[Bug middle-end/81908] [8 Regression] FAIL: gfortran.dg/alloc_comp_auto_array_2.f90 -O3 -g -m32

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81908

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Aug 25 00:25:57 2017
New Revision: 251347

URL: https://gcc.gnu.org/viewcvs?rev=251347&root=gcc&view=rev
Log:
PR middle-end/81908 - FAIL: gfortran.dg/alloc_comp_auto_array_2.f90 -O3 -g -m32

gcc/ChangeLog:

        PR middle-end/81908
        * gimple-fold.c (size_must_be_zero_p): New function.
        (gimple_fold_builtin_memory_op): Call it.

gcc/testsuite/ChangeLog:

        PR middle-end/81908
        * gcc.dg/tree-ssa/builtins-folding-gimple-2.c: New test.
        * gcc.dg/tree-ssa/builtins-folding-gimple-3.c: New test.
        * gcc.dg/tree-ssa/pr81908.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/builtins-folding-gimple-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr81908.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog