[PR51570] minimize ENTRY_VALUEs in debug location lists

[Jakub Jelinek]

On Mon, Apr 09, 2012 at 02:50:02AM -0300, Alexandre Oliva wrote:
> for  gcc/ChangeLog
> from  Alexandre Oliva  <aoliva@redhat.com>
> 
> 	PR debug/51570
> 	* var-tracking.c (expand_depth): New type.
> 	(onepart_aux, expand_loc_callback_data): Change depth type to it.
> 	(loc_exp_dep_alloc): Adjust initializer.
> 	(update_depth): Use new type.  Add entryvals.
> 	(vt_expand_var_loc_chain): Take note of expansions with
> 	ENTRY_VALUEs, but don't accept them right away.  Run an optional
> 	second pass accepting the minimum ENTRY_VALUE count found in the
> 	first pass.
> 	(vt_expand_loc_callback, INIT_ELCD): Adjust.

Ok for trunk, thanks.

	Jakub