Hi Richard and Gerald, This patch adds the documentation in changes.html for the GCC trunk (gcc-6) .
Please let me know if it is good to commit. Index: htdocs/gcc-6/changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/changes.html,v retrieving revision 1.13 diff -r1.13 changes.html 100,101c100,112 < <!-- <h3 id="x86">IA-32/x86-64</h3> --> < --- > <h3 id="x86">IA-32/x86-64</h3> > <ul> > <li> > Support for new AMD instructions <code>monitorx</code> and > <code>mwaitx</code> has been added. This includes new intrinsic > and built-in support. It is enabled through option > <code>-mmwaitx</code>. > The instructions <code>monitorx</code> and <code>mwaitx</code> > implement the same functionality as the old <code>monitor</code> > and <code>mwait</code> instructions. In addition <code>mwaitx</code> > adds a configurable timer. The timer value is received as third > argument and stored in register <code>%ebx</code>. > </li> > </ul> Regards, Venkat.