Tim Northover 41b47904ba ARM64: optimise (cmp x, (sub 0, y)) to (cmn x, y).
This transformation is only valid when being used for an EQ or NE
comparison since the flags change otherwise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206167 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-14 12:50:47 +00:00
..
2014-02-16 07:31:05 +00:00