r235448 - in /trunk/gcc: ChangeLog match.pd tes...

[glisse@gcc.gnu.org]

Author: glisse
Date: Tue Apr 26 15:03:08 2016
New Revision: 235448

URL: https://gcc.gnu.org/viewcvs?rev=235448&root=gcc&view=rev
Log:
match.pd: u + 3 < u is u > UINT_MAX - 3

2016-04-26  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* match.pd (X + CST CMP X): New transformation.

gcc/testsuite/
	* gcc.dg/tree-ssa/overflow-1.c: New testcase.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/overflow-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog