Eric Christopher edf0dda528 Temporarily revert "Subtract isn't commutative, fix this for MMX psub."
It's causing failures on the atom bot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181812 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-14 18:20:42 +00:00
..
2013-04-22 15:16:51 +00:00