[DAGCombiner] move fadd simplification ahead of other folds
  
I don't know if it's possible to expose this diff in a test,
but we should always try simplifications (no new nodes created)
before more complicated transforms for efficiency (similar to
what we do in IR).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@339298 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed