[PATCH] Peephole optimization causes different code generation at "-O2 -g" and "-O2".

[Eric Christopher]

  This looks fine. If the testcases from the other patch end up changing based on Chandler's review then go ahead and update these as well please?

  You might want to verify that the code generation for your testcases doesn't change on an atom processor :)

  Thanks!

  -eric

http://llvm-reviews.chandlerc.com/D2728