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* [InstCombine] Transform bcopy to memmoveDavid Bolvansky2019-10-021-0/+25
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
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