[Bug tree-optimization/70614] [4.9/5/6 Regression] GCC gets stuck with -O

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70614

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Apr 14 13:21:40 2016
New Revision: 234972

URL: https://gcc.gnu.org/viewcvs?rev=234972&root=gcc&view=rev
Log:
2016-04-14  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/70614
        * tree-scalar-evolution.c (analyze_evolution_in_loop): Terminate
        loop if the evolution dropped to chrec_dont_know.
        (interpret_condition_phi): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-scalar-evolution.c