Author: lattner
Date: Sat Dec 29 01:15:45 2007
New Revision: 45402
URL: http://llvm.org/viewvc/llvm-project?rev=45402&view=rev
Log:
make sure not to zap volatile stores, thanks a lot to Dale for noticing this!
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=45402&r1=45401&r2=45402&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Sat Dec 29 01:15:45 2007
@@ -4252,7 +4252,8 @@
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;
}
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