ARM64: Slightly simplify LShiftI and LShiftS.

src/arm64/lithium-arm64.h

Index: src/arm64/lithium-arm64.h
diff --git a/src/arm64/lithium-arm64.h b/src/arm64/lithium-arm64.h
index 21a5f741417790d1630108cb26b52afcfeacff6f..a5a3eb0b911ef9bfca07e3b730c488e84ebd6136 100644
--- a/src/arm64/lithium-arm64.h
+++ b/src/arm64/lithium-arm64.h
@@ -2733,19 +2733,17 @@ class LShiftI V8_FINAL : public LTemplateInstruction<1, 2, 0> {
 };
 
 
-class LShiftS V8_FINAL : public LTemplateInstruction<1, 2, 1> {
+class LShiftS V8_FINAL : public LTemplateInstruction<1, 2, 0> {
  public:
-  LShiftS(Token::Value op, LOperand* left, LOperand* right, LOperand* temp,
-          bool can_deopt) : op_(op), can_deopt_(can_deopt) {
+  LShiftS(Token::Value op, LOperand* left, LOperand* right, bool can_deopt)
+      : op_(op), can_deopt_(can_deopt) {
     inputs_[0] = left;
     inputs_[1] = right;
-    temps_[0] = temp;
   }
 
   Token::Value op() const { return op_; }
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
   bool can_deopt() const { return can_deopt_; }
 
   DECLARE_CONCRETE_INSTRUCTION(ShiftS, "shift-s")