[PATCH] Fix undefined behaviour in rl78 port

[PATCH] Fix undefined behaviour in rl78 port
        * config/rl78/rl78-expand.md (movqi): Fix undefined left shift
        behaviour.

From-SVN: r228252

gcc/ChangeLog

 2015-09-29  Jeff Law  <law@redhat.com>
 
+	* config/rl78/rl78-expand.md (movqi): Fix undefined left shift
+	behaviour.
+
 	* config/msp430/msp430.c (msp430_legitimate_constant): Fix undefined
 	left shift behaviour.
 	* config/msp430/constraints.md ('L' constraint): Similarly.

gcc/config/rl78/rl78-expand.md

@@ -48,7 +48,7 @@
 	&& ! REG_P (operands[0]))
 	operands[1] = copy_to_mode_reg (QImode, operands[1]);
 
-    if (CONST_INT_P (operands[1]) && ! IN_RANGE (INTVAL (operands[1]), (-1 << 8) + 1, (1 << 8) - 1))
+    if (CONST_INT_P (operands[1]) && ! IN_RANGE (INTVAL (operands[1]), (HOST_WIDE_INT_M1U << 8) + 1, (1 << 8) - 1))
       FAIL;
   }
 )