emit-rtl.c (remove_unncessary_notes): Remove notes for empty blocks.

	* emit-rtl.c (remove_unncessary_notes): Remove notes for empty
	blocks.
	* final.c (next_block_index): Remove.
	(max_block_depth): Likewise.
	(pending_blocks): Likewise.
	(init_final): Don't initialize them.
	(final_start_function): Don't set next_block_index.  Set up
	BLOCK_NUMBER.
	(final_scan_insn): Use BLOCK_NUMBER, not next_block_index.
	* function.h (number_blocks): New function.
	* function.c (get_block_vector): New function.
	(identify_blocks): Use it.
	(reorder_blocks): Set NOTE_BLOCK.
	(number_blocks): New function.
	* tree.def (BLOCK): Add documentation for TREE_ASM_WRITTEN flag.
	* tree.h (BLOCK_NUMBER): New macro.
	(tree_block): Add block_num field.
	* dbxout.c (next_block_number): Remove.
	(dbxout_init): Don't set it.
	(dbxout_block): Only output blocks that have TREE_ASM_WRITTEN
	set.  Use BLOCK_NUMBER, rather than next_block_num, to determine
	block numbers.
	* toplev.c (rest_of_compilation): Always call
	find_loop_tree_blocks.  Fix indentation.
	* dwarf2out.c (next_block_number): Remove.
	(gen_lexical_block_die): Use BLOCK_NUMBER, not next_block_number,
	to determine block numbers.
	(gen_inlined_subroutine_die): Likewise.
	(gen_block_die): Only output blocks that have TREE_ASM_WRITTEN set.
	(decls_for_scope): Don't increment next_block_number.
	* dwarfout.c (next_block_number): Remove.
	(output_lexical_block_die): Use BLOCK_NUMBER, not next_block_number,
	to determine block numbers.
	(output_inlined_subroutine_die): Likewise.
	(output_block): Only output blocks that have TREE_ASM_WRITTEN set.
	(output_decls_for_scope): Don't increment next_block_number.
	* sdbout.c (next_block_number): Remove.
	(sdbout_block): Use BLOCK_NUMBER.
	(sdbout_begin_block): Simplify.
	* xcoffout.c (next_block_number): Remove.
	(xcoffout_block): Use BLOCK_NUMBER, not next_block_number.
	(xcoffout_begin_block): Don't set next_block_number.
	(xcoffout_begin_function): Likewise. Use BLOCK_NUMBER, not
	next_block_number.

From-SVN: r32228

1 files changed, 3 insertions, 10 deletions

diff --git a/gcc/xcoffout.c b/gcc/xcoffout.c
index eec7786..2857af4 100644
--- a/gcc/xcoffout.c
+++ b/gcc/xcoffout.c
@@ -375,15 +375,12 @@ xcoffout_source_line (file, filename, note)
 }
 
 /* Output the symbols defined in block number DO_BLOCK.
-   Set NEXT_BLOCK_NUMBER to 0 before calling.
 
    This function works by walking the tree structure of blocks,
    counting blocks until it finds the desired block.  */
 
 static int do_block = 0;
 
-static int next_block_number;
-
 static void
 xcoffout_block (block, depth, args)
      register tree block;
@@ -396,7 +393,7 @@ xcoffout_block (block, depth, args)
       if (TREE_USED (block))
 	{
 	  /* When we reach the specified block, output its symbols.  */
-	  if (next_block_number == do_block)
+	  if (BLOCK_NUMBER (block) == do_block)
 	    {
 	      /* Output the syms of the block.  */
 	      if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0)
@@ -408,11 +405,9 @@ xcoffout_block (block, depth, args)
 	      return;
 	    }
 	  /* If we are past the specified block, stop the scan.  */
-	  else if (next_block_number >= do_block)
+	  else if (BLOCK_NUMBER (block) >= do_block)
 	    return;
 
-	  next_block_number++;
-
 	  /* Output the subblocks.  */
 	  xcoffout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE);
 	}
@@ -443,7 +438,6 @@ xcoffout_begin_block (file, line, n)
     ASM_OUTPUT_LBB (file, line, n);
 
   do_block = n;
-  next_block_number = 0;
   xcoffout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl));
 }
 
@@ -513,8 +507,7 @@ xcoffout_begin_function (file, last_linenum)
      in sdbout_begin_block, but there is no guarantee that there will be any
      inner block 1, so we must do it here.  This gives a result similar to
      dbxout, so it does make some sense.  */
-  do_block = 0;
-  next_block_number = 0;
+  do_block = BLOCK_NUMBER (DECL_INITIAL (decl));
   xcoffout_block (DECL_INITIAL (current_function_decl), 0,
 		  DECL_ARGUMENTS (current_function_decl));