Table-driven attributes.

	* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
	config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
	config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
	config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
	config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
	config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
	doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
	tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
	* tree.h (struct tree_decl): Change machine_attributes to
	attributes.
	* doc/c-tree.texi: Document that all attributes are now attached
	to decls and types.
	* c-common.c (add_attribute, attrtab, attrtab_idx,
	default_valid_lang_attribute, valid_lang_attribute): Remove.
	(attribute_tables, attributes_initialized,
	c_common_attribute_table, default_lang_attribute_table): New
	variables.
	(handle_packed_attribute, handle_nocommon_attribute,
	handle_common_attribute, handle_noreturn_attribute,
	handle_unused_attribute, handle_const_attribute,
	handle_transparent_union_attribute, handle_constructor_attribute,
	handle_destructor_attribute, handle_mode_attribute,
	handle_section_attribute, handle_aligned_attribute,
	handle_weak_attribute, handle_alias_attribute,
	handle_no_instrument_function_attribute,
	handle_no_check_memory_usage_attribute, handle_malloc_attribute,
	handle_no_limit_stack_attribute, handle_pure_attribute): New
	functions.
	(init_attributes, decl_attributes): Rewrite to implement
	table-driven attributes.
	* c-common.h (enum attribute_flags): Move to tree.h.
	* c-format.c (decl_handle_format_attribute,
	decl_handle_format_arg_attribute): Rename to
	handle_format_attribute and handle_format_arg_attribute.  Update
	for table-driven attributes.
	* c-common.h (decl_handle_format_attribute,
	decl_handle_format_arg_attribute): Remove prototypes.
	(handle_format_attribute, handle_format_arg_attribute): Add
	prototypes.
	* c-decl.c (grokdeclarator): Handle attributes nested inside
	declarators.
	* c-parse.in (setattrs, maybe_setattrs): Remove.
	(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
	Update to handle nested attributes properly.
	(maybe_resetattrs, after_type_declarator,
	parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
	absdcl1_ea, direct_absdcl1): Update to handle nested attributes
	properly.
	(make_pointer_declarator): Update to handle nested attributes
	properly.
	* doc/extend.texi: Update documentation of limits of attributes
	syntax.  Warn about problems with attribute semantics in C++.
	* target.h (struct target): Remove valid_decl_attribute and
	valid_type_attribute.  Add attribute_table and
	function_attribute_inlinable_p.
	* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
	TARGET_VALID_TYPE_ATTRIBUTE): Remove.
	(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
	Add.
	(TARGET_INITIALIZER): Update.
	* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
	definition.
	(function_attribute_inlinable_p): New function.  Check for the
	presence of any machine attributes before using
	targetm.function_attribute_inlinable_p.
	(function_cannot_inline_p): Update.
	* Makefile.in (integrate.o): Update dependencies.
	* doc/tm.texi: Update documentation of target attributes and
	example definition of TARGET_VALID_TYPE_ATTRIBUTE.
	* tree.c (default_valid_attribute_p, valid_machine_attribute):
	Remove.
	(default_target_attribute_table,
	default_function_attribute_inlinable_p): New.
	(lookup_attribute): Update comment to clarify handling of multiple
	attributes with the same name.
	(merge_attributes, attribute_list_contained): Allow multiple
	attributes with the same name but different arguments to appear in
	the same attribute list.
	* tree.h (default_valid_attribute_p): Remove prototype.
	(struct attribute_spec): New.
	(default_target_attribute_table): Declare.
	(enum attribute_flags): Move from c-common.h.  Add
	ATTR_FLAG_TYPE_IN_PLACE.
	(default_function_attribute_inlinable_p): Declare.
	* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(vms_attribute_table): New.
	* config/arc/arc.c (arc_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(arc_attribute_table, arc_handle_interrupt_attribute): New.
	* config/arm/arm.c (arm_valid_type_attribute_p,
	arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
	Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
	define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(arm_attribute_table, arm_handle_fndecl_attribute,
	arm_handle_isr_attribute): New.
	* config/avr/avr.c (avr_valid_type_attribute,
	avr_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
	define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(avr_attribute_table, avr_handle_progmem_attribute,
	avr_handle_fndecl_attribute): New.
	* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(c4x_attribute_table, c4x_handle_fntype_attribute): New.
	* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(h8300_attribute_table, h8300_handle_fndecl_attribute,
	h8300_handle_eightbit_data_attribute,
	h8300_handle_tiny_data_attribute): New.
	* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
	i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
	Remove prototypes.
	(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
	declarations.
	* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
	define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(ix86_attribute_table, ix86_handle_cdecl_attribute,
	ix86_handle_regparm_attribute): New.
	* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
	i386_pe_valid_type_attribute_p): Remove.
	(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
	* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(ia64_attribute_table): New.
	* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
	interrupt_ident2, model_ident1, model_ident2): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(init_idents): Update.
	(m32r_attribute_table, m32r_handle_model_attribute): New.
	* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
	Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
	* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(mcore_attribute_table, mcore_handle_naked_attribute): New.
	* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
	* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
	* config/sh/sh.c (sh_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(sh_attribute_table, sh_handle_interrupt_handler_attribute,
	sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
	New.
	* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
	Remove.
	(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
	(TARGET_ATTRIBUTE_TABLE): Define.
	(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
	New.
	* config/v850/v850.c (v850_valid_decl_attribute): Remove.
	(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
	(TARGET_ATTRIBUTE_TABLE): Define.
	(v850_attribute_table, v850_handle_interrupt_attribute,
	v850_handle_data_area_attribute): New.
	* config/v850/v850-c.c (mark_current_function_as_interrupt):
	Return void.  Call decl_attributes instead of
	valid_machine_attribute.

cp:
	Table-driven attributes.
	* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
	* decl2.c (cplus_decl_attributes): Only take one attributes
	parameter.
	* cp-tree.c (cplus_decl_attributes): Update prototype.
	* class.c (finish_struct), decl.c (start_decl, start_function),
	decl2.c (grokfield), friend.c (do_friend), parse.y
	(parse_bitfield): Update calls to cplus_decl_attributes.
	* decl.c (grokdeclarator): Take a pointer to a single ordinary
	attribute list.
	* decl.h (grokdeclarator): Update prototype.
	* decl2.c (grokfield): Take a single ordinary attribute list.
	* friend.c (do_friend): Likewise.
	* decl.c (shadow_tag, groktypename, start_decl,
	start_handler_parms, grokdeclarator, grokparms, start_function,
	start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
	parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
	(process_template_parm, do_decl_instantiation): Pass single
	ordinary attribute lists around.
	* decl.c (grokdeclarator): Correct handling of nested attributes.
	Revert the patch
	1998-10-18  Jason Merrill  <jason@yorick.cygnus.com>
		* decl.c (grokdeclarator): Embedded attrs bind to the right,
		not the left.
	.
	* cp-tree.h (cp_valid_lang_attribute): Remove declaration
	(cp_attribute_table): Declare.
	* decl.c (valid_lang_attribute): Don't define.
	(lang_attribute_table): Define.
	(init_decl_processing): Initialize lang_attribute_table instead of
	valid_lang_attribute.
	* tree.c (cp_valid_lang_attribute): Remove.
	(handle_java_interface_attribute, handle_com_interface_attribute,
	handle_init_priority_attribute): New functions.
	(cp_attribute_table): New array.
	* decl2.c (import_export_class): Don't use
	targetm.valid_type_attribute.

testsuite:
	Table-driven attributes.
	* g++.dg/ext/attrib1.C: New test.

From-SVN: r45718

1 files changed, 130 insertions, 89 deletions

diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index 04e8add..32783ad 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -50,6 +50,10 @@ static tree verify_stmt_tree_r PARAMS ((tree *, int *, void *));
 static tree find_tree_r PARAMS ((tree *, int *, void *));
 extern int cp_statement_code_p PARAMS ((enum tree_code));
 
+static tree handle_java_interface_attribute PARAMS ((tree *, tree, tree, int, bool *));
+static tree handle_com_interface_attribute PARAMS ((tree *, tree, tree, int, bool *));
+static tree handle_init_priority_attribute PARAMS ((tree *, tree, tree, int, bool *));
+
 /* If REF is an lvalue, returns the kind of lvalue that REF is.
    Otherwise, returns clk_none.  If TREAT_CLASS_RVALUES_AS_LVALUES is
    non-zero, rvalues of class type are considered lvalues.  */
@@ -2182,108 +2186,145 @@ pod_type_p (t)
   return 1;
 }
 
-/* Return a 1 if ATTR_NAME and ATTR_ARGS denote a valid C++-specific
-   attribute for either declaration DECL or type TYPE and 0 otherwise.
-   Plugged into valid_lang_attribute.  */
-
-int
-cp_valid_lang_attribute (attr_name, attr_args, decl, type)
-  tree attr_name;
-  tree attr_args ATTRIBUTE_UNUSED;
-  tree decl ATTRIBUTE_UNUSED;
-  tree type ATTRIBUTE_UNUSED;
+/* Table of valid C++ attributes.  */
+const struct attribute_spec cp_attribute_table[] =
 {
-  if (is_attribute_p ("java_interface", attr_name))
+  /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+  { "java_interface", 0, 0, false, false, false, handle_java_interface_attribute },
+  { "com_interface",  0, 0, false, false, false, handle_com_interface_attribute },
+  { "init_priority",  1, 1, true,  false, false, handle_init_priority_attribute },
+  { NULL,             0, 0, false, false, false, NULL }
+};
+
+/* Handle a "java_interface" attribute; arguments as in
+   struct attribute_spec.handler.  */
+static tree
+handle_java_interface_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags;
+     bool *no_add_attrs;
+{
+  if (DECL_P (*node)
+      || !CLASS_TYPE_P (*node)
+      || !TYPE_FOR_JAVA (*node))
     {
-      if (attr_args != NULL_TREE
-	  || decl != NULL_TREE
-	  || ! CLASS_TYPE_P (type)
-	  || ! TYPE_FOR_JAVA (type))
-	{
-	  error ("`java_interface' attribute can only be applied to Java class definitions");
-	  return 0;
-	}
-      TYPE_JAVA_INTERFACE (type) = 1;
-      return 1;
+      error ("`%s' attribute can only be applied to Java class definitions",
+	     IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+      return NULL_TREE;
     }
-  if (is_attribute_p ("com_interface", attr_name))
-    {
-      static int warned;
-      if (attr_args != NULL_TREE
-	  || decl != NULL_TREE
-	  || ! CLASS_TYPE_P (type)
-	  || type != TYPE_MAIN_VARIANT (type))
-	{
-	  warning ("`com_interface' attribute can only be applied to class definitions");
-	  return 0;
-	}
+  if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE))
+    *node = build_type_copy (*node);
+  TYPE_JAVA_INTERFACE (*node) = 1;
 
-      if (! warned++)
-	warning ("\
-`com_interface' is obsolete; g++ vtables are now COM-compatible by default");
-      return 1;
-    }
-  else if (is_attribute_p ("init_priority", attr_name))
+  return NULL_TREE;
+}
+
+/* Handle a "com_interface" attribute; arguments as in
+   struct attribute_spec.handler.  */
+static tree
+handle_com_interface_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args ATTRIBUTE_UNUSED;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  static int warned;
+
+  *no_add_attrs = true;
+
+  if (DECL_P (*node)
+      || !CLASS_TYPE_P (*node)
+      || *node != TYPE_MAIN_VARIANT (*node))
     {
-      tree initp_expr = (attr_args ? TREE_VALUE (attr_args): NULL_TREE);
-      int pri;
+      warning ("`%s' attribute can only be applied to class definitions",
+	       IDENTIFIER_POINTER (name));
+      return NULL_TREE;
+    }
 
-      if (initp_expr)
-	STRIP_NOPS (initp_expr);
+  if (!warned++)
+    warning ("`%s' is obsolete; g++ vtables are now COM-compatible by default",
+	     IDENTIFIER_POINTER (name));
+
+  return NULL_TREE;
+}
+
+/* Handle an "init_priority" attribute; arguments as in
+   struct attribute_spec.handler.  */
+static tree
+handle_init_priority_attribute (node, name, args, flags, no_add_attrs)
+     tree *node;
+     tree name;
+     tree args;
+     int flags ATTRIBUTE_UNUSED;
+     bool *no_add_attrs;
+{
+  tree initp_expr = TREE_VALUE (args);
+  tree decl = *node;
+  tree type = TREE_TYPE (decl);
+  int pri;
+
+  STRIP_NOPS (initp_expr);
 	  
-      if (!initp_expr || TREE_CODE (initp_expr) != INTEGER_CST)
-	{
-	  error ("requested init_priority is not an integer constant");
-	  return 0;
-	}
+  if (!initp_expr || TREE_CODE (initp_expr) != INTEGER_CST)
+    {
+      error ("requested init_priority is not an integer constant");
+      *no_add_attrs = true;
+      return NULL_TREE;
+    }
 
-      pri = TREE_INT_CST_LOW (initp_expr);
+  pri = TREE_INT_CST_LOW (initp_expr);
 	
-      type = strip_array_types (type);
-
-      if (decl == NULL_TREE
-	  || TREE_CODE (decl) != VAR_DECL
-	  || ! TREE_STATIC (decl)
-	  || DECL_EXTERNAL (decl)
-	  || (TREE_CODE (type) != RECORD_TYPE
-	      && TREE_CODE (type) != UNION_TYPE)
-	  /* Static objects in functions are initialized the
-	     first time control passes through that
-	     function. This is not precise enough to pin down an
-	     init_priority value, so don't allow it. */
-	  || current_function_decl) 
-	{
-	  error ("can only use init_priority attribute on file-scope definitions of objects of class type");
-	  return 0;
-	}
-
-      if (pri > MAX_INIT_PRIORITY || pri <= 0)
-	{
-	  error ("requested init_priority is out of range");
-	  return 0;
-	}
+  type = strip_array_types (type);
+
+  if (decl == NULL_TREE
+      || TREE_CODE (decl) != VAR_DECL
+      || !TREE_STATIC (decl)
+      || DECL_EXTERNAL (decl)
+      || (TREE_CODE (type) != RECORD_TYPE
+	  && TREE_CODE (type) != UNION_TYPE)
+      /* Static objects in functions are initialized the
+	 first time control passes through that
+	 function. This is not precise enough to pin down an
+	 init_priority value, so don't allow it. */
+      || current_function_decl) 
+    {
+      error ("can only use `%s' attribute on file-scope definitions of objects of class type",
+	     IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+      return NULL_TREE;
+    }
 
-      /* Check for init_priorities that are reserved for
-	 language and runtime support implementations.*/
-      if (pri <= MAX_RESERVED_INIT_PRIORITY)
-	{
-	  warning 
-	    ("requested init_priority is reserved for internal use");
-	}
+  if (pri > MAX_INIT_PRIORITY || pri <= 0)
+    {
+      error ("requested init_priority is out of range");
+      *no_add_attrs = true;
+      return NULL_TREE;
+    }
 
-      if (SUPPORTS_INIT_PRIORITY)
-	{
-	  DECL_INIT_PRIORITY (decl) = pri;
-	  return 1;
-	}
-      else
-	{
-	  error ("init_priority attribute is not supported on this platform");
-	  return 0;
-	}
+  /* Check for init_priorities that are reserved for
+     language and runtime support implementations.*/
+  if (pri <= MAX_RESERVED_INIT_PRIORITY)
+    {
+      warning 
+	("requested init_priority is reserved for internal use");
     }
 
-  return 0;
+  if (SUPPORTS_INIT_PRIORITY)
+    {
+      DECL_INIT_PRIORITY (decl) = pri;
+      return NULL_TREE;
+    }
+  else
+    {
+      error ("`%s' attribute is not supported on this platform",
+	     IDENTIFIER_POINTER (name));
+      *no_add_attrs = true;
+      return NULL_TREE;
+    }
 }
 
 /* Return a new PTRMEM_CST of the indicated TYPE.  The MEMBER is the