r257809 - in /trunk: config/ChangeLog config/ce...

[itsimbal@gcc.gnu.org]

Author: itsimbal
Date: Mon Feb 19 16:25:49 2018
New Revision: 257809

URL: https://gcc.gnu.org/viewcvs?rev=257809&root=gcc&view=rev
Log:
CET shouldn't be enabled in 32-bit run-time libraries by defualt

ENDBR32 and RDSSPD are multi-byte NOPs on x86-64 processors and
newer x86 processors, starting Pentium Pro.  They are UD on older
32-bit processors. Detect this at configure time and adjust the
default value for enable_cet. GCC will enable CET in 32-bit run-time
libraries in any case if --enable-cet is used to configure GCC.

	PR target/84148
	* config/cet.m4: Check if target support multi-byte NOPS (SSE).
	* libatomic/configure: Regenerate.
	* libbacktrace/configure: Likewise.
	* libgcc/configure: Likewise.
	* libgfortran/configure: Likewise.
	* libgomp/configure: Likewise.
	* libitm/configure: Likewise.
	* libmpx/configure: Likewise.
	* libobjc/configure: Likewise.
	* libquadmath/configure: Likewise.
	* libsanitizer/configure: Likewise.
	* libssp/configure: Likewise.
	* libstdc++-v3/configure: Likewise.
	* libvtv/configure: Likewise.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/configure

Changes in other areas also in this revision:
Modified:
    trunk/config/ChangeLog
    trunk/config/cet.m4
    trunk/libatomic/ChangeLog
    trunk/libatomic/configure
    trunk/libbacktrace/ChangeLog
    trunk/libbacktrace/configure
    trunk/libgcc/ChangeLog
    trunk/libgcc/configure
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/configure
    trunk/libgomp/ChangeLog
    trunk/libgomp/configure
    trunk/libitm/ChangeLog
    trunk/libitm/configure
    trunk/libmpx/ChangeLog
    trunk/libmpx/configure
    trunk/libobjc/ChangeLog
    trunk/libobjc/configure
    trunk/libquadmath/ChangeLog
    trunk/libquadmath/configure
    trunk/libsanitizer/ChangeLog
    trunk/libsanitizer/configure
    trunk/libssp/ChangeLog
    trunk/libssp/configure
    trunk/libvtv/ChangeLog
    trunk/libvtv/configure