[Bug tree-optimization/50389] [4.7 Regression] ICE: in execute_todo, at passes.c:1730 with -O -freorder-blocks -ftracer and __builtin___memcpy_chk()

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50389

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-10 
15:45:58 UTC ---
Author: rguenth
Date: Mon Oct 10 15:45:53 2011
New Revision: 179757

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179757
Log:
2011-10-10  Richard Guenther  <rguent...@suse.de>

    PR middle-end/50389
    * gimple-fold.c (gimplify_and_update_call_from_tree): Do not
    mark symbols for renaming.  Append the VUSE to all statements
    that possibly can have one.

    * gcc.dg/torture/pr50389.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr50389.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog