diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 6ac039d8a1a..6d347d624e2 100644 --- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1448,10 +1448,14 @@ static Value *isSafeToSpeculateStore(Instruction *I, BasicBlock *BrBB, Value *StorePtr = StoreToHoist->getPointerOperand(); // Look for a store to the same pointer in BrBB. - unsigned MaxNumInstToLookAt = 10; + unsigned MaxNumInstToLookAt = 9; for (BasicBlock::reverse_iterator RI = BrBB->rbegin(), - RE = BrBB->rend(); RI != RE && (--MaxNumInstToLookAt); ++RI) { + RE = BrBB->rend(); RI != RE && MaxNumInstToLookAt; ++RI) { Instruction *CurI = &*RI; + // Skip debug info. + if (isa<DbgInfoIntrinsic>(CurI)) + continue; + --MaxNumInstToLookAt; // Could be calling an instruction that effects memory like free(). if (CurI->mayHaveSideEffects() && !isa<StoreInst>(CurI)) |
