varasm.c (record_constant_1): Record the CODE_LABEL when taking the address of a LABEL_REF.

        * varasm.c (record_constant_1): Record the CODE_LABEL when
        taking the address of a LABEL_REF.

From-SVN: r33517

gcc/ChangeLog

 2000-04-28  Richard Henderson  <rth@cygnus.com>
+
+	* varasm.c (record_constant_1): Record the CODE_LABEL when
+	taking the address of a LABEL_REF.
+
+2000-04-28  Richard Henderson  <rth@cygnus.com>
 	    Jan Hubicka  <jh@suse.cz>
 
 	* calls.c (combine_pending_stack_adjustment_and_call): Return the

gcc/varasm.c

@@ -2867,9 +2867,24 @@ record_constant_1 (exp)
 	/* Record the offset.  */
 	obstack_grow (&permanent_obstack,
 		      (char *) &value.offset, sizeof value.offset);
-	/* Record the symbol name.  */
-	obstack_grow (&permanent_obstack, XSTR (value.base, 0),
-		      strlen (XSTR (value.base, 0)) + 1);
+
+	switch (GET_CODE (value.base))
+	  {
+	  case SYMBOL_REF:
+	    /* Record the symbol name.  */
+	    obstack_grow (&permanent_obstack, XSTR (value.base, 0),
+			  strlen (XSTR (value.base, 0)) + 1);
+	    break;
+	  case LABEL_REF:
+	    /* Record the address of the CODE_LABEL.  It may not have
+	       been emitted yet, so it's UID may be zero.  But pointer
+	       identity is good enough.  */
+	    obstack_grow (&permanent_obstack, &XEXP (value.base, 0),
+			  sizeof (rtx));
+	    break;
+	  default:
+	    abort ();
+	  }
       }
       return;