From b2aec5c0ebe5c21cf62cc40f578ebc800ea02e7a Mon Sep 17 00:00:00 2001
From: Jan Hubicka <jh@suse.cz>
Date: Fri, 22 Jun 2001 19:18:23 +0200
Subject: regs.h (struct reg_info_def): Add freq field.

	* regs.h (struct reg_info_def): Add freq field.
	(REG_N_REFS): Update comment.
	(REG_FREQ): New.
	* regclass.c (scan_one_insn): Update REG_FREQ.
	* flow.c (mark_set_1): Update REG_FREQ, make REG_N_SETS unweighted.
	(attempt_auto_inc): Likewise.
	(mark_used_reg): Likewise.
	(try_pre_increment_1): Likewise.
	* local-alloc.c (struct qty): Add freq field.
	(alloc_qty): Set freq.
	(update_equiv_regs): Set REG_FREQ.
	(QTY_CMP_PRI): Use freq.
	(combine_regs): Update qty->freq.
	* global.c (struct allocno): Update comment for n_refs;
	add freq field.
	(local_reg_freq): New array.
	(global_alloc): Update freq field;
	allocate and initialize local_reg_freq.
	(allocno_compare): Use freq field.
	(find_reg): Likewise.
	* reload1.c (count_pseudo): Use freq isntead of n_refs.
	(count_spilled_pseudo): Likewise.

	* tm.texi (GCOV_TYPE_SIZE): Document.
	* basic-block.h (gcov_type): Define.
	(struct edge_def): Use gcov_type for count field.
	(struct basic_block_def): Likewise.
	* defaults.h (GCOV_TYPE_SIZE): Define.
	* final.c (end_final): Use GCOV_TYPE_SIZE.
	* flow.c (dump_edge_info, dump_flow_info, dump_bb): Print count fields
	using HOST_WIDEST_INT_PRINT_DEC.
	* gcov-io.h (__fetch_gcov_type, __store_gcov_type, __read_gcov_type,
	__write_gcov_type): New.
	(store_long): Remove.
	* gcov.c (gcov_type): Set default.
	(struct adj_list): Use gcov_type for arc_count.
	(bb_info): Use gcov_type for succ_count, pred_count and exec_count.
	(create_program_flow_graph): Read arc_count properly.
	(solve_program_flow_graph): 'total' is gcov_type.
	(output_data): Line_counts is gcov_type, print it properly.
	* libgcc2.c (struct bb): Counts is gcov_type.
	(__bb_exit_func): Use __read_gcov_type and __write_gcov_type.
	* profile.c (LONG_TYPE_SIZE, LONG_LONG_TYPE_SIZE): Set default.
	(GCOV_TYPE_SIZE): Define.
	(struct bb_info): succ_count and pred_count is gcov_type.
	(compute_branch_probabilities): Use __read_gcov_type,
	print read edges to the dump file.
	(total): Is gcov_type.
	(gen_edge_profiler): Use GCOV_TYPE_SIZE.

From-SVN: r43505
---
 gcc/regs.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'gcc/regs.h')

diff --git a/gcc/regs.h b/gcc/regs.h
index 61b9a49..3857c82 100644
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -67,6 +67,7 @@ typedef struct reg_info_def
 
 				/* fields set by flow_analysis */
   int refs;			/* # of times (REG n) is used or set */
+  int freq;			/* # estimated frequency (REG n) is used or set */
   int deaths;			/* # of times (REG n) dies */
   int live_length;		/* # of instructions (REG n) is live */
   int calls_crossed;		/* # of calls (REG n) is live across */
@@ -77,11 +78,14 @@ typedef struct reg_info_def
 
 extern varray_type reg_n_info;
 
-/* Indexed by n, gives number of times (REG n) is used or set.
-   References within loops may be counted more times.  */
+/* Indexed by n, gives number of times (REG n) is used or set.  */
 
 #define REG_N_REFS(N) (VARRAY_REG (reg_n_info, N)->refs)
 
+/* Estimate frequency of references to register N.  */
+
+#define REG_FREQ(N) (VARRAY_REG (reg_n_info, N)->freq)
+
 /* Indexed by n, gives number of times (REG n) is set.
    ??? both regscan and flow allocate space for this.  We should settle
    on just copy.  */
-- 
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