merge_pointed_to_info

[Diego Novillo]

On Wed, 2004-11-03 at 04:33, Nathan Sidwell wrote:

>    dest_pi = get_ptr_info (dest);
>    orig_pi = SSA_NAME_PTR_INFO (orig);
> 
> At this point is it an error for dest_pi == orig_pi ? The later code
> looks like it will break if they are.
> 
Yes, and it should only happen if dest == orig.  Is that the case?

> However, the attached file contains such an instance, when compiled for
> i686-pc-linux-gnu at -O2.  My suspicion was aroused when bitmap_ior_into
> was called with the same bitmap.
> 
Do we ICE or generate bad code?  I'll take a look.


Thanks.  Diego.