Hydrogen code stubs for vector-based ICs.

src/x64/lithium-x64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_X64_LITHIUM_X64_H_
 #define V8_X64_LITHIUM_X64_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium.h"
 #include "src/lithium-allocator.h"
@@ skipping 462 matching lines @@
   }
 
   LOperand* context() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(CallStub, "call-stub")
   DECLARE_HYDROGEN_ACCESSOR(CallStub)
 };
 
 
 class LTailCallThroughMegamorphicCache FINAL
-    : public LTemplateInstruction<0, 3, 0> {
+    : public LTemplateInstruction<0, 5, 0> {
  public:
   explicit LTailCallThroughMegamorphicCache(LOperand* context,
-                                            LOperand* receiver,
-                                            LOperand* name) {
+                                            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")
   DECLARE_HYDROGEN_ACCESSOR(TailCallThroughMegamorphicCache)
 };
 
 
 class LUnknownOSRValue FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
   bool HasInterestingComment(LCodeGen* gen) const OVERRIDE { return false; }
@@ skipping 2356 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_