[PATCH] [InstCombine] Canonicalize addrspacecast between different element types

[Matt Arsenault]

LGTM

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Comment at: lib/Transforms/InstCombine/InstCombineCasts.cpp:1925-1926
@@ +1924,4 @@
+
+    // Putting bitcast before addrspacecast helps NVPTXFavorNonGenericAddrSpaces
+    // to fold the addrspacecast into load/store.
+    Value *NewBitCast = Builder->CreateBitCast(Src, MidTy);
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I would remove  the comment about a specific target pass

http://reviews.llvm.org/D4013