[Bug tree-optimization/23429] New: Operations involving unsigneds could be simplified
Andrew Pinski
pinskia@physics.uc.edu
Tue Aug 16 21:11:00 GMT 2005
>
> 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
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