flow.c (XNMALLOC): New macro.

	* flow.c (XNMALLOC): New macro.
	(flow_int_list_blocks, basic_block_succ, basic_block_pred): New
	static variables.
	(add_edge, add_edge_to_label): New static functions.
	(free_bb_memory): New function.
	(flow_delete_insn): Delete function.
	(basic_block_drops_in): Delete variable.
	(find_basic_blocks): Allocate and initialize basic_block_head,
	basic_block_succ.  Don't allocate basic_block_drops_in.
	Call free_bb_memory at the beginning.
	(find_basic_blocks_1): Don't do multiple passes.
	Delete code to compute basic_block_drops_in.
	After calling make_edges, mark blocks reached by current block live.
	Update test for unreachable live blocks.
	(mark_label_ref): Delete args X, CHECKDUP.  Add PRED arg.  All callers
	changed.
	Simplify to call add_edge_to_label when a LABEL_REF is found.
	(make_edges): Simplify to call add_edge_to_label instead of
	mark_label_ref most of the time.
	Compute here whether control drops into the next block.
	(delete_unreachable_blocks): Return void.  All callers changed.
	Delete unreachable blocks in reverse order.
	After deleting all unreachable blocks, renumber the remaining ones
	and update n_basic_blocks.
	(delete_block): Speed up deletion a bit.
	Don't set basic_block_drops_in for deleted blocks.
	(free_basic_block_vars): Don't free basic_block_drops_in.
	(life_analysis_1): Update to use new edge representation.
	(dump_flow_info): Delete code to print basic block info; call
	dump_bb_data instead.
	(compute_preds_succs): Delete code to recompute basic_block_drops_in
	and uid_block_number.
	Simply copy the previously computed cfg.
	(dump_bb_data): New arg LIVE_INFO.  All callers changed.
	Print register lifetime information if LIVE_INFO is nonzero.
	* basic-block.h (dump_bb_data): Adjust prototype.
	* gcse.c (gcse_main): Update call to dump_bb_data.
	* rtl.h (free_bb_memory): Declare.
	* toplev.c (rest_of_compilation): Call free_bb_memory.

From-SVN: r23443

gcc/ChangeLog

 Thu Oct 29 23:55:43 1998  Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>
 
+	* flow.c (XNMALLOC): New macro.
+	(flow_int_list_blocks, basic_block_succ, basic_block_pred): New
+	static variables.
+	(add_edge, add_edge_to_label): New static functions.
+	(free_bb_memory): New function.
+	(flow_delete_insn): Delete function.
+	(basic_block_drops_in): Delete variable.
+	(find_basic_blocks): Allocate and initialize basic_block_head,
+	basic_block_succ.  Don't allocate basic_block_drops_in.
+	Call free_bb_memory at the beginning.
+	(find_basic_blocks_1): Don't do multiple passes.
+	Delete code to compute basic_block_drops_in.
+	After calling make_edges, mark blocks reached by current block live.
+	Update test for unreachable live blocks.
+	(mark_label_ref): Delete args X, CHECKDUP.  Add PRED arg.  All callers
+	changed.
+	Simplify to call add_edge_to_label when a LABEL_REF is found.
+	(make_edges): Simplify to call add_edge_to_label instead of
+	mark_label_ref most of the time.
+	Compute here whether control drops into the next block.
+	(delete_unreachable_blocks): Return void.  All callers changed.
+	Delete unreachable blocks in reverse order.
+	After deleting all unreachable blocks, renumber the remaining ones
+	and update n_basic_blocks.
+	(delete_block): Speed up deletion a bit.
+	Don't set basic_block_drops_in for deleted blocks.
+	(free_basic_block_vars): Don't free basic_block_drops_in.
+	(life_analysis_1): Update to use new edge representation.
+	(dump_flow_info): Delete code to print basic block info; call
+	dump_bb_data instead.
+	(compute_preds_succs): Delete code to recompute basic_block_drops_in
+	and uid_block_number.
+	Simply copy the previously computed cfg.
+	(dump_bb_data): New arg LIVE_INFO.  All callers changed.
+	Print register lifetime information if LIVE_INFO is nonzero.
+	* basic-block.h (dump_bb_data): Adjust prototype.
+	* gcse.c (gcse_main): Update call to dump_bb_data.
+	* rtl.h (free_bb_memory): Declare.
+	* toplev.c (rest_of_compilation): Call free_bb_memory.
+
 	* reload1.c (struct elim_table): Delete MAX_OFFSET member.
 	(update_eliminable_offsets): Don't compute it.
 	(set_initial_elim_offsets): Don't initialize it.

gcc/basic-block.h

@@ -190,7 +190,8 @@ extern int *uid_block_number;
 
 extern void compute_preds_succs PROTO ((int_list_ptr *, int_list_ptr *,
 				        int *, int *));
-extern void dump_bb_data       PROTO ((FILE *, int_list_ptr *, int_list_ptr *));
+extern void dump_bb_data       PROTO ((FILE *, int_list_ptr *, int_list_ptr *,
+				       int));
 extern void free_bb_mem        PROTO ((void));
 extern void free_basic_block_vars	PROTO ((int));
 

gcc/gcse.c

@@ -700,9 +700,7 @@ gcse_main (f, file)
   compute_preds_succs (s_preds, s_succs, num_preds, num_succs);
 
   if (file)
-    {
-      dump_bb_data (file, s_preds, s_succs);
-    }
+    dump_bb_data (file, s_preds, s_succs, 0);
 
   /* Record where pseudo-registers are set.
      This data is kept accurate during each pass.

gcc/rtl.h

@@ -1374,6 +1374,7 @@ extern void recompute_reg_usage		PROTO ((rtx));
 #ifdef BUFSIZ
 extern void dump_flow_info		PROTO ((FILE *));
 #endif
+extern void free_bb_memory		PROTO ((void));
 
 /* In expmed.c */
 extern void init_expmed			PROTO ((void));

gcc/toplev.c

@@ -3951,6 +3951,8 @@ rest_of_compilation (decl)
 
  exit_rest_of_compilation:
 
+  free_bb_memory ();
+
   /* In case the function was not output,
      don't leave any temporary anonymous types
      queued up for sdb output.  */