[Bug middle-end/83945] [7/8 Regression] internal compiler error: Segmentation fault with -O -fcode-hoisting

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83945

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Jan 20 09:58:31 2018
New Revision: 256916

URL: https://gcc.gnu.org/viewcvs?rev=256916&root=gcc&view=rev
Log:
        PR middle-end/83945
        * tree-emutls.c: Include gimplify.h.
        (lower_emutls_2): New function.
        (lower_emutls_1): If ADDR_EXPR is a gimple invariant and walk_tree
        with lower_emutls_2 callback finds some TLS decl in it, unshare_expr
        it before further processing.

        * gcc.dg/tls/pr83945.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tls/pr83945.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-emutls.c