[Bug tree-optimization/66794] [6 Regression] ICE at -O2 and -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66794

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jul  8 11:47:42 2015
New Revision: 225545

URL: https://gcc.gnu.org/viewcvs?rev=225545&root=gcc&view=rev
Log:
2015-07-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/66794
        * passes.c (execute_function_todo): Assert that post-dominators
        are not computed.
        * gimple-ssa-isolate-paths.c (gimple_ssa_isolate_erroneous_paths):
        Free post-dominators.

        * gcc.dg/torture/pr66794.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr66794.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-isolate-paths.c
    trunk/gcc/passes.c
    trunk/gcc/testsuite/ChangeLog