On Thu, Mar 15, 2012 at 5:09 PM, Bernd Schmidt <ber...@codesourcery.com> wrote:
> On 03/16/2012 12:44 AM, Jakub Jelinek wrote:
>> For pointer arithmetics in the IL we assume the C
>> requirements, pointer arithmetics can be performed only within the same
>> object, so for
>> int a;
>> both of the following are invalid, even in the IL:
>> int *p = a - 1;
>> int *q = a + 11;
> Ok, so what's the solution? Add a second POINTER_PLUS_EXPR code with
> defined overflow behaviour, or add a flag to it?
We should have one for PLUS_EXPR also. There was some movement on
that on a branch that Richard Guenther did but I don't know if he is
going to work on it further. I have been noticing more and more the
need for this feature while working on my tree combiner branch, that I
might try to see if Richard's branch can be revisited.