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Chris Lattner
95a959dc1a
Teach instcombine to increase the alignment of memset/memcpy/memmove when
the pointer is known to come from either a global variable, alloca or malloc. This allows us to compile this: P = malloc(28); memset(P, 0, 28); into explicit stores on PPC instead of a memset call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26577 91177308-0d34-0410-b5e6-96231b3b80d8
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