*** empty log message ***

From-SVN: r633

diff --git a/gcc/c-common.c b/gcc/c-common.c
index a65a49c81a433c1970af993190a063f2bae9dff3..751fe33b9652982c9bd3587389e68e14d9f53ef0 100644 (file)
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -147,9 +147,41 @@ decl_attributes (decl, attributes)
 {
   tree a;
   for (a = attributes; a; a = TREE_CHAIN (a))
-    if (TREE_VALUE (a) != 0
+    if (TREE_VALUE (a) == get_identifier ("packed"))
+      {
+       if (TREE_CODE (decl) == FIELD_DECL)
+         DECL_PACKED (decl) = 1;
+      }
+    else if (TREE_VALUE (a) != 0
        && TREE_CODE (TREE_VALUE (a)) == TREE_LIST
-       && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("aligned"))
+       && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("mode"))
+      {
+       int i;
+       char *specified_name
+         = IDENTIFIER_POINTER (TREE_VALUE (TREE_VALUE (a)));
+
+       /* Give this decl a type with the specified mode.  */
+       for (i = 0; i < NUM_MACHINE_MODES; i++)
+         if (!strcmp (specified_name, GET_MODE_NAME (i)))
+           {
+             tree type
+               = type_for_size (GET_MODE_BITSIZE (i),
+                                TREE_UNSIGNED (TREE_TYPE (decl)));
+             if (type != 0)
+               {
+                 TREE_TYPE (decl) = type;
+                 DECL_SIZE (decl) = 0;
+                 layout_decl (decl);
+               }
+             else
+               error ("no data type for mode `%s'", specified_name);
+           }
+       if (i == NUM_MACHINE_MODES)
+         error ("unknown machine mode `%s'", specified_name);
+      }
+    else if (TREE_VALUE (a) != 0
+            && TREE_CODE (TREE_VALUE (a)) == TREE_LIST
+            && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("aligned"))
       {
        int align = TREE_INT_CST_LOW (TREE_VALUE (TREE_VALUE (a)))
                    * BITS_PER_UNIT;
@@ -161,26 +193,12 @@ decl_attributes (decl, attributes)
                 && TREE_CODE (decl) != FIELD_DECL)
          warning_with_decl (decl,
                "alignment specified for `%s' which is not a variable");
-
-       /* ??? The maximum alignment gcc can currently handle is 16 bytes!
-          We should change the representation to be the log of the
-          actual alignment since we only handle powers of 2 anyway.  */
-       else if (align > 255)
-         warning_with_decl (decl,
-               "requested alignment of `%s' exceeds compiler limits");
        else
          DECL_ALIGN (decl) = align;
       }
     else if (TREE_VALUE (a) != 0
             && TREE_CODE (TREE_VALUE (a)) == TREE_LIST
-            && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("packed"))
-      {
-       if (TREE_CODE (decl) == FIELD_DECL)
-         DECL_PACKED (decl) = 1;
-      }
-    else if (TREE_VALUE (a) != 0
-       && TREE_CODE (TREE_VALUE (a)) == TREE_LIST
-       && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("format"))
+            && TREE_PURPOSE (TREE_VALUE (a)) == get_identifier ("format"))
       {
         tree list = TREE_VALUE (TREE_VALUE (a));
         tree format_type = TREE_PURPOSE (list);