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| author | Chris Lattner <sabre@nondot.org> | 2007-12-29 07:15:45 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-12-29 07:15:45 +0000 |
| commit | 3d98c49d173bdccb5fc23a73691701af6ef033cc (patch) | |
| tree | 4fe46ae87cf750f2ccc75358b566b9ff2bc59680 /lib | |
| parent | 8b815c2c69c523237b07180988a73636994e66f7 (diff) | |
| download | external_llvm-3d98c49d173bdccb5fc23a73691701af6ef033cc.tar.gz external_llvm-3d98c49d173bdccb5fc23a73691701af6ef033cc.tar.bz2 external_llvm-3d98c49d173bdccb5fc23a73691701af6ef033cc.zip | |
make sure not to zap volatile stores, thanks a lot to Dale for noticing this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45402 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 0ee4557563..cfa46e6b59 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -4252,7 +4252,8 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) { if (LoadSDNode *Ld = dyn_cast<LoadSDNode>(Value)) { if (Chain.Val == Ld && Ld->getBasePtr() == Ptr && ST->getAddressingMode() == ISD::UNINDEXED && - ST->getStoredVT() == Ld->getLoadedVT()) { + ST->getStoredVT() == Ld->getLoadedVT() && + !ST->isVolatile()) { // The store is dead, remove it. return Chain; } |