------- Additional Comments From pinskia at physics dot uc dot edu 2005-08-16
21:10 -------
Subject: Re: New: Operations involving unsigneds could be simplified
>
> This could just return 1.
>
> $ cat unsigned-arith.c
> int foo(unsigned int *a, unsigned int *b, unsigned int *c)
> {
> unsigned int s1, s2;
>
> s1 = *a + *b;
> s2 = *c + *b;
>
> return s1 + *c == s2 + *a;
> }
The issue here is the reassociater needs to be a fully reassociater
and that has a couple of different bugs about this filed already.
-- Pinski
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23429
