[PATCH, PR 43141] Create ABSTRACT_ORIGIN for decls changed by IPA-SRA

[Martin Jambor]

Hi,

On Mon, Mar 15, 2010 at 05:02:54AM -0800, H.J. Lu wrote:
> On Thu, Mar 11, 2010 at 3:01 PM, Martin Jambor <mjambor@suse.cz> wrote:
> > the patch below (a bit simpler than the one attached in bugzilla)
> > fixes PR 43141 by building an ABSTRACT_ORIGIN decl for it.  This does
> > lead to emitting deleted parameters in debug info and is easier than
> > creating a decl for the function that we actually use and update all
> > calls.  Obviously it is a bit of a hack, but I hope it is an
> > acceptable one.
> >


> It should be "tree-optimization".
> 
> >        * tree-sra.c (create_abstract_origin): New function.
> >        (modify_function): Call create_abstract_origin.
> >
> 
> Is that possible to add a testcase to gcc.dg/guality?
> 

Can I add a guality test just to check for a presence of a declaration
- even if we cannot determine its value?  All the guality tests I
found verified that gdb reports that a variable has an expected value
but no information about the value of the removed unused parameter
(which can be anything) is stored in the debug info.

Thanks,

Martin