gcc/gcc ChangeLog builtins.c function.h reload ...

[wilson@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	wilson@gcc.gnu.org	2005-08-19 21:16:21

Modified files:
	gcc            : ChangeLog builtins.c function.h reload1.c 
	gcc/doc        : tm.texi 

Log message:
	Fix uninitialized register read problem.
	* builtins.c (expand_builtin_return_addr): Set
	current_function_accesses_prior_frames when count != 0.  Use
	frame_pointer_rtx when count == 0.
	* function.h (struct function): Add accesses_prior_frames field.
	(current_function_accesses_prior_frames): Define.
	* reload1.c (init_elim_table): Check
	current_function_accesses_prior_frames.
	* doc/tm.texi (INITIAL_FRAME_ADDRESS_RTX): Update docs.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9785&r2=2.9786
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.471&r2=1.472
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/function.h.diff?cvsroot=gcc&r1=1.156&r2=1.157
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/reload1.c.diff?cvsroot=gcc&r1=1.478&r2=1.479
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/tm.texi.diff?cvsroot=gcc&r1=1.445&r2=1.446