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Add support in SILLoop::canDuplicate for PartialApplyInst. #28261

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Merged
merged 1 commit into from
Nov 14, 2019
Merged

Add support in SILLoop::canDuplicate for PartialApplyInst. #28261

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17 changes: 10 additions & 7 deletions lib/SIL/LoopInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -48,13 +48,16 @@ bool SILLoop::canDuplicate(SILInstruction *I) const {
return true;
}
if (I->isDeallocatingStack()) {
SILInstruction *Alloc = nullptr;
if (auto *Dealloc = dyn_cast<DeallocStackInst>(I))
Alloc = dyn_cast<AllocStackInst>(Dealloc->getOperand());
if (auto *Dealloc = dyn_cast<DeallocRefInst>(I))
Alloc = dyn_cast<AllocRefInst>(Dealloc->getOperand());
// The matching alloc_stack must be in the loop.
return Alloc && contains(Alloc);
SILInstruction *alloc = nullptr;
if (auto *dealloc = dyn_cast<DeallocStackInst>(I)) {
SILValue address = dealloc->getOperand();
if (isa<AllocStackInst>(address) || isa<PartialApplyInst>(address))
alloc = cast<SingleValueInstruction>(address);
}
if (auto *dealloc = dyn_cast<DeallocRefInst>(I))
alloc = dyn_cast<AllocRefInst>(dealloc->getOperand());

return alloc && contains(alloc);
}

// CodeGen can't build ssa for objc methods.
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