gcc/gcc ChangeLog.tree-ssa domwalk.c domwalk.h ...

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2003-11-26 03:22:24

Modified files:
	gcc            : ChangeLog.tree-ssa domwalk.c domwalk.h 
	                 tree-ssa-dom.c tree-ssa.c 

Log message:
	* domwalk.c (walk_dominator_tree): Indicate to the block local
	data initializer if the block local data is new or recycled.
	* domwalk.h (struct dom_walk_data): Corresponding changes.
	* tree-ssa-dom.c (dom_opt_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(dom_opt_finalize_block): When threading across edges, if the
	true/false varrays have not been initialized, then the limit is zero.
	Only clear block local varrays that have been initialized.
	(record_equivalences_from_incoming_edge): If necessary, initialize
	block local const_and_copies.
	(dom_opt_walk_stmts): If necessary, initialize block local
	stmts_to_rescan.
	(record_var_is_nonzero): If necessary, initialize block local
	nonzero_vars.
	(record_cond_is_true): If necessary, initialize block local
	true_exprs.
	(record_cond_is_false): If necessary, initialize block local
	false_exprs.
	(lookup_avail_expr): If necessary, initialize block local
	avail_exprs.
	(record_range): If necessary, initialize block local vrp_varaibles.
	* tree-ssa.c
	* tree-ssa.c (rewrite_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(rewrite_finalize_block): Only clear block local varrays that have
	been initialized.
	(register_new_def): If necessary, initialize block local defs.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.929&r2=1.1.2.930
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/domwalk.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.4&r2=1.1.2.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/domwalk.h.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.3&r2=1.1.2.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dom.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.87&r2=1.1.2.88
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.164&r2=1.1.4.165