diff options
| author | Owen Anderson <resistor@mac.com> | 2008-07-28 20:52:42 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2008-07-28 20:52:42 +0000 |
| commit | 80e051dfdede65678ac66f1552278338bc1a1b33 (patch) | |
| tree | 26b13381a429746f377e259052050b90b653bcfa | |
| parent | a5d5af985eb3abdf8776d46bc9e9e870ffb2c5d3 (diff) | |
Don't remove volatile loads. Thanks to Duncan for noticing this one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54144 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp index 0011d9566e..b75d5c4be7 100644 --- a/lib/Transforms/Scalar/DeadStoreElimination.cpp +++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp @@ -183,7 +183,7 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) { Instruction* dep = MD.getDependency(S); DominatorTree& DT = getAnalysis<DominatorTree>(); - if (S->getParent() == L->getParent() && + if (!S->isVolatile() && S->getParent() == L->getParent() && S->getPointerOperand() == L->getPointerOperand() && ( dep == MemoryDependenceAnalysis::None || dep == MemoryDependenceAnalysis::NonLocal || |