[Bug tree-optimization/34114] Missed optimization: cannot determine loop termination

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34114

--- Comment #8 from amker at gcc dot gnu.org ---
Author: amker
Date: Tue Aug  2 10:13:28 2016
New Revision: 238983

URL: https://gcc.gnu.org/viewcvs?rev=238983&root=gcc&view=rev
Log:
        PR tree-optimization/34114
        * tree-ssa-loop-niter.c (number_of_iterations_ne): Prove no-overflow
        information for more control IVs.

        gcc/testsuite
        PR tree-optimization/34114
        * gcc.dg/tree-ssa/loop-42.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/loop-42.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-niter.c