[PATCH] Fix load-store optimizer on thumbv4t

[Jonathan Roelofs]

Hi jmolloy, mroth, t.p.northover,

This is another instance of the lo->lo copy problem. Unfortunately, I don't have a testcase.

http://reviews.llvm.org/D6592

Files:
  llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp

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