A64: Synchronize with r19001.

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 72 matching lines @@
   V(InternalArrayNoArgumentConstructor)  \
   V(InternalArraySingleArgumentConstructor)      \
   V(InternalArrayNArgumentsConstructor)  \
   V(KeyedStoreElement)                   \
   V(DebuggerStatement)                   \
   V(NameDictionaryLookup)                \
   V(ElementsTransitionAndStore)          \
   V(TransitionElementsKind)              \
   V(StoreArrayLiteralElement)            \
   V(StubFailureTrampoline)               \
-  V(StubFailureTailCallTrampoline)       \
   V(ArrayConstructor)                    \
   V(InternalArrayConstructor)            \
   V(ProfileEntryHook)                    \
   V(StoreGlobal)                         \
   V(CallApiFunction)                     \
+  V(CallApiGetter)                       \
   /* IC Handler stubs */                 \
   V(LoadField)                           \
-  V(KeyedLoadField)                      \
-  V(KeyedArrayCall)
+  V(KeyedLoadField)
 
 // List of code stubs only used on ARM platforms.
 #if V8_TARGET_ARCH_ARM
 #define CODE_STUB_LIST_ARM(V)  \
   V(GetProperty)               \
   V(SetProperty)               \
   V(InvokeBuiltin)             \
   V(DirectCEntry)
 #elif V8_TARGET_ARCH_A64
 #define CODE_STUB_LIST_ARM(V)  \
@@ skipping 49 matching lines @@
   // Gets the major key from a code object that is a code stub or binary op IC.
   static Major GetMajorKey(Code* code_stub) {
     return static_cast<Major>(code_stub->major_key());
   }
 
   static const char* MajorName(Major major_key, bool allow_unknown_keys);
 
   virtual ~CodeStub() {}
 
   static void GenerateStubsAheadOfTime(Isolate* isolate);
-  static void GenerateStubsRequiringBuiltinsAheadOfTime(Isolate* isolate);
   static void GenerateFPStubs(Isolate* isolate);
 
   // Some stubs put untagged junk on the stack that cannot be scanned by the
   // GC.  This means that we must be statically sure that no GC can occur while
   // they are running.  If that is the case they should override this to return
   // true, which will cause an assertion if we try to call something that can
   // GC or if we try to put a stack frame on top of the junk, which would not
   // result in a traversable stack.
   virtual bool SometimesSetsUpAFrame() { return true; }
 
@@ skipping 90 matching lines @@
 
  protected:
   // Generates the assembler code for the stub.
   virtual void Generate(MacroAssembler* masm) = 0;
 };
 
 
 enum StubFunctionMode { NOT_JS_FUNCTION_STUB_MODE, JS_FUNCTION_STUB_MODE };
 enum HandlerArgumentsMode { DONT_PASS_ARGUMENTS, PASS_ARGUMENTS };
 
-enum ContinuationType { NORMAL_CONTINUATION, TAIL_CALL_CONTINUATION };
-
-
 struct CodeStubInterfaceDescriptor {
   CodeStubInterfaceDescriptor();
   int register_param_count_;
 
   Register stack_parameter_count_;
   // if hint_stack_parameter_count_ > 0, the code stub can optimize the
   // return sequence. Default value is -1, which means it is ignored.
   int hint_stack_parameter_count_;
-  ContinuationType continuation_type_;
   StubFunctionMode function_mode_;
   Register* register_params_;
 
   Address deoptimization_handler_;
   HandlerArgumentsMode handler_arguments_mode_;
 
   bool initialized() const { return register_param_count_ >= 0; }
 
-  bool HasTailCallContinuation() const {
-    return continuation_type_ == TAIL_CALL_CONTINUATION;
-  }
-
   int environment_length() const {
     return register_param_count_;
   }
 
   void SetMissHandler(ExternalReference handler) {
     miss_handler_ = handler;
     has_miss_handler_ = true;
     // Our miss handler infrastructure doesn't currently support
     // variable stack parameter counts.
     ASSERT(!stack_parameter_count_.is_valid());
@@ skipping 728 matching lines @@
   class RestoreContextBits: public BitField<bool, 0, 1> {};
   class CallDataUndefinedBits: public BitField<bool, 1, 1> {};
   class ArgumentBits: public BitField<int, 2, Code::kArgumentsBits> {};
 
   int bit_field_;
 
   DISALLOW_COPY_AND_ASSIGN(CallApiFunctionStub);
 };
 
 
+class CallApiGetterStub : public PlatformCodeStub {
+ public:
+  CallApiGetterStub() {}
+
+ private:
+  virtual void Generate(MacroAssembler* masm) V8_OVERRIDE;
+  virtual Major MajorKey() V8_OVERRIDE { return CallApiGetter; }
+  virtual int MinorKey() V8_OVERRIDE { return 0; }
+
+  DISALLOW_COPY_AND_ASSIGN(CallApiGetterStub);
+};
+
+
 class KeyedLoadFieldStub: public LoadFieldStub {
  public:
   KeyedLoadFieldStub(bool inobject, int index, Representation representation)
       : LoadFieldStub() {
     Initialize(Code::KEYED_LOAD_IC, inobject, index, representation);
   }
 
   virtual void InitializeInterfaceDescriptor(
-      Isolate* isolate,
-      CodeStubInterfaceDescriptor* descriptor);
-
-  virtual Handle<Code> GenerateCode(Isolate* isolate);
-
- private:
-  virtual CodeStub::Major MajorKey() { return KeyedLoadField; }
-};
-
-
-class KeyedArrayCallStub: public HICStub {
- public:
-  KeyedArrayCallStub(bool holey, int argc) : HICStub(), argc_(argc) {
-    bit_field_ = HoleyBits::encode(holey);
-  }
-
-  virtual Code::Kind kind() const { return Code::KEYED_CALL_IC; }
-  virtual ExtraICState GetExtraICState() { return bit_field_; }
-
-  ElementsKind elements_kind() {
-    return HoleyBits::decode(bit_field_) ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS;
-  }
-
-  int argc() { return argc_; }
-  virtual int GetStubFlags() { return argc(); }
-
-  static bool IsHoley(Handle<Code> code) {
-    ExtraICState state = code->extra_ic_state();
-    return HoleyBits::decode(state);
-  }
-
-  virtual void InitializeInterfaceDescriptor(
       Isolate* isolate,
       CodeStubInterfaceDescriptor* descriptor);
 
   virtual Handle<Code> GenerateCode(Isolate* isolate);
 
  private:
-  virtual int NotMissMinorKey() {
-    return GetExtraICState() | ArgcBits::encode(argc_);
-  }
-
-  class HoleyBits: public BitField<bool, 0, 1> {};
-  STATIC_ASSERT(Code::kArgumentsBits <= kStubMinorKeyBits - 1);
-  class ArgcBits: public BitField<int, 1, Code::kArgumentsBits> {};
-  virtual CodeStub::Major MajorKey() { return KeyedArrayCall; }
-  int bit_field_;
-  int argc_;
+  virtual CodeStub::Major MajorKey() { return KeyedLoadField; }
 };
 
 
 class BinaryOpICStub : public HydrogenCodeStub {
  public:
   BinaryOpICStub(Token::Value op, OverwriteMode mode)
       : HydrogenCodeStub(UNINITIALIZED), state_(op, mode) {}
 
   explicit BinaryOpICStub(const BinaryOpIC::State& state) : state_(state) {}
 
@@ skipping 520 matching lines @@
     return ArgcBits::decode(minor_key);
   }
 
  private:
   int argc_;
   CallFunctionFlags flags_;
 
   virtual void PrintName(StringStream* stream);
 
   // Minor key encoding in 32 bits with Bitfield <Type, shift, size>.
-  class FlagBits: public BitField<CallFunctionFlags, 0, 1> {};
-  class ArgcBits: public BitField<unsigned, 1, 32 - 1> {};
+  class FlagBits: public BitField<CallFunctionFlags, 0, 2> {};
+  class ArgcBits: public BitField<unsigned, 2, 32 - 2> {};
 
   Major MajorKey() { return CallFunction; }
   int MinorKey() {
     // Encode the parameters in a unique 32 bit value.
     return FlagBits::encode(flags_) | ArgcBits::encode(argc_);
   }
 
   bool RecordCallTarget() {
-    return (flags_ & RECORD_CALL_TARGET) != 0;
+    return flags_ == RECORD_CALL_TARGET;
+  }
+
+  bool CallAsMethod() {
+    return flags_ == CALL_AS_METHOD || flags_ == WRAP_AND_CALL;
+  }
+
+  bool NeedsChecks() {
+    return flags_ != WRAP_AND_CALL;
   }
 };
 
 
 class CallConstructStub: public PlatformCodeStub {
  public:
   explicit CallConstructStub(CallFunctionFlags flags) : flags_(flags) {}
 
   void Generate(MacroAssembler* masm);
 
   virtual void FinishCode(Handle<Code> code) {
     code->set_has_function_cache(RecordCallTarget());
   }
 
  private:
   CallFunctionFlags flags_;
 
   virtual void PrintName(StringStream* stream);
 
   Major MajorKey() { return CallConstruct; }
   int MinorKey() { return flags_; }
 
   bool RecordCallTarget() {
     return (flags_ & RECORD_CALL_TARGET) != 0;
   }
+
+  bool CallAsMethod() {
+    return (flags_ & CALL_AS_METHOD) != 0;
+  }
 };
 
 
 enum StringIndexFlags {
   // Accepts smis or heap numbers.
   STRING_INDEX_IS_NUMBER,
 
   // Accepts smis or heap numbers that are valid array indices
   // (ECMA-262 15.4). Invalid indices are reported as being out of
   // range.
@@ skipping 805 matching lines @@
 
   void Generate(MacroAssembler* masm);
 
   bool fp_registers_;
   StubFunctionMode function_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(StubFailureTrampolineStub);
 };
 
 
-class StubFailureTailCallTrampolineStub : public PlatformCodeStub {
- public:
-  StubFailureTailCallTrampolineStub() : fp_registers_(CanUseFPRegisters()) {}
-
-  static void GenerateAheadOfTime(Isolate* isolate);
-
- private:
-  class FPRegisters: public BitField<bool, 0, 1> {};
-  Major MajorKey() { return StubFailureTailCallTrampoline; }
-  int MinorKey() { return FPRegisters::encode(fp_registers_); }
-
-  void Generate(MacroAssembler* masm);
-
-  bool fp_registers_;
-
-  DISALLOW_COPY_AND_ASSIGN(StubFailureTailCallTrampolineStub);
-};
-
-
 class ProfileEntryHookStub : public PlatformCodeStub {
  public:
   explicit ProfileEntryHookStub() {}
 
   // The profile entry hook function is not allowed to cause a GC.
   virtual bool SometimesSetsUpAFrame() { return false; }
 
   // Generates a call to the entry hook if it's enabled.
   static void MaybeCallEntryHook(MacroAssembler* masm);
 
@@ skipping 12 matching lines @@
 
 
 class CallDescriptors {
  public:
   static void InitializeForIsolate(Isolate* isolate);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_