[PATCH] merge vector stores into wider vector stores (PR21711)

[hfinkel at anl.gov]

LGTM.


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Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:9860
@@ -9859,1 +9859,3 @@
+  bool IsExtractVecSrc = (StoredVal.getOpcode() == ISD::EXTRACT_VECTOR_ELT ||
+                             StoredVal.getOpcode() == ISD::EXTRACT_SUBVECTOR);
    
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Indenting looks odd here.

http://reviews.llvm.org/D7208

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