Revert r195599 as it broke the builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195636 91177308-0d34-0410-b5e6-96231b3b80d8
compnerd · Nov 25, 2013 · 9981247 · 9981247
1 parent 4ac67fa
commit 9981247
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diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -8692,11 +8692,6 @@ bool DAGCombiner::MergeConsecutiveStores(StoreSDNode* St) {
         Index = STn;
         break;
       } else if (LoadSDNode *Ldn = dyn_cast<LoadSDNode>(NextInChain)) {
-        if (Ldn->isVolatile()) {
-          Index = NULL;
-          break;
-        }
-
         // Save the load node for later. Continue the scan.
         AliasLoadNodes.push_back(Ldn);
         NextInChain = Ldn->getChain().getNode();

diff --git a/test/CodeGen/X86/pr18023.ll b/test/CodeGen/X86/pr18023.ll