diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/LoopInfo.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/LoopInfo.cpp b/llvm/lib/Analysis/LoopInfo.cpp index 2277a156142..c1f97889e61 100644 --- a/llvm/lib/Analysis/LoopInfo.cpp +++ b/llvm/lib/Analysis/LoopInfo.cpp @@ -151,11 +151,14 @@ Loop *LoopInfo::ConsiderForLoop(BasicBlock *BB, const DominatorSet &DS) { Loop *L = new Loop(BB); BBMap[BB] = L; + BasicBlock *EntryBlock = &BB->getParent()->getEntryBlock(); + while (!TodoStack.empty()) { // Process all the nodes in the loop BasicBlock *X = TodoStack.back(); TodoStack.pop_back(); - if (!L->contains(X)) { // As of yet unprocessed?? + if (!L->contains(X) && // As of yet unprocessed?? + DS.dominates(EntryBlock, X)) { // X is reachable from entry block? // Check to see if this block already belongs to a loop. If this occurs // then we have a case where a loop that is supposed to be a child of the // current loop was processed before the current loop. When this occurs, |
