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Re: GCC beaten by ICC in stupid trig test!

From: Paolo Carlini <pcarlini at suse dot de>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: Scott Robert Ladd <coyote at coyotegulch dot com>, gcc at gcc dot gnu dot org
Date: Mon, 15 Mar 2004 01:32:39 +0100
Subject: Re: GCC beaten by ICC in stupid trig test!
References: <4054ED19.8020009@coyotegulch.com> <64F82240-7615-11D8-8086-000393A6D2F2@physics.uc.edu>

Andrew Pinski wrote:

Here is a much better benchmark to try, notice that we are doing more work now but the point is that ICC is going to be the transformation and it not going to see that doit is constant so it will not pull it out of the loop and it cannot unroll the loop into just being a constant.


Ah! Thanks Andrew for the explanation. Now some recent developments
are much more clear to me!

Indeed, your modified testcase runs slower everywhere... ;)

Paolo.

References:
- GCC viciously beaten by ICC in trig test!
  - From: Scott Robert Ladd
- Re: GCC beaten by ICC in stupid trig test!
  - From: Andrew Pinski

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