Add partially-implemented TypeRecordingBinaryOpStub to x64 platform.

Review URL: http://codereview.chromium.org/6084010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6177 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ia32/code-stubs-ia32.cc

@@ -1772,7 +1772,6 @@ void TypeRecordingBinaryOpStub::GenerateSmiStub(MacroAssembler* masm) {
 }
 
 
-
 void TypeRecordingBinaryOpStub::GenerateStringStub(MacroAssembler* masm) {
   Label call_runtime;
   ASSERT(operands_type_ == TRBinaryOpIC::STRING);

src/ia32/code-stubs-ia32.h

@@ -250,13 +250,6 @@ class TypeRecordingBinaryOpStub: public CodeStub {
         result_type_(result_type),
         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);
-
  private:
   enum SmiCodeGenerateHeapNumberResults {
     ALLOW_HEAPNUMBER_RESULTS,
@@ -321,10 +314,6 @@ class TypeRecordingBinaryOpStub: public CodeStub {
   void GenerateTypeTransition(MacroAssembler* masm);
   void GenerateTypeTransitionWithSavedArgs(MacroAssembler* masm);
 
-  bool IsOperationCommutative() {
-    return (op_ == Token::ADD) || (op_ == Token::MUL);
-  }
-
   virtual int GetCodeKind() { return Code::TYPE_RECORDING_BINARY_OP_IC; }
 
   virtual InlineCacheState GetICState() {

src/x64/code-stubs-x64.cc

@@ -988,8 +988,195 @@ Handle<Code> GetBinaryOpStub(int key, BinaryOpIC::TypeInfo type_info) {
 Handle<Code> GetTypeRecordingBinaryOpStub(int key,
     TRBinaryOpIC::TypeInfo type_info,
     TRBinaryOpIC::TypeInfo result_type_info) {
+  TypeRecordingBinaryOpStub stub(key, type_info, result_type_info);
+  return stub.GetCode();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateTypeTransition(MacroAssembler* masm) {
+  __ pop(rcx);  // Save return address.
+  __ push(rdx);
+  __ push(rax);
+  // Left and right arguments are now on top.
+  // Push this stub's key. Although the operation and the type info are
+  // encoded into the key, the encoding is opaque, so push them too.
+  __ Push(Smi::FromInt(MinorKey()));
+  __ Push(Smi::FromInt(op_));
+  __ Push(Smi::FromInt(operands_type_));
+
+  __ push(rcx);  // Push return address.
+
+  // Patch the caller to an appropriate specialized stub and return the
+  // operation result to the caller of the stub.
+  __ TailCallExternalReference(
+      ExternalReference(IC_Utility(IC::kTypeRecordingBinaryOp_Patch)),
+      5,
+      1);
+}
+
+
+// Prepare for a type transition runtime call when the args are already on
+// the stack, under the return address.
+void TypeRecordingBinaryOpStub::GenerateTypeTransitionWithSavedArgs(
+    MacroAssembler* masm) {
+  __ pop(rcx);  // Save return address.
+  // Left and right arguments are already on top of the stack.
+  // Push this stub's key. Although the operation and the type info are
+  // encoded into the key, the encoding is opaque, so push them too.
+  __ Push(Smi::FromInt(MinorKey()));
+  __ Push(Smi::FromInt(op_));
+  __ Push(Smi::FromInt(operands_type_));
+
+  __ push(rcx);  // Push return address.
+
+  // Patch the caller to an appropriate specialized stub and return the
+  // operation result to the caller of the stub.
+  __ TailCallExternalReference(
+      ExternalReference(IC_Utility(IC::kTypeRecordingBinaryOp_Patch)),
+      5,
+      1);
+}
+
+
+void TypeRecordingBinaryOpStub::Generate(MacroAssembler* masm) {
+  switch (operands_type_) {
+    case TRBinaryOpIC::UNINITIALIZED:
+      GenerateTypeTransition(masm);
+      break;
+    case TRBinaryOpIC::SMI:
+      GenerateSmiStub(masm);
+      break;
+    case TRBinaryOpIC::INT32:
+      GenerateInt32Stub(masm);
+      break;
+    case TRBinaryOpIC::HEAP_NUMBER:
+      GenerateHeapNumberStub(masm);
+      break;
+    case TRBinaryOpIC::STRING:
+      GenerateStringStub(masm);
+      break;
+    case TRBinaryOpIC::GENERIC:
+      GenerateGeneric(masm);
+      break;
+    default:
+      UNREACHABLE();
+  }
+}
+
+
+const char* TypeRecordingBinaryOpStub::GetName() {
+  if (name_ != NULL) return name_;
+  const int kMaxNameLength = 100;
+  name_ = Bootstrapper::AllocateAutoDeletedArray(kMaxNameLength);
+  if (name_ == NULL) return "OOM";
+  const char* op_name = Token::Name(op_);
+  const char* overwrite_name;
+  switch (mode_) {
+    case NO_OVERWRITE: overwrite_name = "Alloc"; break;
+    case OVERWRITE_RIGHT: overwrite_name = "OverwriteRight"; break;
+    case OVERWRITE_LEFT: overwrite_name = "OverwriteLeft"; break;
+    default: overwrite_name = "UnknownOverwrite"; break;
+  }
+
+  OS::SNPrintF(Vector<char>(name_, kMaxNameLength),
+               "TypeRecordingBinaryOpStub_%s_%s_%s",
+               op_name,
+               overwrite_name,
+               TRBinaryOpIC::GetName(operands_type_));
+  return name_;
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateSmiCode(MacroAssembler* masm,
+    Label* slow,
+    SmiCodeGenerateHeapNumberResults allow_heapnumber_results) {
+  UNIMPLEMENTED();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateSmiStub(MacroAssembler* masm) {
+  Label call_runtime;
+
+  switch (op_) {
+    case Token::ADD:
+    case Token::SUB:
+    case Token::MUL:
+    case Token::DIV:
+      break;
+    case Token::MOD:
+    case Token::BIT_OR:
+    case Token::BIT_AND:
+    case Token::BIT_XOR:
+    case Token::SAR:
+    case Token::SHL:
+    case Token::SHR:
+      GenerateRegisterArgsPush(masm);
+      break;
+    default:
+      UNREACHABLE();
+  }
+
+  if (result_type_ == TRBinaryOpIC::UNINITIALIZED ||
+      result_type_ == TRBinaryOpIC::SMI) {
+    GenerateSmiCode(masm, &call_runtime, NO_HEAPNUMBER_RESULTS);
+  } else {
+    GenerateSmiCode(masm, &call_runtime, ALLOW_HEAPNUMBER_RESULTS);
+  }
+  __ bind(&call_runtime);
+  switch (op_) {
+    case Token::ADD:
+    case Token::SUB:
+    case Token::MUL:
+    case Token::DIV:
+      GenerateTypeTransition(masm);
+      break;
+    case Token::MOD:
+    case Token::BIT_OR:
+    case Token::BIT_AND:
+    case Token::BIT_XOR:
+    case Token::SAR:
+    case Token::SHL:
+    case Token::SHR:
+      GenerateTypeTransitionWithSavedArgs(masm);
+      break;
+    default:
+      UNREACHABLE();
+  }
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateStringStub(MacroAssembler* masm) {
+  UNIMPLEMENTED();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateInt32Stub(MacroAssembler* masm) {
+  UNIMPLEMENTED();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateHeapNumberStub(MacroAssembler* masm) {
   UNIMPLEMENTED();
-  return Handle<Code>::null();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateGeneric(MacroAssembler* masm) {
+  UNIMPLEMENTED();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateHeapResultAllocation(
+    MacroAssembler* masm,
+    Label* alloc_failure) {
+  UNIMPLEMENTED();
+}
+
+
+void TypeRecordingBinaryOpStub::GenerateRegisterArgsPush(MacroAssembler* masm) {
+  __ pop(rcx);
+  __ push(rdx);
+  __ push(rax);
+  __ push(rcx);
 }
 
 

src/x64/code-stubs-x64.h

@@ -131,7 +131,7 @@ class GenericBinaryOpStub: public CodeStub {
 #ifdef DEBUG
   void Print() {
     PrintF("GenericBinaryOpStub %d (op %s), "
-           "(mode %d, flags %d, registers %d, reversed %d, only_numbers %s)\n",
+           "(mode %d, flags %d, registers %d, reversed %d, type_info %s)\n",
            MinorKey(),
            Token::String(op_),
            static_cast<int>(mode_),
@@ -200,6 +200,104 @@ class GenericBinaryOpStub: public CodeStub {
   friend class CodeGenerator;
 };
 
+
+class TypeRecordingBinaryOpStub: public CodeStub {
+ public:
+  TypeRecordingBinaryOpStub(Token::Value op, OverwriteMode mode)
+      : op_(op),
+        mode_(mode),
+        operands_type_(TRBinaryOpIC::UNINITIALIZED),
+        result_type_(TRBinaryOpIC::UNINITIALIZED),
+        name_(NULL) {
+    ASSERT(OpBits::is_valid(Token::NUM_TOKENS));
+  }
+
+  TypeRecordingBinaryOpStub(
+      int key,
+      TRBinaryOpIC::TypeInfo operands_type,
+      TRBinaryOpIC::TypeInfo result_type = TRBinaryOpIC::UNINITIALIZED)
+      : op_(OpBits::decode(key)),
+        mode_(ModeBits::decode(key)),
+        operands_type_(operands_type),
+        result_type_(result_type),
+        name_(NULL) { }
+
+ private:
+  enum SmiCodeGenerateHeapNumberResults {
+    ALLOW_HEAPNUMBER_RESULTS,
+    NO_HEAPNUMBER_RESULTS
+  };
+
+  Token::Value op_;
+  OverwriteMode mode_;
+
+  // Operand type information determined at runtime.
+  TRBinaryOpIC::TypeInfo operands_type_;
+  TRBinaryOpIC::TypeInfo result_type_;
+
+  char* name_;
+
+  const char* GetName();
+
+#ifdef DEBUG
+  void Print() {
+    PrintF("TypeRecordingBinaryOpStub %d (op %s), "
+           "(mode %d, runtime_type_info %s)\n",
+           MinorKey(),
+           Token::String(op_),
+           static_cast<int>(mode_),
+           TRBinaryOpIC::GetName(operands_type_));
+  }
+#endif
+
+  // Minor key encoding in 15 bits RRRTTTOOOOOOOMM.
+  class ModeBits: public BitField<OverwriteMode, 0, 2> {};
+  class OpBits: public BitField<Token::Value, 2, 7> {};
+  class OperandTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 9, 3> {};
+  class ResultTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 12, 3> {};
+
+  Major MajorKey() { return TypeRecordingBinaryOp; }
+  int MinorKey() {
+    return OpBits::encode(op_)
+           | ModeBits::encode(mode_)
+           | OperandTypeInfoBits::encode(operands_type_)
+           | ResultTypeInfoBits::encode(result_type_);
+  }
+
+  void Generate(MacroAssembler* masm);
+  void GenerateGeneric(MacroAssembler* masm);
+  void GenerateSmiCode(MacroAssembler* masm,
+                       Label* slow,
+                       SmiCodeGenerateHeapNumberResults heapnumber_results);
+  void GenerateLoadArguments(MacroAssembler* masm);
+  void GenerateReturn(MacroAssembler* masm);
+  void GenerateUninitializedStub(MacroAssembler* masm);
+  void GenerateSmiStub(MacroAssembler* masm);
+  void GenerateInt32Stub(MacroAssembler* masm);
+  void GenerateHeapNumberStub(MacroAssembler* masm);
+  void GenerateStringStub(MacroAssembler* masm);
+  void GenerateGenericStub(MacroAssembler* masm);
+
+  void GenerateHeapResultAllocation(MacroAssembler* masm, Label* alloc_failure);
+  void GenerateRegisterArgsPush(MacroAssembler* masm);
+  void GenerateTypeTransition(MacroAssembler* masm);
+  void GenerateTypeTransitionWithSavedArgs(MacroAssembler* masm);
+
+  virtual int GetCodeKind() { return Code::TYPE_RECORDING_BINARY_OP_IC; }
+
+  virtual InlineCacheState GetICState() {
+    return TRBinaryOpIC::ToState(operands_type_);
+  }
+
+  virtual void FinishCode(Code* code) {
+    code->set_type_recording_binary_op_type(operands_type_);
+    code->set_type_recording_binary_op_result_type(result_type_);
+  }
+
+  friend class CodeGenerator;
+};
+
+
 class StringHelper : public AllStatic {
  public:
   // Generate code for copying characters using a simple loop. This should only