VECTOR_TYPE fixes for aliasing, and dwarf2 output.

From-SVN: r38715

gcc/ChangeLog

+2001-01-05  Daniel Berlin  <dberlin@redhat.com>
+
+	* c-common.c (lang_get_alias_set): Say we know nothing of
+	VECTOR_TYPE aliasing. 
+
+	* dwarf2out.c (is_base_type): Handle VECTOR_TYPE properly.
+
 2001-01-05  Bruce Korb  <bkorb@gnu.org>
 
 	* fixinc/mkfixinc.sh(vax-*-bsd): convert exit and atexit calls to

gcc/c-common.c

@@ -5037,7 +5037,11 @@ lang_get_alias_set (t)
      tree t;
 {
   tree u;
-
+  
+  /* We know nothing about vector types */
+  if (TREE_CODE (t) == VECTOR_TYPE)
+    return 0;          
+  
   /* Permit type-punning when accessing a union, provided the access
      is directly through the union.  For example, this code does not
      permit taking the address of a union member and then storing

gcc/dwarf2out.c

@@ -7341,6 +7341,7 @@ is_base_type (type)
     case FILE_TYPE:
     case OFFSET_TYPE:
     case LANG_TYPE:
+    case VECTOR_TYPE:
       return 0;
 
     default: