GCC viciously beaten by ICC in trig test!

[Scott Robert Ladd]

Gabriel Dos Reis wrote:
> Did you try by declaring doit() inline?
> (I suppose that won't change much the outcome, but I'm curious).

I can get it to be inlined, but that doesn't do much for the performance.

This all came up because someone recompiled a program (with ICC) I'd 
written some years ago for a client -- and they noticed that the ICC 
version was 3 times faster than the GCC version. I get the same results.

I also note that on my current benchmark suites, GCC 3.3.3 performs as 
well or better than ICC on all tests (in terms of generated code speed) 
  -- EXCEPT the ones involving trigonometry.

Which is why I was wondering if I'd missed a magic word.

I'll check this out on Sparc and AMD64 in a day or so, to see if it's 
just a problem with the Pentium 4.

-- 
Scott Robert Ladd
Coyote Gulch Productions (http://www.coyotegulch.com)
Software Invention for High-Performance Computing