On Tue, Feb 12, 2013 at 8:45 PM, Igor Zamyatin <izamya...@gmail.com> wrote:
> This patch updates GCC 4.8 changes.html to mention Broadwell's > features, RTM and HLE support and fixed pre-reload scheduler. > > OK to commit? > > > Thanks, > Igor > > Index: htdocs/gcc-4.8/changes.html > =================================================================== > RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v > retrieving revision 1.95 > diff -c -r1.95 changes.html > *** htdocs/gcc-4.8/changes.html 11 Feb 2013 15:12:58 -0000 1.95 > --- htdocs/gcc-4.8/changes.html 12 Feb 2013 15:10:41 -0000 > *************** > *** 460,465 **** > --- 460,471 ---- > wrong results. You must build all > modules with <code>-mpreferred-stack-boundary=3</code>, including any > libraries. This includes the system libraries and startup modules.</li> > + <li>Support for the new Intel processor codename Broadwell with RDSEED, > + ADCX, ADOX, PREFETCHW is available through <code>-madx</code>, > + <code>-mprfchw</code>, <code>-mrdseed</code>. > + </li> > + <li> Support for Intel RTM and HLE intrinsics, built-in > functions and code generation is available via -mrtm and -mhle. > + </li> Please also mention new -mfxsr, -mxsave and -mxsaveopt options. > <li> New built-in functions to detect run-time CPU type and ISA: > <ul> > <li>A built-in function <code>__builtin_cpu_is</code> has been added > to > *************** > *** 524,529 **** > --- 530,538 ---- > <a href="http://gcc.gnu.org/wiki/FunctionMultiVersioning";>wiki</a> > for more > information. > </li> > + <li> Problem with instability of pre-reload scheduler on x86 > targets was fixed. Now option -fschedule-insn > + can be used loosely to reach better performance. "used loosely" in what sense? Thanks, Uros.
