------- Additional Comments From rakdver at atrey dot karlin dot mff dot cuni dot cz 2005-05-22 21:50 ------- Subject: Re: missed optimization due with const function and pulling out of loops
> const is different from pure, const cannot read from memory. this is something that have been discussed many times; some people like the definition with "behaves like if" (that enables you for example to cache or precompute the results of the function) more, and it is used in several existing programs. Anyway, the argument that the function may be costly is valid regardless of whether you want to strictly enforce the no memory access constraint, or whether you use the more useful definition. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21712
