diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/NewGVN.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/NewGVN.cpp b/llvm/lib/Transforms/Scalar/NewGVN.cpp index fe5a43872f5..747c913278f 100644 --- a/llvm/lib/Transforms/Scalar/NewGVN.cpp +++ b/llvm/lib/Transforms/Scalar/NewGVN.cpp @@ -1936,6 +1936,12 @@ void NewGVN::convertDenseToDFSOrdered( IBlock = I->getParent(); VD.LocalNum = InstrDFS.lookup(I); } + + // Skip uses in unreachable blocks, as we're going + // to delete them. + if (ReachableBlocks.count(IBlock) == 0) + continue; + DomTreeNode *DomNode = DT->getNode(IBlock); VD.DFSIn = DomNode->getDFSNumIn(); VD.DFSOut = DomNode->getDFSNumOut(); |
