r259342 - in /branches/gcc-6-branch/gcc: Change...

[krebbel@gcc.gnu.org]

Author: krebbel
Date: Thu Apr 12 10:22:35 2018
New Revision: 259342

URL: https://gcc.gnu.org/viewcvs?rev=259342&root=gcc&view=rev
Log:
IBM Z: Spectre: Prevent thunk cfi to be emitted with -fno-dwarf2-cfi-asm

The CFI magic we emit as part of the indirect branch thunks in order to
have somewhat sane unwind information must not be emitted with
-fno-dwarf2-cfi-asm.

gcc/ChangeLog:

2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	Backport from mainline
	2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390.c (s390_output_indirect_thunk_function): Check
	also for flag_dwarf2_cfi_asm.

gcc/testsuite/ChangeLog:

2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	Backport from mainline
	2018-04-12  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/nobp-no-dwarf2-cfi.c: New test.


Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.target/s390/nobp-no-dwarf2-cfi.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/s390/s390.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog