diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index ab281ef1edb..d0932f834cf 100644 --- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -2419,6 +2419,11 @@ static Value *ensureValueAvailableInSuccessor(Value *V, BasicBlock *BB, if (PHI) return PHI; + // If V is not an instruction defined in BB, just return it. + if (!AlternativeV && + (!isa<Instruction>(V) || cast<Instruction>(V)->getParent() != BB)) + return V; + PHI = PHINode::Create(V->getType(), 2, "simplifycfg.merge", &Succ->front()); PHI->addIncoming(V, BB); for (BasicBlock *PredBB : predecessors(Succ)) |
