tree 18f8e328a0ad052227d7aa826a3ab06874925a53
parent b456d6fdcf0dbbd3c3b8c08c2cc5562d806621c9
author Serguei Katkov <serguei.katkov@azul.com> 1547613386 +0000
committer Serguei Katkov <serguei.katkov@azul.com> 1547613386 +0000

[InstCombine]Avoid introduction of unaligned mem access

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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351295 91177308-0d34-0410-b5e6-96231b3b80d8