h8300.h (OK_FOR_U): (const (plus (symbol_ref) (const_int))) is a valid U operand if...

        * h8300/h8300.h (OK_FOR_U): (const (plus (symbol_ref) (const_int)))
        is a valid U operand if SYMBOL_REF_FLAG is set on the
        SYMBOL_REF.
        * h8300/h8300.md (memory btst patterns): New patterns.

From-SVN: r11954

gcc/config/h8300/h8300.h

@@ -791,7 +791,12 @@ struct rtx_def *function_arg();
    || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG \
        && REG_OK_FOR_BASE_P (XEXP (OP, 0)))  \
    || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == SYMBOL_REF \
-       && SYMBOL_REF_FLAG (XEXP (OP, 0))))
+       && SYMBOL_REF_FLAG (XEXP (OP, 0))) \
+   || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == CONST \
+       && GET_CODE (XEXP (XEXP (OP, 0), 0)) == PLUS \
+       && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 0)) == SYMBOL_REF \
+       && SYMBOL_REF_FLAG (XEXP (XEXP (XEXP (OP, 0), 0), 0)) \
+       && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 1)) == CONST_INT))
  
 #define EXTRA_CONSTRAINT(OP, C) \
  ((C) == 'U' ? OK_FOR_U (OP) : 0)

gcc/config/h8300/h8300.md

@@ -453,6 +453,33 @@
 ;; ----------------------------------------------------------------------
 
 (define_insn ""
+  [(set (cc0) (zero_extract:QI (match_operand:QI 0 "memory_operand" "U")
+			       (const_int 1)
+			       (match_operand:QI 1 "const_int_operand" "n")))]
+  ""
+  "btst	%Z1,%R0"
+  [(set_attr "length" "2")
+   (set_attr "cc" "set_zn_c0")])
+
+(define_insn ""
+  [(set (cc0) (zero_extract:HI (match_operand:QI 0 "memory_operand" "U")
+			       (const_int 1)
+			       (match_operand:QI 1 "const_int_operand" "n")))]
+  ""
+  "btst	%Z1,%Y0"
+  [(set_attr "length" "2")
+   (set_attr "cc" "set_zn_c0")])
+
+(define_insn ""
+  [(set (cc0) (zero_extract:SI (match_operand:QI 0 "memory_operand" "U")
+			       (const_int 1)
+			       (match_operand:QI 1 "const_int_operand" "n")))]
+  ""
+  "btst	%Z1,%Y0"
+  [(set_attr "length" "2")
+   (set_attr "cc" "set_zn_c0")])
+
+(define_insn ""
   [(set (cc0) (zero_extract:QI (match_operand:HI 0 "register_operand" "r")
 			       (const_int 1)
 			       (match_operand:HI 1 "const_int_operand" "n")))]