[Bug c/89872] [7 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 #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Aug 30 12:33:40 2019
New Revision: 275144

URL: https://gcc.gnu.org/viewcvs?rev=275144&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-7-branch/gcc/testsuite/gcc.dg/tree-ssa/pr89872.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/gimplify.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog