[LLVMdev] Analysis Passes

[Devang Patel]

This seems like a separate issue.

On Jul 26, 2008, at 5:56 PM, Gordon Henriksen wrote:

> I had a similar problem with the GC metadata information. Ultimately,
> I had to structure it as an ImmutablePass (with an explicit pass to
> free the contained information) because it would be invalidated by
> other passes at random.

If GC metadata information is not explicitly listed as preserved and  
the GC metadata pass is not ImmutablePass the, of course, the pass  
manager will consider the info not available (or dirty) as soon as the  
pass manager schedules a pass that does not explicitly preserve GC  
metadata. What else pass manager could do here ?

-
Devang