diff options
Diffstat (limited to 'lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index c6708857cb..3968d6e8d3 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -247,11 +247,13 @@ static bool DominatesMergePoint(Value *V, BasicBlock *BB, if (PBB->getFirstNonPHIOrDbg() != I) return false; break; - case Instruction::GetElementPtr: - // GEPs are cheap if all indices are constant. - if (!cast<GetElementPtrInst>(I)->hasAllConstantIndices()) + case Instruction::GetElementPtr: { + // GEPs are cheap if all indices are constant or if there's only one index. + GetElementPtrInst *GEP = cast<GetElementPtrInst>(I); + if (!GEP->hasAllConstantIndices() && GEP->getNumIndices() > 1) return false; break; + } case Instruction::Add: case Instruction::Sub: case Instruction::And: |