[Bug fortran/80975] [7/8 Regression] matmul for zero-length arrays

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80975

--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Jun  6 22:23:07 2017
New Revision: 248935

URL: https://gcc.gnu.org/viewcvs?rev=248935&root=gcc&view=rev
Log:
2017-06-06  Thomas Koenig  <tkoe...@gcc.gnu.org>

        Backport from trunk
        PR fortran/80975
        * m4/matmul_internal.m4:  Move zeroing before early return.
        * generated/matmul_c10.c: Regenerated.
        * generated/matmul_c16.c: Regenerated.
        * generated/matmul_c4.c: Regenerated.
        * generated/matmul_c8.c: Regenerated.
        * generated/matmul_i1.c: Regenerated.
        * generated/matmul_i16.c: Regenerated.
        * generated/matmul_i2.c: Regenerated.
        * generated/matmul_i4.c: Regenerated.
        * generated/matmul_i8.c: Regenerated.
        * generated/matmul_r10.c: Regenerated.
        * generated/matmul_r16.c: Regenerated.
        * generated/matmul_r4.c: Regenerated.
        * generated/matmul_r8.c: Regenerated.

2017-06-06  Thomas Koenig  <tkoe...@gcc.gnu.org>

        Backport from trunk
        PR fortran/80975
        * gfortran.dg/matmul_16.f90: New test.
        * gfortran.dg/inline_matmul_18.f90: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gfortran.dg/inline_matmul_18.f90
    branches/gcc-7-branch/gcc/testsuite/gfortran.dg/matmul_16.f90
Modified:
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/libgfortran/ChangeLog
    branches/gcc-7-branch/libgfortran/Makefile.in
    branches/gcc-7-branch/libgfortran/generated/matmul_c10.c
    branches/gcc-7-branch/libgfortran/generated/matmul_c16.c
    branches/gcc-7-branch/libgfortran/generated/matmul_c4.c
    branches/gcc-7-branch/libgfortran/generated/matmul_c8.c
    branches/gcc-7-branch/libgfortran/generated/matmul_i1.c
    branches/gcc-7-branch/libgfortran/generated/matmul_i16.c
    branches/gcc-7-branch/libgfortran/generated/matmul_i2.c
    branches/gcc-7-branch/libgfortran/generated/matmul_i4.c
    branches/gcc-7-branch/libgfortran/generated/matmul_i8.c
    branches/gcc-7-branch/libgfortran/generated/matmul_r10.c
    branches/gcc-7-branch/libgfortran/generated/matmul_r16.c
    branches/gcc-7-branch/libgfortran/generated/matmul_r4.c
    branches/gcc-7-branch/libgfortran/generated/matmul_r8.c
    branches/gcc-7-branch/libgfortran/m4/matmul_internal.m4