Dirac, GCC-4.0.0 and SIMD optimisations on x86 architecture

[James E Wilson]

Anuradha Suraparaju wrote:
> My question is how do I report this as a bug? What information do I
> need to provide in the bug report? Did anybody else face similar
> problems with GCC-4.0.0 and MMX-enabled programs.

See
     http://gcc.gnu.org/bugs.html
for info on reporting bugs.

If you can narrow this down to a small testcase, then you are more 
likely to get a solution from us.  If you want us compile the entire 
Dirac project and take a look, we probably won't bother.

There have been changes to the MMX support in gcc, but without specific 
details about your testcase, it is hard to say anything definite.  For 
instance, we don't know what the Dirac --enable-mmx option does.  Which 
specific gcc options does it enable?

What about SSE?  The SSE support is generally preferred over the older 
MMX support.  Does Dirac make any use of this?  If not, perhaps it should.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com