Hydrogen code stubs for vector-based ICs.

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 c646380eab274b3be7a83592f337cb48d7dd0ca0..424ecba12da33bddd55ba3f2af9f92a6886d379d 100644
--- a/src/arm64/lithium-arm64.h
+++ b/src/arm64/lithium-arm64.h
@@ -320,19 +320,23 @@ class LTemplateInstruction : public LTemplateResultInstruction<R> {
 
 
 class LTailCallThroughMegamorphicCache FINAL
-    : public LTemplateInstruction<0, 3, 0> {
+    : public LTemplateInstruction<0, 5, 0> {
  public:
-  explicit LTailCallThroughMegamorphicCache(LOperand* context,
-                                            LOperand* receiver,
-                                            LOperand* name) {
+  LTailCallThroughMegamorphicCache(LOperand* context, LOperand* receiver,
+                                   LOperand* name, LOperand* slot,
+                                   LOperand* vector) {
     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")
@@ -1539,9 +1543,10 @@ class LCallWithDescriptor FINAL : public LTemplateResultInstruction<1> {
 
   CallInterfaceDescriptor descriptor() { return descriptor_; }
 
+  DECLARE_HYDROGEN_ACCESSOR(CallWithDescriptor)
+
  private:
   DECLARE_CONCRETE_INSTRUCTION(CallWithDescriptor, "call-with-descriptor")
-  DECLARE_HYDROGEN_ACCESSOR(CallWithDescriptor)
 
   void PrintDataTo(StringStream* stream) OVERRIDE;