2008-04-24 Richard Sandiford <rsandifo@nildram.co.uk>

	    Kenneth Zadeck <zadeck@naturalbridge.com>

	* dbgcnt.def (ra_byte_scan): Added.
	* dbgcnt.c (dbg_cnt): Added code to print message to dump_file
	when the last hit happens for a counter.  
	* timevar.def (TV_DF_BYTE_LR): New variable.
	* tree-pass.h (pass_fast_rtl_byte_dce): New pass.
	* passes.c (pass_fast_rtl_byte_dce): New pass.
	* fwprop.c (update_df): Added mode to call df_ref_create.
	Renamed DF_REF_WIDTH and DF_REF_OFFSET to DF_REF_EXTRACT_WIDTH and
	DF_REF_EXTRACT_OFFSET.
	* df.h (DF_BYTE_LR, DF_BYTE_LR_BB_INFO, DF_BYTE_LR_IN, 
	DF_BYTE_LR_OUT, df_byte_lr): New macro.
	(df_mm): New enum.
	(df_ref_extract): Added mode field.
	(DF_REF_WIDTH, DF_REF_OFFSET) Renamed to DF_REF_EXTRACT_WIDTH and
	DF_REF_EXTRACT_OFFSET.
	(DF_REF_EXTRACT_MODE): New macro.
	(df_byte_lr_bb_info): New structure.
	(df_print_byte_regset, df_compute_accessed_bytes, 
	df_byte_lr_add_problem, df_byte_lr_get_regno_start,
	df_byte_lr_get_regno_len, df_byte_lr_simulate_defs,
	df_byte_lr_simulate_uses,
	df_byte_lr_simulate_artificial_refs_at_top,
	df_byte_lr_simulate_artificial_refs_at_end,
	df_compute_accessed_bytes): New function.
	(df_ref_create): Add parameter.
	(df_byte_lr_get_bb_info): New inline function.
	* df-scan.c (df_ref_record, df_uses_record,
	df_ref_create_structure): Added mode parameter.
	(df_ref_create, df_notes_rescan, df_ref_record, df_def_record_1, 
	df_defs_record, df_uses_record, df_get_conditional_uses,
	df_get_call_refs, df_insn_refs_collect, df_bb_refs_collect, 
	df_entry_block_defs_collect, df_exit_block_uses_collect):
	Added mode parameter to calls to df_ref_record, df_uses_record,
	df_ref_create_structure.
       	(df_ref_equal_p, df_ref_compare): Added test for modes.
	(df_ref_create_structure): Added code to set mode.  Renamed
	DF_REF_WIDTH and DF_REF_OFFSET to DF_REF_EXTRACT_WIDTH and
	DF_REF_EXTRACT_OFFSET.
	* df-core.c (df_print_byte_regset): New function.
	* df-byte-scan.c: New file.
	* df-problems.c (df_rd_transfer_function): Removed unnecessary
	calls to BITMAP_FREE.  
	(df_byte_lr_problem_data, df_problem problem_BYTE_LR): New structure.
	(df_byte_lr_get_regno_start, df_byte_lr_get_regno_len,
	df_byte_lr_set_bb_info, df_byte_lr_free_bb_info, 
	df_byte_lr_check_regs, df_byte_lr_expand_bitmap, 
	df_byte_lr_alloc, df_byte_lr_reset, df_byte_lr_bb_local_compute,
	df_byte_lr_local_compute, df_byte_lr_init,
	df_byte_lr_confluence_0, df_byte_lr_confluence_n, 
	df_byte_lr_transfer_function, df_byte_lr_free, 
	df_byte_lr_top_dump, df_byte_lr_bottom_dump,
	df_byte_lr_add_problem, df_byte_lr_simulate_defs, 
	df_byte_lr_simulate_uses,
	df_byte_lr_simulate_artificial_refs_at_top,
	df_byte_lr_simulate_artificial_refs_at_end): New function.
	* dce.c (byte_dce_process_block): New function.
	(dce_process_block): au is now passed in rather than computed
	locally.  Changed loops that look at artificial defs to not look
	for conditional or partial ones, because there never are any.  
	(fast_dce): Now is able to drive byte_dce_process_block or 
	dce_process_block depending on the kind of dce being done.
	(rest_of_handle_fast_dce): Add parameter to fast_dce.
	(rest_of_handle_fast_byte_dce): New function.
	(rtl_opt_pass pass_fast_rtl_byte_dce): New pass.
	* Makefile.in (df-byte-scan.o, debugcnt.o): Added dependencies.





git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134523 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 1 deletions

diff --git a/gcc/dbgcnt.c b/gcc/dbgcnt.c
index 8ab5fd0ea52..47ba28a9648 100644
--- a/gcc/dbgcnt.c
+++ b/gcc/dbgcnt.c
@@ -23,6 +23,9 @@ See dbgcnt.def for usage information.  */
 #include "system.h"
 #include "coretypes.h"
 #include "errors.h"
+#include "tm.h"
+#include "rtl.h"
+#include "output.h"
 
 #include "dbgcnt.h"
 
@@ -58,6 +61,10 @@ bool
 dbg_cnt (enum debug_counter index)
 {
   count[index]++;
+  if (dump_file && count[index] == limit[index])
+    fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n", 
+	     map[index].name);
+
   return dbg_cnt_is_enabled (index);
 }
 
@@ -132,7 +139,8 @@ dbg_cnt_process_opt (const char *arg)
 
 /* Print name, limit and count of all counters.   */
 
-void dbg_cnt_list_all_counters (void)
+void 
+dbg_cnt_list_all_counters (void)
 {
   int i;
   printf ("  %-30s %-5s %-5s\n", "counter name",  "limit", "value");