[Bug tree-optimization/50955] [4.7 Regression] IVopts incorrectly rewrite the address of a global memory access into a local form.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50955

--- Comment #12 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-06 13:43:06 UTC ---
Author: rguenth
Date: Mon Feb  6 13:43:03 2012
New Revision: 183934

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183934
Log:
2012-02-06  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50955
    * tree-ssa-loop-ivopts.c (get_computation_cost_at): Artificially
    raise cost of expressions that replace an address with an
    expression based on a different pointer.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-loop-ivopts.c