Wed Aug 25 13:41:47 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>

	* lists.c (unused_insn_list, unused_expr_list): New file for
	maintaining various types of lists. New statics for maintaining a
	cache of available INSN_LIST and EXPR_LIST nodes.
	(free_list): Static function for freeing a list of INSN/EXPR nodes.
	(alloc_INSN_LIST): Function to get a free INSN_LIST node.
	(alloc_EXPR_LIST): Function to get a free EXPR_LIST node.
	(init_EXPR_INSN_LIST_cache): Initialize the cache lists.
	(free_EXPR_LIST_list): Free an entire list of EXPR_LIST nodes.
	(free_INSN_LIST_list): Free an entire list of INSN_LIST nodes.
	(free_EXPR_LIST_node): Free an individual EXPR_LIST node.
	(free_INSN_LIST_node): Free an individual INSN_LIST node.
	* haifa-sched.c (unused_insn_list, unused_expr_list): Moved to flow.c
	(free_list, alloc_INSN_LIST, alloc_EXPR_LIST): Moved to flow.c
	(remove_dependence, free_pending_lists): Use new global routines.
	(flush_pending_lists, sched_analyze_insn): Use new global routines.
	(sched_analyze, compute_block_backward_dependences): Use new routines.
	(sched_analyze_1, sched_analyze_2): Use new routines.
	(schedule_insns): Use new global routines.
	* rtl.h (init_EXPR_INSN_LIST_cache, free_EXPR_LIST_list): Add function
	prototypes.
	(free_INSN_LIST_list, free_EXPR_LIST_node): Add prototypes.
	(free_INSN_LIST_node, alloc_INSN_LIST, alloc_EXPR_LIST): Add function
	prototypes.
	* toplev.c (rest_of_compilation): Initialize node cache.
	* Makefile.in (OBJS): Add lists.o to list of object files.
	(lists.o): Add dependancies.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@28864 138bc75d-0d04-0410-961f-82ee72b054a4

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