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This is somewhat old, but confirms what Shawn has to say.<BR>
<BR>
<A HREF="http://www.osnews.com/story/5830/GNU_GCC_versus_Suns_Compiler_in_the_SPARC_Platform">http://www.osnews.com/story/5830/GNU_GCC_versus_Suns_Compiler_in_the_SPARC_Platform</A><BR>
<A HREF="http://www.osnews.com/comments/5830">http://www.osnews.com/comments/5830</A><BR>
<BR>
ABI comp. in GCC comes at a cost. However few things like scheduler branch scheduler. works better with gcc.<BR>
<A HREF="http://gcc.gnu.org/onlinedocs/gcc/Compatibility.html">http://gcc.gnu.org/onlinedocs/gcc/Compatibility.html</A> . <BR>
<BR>
However performance issues can be resolved by using flags like -mcpu=v9 or -mcpu=v8 <BR>
whatever is applicable. <BR>
<A HREF="http://blogs.sun.com/alexey/category/Sun?page=1">http://blogs.sun.com/alexey/category/Sun?page=1</A><BR>
<BR>
There is a separate project called gcc4ss which targets at getting everything running and at the same time faster as well.<BR>
<A HREF="http://cooltools.sunsource.net/gcc/">http://cooltools.sunsource.net/gcc/</A><BR>
<BR>
See Alexey's latest blog :<BR>
<A HREF="http://blogs.sun.com/alexey/entry/gcc_vs_gccfss_vs_studio">http://blogs.sun.com/alexey/entry/gcc_vs_gccfss_vs_studio</A><BR>
<BR>
The gap is being bridged. and look at the compatiblity benefits as well <BR>
Kunal Deo<BR>
<BR>
<BR>
On Mon, 2008-05-12 at 15:49 -0500, Shawn Walker wrote:
<BLOCKQUOTE TYPE=CITE>
<PRE>
On Mon, May 12, 2008 at 3:39 PM, Mats Rojestal
<<A HREF="mailto:mats.rojestal@bredband.net">mats.rojestal@bredband.net</A>> wrote:
> I can't figure out what the advantage of using sun compilers is,
> maybe a death wish. My simple observations from gcc 4.x.x performance is
> that it's not inferior to other compilers.
> Solaris is not a major player in the OS market and making it harder to
> port software to Solaris isn't really a good idea.
It's simple. The GNU C++ complier produces binaries that are not ABI
compatible with Sun Studio compilers.
In addition, it produces code that is up to 50% slower on SPARC, and
often slower on x86.
</PRE>
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