[Bug fortran/83650] [6/7/8 Regression] Wrong simplification in cshift with negative shifts

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83650

--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Jan  2 17:51:26 2018
New Revision: 256084

URL: https://gcc.gnu.org/viewcvs?rev=256084&root=gcc&view=rev
Log:
2018-01-02  Thomas Koenig  <tkoe...@gcc.gnu.org>

        PR fortran/45689
        PR fortran/83650
        * simplify.c (gfc_simplify_cshift): Re-implement to allow full
        range of arguments.

2018-01-02  Thomas Koenig  <tkoe...@gcc.gnu.org>

        PR fortran/45689
        PR fortran/83650
        * gfortran.dg/simplify_cshift_1.f90: Correct erroneous case.
        * gfortran.dg/simplify_cshift_4.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/simplify_cshift_4.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/simplify.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/simplify_cshift_1.f90