Introduce a code stub version of Array.prototype.push

src/crankshaft/hydrogen-instructions.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_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 #define V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 3839 matching lines @@
   }
 
   class TailCallModeField : public BitField<TailCallMode, 0, 1> {};
   uint32_t bit_field_;
 };
 
 
 class HArgumentsElements final : public HTemplateInstruction<0> {
  public:
   DECLARE_INSTRUCTION_FACTORY_P1(HArgumentsElements, bool);
+  DECLARE_INSTRUCTION_FACTORY_P2(HArgumentsElements, bool, bool);
 
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements)
 
   Representation RequiredInputRepresentation(int index) override {
     return Representation::None();
   }
 
   bool from_inlined() const { return from_inlined_; }
+  bool arguments_adaptor() const { return arguments_adaptor_; }
 
  protected:
   bool DataEquals(HValue* other) override { return true; }
 
  private:
-  explicit HArgumentsElements(bool from_inlined) : from_inlined_(from_inlined) {
+  explicit HArgumentsElements(bool from_inlined, bool arguments_adaptor = true)
+      : from_inlined_(from_inlined), arguments_adaptor_(arguments_adaptor) {
     // The value produced by this instruction is a pointer into the stack
     // that looks as if it was a smi because of alignment.
     set_representation(Representation::Tagged());
     SetFlag(kUseGVN);
   }
 
   bool IsDeletable() const override { return true; }
 
   bool from_inlined_;
+  bool arguments_adaptor_;
 };
 
 
 class HArgumentsLength final : public HUnaryOperation {
  public:
   DECLARE_INSTRUCTION_FACTORY_P1(HArgumentsLength, HValue*);
 
   Representation RequiredInputRepresentation(int index) override {
     return Representation::Tagged();
   }
@@ skipping 1980 matching lines @@
     return HObjectAccess(kInobject,
                          Map::kBitField2Offset,
                          Representation::UInteger8());
   }
 
   static HObjectAccess ForMapBitField3() {
     return HObjectAccess(kInobject, Map::kBitField3Offset,
                          Representation::Integer32());
   }
 
+  static HObjectAccess ForMapDescriptors() {
+    return HObjectAccess(kInobject, Map::kDescriptorsOffset);
+  }
+
   static HObjectAccess ForNameHashField() {
     return HObjectAccess(kInobject,
                          Name::kHashFieldOffset,
                          Representation::Integer32());
   }
 
   static HObjectAccess ForMapInstanceTypeAndBitField() {
     STATIC_ASSERT((Map::kInstanceTypeAndBitFieldOffset & 1) == 0);
     // Ensure the two fields share one 16-bit word, endian-independent.
     STATIC_ASSERT((Map::kBitFieldOffset & ~1) ==
@@ skipping 1698 matching lines @@
 
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_