[Bug tree-optimization/59287] points-to analysis confused by union accesses

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59287

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Nov 26 09:04:44 2013
New Revision: 205380

URL: http://gcc.gnu.org/viewcvs?rev=205380&root=gcc&view=rev
Log:
2013-11-26  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/59287
    * tree-ssa-structalias.c (get_constraint_for_component_ref):
    Remove no longer necessary special-casing of union accesses.

    * gcc.dg/tree-ssa/alias-29.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-29.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-structalias.c