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Re: std::pow implementation

From: Joe Buck <jbuck at synopsys dot com>
To: Richard dot Earnshaw at arm dot com
Cc: Gabriel Dos Reis <gdr at integrable-solutions dot net>, Alexandre Oliva <aoliva at redhat dot com>, Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>, gcc at gcc dot gnu dot org
Date: Wed, 30 Jul 2003 10:01:58 -0700
Subject: Re: std::pow implementation
References: <m3r848cyqc.fsf@uniton.integrable-solutions.net> <200307301037.h6UAb3P18424@pc960.cambridge.arm.com>

On Wed, Jul 30, 2003 at 11:37:03AM +0100, Richard Earnshaw wrote:
> This is talking specifically about *very small* functions ("one or two 
> assignments").  It says nothing about what happens if the programmer 
> decides to put a 2000 line monstrosity in the middle of a class definition 
> (which would be legal, if somewhat stupid).

The answer is to do what the programmer says, if possible.  It may well
turn out that the programmer is not as stupid as you think, because
constant propagation winds up throwing away 1980 of those lines and the
call is in an inner loop.  And if the programmer really is stupid, he or
she will learn something.

References:
- Re: std::pow implementation
  - From: Gabriel Dos Reis
- Re: std::pow implementation
  - From: Richard Earnshaw

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