[Bug debug/21946] [4.0 Regression] Invalid DWARF2 debug info emitted

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-07-09 08:44 -------
Subject: Bug 21946

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	jakub@gcc.gnu.org	2005-07-09 08:44:27

Modified files:
	gcc            : ChangeLog Makefile.in dwarf2out.c 
	                 var-tracking.c 

Log message:
	Backport from the mainline:
	2005-06-08  Eric Botcazou  <ebotcazou@libertysurf.fr>
	PR debug/21946
	* dwarf2out.c (add_loc_descr_op_piece): Move to the
	DWARF2_DEBUGGING_INFO section.
	
	2005-06-07  Jakub Jelinek  <jakub@redhat.com>
	PR debug/21946
	* dwarf2out.c (add_loc_descr_op_piece): New function.
	(multiple_reg_loc_descriptor, concat_loc_descriptor,
	loc_descriptor): Use it.
	* var-tracking.c: Include regs.h and expr.h.
	(emit_note_insn_var_location): Skip over pieces where offset
	is smaller than previous offset plus previous piece mode size.
	Optimize adjacent hard registers or memory locations.
	* Makefile.in (var-tracking.o): Depend on $(REGS_H) and $(EXPR_H).

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.306&r2=2.7592.2.307
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/Makefile.in.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.1447.2.1&r2=1.1447.2.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/dwarf2out.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.570.2.8&r2=1.570.2.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/var-tracking.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.26&r2=2.26.10.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21946