[ObjCARC] Handle ARCInstKind::ClaimRV in OptimizeIndividualCalls.

When support for objc_unsafeClaimAutoreleasedReturnValue has been added to the
ARC optimizer in r258970, one case was missed which would lead the optimizer
to execute an llvm_unreachable. In this case, just handle ClaimRV in the same
way we handle RetainRV.

llvm-svn: 261134

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp b/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
index f0ee6e2be48..39e99a00b0c 100644
--- a/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
+++ b/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
@@ -889,6 +889,7 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) {
                            Inst->getParent(), Inst,
                            DependingInstructions, Visited, PA);
           break;
+        case ARCInstKind::ClaimRV:
         case ARCInstKind::RetainRV:
         case ARCInstKind::AutoreleaseRV:
           // Don't move these; the RV optimization depends on the autoreleaseRV