diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp index 5a055139be4f..bb5ec253cbf2 100644 --- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -597,9 +597,13 @@ static bool moveUp(AliasAnalysis &AA, StoreInst *SI, Instruction *P, ToLift.push_back(C); for (unsigned k = 0, e = C->getNumOperands(); k != e; ++k) - if (auto *A = dyn_cast<Instruction>(C->getOperand(k))) - if (A->getParent() == SI->getParent()) + if (auto *A = dyn_cast<Instruction>(C->getOperand(k))) { + if (A->getParent() == SI->getParent()) { + // Cannot hoist user of P above P + if(A == P) return false; Args.insert(A); + } + } } // We made it, we need to lift |