePath(ins->mSrc[1].mTemp)) && cins->mCode == IC_CONSTANT)
j++;
if (j == mEntryBlocks.Size())
@ -22608,6 +22623,12 @@ void InterCodeProcedure::Close(void)
#endif
BuildDataFlowSets();
GrowingInstructionPtrArray ptemps(nullptr);
ptemps.SetSize(mTemporaries.Size());
ResetVisited();
mEntryBlock->ForwardConstTemps(ptemps);
ResetVisited();
mEntryBlock->PullStoreUpToConstAddress();
DisassembleDebug("PullStoreUpToConstAddress");