diff options
| -rw-r--r-- | lib/Transforms/Scalar/FastDSE.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/Transforms/Scalar/FastDSE.cpp b/lib/Transforms/Scalar/FastDSE.cpp index 13e6136..901a735 100644 --- a/lib/Transforms/Scalar/FastDSE.cpp +++ b/lib/Transforms/Scalar/FastDSE.cpp @@ -60,9 +60,18 @@ namespace { assert(isa<PointerType>(v->getType()) && "Translating a non-pointer type?"); // See through pointer-to-pointer bitcasts - while (BitCastInst* C = dyn_cast<BitCastInst>(v)) - if (isa<PointerType>(C->getSrcTy())) - v = C->getOperand(0); + while (isa<BitCastInst>(v) || isa<GetElementPtrInst>(v)) + if (BitCastInst* C = dyn_cast<BitCastInst>(v)) { + if (isa<PointerType>(C->getSrcTy())) + v = C->getOperand(0); + else + break; + } else if (GetElementPtrInst* G = dyn_cast<GetElementPtrInst>(v)) { + if (G->hasAllZeroIndices()) + v = G->getOperand(0); + else + break; + } } // getAnalysisUsage - We require post dominance frontiers (aka Control |