diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
-rw-r--r-- | llvm/lib/Transforms/Utils/Local.cpp | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp index 8c643c9..fd33677 100644 --- a/llvm/lib/Transforms/Utils/Local.cpp +++ b/llvm/lib/Transforms/Utils/Local.cpp @@ -649,13 +649,9 @@ void llvm::MergeBasicBlockIntoOnlyPred(BasicBlock *DestBB, DominatorTree *DT) { DestBB->moveAfter(PredBB); if (DT) { - // For some irreducible CFG we end up having forward-unreachable blocks - // so check if getNode returns a valid node before updating the domtree. - if (DomTreeNode *DTN = DT->getNode(PredBB)) { - BasicBlock *PredBBIDom = DTN->getIDom()->getBlock(); - DT->changeImmediateDominator(DestBB, PredBBIDom); - DT->eraseNode(PredBB); - } + BasicBlock *PredBBIDom = DT->getNode(PredBB)->getIDom()->getBlock(); + DT->changeImmediateDominator(DestBB, PredBBIDom); + DT->eraseNode(PredBB); } // Nuke BB. PredBB->eraseFromParent(); |