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Consume regs for BlkOpKindLoop #97014

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merged 3 commits into from
Jan 16, 2024
Merged

Consume regs for BlkOpKindLoop #97014

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ae878ad
Consume regs for BlkOpKindLoop
kunalspathak Jan 16, 2024
8e46706
Mark the node as contained
kunalspathak Jan 16, 2024
06c89ee
undo Program.cs commit
kunalspathak Jan 16, 2024
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5 changes: 5 additions & 0 deletions src/coreclr/jit/lowerarmarch.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -570,6 +570,11 @@ void Lowering::LowerBlockStore(GenTreeBlk* blkNode)
((blkNode->GetLayout()->GetSize() % TARGET_POINTER_SIZE) == 0) && src->IsIntegralConst(0))
{
blkNode->gtBlkOpKind = GenTreeBlk::BlkOpKindLoop;
#ifdef TARGET_ARM64
// On ARM64 we can just use REG_ZR instead of having to load
// the constant into a real register like on ARM32.
src->SetContained();
#endif
return;
}
#endif
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