Additional small changes to support opaque modes

After building some larger codes using opaque types and some c++ codes
using opaque types it became clear I needed to go through and look for
places where opaque types and modes needed to be handled. A whole pile
of one-liners.

gcc/
	* typeclass.h: Add opaque_type_class.
	* builtins.c (type_to_class): Identify opaque type class.
	* dwarf2out.c (is_base_type): Handle opaque types.
	(gen_type_die_with_usage): Handle opaque types.
	* expr.c (count_type_elements): Opaque types should
	never have initializers.
	* ipa-devirt.c (odr_types_equivalent_p): No type-specific handling
	for opaque types is needed as it eventually checks the underlying
	mode which is what is important.
	* tree-streamer.c (record_common_node): Handle opaque types.
	* tree.c (type_contains_placeholder_1): Handle opaque types.
	(type_cache_hasher::equal): No additional comparison needed for
	opaque types.
gcc/c-family
	* c-pretty-print.c (c_pretty_printer::simple_type_specifier):
	Treat opaque types like other types.
	(c_pretty_printer::direct_abstract_declarator): Opaque types are
	supported types.
gcc/c
	* c-aux-info.c (gen_type): Support opaque types.
gcc/cp
	* error.c (dump_type): Handle opaque types.
	(dump_type_prefix): Handle opaque types.
	(dump_type_suffix): Handle opaque types.
	(dump_expr): Handle opaque types.
	* pt.c (tsubst): Allow opaque types in templates.
	(unify): Allow opaque types in templates.
	* typeck.c (structural_comptypes): Handle comparison
	of opaque types.

12 files changed, 19 insertions, 1 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index a75b24c..40e77c7 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -2228,6 +2228,7 @@ type_to_class (tree type)
     case ARRAY_TYPE:	   return (TYPE_STRING_FLAG (type)
 				   ? string_type_class : array_type_class);
     case LANG_TYPE:	   return lang_type_class;
+    case OPAQUE_TYPE:      return opaque_type_class;
     default:		   return no_type_class;
     }
 }
diff --git a/gcc/c-family/c-pretty-print.c b/gcc/c-family/c-pretty-print.c
index 8953e3b..3027703 100644
--- a/gcc/c-family/c-pretty-print.c
+++ b/gcc/c-family/c-pretty-print.c
@@ -342,6 +342,7 @@ c_pretty_printer::simple_type_specifier (tree t)
       break;
 
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case BOOLEAN_TYPE:
     case INTEGER_TYPE:
     case REAL_TYPE:
@@ -662,6 +663,7 @@ c_pretty_printer::direct_abstract_declarator (tree t)
 
     case IDENTIFIER_NODE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case BOOLEAN_TYPE:
     case INTEGER_TYPE:
     case REAL_TYPE:
diff --git a/gcc/c/c-aux-info.c b/gcc/c/c-aux-info.c
index ffc8099..bdeef52 100644
--- a/gcc/c/c-aux-info.c
+++ b/gcc/c/c-aux-info.c
@@ -409,6 +409,7 @@ gen_type (const char *ret_val, tree t, formals_style style)
 	    data_type = concat ("unsigned ", data_type, NULL);
 	  break;
 
+	case OPAQUE_TYPE:
 	case REAL_TYPE:
 	  data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
 	  break;
diff --git a/gcc/cp/error.c b/gcc/cp/error.c
index 396558b..d27545d 100644
--- a/gcc/cp/error.c
+++ b/gcc/cp/error.c
@@ -529,6 +529,7 @@ dump_type (cxx_pretty_printer *pp, tree t, int flags)
     case INTEGER_TYPE:
     case REAL_TYPE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case BOOLEAN_TYPE:
     case COMPLEX_TYPE:
     case VECTOR_TYPE:
@@ -874,6 +875,7 @@ dump_type_prefix (cxx_pretty_printer *pp, tree t, int flags)
     case UNION_TYPE:
     case LANG_TYPE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case TYPENAME_TYPE:
     case COMPLEX_TYPE:
     case VECTOR_TYPE:
@@ -997,6 +999,7 @@ dump_type_suffix (cxx_pretty_printer *pp, tree t, int flags)
     case UNION_TYPE:
     case LANG_TYPE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case TYPENAME_TYPE:
     case COMPLEX_TYPE:
     case VECTOR_TYPE:
@@ -2810,6 +2813,7 @@ dump_expr (cxx_pretty_printer *pp, tree t, int flags)
     case ENUMERAL_TYPE:
     case REAL_TYPE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case BOOLEAN_TYPE:
     case INTEGER_TYPE:
     case COMPLEX_TYPE:
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 463b1c3..b037786 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -15376,6 +15376,7 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
     case ERROR_MARK:
     case IDENTIFIER_NODE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case REAL_TYPE:
     case COMPLEX_TYPE:
     case VECTOR_TYPE:
@@ -23588,6 +23589,7 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
     case BOOLEAN_TYPE:
     case ENUMERAL_TYPE:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case NULLPTR_TYPE:
       if (TREE_CODE (arg) != TREE_CODE (parm))
 	return unify_type_mismatch (explain_p, parm, arg);
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index 700e166..729c706 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -1314,6 +1314,7 @@ structural_comptypes (tree t1, tree t2, int strict)
       /* All void and bool types are the same.  */
       break;
 
+    case OPAQUE_TYPE:
     case INTEGER_TYPE:
     case FIXED_POINT_TYPE:
     case REAL_TYPE:
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 07e1a92..01e7ae1 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -13038,6 +13038,7 @@ is_base_type (tree type)
       return 1;
 
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case ARRAY_TYPE:
     case RECORD_TYPE:
     case UNION_TYPE:
@@ -25776,6 +25777,7 @@ gen_type_die_with_usage (tree type, dw_die_ref context_die,
       return;
 
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case INTEGER_TYPE:
     case REAL_TYPE:
     case FIXED_POINT_TYPE:
diff --git a/gcc/expr.c b/gcc/expr.c
index 83aa63c..25e93b6 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -6171,6 +6171,7 @@ count_type_elements (const_tree type, bool for_ctor_p)
       return 0;
 
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case METHOD_TYPE:
     case FUNCTION_TYPE:
     case LANG_TYPE:
diff --git a/gcc/ipa-devirt.c b/gcc/ipa-devirt.c
index 6e6df0b2..0f2b814 100644
--- a/gcc/ipa-devirt.c
+++ b/gcc/ipa-devirt.c
@@ -1521,6 +1521,7 @@ odr_types_equivalent_p (tree t1, tree t2, bool warn, bool *warned,
 	break;
       }
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case NULLPTR_TYPE:
       break;
 
diff --git a/gcc/tree-streamer.c b/gcc/tree-streamer.c
index b0afa1d..a393983 100644
--- a/gcc/tree-streamer.c
+++ b/gcc/tree-streamer.c
@@ -317,6 +317,7 @@ record_common_node (struct streamer_tree_cache_d *cache, tree node)
     case TREE_LIST:
     case VOID_CST:
     case VOID_TYPE:
+    case OPAQUE_TYPE:
       /* No recursive trees.  */
       break;
     case ARRAY_TYPE:
diff --git a/gcc/tree.c b/gcc/tree.c
index 531fe96..d6ba553 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -3972,6 +3972,7 @@ type_contains_placeholder_1 (const_tree type)
   switch (TREE_CODE (type))
     {
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case COMPLEX_TYPE:
     case ENUMERAL_TYPE:
     case BOOLEAN_TYPE:
@@ -7100,6 +7101,7 @@ type_cache_hasher::equal (type_hash *a, type_hash *b)
   switch (TREE_CODE (a->type))
     {
     case VOID_TYPE:
+    case OPAQUE_TYPE:
     case COMPLEX_TYPE:
     case POINTER_TYPE:
     case REFERENCE_TYPE:
diff --git a/gcc/typeclass.h b/gcc/typeclass.h
index 434e6ac..b4e3dda2 100644
--- a/gcc/typeclass.h
+++ b/gcc/typeclass.h
@@ -37,7 +37,7 @@ enum type_class
   function_type_class, method_type_class,
   record_type_class, union_type_class,
   array_type_class, string_type_class,
-  lang_type_class
+  lang_type_class, opaque_type_class
 };
 
 #endif /* GCC_TYPECLASS_H */