[Bug tree-optimization/64357] [5 Regression] ICE at -Os on x86_64-linux-gnu in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:579

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64357

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 12 15:34:37 2015
New Revision: 219473

URL: https://gcc.gnu.org/viewcvs?rev=219473&root=gcc&view=rev
Log:
2015-01-12  Richard Biener  <rguenther@suse.de>

    PR middle-end/64357
    * tree-cfg.c (gimple_can_merge_blocks_p): Protect simple
    latches properly.

    * gcc.dg/torture/pr64357.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr64357.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfg.c