tree 8a274c6b67a237a9cc31aa2278408a823bb615fe
parent 765a7627d9b524d7078c03464432bced5fb777b4
author Tim Northover <tnorthover@apple.com> 1545059132 +0000
committer Tim Northover <tnorthover@apple.com> 1545059132 +0000

ARM: use acquire/release instruction variants when available.

These features (fairly) recently got split out into their own feature, so we
should make CodeGen use them when available. The main change here is that the
check used to be based on the triple, but now it's based on CPU features.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349355 91177308-0d34-0410-b5e6-96231b3b80d8