Upgrade V8 to 2.4.2

1 files changed, 11 insertions, 354 deletions

diff --git a/deps/v8/src/x64/codegen-x64.h b/deps/v8/src/x64/codegen-x64.h
index 14f690eb8..07bdadf9a 100644
--- a/deps/v8/src/x64/codegen-x64.h
+++ b/deps/v8/src/x64/codegen-x64.h
@@ -492,6 +492,11 @@ class CodeGenerator: public AstVisitor {
   void GenericBinaryOperation(BinaryOperation* expr,
                               OverwriteMode overwrite_mode);
 
+  // Generate a stub call from the virtual frame.
+  Result GenerateGenericBinaryOpStubCall(GenericBinaryOpStub* stub,
+                                         Result* left,
+                                         Result* right);
+
   // Emits code sequence that jumps to a JumpTarget if the inputs
   // are both smis.  Cannot be in MacroAssembler because it takes
   // advantage of TypeInfo to skip unneeded checks.
@@ -586,9 +591,7 @@ class CodeGenerator: public AstVisitor {
   };
   static InlineRuntimeLUT* FindInlineRuntimeLUT(Handle<String> name);
   bool CheckForInlineRuntimeCall(CallRuntime* node);
-  static bool PatchInlineRuntimeEntry(Handle<String> name,
-                                      const InlineRuntimeLUT& new_entry,
-                                      InlineRuntimeLUT* old_entry);
+
   void ProcessDeclarations(ZoneList<Declaration*>* declarations);
 
   static Handle<Code> ComputeCallInitialize(int argc, InLoopFlag in_loop);
@@ -659,6 +662,8 @@ class CodeGenerator: public AstVisitor {
 
   void GenerateRegExpConstructResult(ZoneList<Expression*>* args);
 
+  void GenerateRegExpCloneResult(ZoneList<Expression*>* args);
+
   // Support for fast native caches.
   void GenerateGetFromCache(ZoneList<Expression*>* args);
 
@@ -681,6 +686,9 @@ class CodeGenerator: public AstVisitor {
 
   void GenerateIsRegExpEquivalent(ZoneList<Expression*>* args);
 
+  void GenerateHasCachedArrayIndex(ZoneList<Expression*>* args);
+  void GenerateGetCachedArrayIndex(ZoneList<Expression*>* args);
+
 // Simple condition analysis.
   enum ConditionAnalysis {
     ALWAYS_TRUE,
@@ -750,357 +758,6 @@ class CodeGenerator: public AstVisitor {
 };
 
 
-// Compute a transcendental math function natively, or call the
-// TranscendentalCache runtime function.
-class TranscendentalCacheStub: public CodeStub {
- public:
-  explicit TranscendentalCacheStub(TranscendentalCache::Type type)
-      : type_(type) {}
-  void Generate(MacroAssembler* masm);
- private:
-  TranscendentalCache::Type type_;
-  Major MajorKey() { return TranscendentalCache; }
-  int MinorKey() { return type_; }
-  Runtime::FunctionId RuntimeFunction();
-  void GenerateOperation(MacroAssembler* masm, Label* on_nan_result);
-};
-
-
-class ToBooleanStub: public CodeStub {
- public:
-  ToBooleanStub() { }
-
-  void Generate(MacroAssembler* masm);
-
- private:
-  Major MajorKey() { return ToBoolean; }
-  int MinorKey() { return 0; }
-};
-
-
-// Flag that indicates how to generate code for the stub GenericBinaryOpStub.
-enum GenericBinaryFlags {
-  NO_GENERIC_BINARY_FLAGS = 0,
-  NO_SMI_CODE_IN_STUB = 1 << 0  // Omit smi code in stub.
-};
-
-
-class GenericBinaryOpStub: public CodeStub {
- public:
-  GenericBinaryOpStub(Token::Value op,
-                      OverwriteMode mode,
-                      GenericBinaryFlags flags,
-                      TypeInfo operands_type = TypeInfo::Unknown())
-      : op_(op),
-        mode_(mode),
-        flags_(flags),
-        args_in_registers_(false),
-        args_reversed_(false),
-        static_operands_type_(operands_type),
-        runtime_operands_type_(BinaryOpIC::DEFAULT),
-        name_(NULL) {
-    ASSERT(OpBits::is_valid(Token::NUM_TOKENS));
-  }
-
-  GenericBinaryOpStub(int key, BinaryOpIC::TypeInfo type_info)
-      : op_(OpBits::decode(key)),
-        mode_(ModeBits::decode(key)),
-        flags_(FlagBits::decode(key)),
-        args_in_registers_(ArgsInRegistersBits::decode(key)),
-        args_reversed_(ArgsReversedBits::decode(key)),
-        static_operands_type_(TypeInfo::ExpandedRepresentation(
-            StaticTypeInfoBits::decode(key))),
-        runtime_operands_type_(type_info),
-        name_(NULL) {
-  }
-
-  // Generate code to call the stub with the supplied arguments. This will add
-  // code at the call site to prepare arguments either in registers or on the
-  // stack together with the actual call.
-  void GenerateCall(MacroAssembler* masm, Register left, Register right);
-  void GenerateCall(MacroAssembler* masm, Register left, Smi* right);
-  void GenerateCall(MacroAssembler* masm, Smi* left, Register right);
-
-  Result GenerateCall(MacroAssembler* masm,
-                      VirtualFrame* frame,
-                      Result* left,
-                      Result* right);
-
- private:
-  Token::Value op_;
-  OverwriteMode mode_;
-  GenericBinaryFlags flags_;
-  bool args_in_registers_;  // Arguments passed in registers not on the stack.
-  bool args_reversed_;  // Left and right argument are swapped.
-
-  // Number type information of operands, determined by code generator.
-  TypeInfo static_operands_type_;
-
-  // Operand type information determined at runtime.
-  BinaryOpIC::TypeInfo runtime_operands_type_;
-
-  char* name_;
-
-  const char* GetName();
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("GenericBinaryOpStub %d (op %s), "
-           "(mode %d, flags %d, registers %d, reversed %d, only_numbers %s)\n",
-           MinorKey(),
-           Token::String(op_),
-           static_cast<int>(mode_),
-           static_cast<int>(flags_),
-           static_cast<int>(args_in_registers_),
-           static_cast<int>(args_reversed_),
-           static_operands_type_.ToString());
-  }
-#endif
-
-  // Minor key encoding in 17 bits TTNNNFRAOOOOOOOMM.
-  class ModeBits: public BitField<OverwriteMode, 0, 2> {};
-  class OpBits: public BitField<Token::Value, 2, 7> {};
-  class ArgsInRegistersBits: public BitField<bool, 9, 1> {};
-  class ArgsReversedBits: public BitField<bool, 10, 1> {};
-  class FlagBits: public BitField<GenericBinaryFlags, 11, 1> {};
-  class StaticTypeInfoBits: public BitField<int, 12, 3> {};
-  class RuntimeTypeInfoBits: public BitField<BinaryOpIC::TypeInfo, 15, 2> {};
-
-  Major MajorKey() { return GenericBinaryOp; }
-  int MinorKey() {
-    // Encode the parameters in a unique 18 bit value.
-    return OpBits::encode(op_)
-           | ModeBits::encode(mode_)
-           | FlagBits::encode(flags_)
-           | ArgsInRegistersBits::encode(args_in_registers_)
-           | ArgsReversedBits::encode(args_reversed_)
-           | StaticTypeInfoBits::encode(
-               static_operands_type_.ThreeBitRepresentation())
-           | RuntimeTypeInfoBits::encode(runtime_operands_type_);
-  }
-
-  void Generate(MacroAssembler* masm);
-  void GenerateSmiCode(MacroAssembler* masm, Label* slow);
-  void GenerateLoadArguments(MacroAssembler* masm);
-  void GenerateReturn(MacroAssembler* masm);
-  void GenerateRegisterArgsPush(MacroAssembler* masm);
-  void GenerateTypeTransition(MacroAssembler* masm);
-
-  bool ArgsInRegistersSupported() {
-    return (op_ == Token::ADD) || (op_ == Token::SUB)
-        || (op_ == Token::MUL) || (op_ == Token::DIV);
-  }
-  bool IsOperationCommutative() {
-    return (op_ == Token::ADD) || (op_ == Token::MUL);
-  }
-
-  void SetArgsInRegisters() { args_in_registers_ = true; }
-  void SetArgsReversed() { args_reversed_ = true; }
-  bool HasSmiCodeInStub() { return (flags_ & NO_SMI_CODE_IN_STUB) == 0; }
-  bool HasArgsInRegisters() { return args_in_registers_; }
-  bool HasArgsReversed() { return args_reversed_; }
-
-  bool ShouldGenerateSmiCode() {
-    return HasSmiCodeInStub() &&
-        runtime_operands_type_ != BinaryOpIC::HEAP_NUMBERS &&
-        runtime_operands_type_ != BinaryOpIC::STRINGS;
-  }
-
-  bool ShouldGenerateFPCode() {
-    return runtime_operands_type_ != BinaryOpIC::STRINGS;
-  }
-
-  virtual int GetCodeKind() { return Code::BINARY_OP_IC; }
-
-  virtual InlineCacheState GetICState() {
-    return BinaryOpIC::ToState(runtime_operands_type_);
-  }
-};
-
-class StringHelper : public AllStatic {
- public:
-  // Generate code for copying characters using a simple loop. This should only
-  // be used in places where the number of characters is small and the
-  // additional setup and checking in GenerateCopyCharactersREP adds too much
-  // overhead. Copying of overlapping regions is not supported.
-  static void GenerateCopyCharacters(MacroAssembler* masm,
-                                     Register dest,
-                                     Register src,
-                                     Register count,
-                                     bool ascii);
-
-  // Generate code for copying characters using the rep movs instruction.
-  // Copies rcx characters from rsi to rdi. Copying of overlapping regions is
-  // not supported.
-  static void GenerateCopyCharactersREP(MacroAssembler* masm,
-                                        Register dest,     // Must be rdi.
-                                        Register src,      // Must be rsi.
-                                        Register count,    // Must be rcx.
-                                        bool ascii);
-
-
-  // Probe the symbol table for a two character string. If the string is
-  // not found by probing a jump to the label not_found is performed. This jump
-  // does not guarantee that the string is not in the symbol table. If the
-  // string is found the code falls through with the string in register rax.
-  static void GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm,
-                                                   Register c1,
-                                                   Register c2,
-                                                   Register scratch1,
-                                                   Register scratch2,
-                                                   Register scratch3,
-                                                   Register scratch4,
-                                                   Label* not_found);
-
-  // Generate string hash.
-  static void GenerateHashInit(MacroAssembler* masm,
-                               Register hash,
-                               Register character,
-                               Register scratch);
-  static void GenerateHashAddCharacter(MacroAssembler* masm,
-                                       Register hash,
-                                       Register character,
-                                       Register scratch);
-  static void GenerateHashGetHash(MacroAssembler* masm,
-                                  Register hash,
-                                  Register scratch);
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
-};
-
-
-// Flag that indicates how to generate code for the stub StringAddStub.
-enum StringAddFlags {
-  NO_STRING_ADD_FLAGS = 0,
-  NO_STRING_CHECK_IN_STUB = 1 << 0  // Omit string check in stub.
-};
-
-
-class StringAddStub: public CodeStub {
- public:
-  explicit StringAddStub(StringAddFlags flags) {
-    string_check_ = ((flags & NO_STRING_CHECK_IN_STUB) == 0);
-  }
-
- private:
-  Major MajorKey() { return StringAdd; }
-  int MinorKey() { return string_check_ ? 0 : 1; }
-
-  void Generate(MacroAssembler* masm);
-
-  // Should the stub check whether arguments are strings?
-  bool string_check_;
-};
-
-
-class SubStringStub: public CodeStub {
- public:
-  SubStringStub() {}
-
- private:
-  Major MajorKey() { return SubString; }
-  int MinorKey() { return 0; }
-
-  void Generate(MacroAssembler* masm);
-};
-
-
-class StringCompareStub: public CodeStub {
- public:
-  explicit StringCompareStub() {}
-
-  // Compare two flat ascii strings and returns result in rax after popping two
-  // arguments from the stack.
-  static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
-                                              Register left,
-                                              Register right,
-                                              Register scratch1,
-                                              Register scratch2,
-                                              Register scratch3,
-                                              Register scratch4);
-
- private:
-  Major MajorKey() { return StringCompare; }
-  int MinorKey() { return 0; }
-
-  void Generate(MacroAssembler* masm);
-};
-
-
-class NumberToStringStub: public CodeStub {
- public:
-  NumberToStringStub() { }
-
-  // Generate code to do a lookup in the number string cache. If the number in
-  // the register object is found in the cache the generated code falls through
-  // with the result in the result register. The object and the result register
-  // can be the same. If the number is not found in the cache the code jumps to
-  // the label not_found with only the content of register object unchanged.
-  static void GenerateLookupNumberStringCache(MacroAssembler* masm,
-                                              Register object,
-                                              Register result,
-                                              Register scratch1,
-                                              Register scratch2,
-                                              bool object_is_smi,
-                                              Label* not_found);
-
- private:
-  static void GenerateConvertHashCodeToIndex(MacroAssembler* masm,
-                                             Register hash,
-                                             Register mask);
-
-  Major MajorKey() { return NumberToString; }
-  int MinorKey() { return 0; }
-
-  void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "NumberToStringStub"; }
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("NumberToStringStub\n");
-  }
-#endif
-};
-
-
-class RecordWriteStub : public CodeStub {
- public:
-  RecordWriteStub(Register object, Register addr, Register scratch)
-      : object_(object), addr_(addr), scratch_(scratch) { }
-
-  void Generate(MacroAssembler* masm);
-
- private:
-  Register object_;
-  Register addr_;
-  Register scratch_;
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("RecordWriteStub (object reg %d), (addr reg %d), (scratch reg %d)\n",
-           object_.code(), addr_.code(), scratch_.code());
-  }
-#endif
-
-  // Minor key encoding in 12 bits. 4 bits for each of the three
-  // registers (object, address and scratch) OOOOAAAASSSS.
-  class ScratchBits : public BitField<uint32_t, 0, 4> {};
-  class AddressBits : public BitField<uint32_t, 4, 4> {};
-  class ObjectBits : public BitField<uint32_t, 8, 4> {};
-
-  Major MajorKey() { return RecordWrite; }
-
-  int MinorKey() {
-    // Encode the registers.
-    return ObjectBits::encode(object_.code()) |
-           AddressBits::encode(addr_.code()) |
-           ScratchBits::encode(scratch_.code());
-  }
-};
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODEGEN_X64_H_