[Isolates] Merge from bleeding_edge to isolates, revisions 6100-6300.

src/x64/code-stubs-x64.cc

 // Copyright 2010 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 86 matching lines @@
 
   // Get the function from the stack.
   __ movq(rcx, Operand(rsp, 1 * kPointerSize));
 
   // Setup the object header.
   __ LoadRoot(kScratchRegister, Heap::kContextMapRootIndex);
   __ movq(FieldOperand(rax, HeapObject::kMapOffset), kScratchRegister);
   __ Move(FieldOperand(rax, FixedArray::kLengthOffset), Smi::FromInt(length));
 
   // Setup the fixed slots.
-  __ xor_(rbx, rbx);  // Set to NULL.
+  __ Set(rbx, 0);  // Set to NULL.
   __ movq(Operand(rax, Context::SlotOffset(Context::CLOSURE_INDEX)), rcx);
   __ movq(Operand(rax, Context::SlotOffset(Context::FCONTEXT_INDEX)), rax);
   __ movq(Operand(rax, Context::SlotOffset(Context::PREVIOUS_INDEX)), rbx);
   __ movq(Operand(rax, Context::SlotOffset(Context::EXTENSION_INDEX)), rbx);
 
   // Copy the global object from the surrounding context.
   __ movq(rbx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)));
   __ movq(Operand(rax, Context::SlotOffset(Context::GLOBAL_INDEX)), rbx);
 
   // Initialize the rest of the slots to undefined.
@@ skipping 125 matching lines @@
   __ xorpd(xmm0, xmm0);
   __ ucomisd(xmm0, FieldOperand(rax, HeapNumber::kValueOffset));
   __ j(zero, &false_result);
   // Fall through to |true_result|.
 
   // Return 1/0 for true/false in rax.
   __ bind(&true_result);
   __ movq(rax, Immediate(1));
   __ ret(1 * kPointerSize);
   __ bind(&false_result);
-  __ xor_(rax, rax);
+  __ Set(rax, 0);
   __ ret(1 * kPointerSize);
 }
 
 
 const char* GenericBinaryOpStub::GetName() {
   if (name_ != NULL) return name_;
   const int kMaxNameLength = 100;
   name_ = Isolate::Current()->bootstrapper()->AllocateAutoDeletedArray(
       kMaxNameLength);
   if (name_ == NULL) return "OOM";
@@ skipping 718 matching lines @@
 
 Handle<Code> GetBinaryOpStub(int key, BinaryOpIC::TypeInfo type_info) {
   GenericBinaryOpStub stub(key, type_info);
   return stub.GetCode();
 }
 
 
 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_ = Isolate::Current()->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();
-  return Handle<Code>::null();
+}
+
+
+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();
+}
+
+
+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);
 }
 
 
 void TranscendentalCacheStub::Generate(MacroAssembler* masm) {
   // Input on stack:
   // rsp[8]: argument (should be number).
   // rsp[0]: return address.
   Label runtime_call;
   Label runtime_call_clear_stack;
   Label input_not_smi;
@@ skipping 1565 matching lines @@
   __ movq(kScratchRegister, handler_address);
   __ movq(rsp, Operand(kScratchRegister, 0));
   // get next in chain
   __ pop(rcx);
   __ movq(Operand(kScratchRegister, 0), rcx);
   __ pop(rbp);  // pop frame pointer
   __ pop(rdx);  // remove state
 
   // Before returning we restore the context from the frame pointer if not NULL.
   // The frame pointer is NULL in the exception handler of a JS entry frame.
-  __ xor_(rsi, rsi);  // tentatively set context pointer to NULL
+  __ Set(rsi, 0);  // Tentatively set context pointer to NULL
   NearLabel skip;
   __ cmpq(rbp, Immediate(0));
   __ j(equal, &skip);
   __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
   __ bind(&skip);
   __ ret(0);
 }
 
 
 void CEntryStub::GenerateCore(MacroAssembler* masm,
@@ skipping 168 matching lines @@
     __ movq(rax, Immediate(false));
     __ store_rax(external_caught);
 
     // Set pending exception and rax to out of memory exception.
     ExternalReference pending_exception(Isolate::k_pending_exception_address);
     __ movq(rax, Failure::OutOfMemoryException(), RelocInfo::NONE);
     __ store_rax(pending_exception);
   }
 
   // Clear the context pointer.
-  __ xor_(rsi, rsi);
+  __ Set(rsi, 0);
 
   // Restore registers from handler.
   STATIC_ASSERT(StackHandlerConstants::kNextOffset + kPointerSize ==
             StackHandlerConstants::kFPOffset);
   __ pop(rbp);  // FP
   STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize ==
             StackHandlerConstants::kStateOffset);
   __ pop(rdx);  // State
 
   STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize ==
@@ skipping 1332 matching lines @@
 
 void ICCompareStub::GenerateMiss(MacroAssembler* masm) {
   UNIMPLEMENTED();
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64