[Bug target/82659] Unnecessary ENDBR in static/local functions

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82659

--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Oct 24 10:52:50 2017
New Revision: 254040

URL: https://gcc.gnu.org/viewcvs?rev=254040&root=gcc&view=rev
Log:
i386: Don't insert ENDBR at function entrance when called directly

There is no need to insert ENDBR instruction at function entrance if
function is only called directly.

gcc/

        PR target/82659
        * config/i386/i386.c (rest_of_insert_endbranch): Don't insert
        ENDBR instruction at function entrance if function is only
        called directly.

gcc/testsuite/

        PR target/82659
        * gcc.target/i386/cet-label-2.c: New test.
        * gcc.target/i386/cet-sjlj-4.c: Likewise.
        * gcc.target/i386/cet-sjlj-5.c: Likewise.
        * gcc.target/i386/cet-switch-3.c: Likewise.
        * gcc.target/i386/pr82659-1.c: Likewise.
        * gcc.target/i386/pr82659-2.c: Likewise.
        * gcc.target/i386/pr82659-3.c: Likewise.
        * gcc.target/i386/pr82659-4.c: Likewise.
        * gcc.target/i386/pr82659-5.c: Likewise.
        * gcc.target/i386/pr82659-6.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/i386/cet-label-2.c
    trunk/gcc/testsuite/gcc.target/i386/cet-sjlj-4.c
    trunk/gcc/testsuite/gcc.target/i386/cet-sjlj-5.c
    trunk/gcc/testsuite/gcc.target/i386/cet-switch-3.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-3.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-4.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-5.c
    trunk/gcc/testsuite/gcc.target/i386/pr82659-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog