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Make SILPasses (ARC & Pin removal) aware of IsUniqueInst.

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Swift SVN r27888
This commit is contained in:
Andrew Trick
2015-04-28 22:54:25 +00:00
parent a174aa4dfe
commit 61d2c0166b
3 changed files with 11 additions and 0 deletions
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4
lib/SILAnalysis/ARCAnalysis.cpp
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@@ -117,6 +117,8 @@ static bool canDecrementRefCountsByValueKind(SILInstruction *User) {
case ValueKind::CopyBlockInst:
case ValueKind::CondFailInst:
case ValueKind::StrongPinInst:
case ValueKind::IsUniqueInst:
case ValueKind::IsUniqueOrPinnedInst:
return false;
case ValueKind::CopyAddrInst:
@@ -165,6 +167,8 @@ bool swift::mayDecrementRefCount(SILInstruction *User,
}
bool swift::mayCheckRefCount(SILInstruction *User) {
if (isa<IsUniqueInst>(User) || isa<IsUniqueOrPinnedInst>(User))
return true;
if (auto *AI = dyn_cast<ApplyInst>(User))
if (auto *FRI = dyn_cast<FunctionRefInst>(AI->getCallee()))
return FRI->getReferencedFunction()->getName().startswith(