[BasicAA] Delete dead code related to memset/memcpy/memmove intrinsics [NFCI]

We only need to describe the writeonly property of one of the arguments. All of the rest of the semantics are nicely described by existing attributes in Intrinsics.td.

Differential Revision: http://reviews.llvm.org/D15880



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256910 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed