* simplify-rtx.c (simplify_gen_subreg): Return null for QUEUED rtxes.

From-SVN: r43933

gcc/ChangeLog

 2001-07-11  Richard Sandiford  <rsandifo@redhat.com>
 
+	* simplify-rtx.c (simplify_gen_subreg): Return null for QUEUED rtxes.
+
+2001-07-11  Richard Sandiford  <rsandifo@redhat.com>
+
 	* config/mips/mips.c (gen_int_relational): Tell the caller not to
 	reverse a branch if a NE comparison is implemented with GTU.
 

gcc/simplify-rtx.c

@@ -2446,6 +2446,9 @@ simplify_gen_subreg (outermode, op, innermode, byte)
       || byte >= GET_MODE_SIZE (innermode))
     abort ();
 
+  if (GET_CODE (op) == QUEUED)
+    return NULL_RTX;
+
   new = simplify_subreg (outermode, op, innermode, byte);
   if (new)
     return new;