dwarf2out.h (enum dw_val_class): Add dw_val_class_const_implicit...

	* dwarf2out.h (enum dw_val_class): Add dw_val_class_const_implicit,
	dw_val_class_unsigned_const_implicit and dw_val_class_file_implicit.
	(struct dw_val_node): Add val_file_implicit field.
	* dwarf2out.c (dw_val_equal_p, print_dw_val, attr_checksum,
	attr_checksum_ordered, same_dw_val_p, size_of_die, value_format,
	output_die): Handle dw_val_class_const_implicit,
	dw_val_class_unsigned_const_implicit and dw_val_class_file_implicit.
	(abbrev_die_table): Change into va_gc vec.
	(abbrev_die_table_allocated, abbrev_die_table_in_use,
	ABBREV_DIE_TABLE_INCREMENT): Remove.
	(AT_int, AT_unsigned, AT_file): Allow dw_val_class_*_implicit.
	(abbrev_opt_start, abbrev_usage_count, sorted_abbrev_dies): New
	variables.
	(build_abbrev_table): Adjust for abbrev_die_table being a va_gc vec.
	If abbrev_opt_start, fill in abbrev_usage_count and abbrev_dies
	vectors.
	(die_abbrev_cmp, optimize_implicit_const, optimize_abbrev_table): New
	functions.
	(output_die_abbrevs): For DW_FORM_implicit_const emit sleb128 with
	the implicit value.
	(output_abbrev_section): Adjust for abbrev_die_table being a va_gc
	vec.
	(output_comp_unit): Initialize abbrev_opt_start if emitting the main
	unit.  Call optimize_abbrev_table.
	(dwarf2out_init, dwarf2out_finish, dwarf2out_c_finalize): Adjust for
	abbrev_die_table being a va_gc vec.

From-SVN: r241709

gcc/ChangeLog

 2016-10-31  Jakub Jelinek  <jakub@redhat.com>
 
+	* dwarf2out.h (enum dw_val_class): Add dw_val_class_const_implicit,
+	dw_val_class_unsigned_const_implicit and dw_val_class_file_implicit.
+	(struct dw_val_node): Add val_file_implicit field.
+	* dwarf2out.c (dw_val_equal_p, print_dw_val, attr_checksum,
+	attr_checksum_ordered, same_dw_val_p, size_of_die, value_format,
+	output_die): Handle dw_val_class_const_implicit,
+	dw_val_class_unsigned_const_implicit and dw_val_class_file_implicit.
+	(abbrev_die_table): Change into va_gc vec.
+	(abbrev_die_table_allocated, abbrev_die_table_in_use,
+	ABBREV_DIE_TABLE_INCREMENT): Remove.
+	(AT_int, AT_unsigned, AT_file): Allow dw_val_class_*_implicit.
+	(abbrev_opt_start, abbrev_usage_count, sorted_abbrev_dies): New
+	variables.
+	(build_abbrev_table): Adjust for abbrev_die_table being a va_gc vec.
+	If abbrev_opt_start, fill in abbrev_usage_count and abbrev_dies
+	vectors.
+	(die_abbrev_cmp, optimize_implicit_const, optimize_abbrev_table): New
+	functions.
+	(output_die_abbrevs): For DW_FORM_implicit_const emit sleb128 with
+	the implicit value.
+	(output_abbrev_section): Adjust for abbrev_die_table being a va_gc
+	vec.
+	(output_comp_unit): Initialize abbrev_opt_start if emitting the main
+	unit.  Call optimize_abbrev_table.
+	(dwarf2out_init, dwarf2out_finish, dwarf2out_c_finalize): Adjust for
+	abbrev_die_table being a va_gc vec.
+
 	PR tree-optimization/77860
 	* tree-ssa-reassoc.c (eliminate_using_constants): Handle
 	also integral complex and vector constants.

gcc/dwarf2out.h

@@ -153,7 +153,10 @@ enum dw_val_class
   dw_val_class_vms_delta,
   dw_val_class_high_pc,
   dw_val_class_discr_value,
-  dw_val_class_discr_list
+  dw_val_class_discr_list,
+  dw_val_class_const_implicit,
+  dw_val_class_unsigned_const_implicit,
+  dw_val_class_file_implicit
 };
 
 /* Describe a floating point constant value, or a vector constant value.  */
@@ -198,7 +201,8 @@ struct GTY(()) dw_val_node {
       dw_loc_list_ref GTY ((tag ("dw_val_class_loc_list"))) val_loc_list;
       dw_loc_descr_ref GTY ((tag ("dw_val_class_loc"))) val_loc;
       HOST_WIDE_INT GTY ((default)) val_int;
-      unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
+      unsigned HOST_WIDE_INT
+	GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
       double_int GTY ((tag ("dw_val_class_const_double"))) val_double;
       wide_int_ptr GTY ((tag ("dw_val_class_wide_int"))) val_wide;
       dw_vec_const GTY ((tag ("dw_val_class_vec"))) val_vec;
@@ -212,6 +216,8 @@ struct GTY(()) dw_val_node {
       char * GTY ((tag ("dw_val_class_lbl_id"))) val_lbl_id;
       unsigned char GTY ((tag ("dw_val_class_flag"))) val_flag;
       struct dwarf_file_data * GTY ((tag ("dw_val_class_file"))) val_file;
+      struct dwarf_file_data *
+	GTY ((tag ("dw_val_class_file_implicit"))) val_file_implicit;
       unsigned char GTY ((tag ("dw_val_class_data8"))) val_data8[8];
       tree GTY ((tag ("dw_val_class_decl_ref"))) val_decl_ref;
       struct dw_val_vms_delta_union