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[PATCH] MPX and CET changes in release notes


MPX is going to be deprecated in gcc-8. Control-flow protection support is in gcc-8.
Reflect these in Release Notes for gcc-8.

Ok for trunk?

Igor


Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-8/changes.html,v
retrieving revision 1.36
diff -r1.36 changes.html
34a35,38
>   <li>
>     The MPX extensions to the C and C++ languages have been deprecated and
>     will be removed in a future release.
>   </li>
43a48,56
>   <li>
>     A new option <code>-fcf-protection=[full|branch|return|none]</code> is
>     introduced to perform a code instrumentation to increase program security by
>     checking that target addresses of control-flow transfer instructions (such as
>     indirect function call, function return, indirect jump) are valid. Currently
>     the instrumentation is supported on x86 GNU/Linux target only. See, the user
>     guide for further information about the option syntax and section "New Targets
>     and Target Specific Improvements" for IA-32/x86-64 for more details.
>   </li>
402a416,421
>   <li>
>     GCC now supports the Intel Control-flow Enforcement Technology (CET)
>     extension through <code>-mibt, -mshstk, -mcet</code> options. One of these
>     options has to accompany the <code>-fcf-protection</code> option to enable
>     the code instrumentation for control-flow protection.
>   </li>

Igor



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