Dan Gohman aae317ac32 Fix a bug in x86's PreprocessForRMW logic that was exposed
by aggressive chain operand optimization. UpdateNodeOperands
does not modify the node in place if it would result in
a node identical to an existing node.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78297 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06 09:22:57 +00:00
..
2009-08-05 20:16:55 +00:00