[Bug target/29818] code with SSE segfaults with gcc-3.4.6, runs fine with gcc-4.1.1

["sergstesh at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #13 from sergstesh at yahoo dot com  2006-11-17 02:23 -------
(In reply to comment #11)
> I'm only a bug master and don't do any work on the compiler anyway, so my
> say isn't worth much, but here's my take:
> 
> You propose that you can give us 15,000 lines of obfuscated code through which
> we will have to dig ourselves to find out what is causing the slowdown, and
> then fix the problem. At the same time you sit at the sidelines and wait for
> us to work on the code that you have purposefully made hard to read.
> 
> What you apparently don't understand is that many of us work on gcc in our
> spare time. If you want us to do something for you, you will have to help us
> some. That might include trying to find out which part of the code slowed 
> down, or to make the code significantly slower. Typically, the bug reports
> that come with the smallest testcases receive the most attention.
> 
> You just have to realize that you don't pay us to do the crappy work of 
> taking apart an obfuscated code. Since nobody pays us to work on random
> bug reports, we typically pick the ones that are the most interesting or
> that are the easiest to tackle since they come with a short testcase. We
> do have an interest in making gcc better, but we reserve the right to
> decide which parts of the compiler to make better, unless you pay someone
> to do some specific piece of work.
> 
> 
> > I am simply saying I do not want to spend my time changing the code to be able
> > to publish it if you are not going to deal with the performance issue anyway.
> 
> We may. You can increase your chances by helping us.
> 
> W.
> 


I opened another bug report, and mentioned it above, specifically devoted
to the performance issue:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29874
.

The example is based on FFTW, which is GPL - not a line of my code.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29818