possible gcse failure: not able to eliminate redundant loads

[Richard Henderson]

On Mon, Dec 16, 2002 at 10:04:01PM +0100, Toon Moene wrote:
> BTW, I wasn't aware it's legal to dereference NULL C pointers.

It isn't, of course.  But that's the whole point.  You've
got code that says

	x = (condition ? *p : 0);

i.e. the dereference is protected by a conditional.  Thus
we can't hoist the dereference past the conditional (and
thence out of the loop that started this thread).


r~