mangle.c (is_std_substitution): Check for abi_tag.

gcc/cp/
	* mangle.c (is_std_substitution): Check for abi_tag.
libiberty/
	* cp-demangle.c (d_substitution): Handle abi tags on abbreviation.

From-SVN: r215647

gcc/cp/ChangeLog

@@ -1,3 +1,7 @@
+2014-09-26  Jason Merrill  <jason@redhat.com>
+
+	* mangle.c (find_substitution): Use write_abi_tags.
+
 2014-09-25  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/61945

gcc/cp/mangle.c

@@ -512,6 +512,7 @@ find_substitution (tree node)
   const int size = vec_safe_length (G.substitutions);
   tree decl;
   tree type;
+  const char *abbr = NULL;
 
   if (DEBUG_MANGLE)
     fprintf (stderr, "  ++ find_substitution (%s at %p)\n",
@@ -530,13 +531,10 @@ find_substitution (tree node)
   if (decl
       && is_std_substitution (decl, SUBID_ALLOCATOR)
       && !CLASSTYPE_USE_TEMPLATE (TREE_TYPE (decl)))
-    {
+    abbr = "Sa";
-      write_string ("Sa");
-      return 1;
-    }
 
   /* Check for std::basic_string.  */
-  if (decl && is_std_substitution (decl, SUBID_BASIC_STRING))
+  else if (decl && is_std_substitution (decl, SUBID_BASIC_STRING))
     {
       if (TYPE_P (node))
 	{
@@ -555,22 +553,16 @@ find_substitution (tree node)
 					       SUBID_CHAR_TRAITS)
 		  && is_std_substitution_char (TREE_VEC_ELT (args, 2),
 					       SUBID_ALLOCATOR))
-		{
+		abbr = "Ss";
-		  write_string ("Ss");
-		  return 1;
-		}
 	    }
 	}
       else
 	/* Substitute for the template name only if this isn't a type.  */
-	{
+	abbr = "Sb";
-	  write_string ("Sb");
-	  return 1;
-	}
     }
 
   /* Check for basic_{i,o,io}stream.  */
-  if (TYPE_P (node)
+  else if (TYPE_P (node)
 	   && cp_type_quals (type) == TYPE_UNQUALIFIED
 	   && CLASS_TYPE_P (type)
 	   && CLASSTYPE_USE_TEMPLATE (type)
@@ -587,35 +579,29 @@ find_substitution (tree node)
 	{
 	  /* Got them.  Is this basic_istream?  */
 	  if (is_std_substitution (decl, SUBID_BASIC_ISTREAM))
-	    {
+	    abbr = "Si";
-	      write_string ("Si");
-	      return 1;
-	    }
 	  /* Or basic_ostream?  */
 	  else if (is_std_substitution (decl, SUBID_BASIC_OSTREAM))
-	    {
+	    abbr = "So";
-	      write_string ("So");
-	      return 1;
-	    }
 	  /* Or basic_iostream?  */
 	  else if (is_std_substitution (decl, SUBID_BASIC_IOSTREAM))
-	    {
+	    abbr = "Sd";
-	      write_string ("Sd");
-	      return 1;
-	    }
 	}
     }
 
   /* Check for namespace std.  */
-  if (decl && DECL_NAMESPACE_STD_P (decl))
+  else if (decl && DECL_NAMESPACE_STD_P (decl))
     {
       write_string ("St");
       return 1;
     }
 
+  tree tags = NULL_TREE;
+  if (OVERLOAD_TYPE_P (node))
+    tags = lookup_attribute ("abi_tag", TYPE_ATTRIBUTES (type));
   /* Now check the list of available substitutions for this mangling
      operation.  */
-  for (i = 0; i < size; ++i)
+  if (!abbr || tags) for (i = 0; i < size; ++i)
     {
       tree candidate = (*G.substitutions)[i];
       /* NODE is a matched to a candidate if it's the same decl node or
@@ -630,8 +616,19 @@ find_substitution (tree node)
 	}
     }
 
+  if (!abbr)
     /* No substitution found.  */
     return 0;
+
+  write_string (abbr);
+  if (tags)
+    {
+      /* If there are ABI tags on the abbreviation, it becomes
+	 a substitution candidate.  */
+      write_abi_tags (tags);
+      add_substitution (node);
+    }
+  return 1;
 }
 
 

gcc/testsuite/g++.dg/abi/abi-tag9.C

@@ -0,0 +1,11 @@
+// { dg-final { scan-assembler "_Z1fSsB3fooS_" } }
+
+namespace std {
+  template <class T> struct char_traits {};
+  template <class T> struct allocator {};
+  template <class T, class U, class V>
+  struct __attribute ((abi_tag ("foo"))) basic_string { };
+  typedef basic_string<char,char_traits<char>,allocator<char> > string;
+}
+
+void f(std::string,std::string) {}

libiberty/ChangeLog

@@ -1,3 +1,7 @@
+2014-09-26  Jason Merrill  <jason@redhat.com>
+
+	* cp-demangle.c (d_substitution): Handle abi tags on abbreviation.
+
 2014-09-26  Max Ostapenko  <m.ostapenko@partner.samsung.com>
 
 	* pex-common.h (struct pex_funcs): Add new parameter for open_write field.

libiberty/cp-demangle.c

@@ -3687,6 +3687,7 @@ d_substitution (struct d_info *di, int prefix)
 	    {
 	      const char *s;
 	      int len;
+	      struct demangle_component *c;
 
 	      if (p->set_last_name != NULL)
 		di->last_name = d_make_sub (di, p->set_last_name,
@@ -3702,7 +3703,15 @@ d_substitution (struct d_info *di, int prefix)
 		  len = p->simple_len;
 		}
 	      di->expansion += len;
-	      return d_make_sub (di, s, len);
+	      c = d_make_sub (di, s, len);
+	      if (d_peek_char (di) == 'B')
+		{
+		  /* If there are ABI tags on the abbreviation, it becomes
+		     a substitution candidate.  */
+		  c = d_abi_tags (di, c);
+		  d_add_substitution (di, c);
+		}
+	      return c;
 	    }
 	}
 

libiberty/testsuite/demangle-expected

@@ -4353,3 +4353,6 @@ xxx
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
+--format=gnu-v3
+_Z1fSsB3fooS_
+f(std::string[abi:foo], std::string[abi:foo])