[Bug c/89872] [7/8 Regression] GCC does not generate read access to volatile compound literal

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89872
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Apr 30 20:55:58 2019
New Revision: 270743

URL: https://gcc.gnu.org/viewcvs?rev=270743&root=gcc&view=rev
Log:
        Backported from mainline
        2019-03-29  Jakub Jelinek  <ja...@redhat.com>

        PR c/89872
        * gimplify.c (gimplify_compound_literal_expr): Don't optimize a
        non-addressable complit into its initializer if it is volatile.

        * gcc.dg/tree-ssa/pr89872.c: New test.

Added:
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/tree-ssa/pr89872.c
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/gimplify.c
    branches/gcc-8-branch/gcc/testsuite/ChangeLog