diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 21:55:13 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 21:55:13 +0000 |
| commit | b96995b67f15110f39c41149543e19c8189abdaf (patch) | |
| tree | 1971f6467f0c9a77b68ee72bcba9b89bbea52f08 /llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp | |
| parent | fa0a39b7ea7d26d220d018044055197a5284f2b5 (diff) | |
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 5a055139be4fa..bb5ec253cbf27 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 |