--- a/gcc/config/alpha/predicates.md	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/config/alpha/predicates.md	Thu Oct 25 07:37:49 2018 +0900
@@ -1,5 +1,5 @@
 ;; Predicate definitions for DEC Alpha.
-;; Copyright (C) 2004-2017 Free Software Foundation, Inc.
+;; Copyright (C) 2004-2018 Free Software Foundation, Inc.
 ;;
 ;; This file is part of GCC.
 ;;
@@ -74,6 +74,16 @@
   (and (match_code "const_int,const_wide_int,const_double,const_vector")
        (not (match_test "op == CONST0_RTX (mode)"))))
 
+;; Return 1 if OP is the constant 1, 2 or 3.
+(define_predicate "const123_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (INTVAL (op), 1, 3)")))
+
+;; Return 1 if OP is the constant 2 or 3.
+(define_predicate "const23_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) == 2 || INTVAL (op) == 3")))
+
 ;; Return 1 if OP is the constant 4 or 8.
 (define_predicate "const48_operand"
   (and (match_code "const_int")