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Re: [VTA, PR41473] drop NULL locations from lists

From: Jason Merrill <jason at redhat dot com>
To: Alexandre Oliva <aoliva at redhat dot com>
Cc: Cary Coutant <ccoutant at google dot com>, Jakub Jelinek <jakub at redhat dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 11 Dec 2009 18:52:03 -0500
Subject: Re: [VTA, PR41473] drop NULL locations from lists
Newsgroups: gmane.comp.gcc.patches
References: <orljhxt302.fsf@livre.localdomain> <20091123204016.GG22813@hs20-bc2-1.build.redhat.com> <c17be2b30911231308n71894f1gc224a798aa8b2498@mail.gmail.com> <c17be2b30911231350y681e09c2we781248068455b8b@mail.gmail.com> <oreinor6i7.fsf@livre.localdomain>

On 11/23/2009 09:39 PM, Alexandre Oliva wrote:

	PR debug/41473
	* dwarf2out.c (add_var_loc_to_decl): Don't drop initial empty
	locations.
	(new_loc_list): Drop gensym arg.  Move generation of ll_symbol...
	(gen_llsym): ... here.  New function.
	(add_loc_descr_to_loc_list): Removed.
	(loc_descriptor): Infer mode from CONST_DOUBLEs and CONST_VECTORs.
	(single_element_loc_list): Removed.
	(dw_loc_list): Don't create entries without a location.  Don't
	special-case the first node of the list, only single nodes.
	(single_element_loc_list_p): Simplify.
	(loc_list_from_tree): Don't use DECL_RTL if loc_list is nonempty.
	(add_location_or_const_value_attribute): Test var loc for NULL.
	(convert_cfa_to_fb_loc_list): Adjust calls to new new_loc_list,
	call gen_llsym if needed.

OK.

	PR debug/41473
	* dwarf2out.c (AT_loc_list_ptr): New.
	(resolve_addr): Remove unresolved attributes and loc_list entries.

OK.

Jason

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