Rename DEFAULT_ARG to DEFERRED_PARSE.

From-SVN: r272600

13 files changed, 100 insertions, 52 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 800ae29..f47df48 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,50 @@
+2019-06-23  Marek Polacek  <polacek@redhat.com>
+
+	* call.c (convert_default_arg): Use DEFERRED_PARSE instead of
+	DEFAULT_ARG.
+	* cp-objcp-common.c (cp_tree_size): Likewise.  Use tree_deferred_parse
+	instead of tree_default_arg.
+	* cp-tree.def: Rename DEFAULT_ARG to DEFERRED_PARSE.
+	* cp-tree.h: Rename DEFARG_TOKENS to DEFPARSE_TOKENS.  Rename
+	DEFARG_INSTANTIATIONS to DEFPARSE_INSTANTIATIONS.  Rename
+	tree_default_arg to tree_deferred_parse.
+	(UNPARSED_NOEXCEPT_SPEC_P): Use DEFERRED_PARSE instead of DEFAULT_ARG.
+	(cp_tree_node_structure_enum): Rename TS_CP_DEFAULT_ARG to
+	TS_CP_DEFERRED_PARSE.
+	(lang_tree_node): Rename tree_default_arg to tree_deferred_parse.
+	Rename default_arg to deferred_parse.  Use TS_CP_DEFERRED_PARSE instead
+	of TS_CP_DEFAULT_ARG.
+	(defarg_location): Remove declaration.
+	(defparse_location): Add declaration.
+	* decl.c (grokfndecl): Use DEFERRED_PARSE instead of DEFAULT_ARG.
+	Call defparse_location instead of defarg_location.
+	(check_default_argument): Use DEFERRED_PARSE instead of DEFAULT_ARG.
+	(cp_tree_node_structure): Likewise.  Use TS_CP_DEFERRED_PARSE instead
+	of TS_CP_DEFAULT_ARG.
+	* decl2.c (grokfield): Use DEFERRED_PARSE instead of DEFAULT_ARG.
+	* error.c (dump_expr): Likewise.
+	(location_of): Likewise.
+	* init.c (get_nsdmi): Likewise.
+	* parser.c (cp_parser_save_noexcept): Likewise.  Use DEFPARSE_TOKENS
+	instead of DEFARG_TOKENS.
+	(cp_parser_late_noexcept_specifier): Likewise.
+	(cp_parser_late_parse_one_default_arg): Use DEFPARSE_TOKENS instead
+	of DEFARG_TOKENS.
+	(cp_parser_late_parsing_default_args): Use DEFERRED_PARSE instead of
+	DEFAULT_ARG.  Use DEFPARSE_INSTANTIATIONS instead of
+	DEFARG_INSTANTIATIONS.
+	(cp_parser_cache_defarg): Use DEFERRED_PARSE instead of DEFAULT_ARG.
+	Use DEFPARSE_TOKENS instead of DEFARG_TOKENS.  Use
+	DEFPARSE_INSTANTIATIONS instead of DEFARG_INSTANTIATIONS.
+	(defparse_location): Renamed from defarg_location.
+	* pt.c (tsubst_default_argument): Use DEFERRED_PARSE instead of
+	DEFAULT_ARG.
+	(tsubst_arg_types): Likewise.
+	(dependent_type_p_r): Likewise.
+	* tree.c (cp_tree_equal): Likewise.
+	(cp_walk_subtrees): Likewise.
+	* typeck.c (convert_arguments): Likewise.
+
 2019-06-22  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/86476 - noexcept-specifier is a complete-class context.
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index 8367ef7..e4923f4 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -7674,7 +7674,7 @@ convert_default_arg (tree type, tree arg, tree fn, int parmnum,
 
   /* If the ARG is an unparsed default argument expression, the
      conversion cannot be performed.  */
-  if (TREE_CODE (arg) == DEFAULT_ARG)
+  if (TREE_CODE (arg) == DEFERRED_PARSE)
     {
       if (complain & tf_error)
 	error ("call to %qD uses the default argument for parameter %P, which "
diff --git a/gcc/cp/cp-objcp-common.c b/gcc/cp/cp-objcp-common.c
index a8f7db0..21d162e 100644
--- a/gcc/cp/cp-objcp-common.c
+++ b/gcc/cp/cp-objcp-common.c
@@ -67,7 +67,7 @@ cp_tree_size (enum tree_code code)
     case PTRMEM_CST:		return sizeof (ptrmem_cst);
     case BASELINK:		return sizeof (tree_baselink);
     case TEMPLATE_PARM_INDEX:	return sizeof (template_parm_index);
-    case DEFAULT_ARG:		return sizeof (tree_default_arg);
+    case DEFERRED_PARSE:	return sizeof (tree_deferred_parse);
     case DEFERRED_NOEXCEPT:	return sizeof (tree_deferred_noexcept);
     case OVERLOAD:		return sizeof (tree_overload);
     case STATIC_ASSERT:         return sizeof (tree_static_assert);
diff --git a/gcc/cp/cp-tree.def b/gcc/cp/cp-tree.def
index 475c584..4db1d31 100644
--- a/gcc/cp/cp-tree.def
+++ b/gcc/cp/cp-tree.def
@@ -207,11 +207,11 @@ DEFTREECODE (USING_DECL, "using_decl", tcc_declaration, 0)
 /* A using directive. The operand is USING_STMT_NAMESPACE.  */
 DEFTREECODE (USING_STMT, "using_stmt", tcc_statement, 1)
 
-/* An un-parsed default argument.  Holds a vector of input tokens and
+/* An un-parsed operand.  Holds a vector of input tokens and
    a vector of places where the argument was instantiated before
-   parsing had occurred.  This is also used for delayed NSDMIs and
-   noexcept-specifier parsing.  */
-DEFTREECODE (DEFAULT_ARG, "default_arg", tcc_exceptional, 0)
+   parsing had occurred.  This is used for default arguments, delayed
+   NSDMIs, and noexcept-specifier parsing.  */
+DEFTREECODE (DEFERRED_PARSE, "deferred_parse", tcc_exceptional, 0)
 
 /* An uninstantiated/unevaluated noexcept-specification.  For the
    uninstantiated case, DEFERRED_NOEXCEPT_PATTERN is the pattern from the
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 2c05e63..bf47f67 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -1182,14 +1182,14 @@ enum cp_identifier_kind {
 #define C_TYPE_FIELDS_READONLY(TYPE) \
   (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
 
-/* The tokens stored in the default argument.  */
+/* The tokens stored in the unparsed operand.  */
 
-#define DEFARG_TOKENS(NODE) \
-  (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->tokens)
-#define DEFARG_INSTANTIATIONS(NODE) \
-  (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->instantiations)
+#define DEFPARSE_TOKENS(NODE) \
+  (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->tokens)
+#define DEFPARSE_INSTANTIATIONS(NODE) \
+  (((struct tree_deferred_parse *)DEFERRED_PARSE_CHECK (NODE))->instantiations)
 
-struct GTY (()) tree_default_arg {
+struct GTY (()) tree_deferred_parse {
   struct tree_base base;
   struct cp_token_cache *tokens;
   vec<tree, va_gc> *instantiations;
@@ -1208,7 +1208,7 @@ struct GTY (()) tree_default_arg {
    && DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (NODE)) == NULL_TREE)
 #define UNPARSED_NOEXCEPT_SPEC_P(NODE) \
   ((NODE) && (TREE_PURPOSE (NODE)) \
-   && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFAULT_ARG))
+   && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_PARSE))
 
 struct GTY (()) tree_deferred_noexcept {
   struct tree_base base;
@@ -1589,7 +1589,7 @@ enum cp_tree_node_structure_enum {
   TS_CP_OVERLOAD,
   TS_CP_BASELINK,
   TS_CP_TEMPLATE_DECL,
-  TS_CP_DEFAULT_ARG,
+  TS_CP_DEFERRED_PARSE,
   TS_CP_DEFERRED_NOEXCEPT,
   TS_CP_STATIC_ASSERT,
   TS_CP_ARGUMENT_PACK_SELECT,
@@ -1610,7 +1610,7 @@ union GTY((desc ("cp_tree_node_structure (&%h)"),
   struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
   struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
   struct tree_template_decl GTY ((tag ("TS_CP_TEMPLATE_DECL"))) template_decl;
-  struct tree_default_arg GTY ((tag ("TS_CP_DEFAULT_ARG"))) default_arg;
+  struct tree_deferred_parse GTY ((tag ("TS_CP_DEFERRED_PARSE"))) deferred_parse;
   struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
   struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
   struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT"))) 
@@ -6704,7 +6704,7 @@ extern void cp_finish_omp_range_for (tree, tree);
 extern bool parsing_nsdmi (void);
 extern bool parsing_default_capturing_generic_lambda_in_template (void);
 extern void inject_this_parameter (tree, cp_cv_quals);
-extern location_t defarg_location (tree);
+extern location_t defparse_location (tree);
 extern void maybe_show_extern_c_location (void);
 extern bool literal_integer_zerop (const_tree);
 
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 8a82c75..5d49535 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -8963,9 +8963,9 @@ grokfndecl (tree ctype,
 
 	  for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
 	    if (TREE_PURPOSE (t)
-		&& TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
+		&& TREE_CODE (TREE_PURPOSE (t)) == DEFERRED_PARSE)
 	    {
-	      error_at (defarg_location (TREE_PURPOSE (t)),
+	      error_at (defparse_location (TREE_PURPOSE (t)),
 			"default arguments are not allowed in declaration "
 			"of friend template specialization %qD",
 			decl);
@@ -13089,8 +13089,8 @@ check_default_argument (tree decl, tree arg, tsubst_flags_t complain)
   tree var;
   tree decl_type;
 
-  if (TREE_CODE (arg) == DEFAULT_ARG)
-    /* We get a DEFAULT_ARG when looking at an in-class declaration
+  if (TREE_CODE (arg) == DEFERRED_PARSE)
+    /* We get a DEFERRED_PARSE when looking at an in-class declaration
        with a default argument.  Ignore the argument for now; we'll
        deal with it after the class is complete.  */
     return arg;
@@ -16661,7 +16661,7 @@ cp_tree_node_structure (union lang_tree_node * t)
 {
   switch (TREE_CODE (&t->generic))
     {
-    case DEFAULT_ARG:		return TS_CP_DEFAULT_ARG;
+    case DEFERRED_PARSE:	return TS_CP_DEFERRED_PARSE;
     case DEFERRED_NOEXCEPT:	return TS_CP_DEFERRED_NOEXCEPT;
     case IDENTIFIER_NODE:	return TS_CP_IDENTIFIER;
     case OVERLOAD:		return TS_CP_OVERLOAD;
diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index 338db4a..206f04c 100644
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -920,7 +920,7 @@ grokfield (const cp_declarator *declarator,
 		  DECL_DECLARED_INLINE_P (value) = 1;
 		}
 	    }
-	  else if (TREE_CODE (init) == DEFAULT_ARG)
+	  else if (TREE_CODE (init) == DEFERRED_PARSE)
 	    error ("invalid initializer for member function %qD", value);
 	  else if (TREE_CODE (TREE_TYPE (value)) == METHOD_TYPE)
 	    {
diff --git a/gcc/cp/error.c b/gcc/cp/error.c
index d94f5a3..baeba7e 100644
--- a/gcc/cp/error.c
+++ b/gcc/cp/error.c
@@ -2661,7 +2661,7 @@ dump_expr (cxx_pretty_printer *pp, tree t, int flags)
       dump_expr (pp, TREE_OPERAND (t, 0), flags);
       break;
 
-    case DEFAULT_ARG:
+    case DEFERRED_PARSE:
       pp_string (pp, M_("<unparsed>"));
       break;
 
@@ -3050,8 +3050,8 @@ location_of (tree t)
 
   if (DECL_P (t))
     return DECL_SOURCE_LOCATION (t);
-  if (TREE_CODE (t) == DEFAULT_ARG)
-    return defarg_location (t);
+  if (TREE_CODE (t) == DEFERRED_PARSE)
+    return defparse_location (t);
   return cp_expr_loc_or_loc (t, input_location);
 }
 
diff --git a/gcc/cp/init.c b/gcc/cp/init.c
index e962113..d0f73ff 100644
--- a/gcc/cp/init.c
+++ b/gcc/cp/init.c
@@ -564,7 +564,7 @@ get_nsdmi (tree member, bool in_ctor, tsubst_flags_t complain)
       location_t expr_loc
 	= cp_expr_loc_or_loc (init, DECL_SOURCE_LOCATION (member));
       tree *slot;
-      if (TREE_CODE (init) == DEFAULT_ARG)
+      if (TREE_CODE (init) == DEFERRED_PARSE)
 	/* Unparsed.  */;
       else if (nsdmi_inst && (slot = nsdmi_inst->get (member)))
 	init = *slot;
@@ -629,7 +629,7 @@ get_nsdmi (tree member, bool in_ctor, tsubst_flags_t complain)
   else
     init = DECL_INITIAL (member);
 
-  if (init && TREE_CODE (init) == DEFAULT_ARG)
+  if (init && TREE_CODE (init) == DEFERRED_PARSE)
     {
       if (complain & tf_error)
 	{
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 4d4d329..e9bdfab 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -25267,7 +25267,7 @@ cp_parser_base_specifier (cp_parser* parser)
 /* Exception handling [gram.exception] */
 
 /* Save the tokens that make up the noexcept-specifier for a member-function.
-   Returns a DEFAULT_ARG.  */
+   Returns a DEFERRED_PARSE.  */
 
 static tree
 cp_parser_save_noexcept (cp_parser *parser)
@@ -25277,12 +25277,12 @@ cp_parser_save_noexcept (cp_parser *parser)
   cp_parser_cache_group (parser, CPP_CLOSE_PAREN, /*depth=*/0);
   cp_token *last = parser->lexer->next_token;
 
-  /* As with default arguments and NSDMIs, make use of DEFAULT_ARG
+  /* As with default arguments and NSDMIs, make use of DEFERRED_PARSE
      to carry the information we will need.  */
-  tree expr = make_node (DEFAULT_ARG);
+  tree expr = make_node (DEFERRED_PARSE);
   /* Save away the noexcept-specifier; we will process it when the
      class is complete.  */
-  DEFARG_TOKENS (expr) = cp_token_cache_new (first, last);
+  DEFPARSE_TOKENS (expr) = cp_token_cache_new (first, last);
   expr = build_tree_list (expr, NULL_TREE);
   return expr;
 }
@@ -25295,13 +25295,13 @@ static tree
 cp_parser_late_noexcept_specifier (cp_parser *parser, tree default_arg)
 {
   /* Make sure we've gotten something that hasn't been parsed yet.  */
-  gcc_assert (TREE_CODE (default_arg) == DEFAULT_ARG);
+  gcc_assert (TREE_CODE (default_arg) == DEFERRED_PARSE);
 
   push_unparsed_function_queues (parser);
 
   /* Push the saved tokens for the noexcept-specifier onto the parser's
      lexer stack.  */
-  cp_token_cache *tokens = DEFARG_TOKENS (default_arg);
+  cp_token_cache *tokens = DEFPARSE_TOKENS (default_arg);
   cp_parser_push_lexer_for_tokens (parser, tokens);
 
   /* Parse the cached noexcept-specifier.  */
@@ -28718,7 +28718,7 @@ cp_parser_save_member_function_body (cp_parser* parser,
 }
 
 /* Save the tokens that make up the in-class initializer for a non-static
-   data member.  Returns a DEFAULT_ARG.  */
+   data member.  Returns a DEFERRED_PARSE.  */
 
 static tree
 cp_parser_save_nsdmi (cp_parser* parser)
@@ -28955,7 +28955,7 @@ cp_parser_late_parse_one_default_arg (cp_parser *parser, tree decl,
 
   /* Push the saved tokens for the default argument onto the parser's
      lexer stack.  */
-  tokens = DEFARG_TOKENS (default_arg);
+  tokens = DEFPARSE_TOKENS (default_arg);
   cp_parser_push_lexer_for_tokens (parser, tokens);
 
   start_lambda_scope (decl);
@@ -29022,7 +29022,7 @@ cp_parser_late_parsing_nsdmi (cp_parser *parser, tree field)
 }
 
 /* FN is a FUNCTION_DECL which may contains a parameter with an
-   unparsed DEFAULT_ARG.  Parse the default args now.  This function
+   unparsed DEFERRED_PARSE.  Parse the default args now.  This function
    assumes that the current scope is the scope in which the default
    argument should be processed.  */
 
@@ -29060,7 +29060,7 @@ cp_parser_late_parsing_default_args (cp_parser *parser, tree fn)
       if (!default_arg)
 	continue;
 
-      if (TREE_CODE (default_arg) != DEFAULT_ARG)
+      if (TREE_CODE (default_arg) != DEFERRED_PARSE)
 	/* This can happen for a friend declaration for a function
 	   already declared with default arguments.  */
 	continue;
@@ -29072,7 +29072,7 @@ cp_parser_late_parsing_default_args (cp_parser *parser, tree fn)
       TREE_PURPOSE (parm) = parsed_arg;
 
       /* Update any instantiations we've already created.  */
-      for (insts = DEFARG_INSTANTIATIONS (default_arg), ix = 0;
+      for (insts = DEFPARSE_INSTANTIATIONS (default_arg), ix = 0;
 	   vec_safe_iterate (insts, ix, &copy); ix++)
 	TREE_PURPOSE (copy) = parsed_arg;
     }
@@ -30239,22 +30239,22 @@ cp_parser_cache_defarg (cp_parser *parser, bool nsdmi)
       token = cp_lexer_consume_token (parser->lexer);
     }
 
-  /* Create a DEFAULT_ARG to represent the unparsed default
+  /* Create a DEFERRED_PARSE to represent the unparsed default
      argument.  */
-  default_argument = make_node (DEFAULT_ARG);
-  DEFARG_TOKENS (default_argument)
+  default_argument = make_node (DEFERRED_PARSE);
+  DEFPARSE_TOKENS (default_argument)
     = cp_token_cache_new (first_token, token);
-  DEFARG_INSTANTIATIONS (default_argument) = NULL;
+  DEFPARSE_INSTANTIATIONS (default_argument) = NULL;
 
   return default_argument;
 }
 
-/* A location to use for diagnostics about an unparsed DEFAULT_ARG.  */
+/* A location to use for diagnostics about an unparsed DEFERRED_PARSE.  */
 
 location_t
-defarg_location (tree default_argument)
+defparse_location (tree default_argument)
 {
-  cp_token_cache *tokens = DEFARG_TOKENS (default_argument);
+  cp_token_cache *tokens = DEFPARSE_TOKENS (default_argument);
   location_t start = tokens->first->location;
   location_t end = tokens->last->location;
   return make_location (start, start, end);
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index fb89b93..00e4364 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -12814,7 +12814,7 @@ tsubst_default_argument (tree fn, int parmnum, tree type, tree arg,
   int errs = errorcount + sorrycount;
 
   /* This can happen in invalid code.  */
-  if (TREE_CODE (arg) == DEFAULT_ARG)
+  if (TREE_CODE (arg) == DEFERRED_PARSE)
     return arg;
 
   tree parm = FUNCTION_FIRST_USER_PARM (fn);
@@ -14092,7 +14092,7 @@ tsubst_arg_types (tree arg_types,
       default_arg = tsubst_copy_and_build (default_arg, args, complain, in_decl,
 					   false/*fn*/, false/*constexpr*/);
 
-    if (default_arg && TREE_CODE (default_arg) == DEFAULT_ARG)
+    if (default_arg && TREE_CODE (default_arg) == DEFERRED_PARSE)
       {
         /* We've instantiated a template before its default arguments
            have been parsed.  This can happen for a nested template
@@ -14100,7 +14100,8 @@ tsubst_arg_types (tree arg_types,
            argument in a call of this function.  */
         remaining_arg_types = 
           tree_cons (default_arg, type, remaining_arg_types);
-        vec_safe_push (DEFARG_INSTANTIATIONS(default_arg), remaining_arg_types);
+	vec_safe_push (DEFPARSE_INSTANTIATIONS (default_arg),
+		       remaining_arg_types);
       }
     else
       remaining_arg_types = 
@@ -25315,7 +25316,7 @@ dependent_type_p_r (tree type)
 	       affect overload resolution and treating it as dependent breaks
 	       things.  Same for an unparsed noexcept expression.  */
 	    if (TREE_CODE (noex) != DEFERRED_NOEXCEPT
-		&& TREE_CODE (noex) != DEFAULT_ARG
+		&& TREE_CODE (noex) != DEFERRED_PARSE
 		&& value_dependent_expression_p (noex))
 	      return true;
       return false;
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index ebfe362..37e24a1 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -3657,7 +3657,7 @@ cp_tree_equal (tree t1, tree t2)
     case IDENTIFIER_NODE:
     case SSA_NAME:
     case USING_DECL:
-    case DEFAULT_ARG:
+    case DEFERRED_PARSE:
       return false;
 
     case BASELINK:
@@ -4788,7 +4788,7 @@ cp_walk_subtrees (tree *tp, int *walk_subtrees_p, walk_tree_fn func,
   result = NULL_TREE;
   switch (code)
     {
-    case DEFAULT_ARG:
+    case DEFERRED_PARSE:
     case TEMPLATE_TEMPLATE_PARM:
     case BOUND_TEMPLATE_TEMPLATE_PARM:
     case UNBOUND_CLASS_TEMPLATE:
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index a8fb162..550064c 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -4104,7 +4104,7 @@ convert_arguments (tree typelist, vec<tree, va_gc> **values, tree fndecl,
 	 provide default arguments in a language conformant
 	 manner.  */
       if (fndecl && TREE_PURPOSE (typetail)
-	  && TREE_CODE (TREE_PURPOSE (typetail)) != DEFAULT_ARG)
+	  && TREE_CODE (TREE_PURPOSE (typetail)) != DEFERRED_PARSE)
 	{
 	  for (; typetail != void_list_node; ++i)
 	    {