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a5b0e5585b
InstCombine is able to transform mem transfer instrinsic to alone store or store/load pair. It might result in generation of unaligned atomic load/store which later in backend will be transformed to libcall. It is not an evident gain and it is better to keep intrinsic as is and handle it at backend. Reviewers: reames, anna, apilipenko, mkazantsev Reviewed By: reames Subscribers: t.p.northover, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D56582 llvm-svn: 351295