[PATCH] InstCombine: extract instead of shuffle when performing vector/array type punning

[JF Bastien]

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Comment at: lib/Transforms/InstCombine/InstCombineVectorOps.cpp:1087
@@ -983,3 +1086,3 @@
   if (!LHSShuffle && !RHSShuffle)
     return MadeChange ? &SVI : nullptr;
 
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Note that the code I'm adding must precede this code, which causes the visitor to bail early.

http://reviews.llvm.org/D7734

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