[PATCH] Fix SROA creating invalid bitcasts between address spaces

[David Tweed]

  I think it's important to stop the crashing when doing SROA on this kind of code. This patch seems like the right way to do this, so I think moving it in to trunk (at least) is warranted. However, I don't claim to fully understand the intricacies of SROA so I'd prefer someone knowledgeable to do another pass on this.

http://llvm-reviews.chandlerc.com/D1764