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Re: [wwwdocs] Document GCC 4.6 Solaris 2 changes
Gerald Pfeifer <gerald@pfeifer.com> writes:
> On Wed, 26 Jan 2011, Rainer Orth wrote:
>> Index: htdocs/gcc-4.6/changes.html
>> ===================================================================
>> +<h3 id="solaris">Solaris 2</h3>
>> + <ul>
>> + <h4>New Features</h4>
>
> I believe this is the only port which used <h4> to differentiate
> between features and other changes. It's fine if you really want
> to handle it that way, just wanted to point it out. An alternative
> would be to say "<em>ABI Changes:</em> ....2
I've tried that, but still think that using <h4> is clearer, especially
since the ABI change (as always) is important enough to get special
emphasis.
>> + <li>Support symbol versioning with Sun linker.</li>
>
> "the Sun linker"?
Right: I've fixed that throughout.
>> + <li>Enable full ISO C99 support for C++ on Solaris 10+.</li>
>
> ISO C99 for C++?
libstdc++ can make use of C99 features in libc, but that needs special
enabling.
>> + <li>Support TLS with Sun as on Solaris 2/x86.</li>
>
> Perhaps say "the Sun assembler"? At first I was wondering about the
> grammar of this sentence reading the as as the English word as. ;-)
Agreed.
>> + <h4>ABI Changes</h4>
>> + <li>Change ABI for returning 8-byte vectors in MMX registers on Solaris
>> + 10+/x86 to match Sun Studio 12.1+ compilers.</li>
>
> "Change the ABI..."
>
> What happens with code (libraries,...) compiled with an earlier version of
> GCC? Will this break? If so, a word of caution may be appropirate.
Indeed: I've considerably expanded the section.
> Looks good overall. Please consider my comments and repost/check in
Here's the version I've checked in.
Thanks for your careful comments.
Rainer
Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.98
diff -u -p -r1.98 changes.html
--- changes.html 28 Jan 2011 12:39:59 -0000 1.98
+++ changes.html 28 Jan 2011 16:12:59 -0000
@@ -804,6 +804,32 @@ supported on several Xilinx Spartan and
At the moment, Android support is enabled only for ARM.</li>
</ul>
+<h3 id="solaris">Solaris 2</h3>
+ <ul>
+ <h4>New Features</h4>
+ <li>Support symbol versioning with the Sun linker.</li>
+ <li>Enable full ISO C99 support for C++ on Solaris 10+.</li>
+ <li>Support thread-local storage (TLS) with the Sun assembler on
+ Solaris 2/x86.</li>
+ <li>Support TLS on Solaris 8/9 if prerequisites are met.</li>
+ <li>Support COMDAT group with the GNU assembler and recent Sun
+ linker.</li>
+ <li>Support the Sun assembler visibility syntax.</li>
+ <li>Default Solaris 2/x86 to <code>-march=pentium4</code> (Solaris
+ 10+) resp. <code>-march=pentiumpro</code> (Solaris 8/9).</li>
+ <li>Don't use SSE on Solaris 8/9 x86 by default.</li>
+ <li>Enable 128-bit long double (<code>__float128</code>) support on
+ Solaris 2/x86.</li>
+ <h4>ABI Change</h4>
+ <li>Change the ABI for returning 8-byte vectors like
+ <code>__m64</code> in MMX registers on Solaris 10+/x86 to match the
+ Sun Studio 12.1+ compilers. <em>This is an incompatible change.
+ If you use such types, you must either recompile all your code with
+ the new compiler or use the new <code>-mvect8-ret-in-mem</code>
+ option to remain compatible with previous versions of GCC and
+ Sun Studio.</em></li>
+ </ul>
+
<h3 id="windows">Windows x86/x86_64</h3>
<ul>
<li>Initial support for decimal floating point.</li>
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Rainer Orth, Center for Biotechnology, Bielefeld University