ARM64: add pattern for <1 x i64> custom not node.

This should fix PR19367.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205835 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: scalarize v1i64 mul operation

This is the second part of fixing PR19367.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205836 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Match not instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205837 91177308-0d34-0410-b5e6-96231b3b80d8