[Bug tree-optimization/60903] [4.8/4.9/4.10 Regression] ICE: in verify_loop_structure, at cfgloop.c:1647: : edge from 13 to 14 should be marked irreducible

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60903

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Apr 23 11:27:29 2014
New Revision: 209695

URL: http://gcc.gnu.org/viewcvs?rev=209695&root=gcc&view=rev
Log:
2014-04-23  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/60903
    * tree-ssa-loop-im.c (analyze_memory_references): Remove
    commented code block.
    (execute_sm_if_changed): Properly apply IRREDUCIBLE_LOOP
    loop flags to newly created BBs and edges.

    * gcc.dg/torture/pr60903.c: New testcase.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/torture/pr60903.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_9-branch/gcc/tree-ssa-loop-im.c