David Bolvansky 6b45029676 [InstCombine] Transform bcopy to memmove ...

bcopy is still widely used mainly for network apps. Sadly, LLVM has no optimizations for bcopy, but there are some for memmove. 
Since bcopy == memmove, it is profitable to transform bcopy to memmove and use current optimizations for memmove for free here.

llvm-svn: 373537

2019-10-02 22:49:20 +00:00

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