diff options
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index 385de02..6e0296d 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -1484,7 +1484,6 @@ bool GVN::performPRE(Function& F) { if (isCriticalEdge(PREPred->getTerminator(), succNum)) { toSplit.push_back(std::make_pair(PREPred->getTerminator(), succNum)); - Changed = true; continue; } @@ -1547,14 +1546,10 @@ bool GVN::performPRE(Function& F) { } for (SmallVector<std::pair<TerminatorInst*, unsigned>, 4>::iterator - I = toSplit.begin(), E = toSplit.end(); I != E; ++I) { + I = toSplit.begin(), E = toSplit.end(); I != E; ++I) SplitCriticalEdge(I->first, I->second, this); - BasicBlock* NewBlock = I->first->getSuccessor(I->second); - localAvail[NewBlock] = - new ValueNumberScope(localAvail[I->first->getParent()]); - } - return Changed; + return Changed || toSplit.size(); } // iterateOnFunction - Executes one iteration of GVN |