[Bug other/63387] Optimize pairs of isnan() calls into a single isunordered()

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63387

--- Comment #6 from Marc Glisse <glisse at gcc dot gnu.org> ---
Author: glisse
Date: Tue Apr 14 08:49:16 2015
New Revision: 222077

URL: https://gcc.gnu.org/viewcvs?rev=222077&root=gcc&view=rev
Log:
2015-04-14  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.


Added:
    trunk/gcc/testsuite/gcc.dg/pr63387.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog