[PATCH] SROA fix to avoid invalid bitcast generation when converting a load from a double pointer bitcasted with an address space change of the pointee pointee

[Matt Arsenault]

  Actually I don't see the problem. I just tried your testcase with current trunk, and SROA makes no change to the IR. The testcase also involves bitcasts between pointers to pointers with an address space, which should be fine.

http://llvm-reviews.chandlerc.com/D3002