On Thu, Sep 23, 2021 at 6:58 PM Hongtao Liu <crazy...@gmail.com> wrote: > > On Fri, Sep 24, 2021 at 9:42 AM H.J. Lu <hjl.to...@gmail.com> wrote: > > > > On Thu, Sep 23, 2021 at 6:38 PM Hongtao Liu <crazy...@gmail.com> wrote: > > > > > > On Fri, Sep 24, 2021 at 9:20 AM H.J. Lu <hjl.to...@gmail.com> wrote: > > > > > > > > On Thu, Sep 23, 2021 at 6:17 PM liuhongt <hongtao....@intel.com> wrote: > > > > > > > > > > Updated, mention _Float16 support. > > > > > > > > > > --- > > > > > htdocs/gcc-12/changes.html | 13 ++++++++++++- > > > > > 1 file changed, 12 insertions(+), 1 deletion(-) > > > > > > > > > > diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html > > > > > index 81f62fe3..f19c6718 100644 > > > > > --- a/htdocs/gcc-12/changes.html > > > > > +++ b/htdocs/gcc-12/changes.html > > > > > @@ -165,7 +165,18 @@ a work-in-progress.</p> > > > > > </li> > > > > > </ul> > > > > > > > > > > -<!-- <h3 id="x86">IA-32/x86-64</h3> --> > > > > > +<h3 id="x86">IA-32/x86-64</h3> > > > > > +<ul> > > > > > + <li>New ISA extension support for Intel AVX512-FP16 was added to > > > > > GCC. > > > > > + AVX512FP16 intrinsics are available via the > > > > > <code>-mavx512fp16</code> > > > > > + compiler switch. > > > > > + </li> > > > > > + <li>For both C and C++, The <code>_Float16</code> type is > > > > > supported on > > > > > + x86 systems with SSE2 enabled. Without > > > > > <code>{-mavx512fp16}</code>, > > > > > + <code>_Float16</code> type is storage only, all operations > > > > > will be > > > > > > > > I don't think _Float16 is storage only without AVX512FP16. > > > > > > > I guess you're meaning that psABI is available for _Float16 even w/o > > > AVX512-FP16. > > > > > > How about > > > > > > + <li>For both C and C++, The <code>_Float16</code> type is supported on > > > + x86 systems with SSE2 enabled. Without <code>{-mavx512fp16}</code>, > > > + no real AVX512-FP16 instructions are generated, all operations > > > will be > > > > No need for "no real AVX512-FP16 instructions are generated". > Updated. > > -<!-- <h3 id="x86">IA-32/x86-64</h3> --> > +<h3 id="x86">IA-32/x86-64</h3> > +<ul> > + <li>New ISA extension support for Intel AVX512-FP16 was added to GCC. > + AVX512FP16 intrinsics are available via the <code>-mavx512fp16</code> > + compiler switch. > + </li> > + <li>For both C and C++, The <code>_Float16</code> type is supported on > + x86 systems with SSE2 enabled. Without <code>{-mavx512fp16}</code>, > + all operations will be emulated by software emulation and the > + <code>float</code> instructions. > + </li> > +</ul>
LGTM. Thanks. > > > > > + emulated by software emulation and the <code>float</code> > > > instructions. > > > + </li> > > > > > > > > + emulated by software emulation and the <code>float</code> > > > > > instructions. > > > > > + </li> > > > > > +</ul> > > > > > > > > > > <!-- <h3 id="mips">MIPS</h3> --> > > > > > > > > > > -- > > > > > 2.18.1 > > > > > > > > > > > > > > > > > -- > > > > H.J. > > > > > > > > > > > > -- > > > BR, > > > Hongtao > > > > > > > > -- > > H.J. > > > > -- > BR, > Hongtao -- H.J.