Re: How to create a "finish" function for a tree opt pass

[Diego Novillo <dnovillo at google dot com>]

On 2/29/08 3:15 PM, Haifeng He wrote:

> What I did currently was to add my dump routine in
> toplev.c:compile_file, after finish_aliases_2
> and coverage_finish. I thought it might be nice if there is already
> some kind of method defined in the
> tree_opt_pass so that user can use to do similar finish-up work.

If you are writing an intra-procedural pass, this is not possible.  Your 
code will be executed once per function in the callgraph.

You can accomplish this if you are implementing an inter-procedural 
pass.  See for instance, pass_ipa_cp.

We don't have finalizer hooks for executing after all the functions have 
been optimized.  You'd have to put your code in cgraph_optimize, maybe. 
Though where you put it now may be just as good.  Though, I think I'd 
rather see what you're trying to do first.  Maybe your pass should be an 
IPA pass.

Diego.