[PATCH] Fix assert with copy from global through addrspacecast

[Matt Arsenault]

================
Comment at: lib/IR/Constants.cpp:1510
@@ +1509,3 @@
+  return getBitCast(S, Ty);
+}
+
----------------
Michele Scandale wrote:
> Maybe this function can be fused within getPointerCast in order to support there the case of pointers with different address spaces.
I tried that originally, but the results weren't satisfying. The asserts are different since getBitCastOrAddrSpaceCast only accepts pointer<->pointer casts, while getPointerCast accepts integer destinations.


http://llvm-reviews.chandlerc.com/D2205