[Bug target/87412] -fcf-protection and -mindirect-branch=thunk are incompatible on x86_64

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87412

--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Feb 21 13:41:53 2019
New Revision: 269068

URL: https://gcc.gnu.org/viewcvs?rev=269068&root=gcc&view=rev
Log:
i386: Check -mindirect-branch/-mfunction-return with -fcf-protection

Issue an error when -mindirect-branch or -mfunction-return are used
with incompatible -fcf-protection.

gcc/

        PR target/87412
        * config/i386/i386.c (ix86_set_indirect_branch_type): Issue an
        error for -mindirect-branch/-mfunction-return with incompatible
        -fcf-protection.

gcc/testsuite/

        PR target/87412
        * gcc.target/i386/pr87412-1.c: New file.
        * gcc.target/i386/pr87412-2.c: Likewise.
        * gcc.target/i386/pr87412-3.c: Likewise.
        * gcc.target/i386/pr87412-4.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr87412-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr87412-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr87412-3.c
    trunk/gcc/testsuite/gcc.target/i386/pr87412-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog