Hello,

just a simple pattern for match.pd. I am ignoring the issue of whether 
isnan is the same as isunordered, I am only combining isunordered 
together.

2015-04-13  Marc Glisse  <marc.glisse@inria.fr>

 	PR tree-optimization/63387
gcc/
 	* match.pd ((x unord x) | (y unord y) -> (x unord y),
 	(x unord x) | (x unord y) -> (x unord y)): New simplifications.
gcc/testsuite/
 	* gcc.dg/pr63387.c: New testcase.

-- 
Marc Glisse