[Bug tree-optimization/57396] [4.8 Regression] Wrong code with -fpredictive-commoning in Fortran double-loop

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57396

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.9.0
   Target Milestone|4.7.4                       |4.8.2
            Summary|[4.8/4.9 Regression] Wrong  |[4.8 Regression] Wrong code
                   |code with                   |with -fpredictive-commoning
                   |-fpredictive-commoning in   |in Fortran double-loop
                   |Fortran double-loop         |
      Known to fail|4.9.0                       |4.8.1

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon May 27 07:48:37 2013
New Revision: 199350

URL: http://gcc.gnu.org/viewcvs?rev=199350&root=gcc&view=rev
Log:
2013-05-27  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/57396
    * tree-affine.c (double_int_constant_multiple_p): Properly
    return false for val == 0 and div != 0.

    * gfortran.fortran-torture/execute/pr57396.f90: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.fortran-torture/execute/pr57396.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-affine.c