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

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	law@gcc.gnu.org	2004-09-16 19:06:13

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

Log message:
	* tree-into-ssa.c (block_defs_stack): New toplevel varray.
	(rewrite_block_data): Remove, no longer used.
	(rewrite_initialize_block_local_data): Remove, no longer used.
	(rewrite_initialize_block): Mark parameters as unused as needed.
	Change references to the block local block_defs to be block_defs_stack.
	Push a marker onto the block_defs_stack.
	(ssa_rewrite_initialize_block): Similarly.
	(rewrite_stmt, ssa_rewrite_stmt): Similarly.
	(ssa_register_new_def): No longer needs varray argument.  Use
	block_defs_stack instead.  No longer handle possibly null block_defs
	varray.  Reverse order of items we push on the stack to make it
	easier to identify our marker.
	(register_new_def): No longer handle possibly null block_defs
	varray.
	(rewrite_finalize_block): Revamp to look for markers in the global
	block_defs_stack varray rather than wiping a block local varray.
	Mark arguments as unused as needed.
	(ssa_rewrite_finalize_block): Similarly.
	(rewrite_into_ssa): Update initialization of dom walker structure
	to reflect that we don't need block local data anymore.  Initialize
	the block_defs_stack varray.
	(rewrite_ssa_into_ssa): Similarly.
	* tree-ssa-dom.c (block_defs_stack): New toplevel varray.
	(struct dom_walk_data): Kill block_defs field.
	(tree_ssa_dominator_optimize): Initialize block_defs_stack.
	(thread_across_edge): Use the global block_defs_stack instead of
	the old block_defs varray.
	(dom_opt_initialize_block_local_data): Update now that we don't have
	block_defs field to check anymore.
	(dom_opt_initialize_block): Push a marker onto block_defs_stack.
	(restore_currdefs_to_original_value): Use the new block_defs_stack
	instead of a block local varray.
	(dom_opt_finalize_block): Similarly.
	(record_equivalencs_from_phis): Similarly.
	(optimize_stmt, register_definitions_for_stmt): Similarly.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5481&r2=2.5482
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dom.c.diff?cvsroot=gcc&r1=2.41&r2=2.42
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-into-ssa.c.diff?cvsroot=gcc&r1=2.19&r2=2.20