Remove unnecessary options from HTailCallThroughMegamorphicCache

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index a7a1fe87963a8a503b42ad26f9e39394fa93ed78..fa307cfd3ec9af730a03f7e1b8ab118ff4c49638 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -478,23 +478,19 @@ class LCallStub FINAL : public LTemplateInstruction<1, 1, 0> {
 
 
 class LTailCallThroughMegamorphicCache FINAL
-    : public LTemplateInstruction<0, 5, 0> {
+    : public LTemplateInstruction<0, 3, 0> {
  public:
   explicit LTailCallThroughMegamorphicCache(LOperand* context,
-                                            LOperand* receiver, LOperand* name,
-                                            LOperand* slot, LOperand* vector) {
+                                            LOperand* receiver,
+                                            LOperand* name) {
     inputs_[0] = context;
     inputs_[1] = receiver;
     inputs_[2] = name;
-    inputs_[3] = slot;
-    inputs_[4] = vector;
   }
 
   LOperand* context() { return inputs_[0]; }
   LOperand* receiver() { return inputs_[1]; }
   LOperand* name() { return inputs_[2]; }
-  LOperand* slot() { return inputs_[3]; }
-  LOperand* vector() { return inputs_[4]; }
 
   DECLARE_CONCRETE_INSTRUCTION(TailCallThroughMegamorphicCache,
                                "tail-call-through-megamorphic-cache")