[Bug tree-optimization/60183] [4.7/4.8 Regression] phiprop creates invalid code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60183

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 25 10:47:21 2014
New Revision: 208118

URL: http://gcc.gnu.org/viewcvs?rev=208118&root=gcc&view=rev
Log:
2014-02-25  Richard Biener  <rguenther@suse.de>

    Backport from mainline
    2014-02-21  Richard Biener  <rguenther@suse.de>

    PR middle-end/60291
    * tree-ssa-live.c (mark_all_vars_used_1): Do not walk
    DECL_INITIAL for globals not in the current function context.

    2014-02-20  Richard Biener  <rguenther@suse.de>

    PR middle-end/60221
    * tree-eh.c (execute_cleanup_eh_1): Also cleanup empty EH
    regions at -O0.

    2014-02-14  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/60183
    * tree-ssa-phiprop.c (propagate_with_phi): Avoid speculating
    loads.
    (tree_ssa_phiprop): Calculate and free post-dominators.

    * gcc.dg/torture/pr60183.c: New testcase.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr60183.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_8-branch/gcc/tree-eh.c
    branches/gcc-4_8-branch/gcc/tree-ssa-live.c
    branches/gcc-4_8-branch/gcc/tree-ssa-phiprop.c