1 files changed, 68 insertions, 0 deletions
diff --git a/chromium/v8/src/code-stubs.h b/chromium/v8/src/code-stubs.h
index c58acd6b16d..84d9b023b3a 100644
--- a/chromium/v8/src/code-stubs.h
+++ b/chromium/v8/src/code-stubs.h
@@ -40,6 +40,7 @@ namespace internal {
 #define CODE_STUB_LIST_ALL_PLATFORMS(V)  \
   V(CallFunction)                        \
   V(CallConstruct)                       \
+  V(UnaryOp)                             \
   V(BinaryOp)                            \
   V(StringAdd)                           \
   V(SubString)                           \
@@ -592,6 +593,73 @@ class StoreGlobalStub : public HydrogenCodeStub {
 };
 
 
+class UnaryOpStub : public HydrogenCodeStub {
+ public:
+  // Stub without type info available -> construct uninitialized
+  explicit UnaryOpStub(Token::Value operation)
+      : HydrogenCodeStub(UNINITIALIZED), operation_(operation) { }
+  explicit UnaryOpStub(Code::ExtraICState ic_state) :
+      state_(StateBits::decode(ic_state)),
+      operation_(OperatorBits::decode(ic_state)) { }
+
+  virtual void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor);
+
+  virtual Code::Kind GetCodeKind() const { return Code::UNARY_OP_IC; }
+  virtual InlineCacheState GetICState() {
+    if (state_.Contains(GENERIC)) {
+      return MEGAMORPHIC;
+    } else if (state_.IsEmpty()) {
+      return PREMONOMORPHIC;
+    } else {
+      return MONOMORPHIC;
+    }
+  }
+  virtual Code::ExtraICState GetExtraICState() {
+    return OperatorBits::encode(operation_) |
+           StateBits::encode(state_.ToIntegral());
+  }
+
+  Token::Value operation() { return operation_; }
+  Handle<JSFunction> ToJSFunction(Isolate* isolate);
+  Builtins::JavaScript ToJSBuiltin();
+
+  void UpdateStatus(Handle<Object> object);
+  MaybeObject* Result(Handle<Object> object, Isolate* isolate);
+  Handle<Code> GenerateCode();
+  Handle<Type> GetType(Isolate* isolate);
+
+ protected:
+  void PrintState(StringStream* stream);
+  void PrintBaseName(StringStream* stream);
+
+ private:
+  enum UnaryOpType {
+    SMI,
+    HEAP_NUMBER,
+    GENERIC,
+    NUMBER_OF_TYPES
+  };
+
+  class State : public EnumSet<UnaryOpType, byte> {
+   public:
+    State() : EnumSet<UnaryOpType, byte>() { }
+    explicit State(byte bits) : EnumSet<UnaryOpType, byte>(bits) { }
+    void Print(StringStream* stream) const;
+  };
+
+  class StateBits : public BitField<int, 0, NUMBER_OF_TYPES> { };
+  class OperatorBits : public BitField<Token::Value, NUMBER_OF_TYPES, 8> { };
+
+  State state_;
+  Token::Value operation_;
+
+  virtual CodeStub::Major MajorKey() { return UnaryOp; }
+  virtual int NotMissMinorKey() { return GetExtraICState(); }
+};
+
+
 class FastCloneShallowArrayStub : public HydrogenCodeStub {
  public:
   // Maximum length of copied elements array.