When the target-independent DAGCombiner inferred a higher alignment for a load,

[oota-llvm.git] / lib / CodeGen / SelectionDAG / DAGCombiner.cpp

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 79ec227a22b2c7b87ac451db08cd91768d5dd112..39a8e82796abdaeed12baed990ba5a10845826fe 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -7199,12 +7199,15 @@ SDValue DAGCombiner::visitLOAD(SDNode *N) {
   // Try to infer better alignment information than the load already has.
   if (OptLevel != CodeGenOpt::None && LD->isUnindexed()) {
     if (unsigned Align = DAG.InferPtrAlignment(Ptr)) {
-      if (Align > LD->getAlignment())
-        return DAG.getExtLoad(LD->getExtensionType(), N->getDebugLoc(),
+      if (Align > LD->getAlignment()) {
+        SDValue NewLoad =
+               DAG.getExtLoad(LD->getExtensionType(), N->getDebugLoc(),
                               LD->getValueType(0),
                               Chain, Ptr, LD->getPointerInfo(),
                               LD->getMemoryVT(),
                               LD->isVolatile(), LD->isNonTemporal(), Align);
+        return CombineTo(N, NewLoad, SDValue(NewLoad.getNode(), 1), true);
+      }
     }
   }