tree.h (TYPE_REF_IS_RVALUE): Define.

	* tree.h (TYPE_REF_IS_RVALUE): Define.
	* dwarf2out.c (attr_checksum_ordered, is_type_die, is_comdat_die,
	should_move_die_to_comdat, prune_unused_types_walk): Handle
	DW_TAG_rvalue_reference_type like DW_TAG_reference_type.
	(modified_type_die, gen_reference_type_die): Emit
	DW_TAG_rvalue_reference_type instead of DW_TAG_reference_type
	if TYPE_REF_IS_RVALUE and -gdwarf-4.

	* cp-tree.h (TYPE_REF_IS_RVALUE): Remove.

	* g++.dg/debug/dwarf2/rv1.C: New test.

From-SVN: r158542

7 files changed, 56 insertions, 8 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5397101..05eec88 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2010-04-20  Jakub Jelinek  <jakub@redhat.com>
+
+	* tree.h (TYPE_REF_IS_RVALUE): Define.
+	* dwarf2out.c (attr_checksum_ordered, is_type_die, is_comdat_die,
+	should_move_die_to_comdat, prune_unused_types_walk): Handle
+	DW_TAG_rvalue_reference_type like DW_TAG_reference_type.
+	(modified_type_die, gen_reference_type_die): Emit
+	DW_TAG_rvalue_reference_type instead of DW_TAG_reference_type
+	if TYPE_REF_IS_RVALUE and -gdwarf-4.
+
 2010-04-20  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	PR target/43635
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 64a440d..8c264f5 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2010-04-20  Jakub Jelinek  <jakub@redhat.com>
+
+	* cp-tree.h (TYPE_REF_IS_RVALUE): Remove.
+
 2010-04-19  Dodji Seketeli  <dodji@redhat.com>
 
 	PR c++/43704
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 22ee2d7..26059046 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -74,7 +74,6 @@ framework extensions, you must include this file before toplev.h, not after.
       BASELINK_QUALIFIED_P (in BASELINK)
       TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
       TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
-      TYPE_REF_IS_RVALUE (in REFERENCE_TYPE)
       ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
       CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
       LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
@@ -3200,10 +3199,6 @@ more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
 #define TYPE_REF_OBJ_P(NODE)					\
   (TREE_CODE (NODE) == REFERENCE_TYPE && TYPE_OBJ_P (TREE_TYPE (NODE)))
 
-/* True if reference type NODE is an rvalue reference */
-#define TYPE_REF_IS_RVALUE(NODE) \
-  TREE_LANG_FLAG_0 (REFERENCE_TYPE_CHECK (NODE))
-
 /* Returns true if NODE is a pointer to an object, or a pointer to
    void.  Keep these checks in ascending tree code order.  */
 #define TYPE_PTROBV_P(NODE)					\
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 6e76998..b044ab7 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -8245,6 +8245,7 @@ attr_checksum_ordered (enum dwarf_tag tag, dw_attr_ref at,
       if ((at->dw_attr == DW_AT_type
 	   && (tag == DW_TAG_pointer_type
 	       || tag == DW_TAG_reference_type
+	       || tag == DW_TAG_rvalue_reference_type
 	       || tag == DW_TAG_ptr_to_member_type))
 	  || (at->dw_attr == DW_AT_friend
 	      && tag == DW_TAG_friend))
@@ -8959,6 +8960,7 @@ is_type_die (dw_die_ref die)
     case DW_TAG_enumeration_type:
     case DW_TAG_pointer_type:
     case DW_TAG_reference_type:
+    case DW_TAG_rvalue_reference_type:
     case DW_TAG_string_type:
     case DW_TAG_structure_type:
     case DW_TAG_subroutine_type:
@@ -8996,6 +8998,7 @@ is_comdat_die (dw_die_ref c)
 
   if (c->die_tag == DW_TAG_pointer_type
       || c->die_tag == DW_TAG_reference_type
+      || c->die_tag == DW_TAG_rvalue_reference_type
       || c->die_tag == DW_TAG_const_type
       || c->die_tag == DW_TAG_volatile_type)
     {
@@ -9244,6 +9247,7 @@ should_move_die_to_comdat (dw_die_ref die)
     case DW_TAG_interface_type:
     case DW_TAG_pointer_type:
     case DW_TAG_reference_type:
+    case DW_TAG_rvalue_reference_type:
     case DW_TAG_string_type:
     case DW_TAG_subroutine_type:
     case DW_TAG_ptr_to_member_type:
@@ -12192,7 +12196,11 @@ modified_type_die (tree type, int is_const_type, int is_volatile_type,
     }
   else if (code == REFERENCE_TYPE)
     {
-      mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die, type);
+      if (TYPE_REF_IS_RVALUE (type) && dwarf_version >= 4)
+	mod_type_die = new_die (DW_TAG_rvalue_reference_type, comp_unit_die,
+				type);
+      else
+	mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die, type);
       add_AT_unsigned (mod_type_die, DW_AT_byte_size,
 		       simple_type_size_in_bits (type) / BITS_PER_UNIT);
       item_type = TREE_TYPE (type);
@@ -18634,8 +18642,12 @@ gen_pointer_type_die (tree type, dw_die_ref context_die)
 static void
 gen_reference_type_die (tree type, dw_die_ref context_die)
 {
-  dw_die_ref ref_die
-    = new_die (DW_TAG_reference_type, scope_die_for (type, context_die), type);
+  dw_die_ref ref_die, scope_die = scope_die_for (type, context_die);
+
+  if (TYPE_REF_IS_RVALUE (type) && dwarf_version >= 4)
+    ref_die = new_die (DW_TAG_rvalue_reference_type, scope_die, type);
+  else
+    ref_die = new_die (DW_TAG_reference_type, scope_die, type);
 
   equate_type_number_to_die (type, ref_die);
   add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die);
@@ -20907,6 +20919,7 @@ prune_unused_types_walk (dw_die_ref die)
     case DW_TAG_packed_type:
     case DW_TAG_pointer_type:
     case DW_TAG_reference_type:
+    case DW_TAG_rvalue_reference_type:
     case DW_TAG_volatile_type:
     case DW_TAG_typedef:
     case DW_TAG_array_type:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 73295fc..f479782 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2010-04-20  Jakub Jelinek  <jakub@redhat.com>
+
+	* g++.dg/debug/dwarf2/rv1.C: New test.
+
 2010-04-20  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	PR target/43635
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/rv1.C b/gcc/testsuite/g++.dg/debug/dwarf2/rv1.C
new file mode 100644
index 0000000..c954daa
--- /dev/null
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/rv1.C
@@ -0,0 +1,15 @@
+// { dg-do compile }
+// { dg-options "-g -dA -gdwarf-4 -std=c++0x" }
+// { dg-final { scan-assembler-times "DIE\[^\n\r\]*DW_TAG_reference_type" 1 } }
+// { dg-final { scan-assembler-times "DIE\[^\n\r\]*DW_TAG_rvalue_reference_type" 1 } }
+
+struct A { A (); ~A (); };
+struct B { B (); ~B (); };
+
+void
+foo ()
+{
+  A v;
+  A &a = v;
+  B &&b = B ();
+}
diff --git a/gcc/tree.h b/gcc/tree.h
index 7d87256..f73be79 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -504,6 +504,9 @@ struct GTY(()) tree_common {
        OMP_CLAUSE_PRIVATE_OUTER_REF in
 	   OMP_CLAUSE_PRIVATE
 
+       TYPE_REF_IS_RVALUE in
+	   REFERENCE_TYPE
+
    protected_flag:
 
        TREE_PROTECTED in
@@ -1347,6 +1350,10 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int,
 /* Used in classes in C++. */
 #define TREE_PROTECTED(NODE) ((NODE)->base.protected_flag)
 
+/* True if reference type NODE is a C++ rvalue reference.  */
+#define TYPE_REF_IS_RVALUE(NODE) \
+  (REFERENCE_TYPE_CHECK (NODE)->base.private_flag)
+
 /* Nonzero in a _DECL if the use of the name is defined as a
    deprecated feature by __attribute__((deprecated)).  */
 #define TREE_DEPRECATED(NODE) \