AArch64: Pattern match integer vector abs like we do on ARM.

This kind of pattern is emitted by the loop vectorizer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221289 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Rename div_scale dest operands to match documentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221291 91177308-0d34-0410-b5e6-96231b3b80d8