gcc/gcc ChangeLog.tree-ssa tree-ssa-dom.c

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2004-04-12 20:04:15

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

Log message:
	* tree-ssa-dom.c (true_exprs, false_exprs): Kill.
	(struct expr_hash_elt): New structure for the expression hash table.
	(struct dom_walk_block_data): Kill block local true_exprs and
	false_exprs.
	(get_eq_expr_value): One less local varray argument.  Fix prototype.
	Use record_cond rather than record_cond_is_{true,false}.
	(true_false_expr_hash, true_false_expr_eq): Kill.
	(record_cond_is_true, record_cond_is_false): Collapse into ...
	(record_cond): New function.
	(tree_ssa_dominator_optimize): Kill references to true_exprs and
	false_exprs.  Use "free" as the free function for the avail_exprs
	hash table.
	(dom_opt_initialize_block_local_data): No longer initialize
	block local true/false expressions.
	(initialize_hash_element): New function.
	(remove_local_expressions_from_table): Use initialize_hash_element.
	(update_rhs_and_lookup_avail_expr): Similarly.
	(dom_opt_finalize_block): Record true/false expressions into the
	main avail_expr hash table.  Unwind main hash table appropriately.
	Use record_cond rather than record_cond_is_{true,false}.
	(record_equivalences_from_incoming_edge): Pass block local avail_exprs
	varray instead of block local true/false varrays to get_eq_expr_value.
	(dump_dominator_optimization_stats): Update to reflect that the
	true/false expression hash tables are gone.
	(lookup_avail_expr): Simplify slightly now that we only have one
	expression hash table.
	(avail_expr_hash, avail_expr_eq): Generalize slightly to handle new
	hash table entry structure and having true/false expression information
	in the available expression hash table.

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=1.1.2.1321&r2=1.1.2.1322
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=1.1.2.152&r2=1.1.2.153