[Bug fortran/71961] [7 Regression] 178.galgel in SPEC CPU 2000 is miscompiled

[renlin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71961

--- Comment #14 from Renlin Li <renlin at gcc dot gnu.org> ---
Author: renlin
Date: Thu Jul 28 11:21:53 2016
New Revision: 238815

URL: https://gcc.gnu.org/viewcvs?rev=238815&root=gcc&view=rev
Log:
[PATCH] Revert Revert r238497 because of PR 71961.

This patch reverts the change for PR 71902 since it causes 178.gagel
miscompile in spec2000 as reported in PR 71961 which was observed in
x86_64, aarch64, powerpc64.

gcc/fortran/ChangeLog:

2016-07-28  Renlin Li  <renlin.li@arm.com>

        Revert
        2016-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/71902
        * dependency.c (gfc_check_dependency): Use dep_ref.  Handle case
        if identical is true and two array element references differ.
        (gfc_dep_resovler):  Move most of the code to dep_ref.
        (dep_ref):  New function.
        * frontend-passes.c (realloc_string_callback):  Name temporary
        variable "realloc_string".

gcc/testsuite/ChangeLog:

2016-07-28  Renlin Li  <renlin.li@arm.com>

        Revert
        2016-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/71902
        * gfortran.dg/dependency_47.f90:  New test.


Removed:
    trunk/gcc/testsuite/gfortran.dg/dependency_47.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/dependency.c
    trunk/gcc/fortran/frontend-passes.c
    trunk/gcc/testsuite/ChangeLog