[Bug tree-optimization/60183] [4.7/4.8/4.9 Regression] phiprop creates invalid code

[rguenth at gcc dot gnu.org]

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

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Sat Feb 15 09:54:52 2014
New Revision: 207797

URL: http://gcc.gnu.org/viewcvs?rev=207797&root=gcc&view=rev
Log:
2014-02-15  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:
    trunk/gcc/testsuite/gcc.dg/torture/pr60183.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiprop.c