Revision: 23094
Author:   [email protected]
Date:     Wed Aug 13 00:04:54 2014 UTC
Log:      Version 3.28.73 (based on bleeding_edge revision r23084)

Performance and stability improvements on all platforms.
http://code.google.com/p/v8/source/detail?r=23094

Added:
 /trunk/src/compiler/change-lowering.cc
 /trunk/src/compiler/change-lowering.h
 /trunk/test/compiler-unittests/change-lowering-unittest.cc
 /trunk/test/compiler-unittests/node-matchers.cc
 /trunk/test/compiler-unittests/node-matchers.h
 /trunk/test/mjsunit/own-symbols.js
 /trunk/test/mjsunit/runtime-gen/createprivateownsymbol.js
 /trunk/testing/gtest-type-names.h
Modified:
 /trunk/ChangeLog
 /trunk/src/api.cc
 /trunk/src/arm/assembler-arm.h
 /trunk/src/arm/lithium-arm.h
 /trunk/src/arm64/assembler-arm64.h
 /trunk/src/arm64/instrument-arm64.h
 /trunk/src/arm64/lithium-arm64.h
 /trunk/src/arm64/macro-assembler-arm64.h
 /trunk/src/base/platform/platform.h
 /trunk/src/bootstrapper.cc
 /trunk/src/code-stubs.h
 /trunk/src/compiler/node-properties-inl.h
 /trunk/src/compiler/node-properties.h
 /trunk/src/compiler/pipeline.cc
 /trunk/src/compiler/representation-change.h
 /trunk/src/effects.h
 /trunk/src/factory.cc
 /trunk/src/factory.h
 /trunk/src/globals.h
 /trunk/src/heap/heap.cc
 /trunk/src/hydrogen-instructions.h
 /trunk/src/hydrogen.cc
 /trunk/src/ia32/lithium-ia32.h
 /trunk/src/interpreter-irregexp.cc
 /trunk/src/libplatform/worker-thread.cc
 /trunk/src/log.cc
 /trunk/src/lookup.h
 /trunk/src/macro-assembler.h
 /trunk/src/math.js
 /trunk/src/mips/lithium-mips.h
 /trunk/src/mips64/lithium-mips64.h
 /trunk/src/objects-inl.h
 /trunk/src/objects-printer.cc
 /trunk/src/objects.cc
 /trunk/src/objects.h
 /trunk/src/optimizing-compiler-thread.h
 /trunk/src/runtime.cc
 /trunk/src/runtime.h
 /trunk/src/splay-tree.h
 /trunk/src/unique.h
 /trunk/src/version.cc
 /trunk/src/x64/lithium-x64.h
 /trunk/src/x87/lithium-x87.h
 /trunk/test/base-unittests/platform/condition-variable-unittest.cc
 /trunk/test/base-unittests/platform/platform-unittest.cc
 /trunk/test/benchmarks/benchmarks.status
 /trunk/test/cctest/cctest.h
 /trunk/test/cctest/compiler/graph-builder-tester.cc
 /trunk/test/cctest/compiler/test-instruction.cc
 /trunk/test/cctest/compiler/test-representation-change.cc
 /trunk/test/cctest/compiler/test-simplified-lowering.cc
 /trunk/test/cctest/test-api.cc
 /trunk/test/cctest/test-circular-queue.cc
 /trunk/test/cctest/test-debug.cc
 /trunk/test/cctest/test-declarative-accessors.cc
 /trunk/test/cctest/test-libplatform.h
 /trunk/test/cctest/test-lockers.cc
 /trunk/test/cctest/test-semaphore.cc
 /trunk/test/cctest/test-thread-termination.cc
 /trunk/test/cctest/test-threads.cc
 /trunk/test/compiler-unittests/DEPS
 /trunk/test/compiler-unittests/arm/instruction-selector-arm-unittest.cc
 /trunk/test/compiler-unittests/compiler-unittests.gyp
 /trunk/test/compiler-unittests/compiler-unittests.h
 /trunk/test/compiler-unittests/instruction-selector-unittest.cc
 /trunk/test/mjsunit/es6/math-log1p.js
 /trunk/test/mjsunit/mjsunit.status
 /trunk/testing/gtest.gyp
 /trunk/third_party/fdlibm/fdlibm.cc
 /trunk/third_party/fdlibm/fdlibm.h
 /trunk/third_party/fdlibm/fdlibm.js
 /trunk/tools/generate-runtime-tests.py
 /trunk/tools/gyp/v8.gyp
 /trunk/tools/whitespace.txt

=======================================
--- /dev/null
+++ /trunk/src/compiler/change-lowering.cc      Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,260 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/compiler/change-lowering.h"
+
+#include "src/compiler/common-node-cache.h"
+#include "src/compiler/graph.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+ChangeLoweringBase::ChangeLoweringBase(Graph* graph, Linkage* linkage,
+                                       CommonNodeCache* cache)
+    : graph_(graph),
+      isolate_(graph->zone()->isolate()),
+      linkage_(linkage),
+      cache_(cache),
+      common_(graph->zone()),
+      machine_(graph->zone()) {}
+
+
+ChangeLoweringBase::~ChangeLoweringBase() {}
+
+
+Node* ChangeLoweringBase::ExternalConstant(ExternalReference reference) {
+  Node** loc = cache()->FindExternalConstant(reference);
+  if (*loc == NULL) {
+    *loc = graph()->NewNode(common()->ExternalConstant(reference));
+  }
+  return *loc;
+}
+
+
+Node* ChangeLoweringBase::HeapConstant(PrintableUnique<HeapObject> value) {
+  // TODO(bmeurer): Use common node cache.
+  return graph()->NewNode(common()->HeapConstant(value));
+}
+
+
+Node* ChangeLoweringBase::ImmovableHeapConstant(Handle<HeapObject> value) {
+  return HeapConstant(
+ PrintableUnique<HeapObject>::CreateImmovable(graph()->zone(), value));
+}
+
+
+Node* ChangeLoweringBase::Int32Constant(int32_t value) {
+  Node** loc = cache()->FindInt32Constant(value);
+  if (*loc == NULL) {
+    *loc = graph()->NewNode(common()->Int32Constant(value));
+  }
+  return *loc;
+}
+
+
+Node* ChangeLoweringBase::NumberConstant(double value) {
+  Node** loc = cache()->FindNumberConstant(value);
+  if (*loc == NULL) {
+    *loc = graph()->NewNode(common()->NumberConstant(value));
+  }
+  return *loc;
+}
+
+
+Node* ChangeLoweringBase::CEntryStubConstant() {
+  if (!c_entry_stub_constant_.is_set()) {
+    c_entry_stub_constant_.set(
+        ImmovableHeapConstant(CEntryStub(isolate(), 1).GetCode()));
+  }
+  return c_entry_stub_constant_.get();
+}
+
+
+Node* ChangeLoweringBase::TrueConstant() {
+  if (!true_constant_.is_set()) {
+    true_constant_.set(
+        ImmovableHeapConstant(isolate()->factory()->true_value()));
+  }
+  return true_constant_.get();
+}
+
+
+Node* ChangeLoweringBase::FalseConstant() {
+  if (!false_constant_.is_set()) {
+    false_constant_.set(
+        ImmovableHeapConstant(isolate()->factory()->false_value()));
+  }
+  return false_constant_.get();
+}
+
+
+Reduction ChangeLoweringBase::ChangeBitToBool(Node* val, Node* control) {
+  Node* branch = graph()->NewNode(common()->Branch(), val, control);
+
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* true_value = TrueConstant();
+
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+  Node* false_value = FalseConstant();
+
+  Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
+  Node* phi =
+      graph()->NewNode(common()->Phi(2), true_value, false_value, merge);
+
+  return Replace(phi);
+}
+
+
+template <size_t kPointerSize>
+ChangeLowering<kPointerSize>::ChangeLowering(Graph* graph, Linkage* linkage)
+    : ChangeLoweringBase(graph, linkage,
+ new (graph->zone()) CommonNodeCache(graph->zone())) {}
+
+
+template <size_t kPointerSize>
+Reduction ChangeLowering<kPointerSize>::Reduce(Node* node) {
+  Node* control = graph()->start();
+  Node* effect = control;
+  switch (node->opcode()) {
+    case IrOpcode::kChangeBitToBool:
+      return ChangeBitToBool(node->InputAt(0), control);
+    case IrOpcode::kChangeBoolToBit:
+      return ChangeBoolToBit(node->InputAt(0));
+    case IrOpcode::kChangeInt32ToTagged:
+      return ChangeInt32ToTagged(node->InputAt(0), effect, control);
+    case IrOpcode::kChangeTaggedToFloat64:
+      return ChangeTaggedToFloat64(node->InputAt(0), effect, control);
+    default:
+      return NoChange();
+  }
+  UNREACHABLE();
+  return NoChange();
+}
+
+
+template <>
+Reduction ChangeLowering<4>::ChangeBoolToBit(Node* val) {
+  return Replace(
+      graph()->NewNode(machine()->Word32Equal(), val, TrueConstant()));
+}
+
+
+template <>
+Reduction ChangeLowering<8>::ChangeBoolToBit(Node* val) {
+  return Replace(
+      graph()->NewNode(machine()->Word64Equal(), val, TrueConstant()));
+}
+
+
+template <>
+Reduction ChangeLowering<4>::ChangeInt32ToTagged(Node* val, Node* effect,
+                                                 Node* control) {
+  Node* context = NumberConstant(0);
+
+ Node* add = graph()->NewNode(machine()->Int32AddWithOverflow(), val, val);
+  Node* ovf = graph()->NewNode(common()->Projection(1), add);
+
+  Node* branch = graph()->NewNode(common()->Branch(), ovf, control);
+
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* number = graph()->NewNode(machine()->ChangeInt32ToFloat64(), val);
+
+  // TODO(bmeurer): Inline allocation if possible.
+  const Runtime::Function* fn =
+      Runtime::FunctionForId(Runtime::kAllocateHeapNumber);
+  DCHECK_EQ(0, fn->nargs);
+  CallDescriptor* desc = linkage()->GetRuntimeCallDescriptor(
+      fn->function_id, 0, Operator::kNoProperties);
+  Node* heap_number =
+      graph()->NewNode(common()->Call(desc), CEntryStubConstant(),
+                       ExternalConstant(ExternalReference(fn, isolate())),
+                       Int32Constant(0), context, effect, if_true);
+
+  Node* store = graph()->NewNode(
+      machine()->Store(kMachineFloat64, kNoWriteBarrier), heap_number,
+ Int32Constant(HeapNumber::kValueOffset - kHeapObjectTag), number, effect,
+      heap_number);
+
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+  Node* smi = graph()->NewNode(common()->Projection(0), add);
+
+  Node* merge = graph()->NewNode(common()->Merge(2), store, if_false);
+  Node* phi = graph()->NewNode(common()->Phi(2), heap_number, smi, merge);
+
+  return Replace(phi);
+}
+
+
+template <>
+Reduction ChangeLowering<8>::ChangeInt32ToTagged(Node* val, Node* effect,
+                                                 Node* control) {
+  return Replace(graph()->NewNode(
+      machine()->Word64Shl(), val,
+      Int32Constant(SmiTagging<8>::kSmiShiftSize + kSmiTagSize)));
+}
+
+
+template <>
+Reduction ChangeLowering<4>::ChangeTaggedToFloat64(Node* val, Node* effect,
+                                                   Node* control) {
+  Node* branch = graph()->NewNode(
+      common()->Branch(),
+ graph()->NewNode(machine()->Word32And(), val, Int32Constant(kSmiTagMask)),
+      control);
+
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* load = graph()->NewNode(
+      machine()->Load(kMachineFloat64), val,
+      Int32Constant(HeapNumber::kValueOffset - kHeapObjectTag), if_true);
+
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+  Node* number = graph()->NewNode(
+      machine()->ChangeInt32ToFloat64(),
+      graph()->NewNode(
+          machine()->Word32Sar(), val,
+          Int32Constant(SmiTagging<4>::kSmiShiftSize + kSmiTagSize)));
+
+  Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
+  Node* phi = graph()->NewNode(common()->Phi(2), load, number, merge);
+
+  return Replace(phi);
+}
+
+
+template <>
+Reduction ChangeLowering<8>::ChangeTaggedToFloat64(Node* val, Node* effect,
+                                                   Node* control) {
+  Node* branch = graph()->NewNode(
+      common()->Branch(),
+ graph()->NewNode(machine()->Word64And(), val, Int32Constant(kSmiTagMask)),
+      control);
+
+  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
+  Node* load = graph()->NewNode(
+      machine()->Load(kMachineFloat64), val,
+      Int32Constant(HeapNumber::kValueOffset - kHeapObjectTag), if_true);
+
+  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
+  Node* number = graph()->NewNode(
+      machine()->ChangeInt32ToFloat64(),
+      graph()->NewNode(
+          machine()->ConvertInt64ToInt32(),
+          graph()->NewNode(
+              machine()->Word64Sar(), val,
+              Int32Constant(SmiTagging<8>::kSmiShiftSize + kSmiTagSize))));
+
+  Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
+  Node* phi = graph()->NewNode(common()->Phi(2), load, number, merge);
+
+  return Replace(phi);
+}
+
+
+template class ChangeLowering<4>;
+template class ChangeLowering<8>;
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
=======================================
--- /dev/null
+++ /trunk/src/compiler/change-lowering.h       Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,79 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_COMPILER_CHANGE_LOWERING_H_
+#define V8_COMPILER_CHANGE_LOWERING_H_
+
+#include "include/v8.h"
+#include "src/compiler/common-operator.h"
+#include "src/compiler/graph-reducer.h"
+#include "src/compiler/machine-operator.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Forward declarations.
+class CommonNodeCache;
+class Linkage;
+
+class ChangeLoweringBase : public Reducer {
+ public:
+ ChangeLoweringBase(Graph* graph, Linkage* linkage, CommonNodeCache* cache);
+  virtual ~ChangeLoweringBase();
+
+ protected:
+  Node* ExternalConstant(ExternalReference reference);
+  Node* HeapConstant(PrintableUnique<HeapObject> value);
+  Node* ImmovableHeapConstant(Handle<HeapObject> value);
+  Node* Int32Constant(int32_t value);
+  Node* NumberConstant(double value);
+  Node* CEntryStubConstant();
+  Node* TrueConstant();
+  Node* FalseConstant();
+
+  Reduction ChangeBitToBool(Node* val, Node* control);
+
+  Graph* graph() const { return graph_; }
+  Isolate* isolate() const { return isolate_; }
+  Linkage* linkage() const { return linkage_; }
+  CommonNodeCache* cache() const { return cache_; }
+  CommonOperatorBuilder* common() { return &common_; }
+  MachineOperatorBuilder* machine() { return &machine_; }
+
+ private:
+  Graph* graph_;
+  Isolate* isolate_;
+  Linkage* linkage_;
+  CommonNodeCache* cache_;
+  CommonOperatorBuilder common_;
+  MachineOperatorBuilder machine_;
+
+  SetOncePointer<Node> c_entry_stub_constant_;
+  SetOncePointer<Node> true_constant_;
+  SetOncePointer<Node> false_constant_;
+};
+
+
+template <size_t kPointerSize = kApiPointerSize>
+class ChangeLowering V8_FINAL : public ChangeLoweringBase {
+ public:
+  ChangeLowering(Graph* graph, Linkage* linkage);
+  ChangeLowering(Graph* graph, Linkage* linkage, CommonNodeCache* cache)
+      : ChangeLoweringBase(graph, linkage, cache) {}
+  virtual ~ChangeLowering() {}
+
+  virtual Reduction Reduce(Node* node) V8_OVERRIDE;
+
+ private:
+  Reduction ChangeBoolToBit(Node* val);
+  Reduction ChangeInt32ToTagged(Node* val, Node* effect, Node* control);
+  Reduction ChangeTaggedToFloat64(Node* val, Node* effect, Node* control);
+};
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_CHANGE_LOWERING_H_
=======================================
--- /dev/null
+++ /trunk/test/compiler-unittests/change-lowering-unittest.cc Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,257 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/compiler/change-lowering.h"
+#include "src/compiler/common-operator.h"
+#include "src/compiler/graph.h"
+#include "src/compiler/node-properties-inl.h"
+#include "src/compiler/simplified-operator.h"
+#include "src/factory.h"
+#include "test/compiler-unittests/compiler-unittests.h"
+#include "test/compiler-unittests/node-matchers.h"
+#include "testing/gtest-type-names.h"
+
+using testing::_;
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+template <typename T>
+class ChangeLoweringTest : public CompilerTest {
+ public:
+  static const size_t kPointerSize = sizeof(T);
+
+  explicit ChangeLoweringTest(int num_parameters = 1)
+      : graph_(zone()), common_(zone()), simplified_(zone()) {
+    graph()->SetStart(graph()->NewNode(common()->Start(num_parameters)));
+  }
+  virtual ~ChangeLoweringTest() {}
+
+ protected:
+  Node* Parameter(int32_t index = 0) {
+    return graph()->NewNode(common()->Parameter(index), graph()->start());
+  }
+
+  Reduction Reduce(Node* node) {
+    CompilationInfo info(isolate(), zone());
+    Linkage linkage(&info);
+    ChangeLowering<kPointerSize> reducer(graph(), &linkage);
+    return reducer.Reduce(node);
+  }
+
+  Graph* graph() { return &graph_; }
+  Factory* factory() const { return isolate()->factory(); }
+  CommonOperatorBuilder* common() { return &common_; }
+  SimplifiedOperatorBuilder* simplified() { return &simplified_; }
+
+  PrintableUnique<HeapObject> true_unique() {
+    return PrintableUnique<HeapObject>::CreateImmovable(
+        zone(), factory()->true_value());
+  }
+  PrintableUnique<HeapObject> false_unique() {
+    return PrintableUnique<HeapObject>::CreateImmovable(
+        zone(), factory()->false_value());
+  }
+
+ private:
+  Graph graph_;
+  CommonOperatorBuilder common_;
+  SimplifiedOperatorBuilder simplified_;
+};
+
+
+typedef ::testing::Types<int32_t, int64_t> ChangeLoweringTypes;
+TYPED_TEST_CASE(ChangeLoweringTest, ChangeLoweringTypes);
+
+
+TARGET_TYPED_TEST(ChangeLoweringTest, ChangeBitToBool) {
+  Node* val = this->Parameter(0);
+  Node* node =
+      this->graph()->NewNode(this->simplified()->ChangeBitToBool(), val);
+  Reduction reduction = this->Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  Node* phi = reduction.replacement();
+  EXPECT_THAT(phi, IsPhi(IsHeapConstant(this->true_unique()),
+                         IsHeapConstant(this->false_unique()), _));
+
+  Node* merge = NodeProperties::GetControlInput(phi);
+  ASSERT_EQ(IrOpcode::kMerge, merge->opcode());
+
+  Node* if_true = NodeProperties::GetControlInput(merge, 0);
+  ASSERT_EQ(IrOpcode::kIfTrue, if_true->opcode());
+
+  Node* if_false = NodeProperties::GetControlInput(merge, 1);
+  ASSERT_EQ(IrOpcode::kIfFalse, if_false->opcode());
+
+  Node* branch = NodeProperties::GetControlInput(if_true);
+  EXPECT_EQ(branch, NodeProperties::GetControlInput(if_false));
+  EXPECT_THAT(branch, IsBranch(val, this->graph()->start()));
+}
+
+
+TARGET_TYPED_TEST(ChangeLoweringTest, StringAdd) {
+  Node* node = this->graph()->NewNode(this->simplified()->StringAdd(),
+ this->Parameter(0), this->Parameter(1));
+  Reduction reduction = this->Reduce(node);
+  EXPECT_FALSE(reduction.Changed());
+}
+
+
+class ChangeLowering32Test : public ChangeLoweringTest<int32_t> {
+ public:
+  virtual ~ChangeLowering32Test() {}
+};
+
+
+TARGET_TEST_F(ChangeLowering32Test, ChangeBoolToBit) {
+  Node* val = Parameter(0);
+  Node* node = graph()->NewNode(simplified()->ChangeBoolToBit(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  EXPECT_THAT(reduction.replacement(),
+              IsWord32Equal(val, IsHeapConstant(true_unique())));
+}
+
+
+TARGET_TEST_F(ChangeLowering32Test, ChangeInt32ToTagged) {
+  Node* val = Parameter(0);
+  Node* node = graph()->NewNode(simplified()->ChangeInt32ToTagged(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  Node* phi = reduction.replacement();
+  ASSERT_EQ(IrOpcode::kPhi, phi->opcode());
+
+  Node* smi = NodeProperties::GetValueInput(phi, 1);
+  ASSERT_THAT(smi, IsProjection(0, IsInt32AddWithOverflow(val, val)));
+
+  Node* heap_number = NodeProperties::GetValueInput(phi, 0);
+  ASSERT_EQ(IrOpcode::kCall, heap_number->opcode());
+
+  Node* merge = NodeProperties::GetControlInput(phi);
+  ASSERT_EQ(IrOpcode::kMerge, merge->opcode());
+
+  const int32_t kValueOffset = HeapNumber::kValueOffset - kHeapObjectTag;
+  EXPECT_THAT(NodeProperties::GetControlInput(merge, 0),
+              IsStore(kMachineFloat64, kNoWriteBarrier, heap_number,
+                      IsInt32Constant(kValueOffset),
+                      IsChangeInt32ToFloat64(val), _, heap_number));
+
+  Node* if_true = NodeProperties::GetControlInput(heap_number);
+  ASSERT_EQ(IrOpcode::kIfTrue, if_true->opcode());
+
+  Node* if_false = NodeProperties::GetControlInput(merge, 1);
+  ASSERT_EQ(IrOpcode::kIfFalse, if_false->opcode());
+
+  Node* branch = NodeProperties::GetControlInput(if_true);
+  EXPECT_EQ(branch, NodeProperties::GetControlInput(if_false));
+  EXPECT_THAT(branch,
+              IsBranch(IsProjection(1, IsInt32AddWithOverflow(val, val)),
+                       graph()->start()));
+}
+
+
+TARGET_TEST_F(ChangeLowering32Test, ChangeTaggedToFloat64) {
+  Node* val = Parameter(0);
+ Node* node = graph()->NewNode(simplified()->ChangeTaggedToFloat64(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  const int32_t kShiftAmount =
+      kSmiTagSize + SmiTagging<kPointerSize>::kSmiShiftSize;
+  const int32_t kValueOffset = HeapNumber::kValueOffset - kHeapObjectTag;
+  Node* phi = reduction.replacement();
+  ASSERT_THAT(
+ phi, IsPhi(IsLoad(kMachineFloat64, val, IsInt32Constant(kValueOffset), _),
+                 IsChangeInt32ToFloat64(
+                     IsWord32Sar(val, IsInt32Constant(kShiftAmount))),
+                 _));
+
+  Node* merge = NodeProperties::GetControlInput(phi);
+  ASSERT_EQ(IrOpcode::kMerge, merge->opcode());
+
+  Node* if_true = NodeProperties::GetControlInput(merge, 0);
+  ASSERT_EQ(IrOpcode::kIfTrue, if_true->opcode());
+
+  Node* if_false = NodeProperties::GetControlInput(merge, 1);
+  ASSERT_EQ(IrOpcode::kIfFalse, if_false->opcode());
+
+  Node* branch = NodeProperties::GetControlInput(if_true);
+  EXPECT_EQ(branch, NodeProperties::GetControlInput(if_false));
+  STATIC_ASSERT(kSmiTag == 0);
+  STATIC_ASSERT(kSmiTagSize == 1);
+ EXPECT_THAT(branch, IsBranch(IsWord32And(val, IsInt32Constant(kSmiTagMask)),
+                               graph()->start()));
+}
+
+
+class ChangeLowering64Test : public ChangeLoweringTest<int64_t> {
+ public:
+  virtual ~ChangeLowering64Test() {}
+};
+
+
+TARGET_TEST_F(ChangeLowering64Test, ChangeBoolToBit) {
+  Node* val = Parameter(0);
+  Node* node = graph()->NewNode(simplified()->ChangeBoolToBit(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  EXPECT_THAT(reduction.replacement(),
+              IsWord64Equal(val, IsHeapConstant(true_unique())));
+}
+
+
+TARGET_TEST_F(ChangeLowering64Test, ChangeInt32ToTagged) {
+  Node* val = Parameter(0);
+  Node* node = graph()->NewNode(simplified()->ChangeInt32ToTagged(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  const int32_t kShiftAmount =
+      kSmiTagSize + SmiTagging<kPointerSize>::kSmiShiftSize;
+  EXPECT_THAT(reduction.replacement(),
+              IsWord64Shl(val, IsInt32Constant(kShiftAmount)));
+}
+
+
+TARGET_TEST_F(ChangeLowering64Test, ChangeTaggedToFloat64) {
+  Node* val = Parameter(0);
+ Node* node = graph()->NewNode(simplified()->ChangeTaggedToFloat64(), val);
+  Reduction reduction = Reduce(node);
+  ASSERT_TRUE(reduction.Changed());
+
+  const int32_t kShiftAmount =
+      kSmiTagSize + SmiTagging<kPointerSize>::kSmiShiftSize;
+  const int32_t kValueOffset = HeapNumber::kValueOffset - kHeapObjectTag;
+  Node* phi = reduction.replacement();
+  ASSERT_THAT(
+ phi, IsPhi(IsLoad(kMachineFloat64, val, IsInt32Constant(kValueOffset), _),
+                 IsChangeInt32ToFloat64(IsConvertInt64ToInt32(
+                     IsWord64Sar(val, IsInt32Constant(kShiftAmount)))),
+                 _));
+
+  Node* merge = NodeProperties::GetControlInput(phi);
+  ASSERT_EQ(IrOpcode::kMerge, merge->opcode());
+
+  Node* if_true = NodeProperties::GetControlInput(merge, 0);
+  ASSERT_EQ(IrOpcode::kIfTrue, if_true->opcode());
+
+  Node* if_false = NodeProperties::GetControlInput(merge, 1);
+  ASSERT_EQ(IrOpcode::kIfFalse, if_false->opcode());
+
+  Node* branch = NodeProperties::GetControlInput(if_true);
+  EXPECT_EQ(branch, NodeProperties::GetControlInput(if_false));
+  STATIC_ASSERT(kSmiTag == 0);
+  STATIC_ASSERT(kSmiTagSize == 1);
+ EXPECT_THAT(branch, IsBranch(IsWord64And(val, IsInt32Constant(kSmiTagMask)),
+                               graph()->start()));
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
=======================================
--- /dev/null
+++ /trunk/test/compiler-unittests/node-matchers.cc Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,454 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "test/compiler-unittests/node-matchers.h"
+
+#include <ostream>  // NOLINT(readability/streams)
+
+#include "src/compiler/node-properties-inl.h"
+
+using testing::MakeMatcher;
+using testing::MatcherInterface;
+using testing::MatchResultListener;
+using testing::StringMatchResultListener;
+
+namespace v8 {
+namespace internal {
+
+// TODO(bmeurer): Find a new home for these functions.
+template <typename T>
+inline std::ostream& operator<<(std::ostream& os,
+                                const PrintableUnique<T>& value) {
+  return os << value.string();
+}
+
+namespace compiler {
+
+namespace {
+
+template <typename T>
+bool PrintMatchAndExplain(const T& value, const char* value_name,
+                          const Matcher<T>& value_matcher,
+                          MatchResultListener* listener) {
+  StringMatchResultListener value_listener;
+  if (!value_matcher.MatchAndExplain(value, &value_listener)) {
+ *listener << "whose " << value_name << " " << value << " doesn't match";
+    if (value_listener.str() != "") {
+      *listener << ", " << value_listener.str();
+    }
+    return false;
+  }
+  return true;
+}
+
+
+class NodeMatcher : public MatcherInterface<Node*> {
+ public:
+  explicit NodeMatcher(IrOpcode::Value opcode) : opcode_(opcode) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    *os << "is a " << IrOpcode::Mnemonic(opcode_) << " node";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    if (node == NULL) {
+      *listener << "which is NULL";
+      return false;
+    }
+    if (node->opcode() != opcode_) {
+ *listener << "whose opcode is " << IrOpcode::Mnemonic(node->opcode());
+      return false;
+    }
+    return true;
+  }
+
+ private:
+  const IrOpcode::Value opcode_;
+};
+
+
+class IsBranchMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsBranchMatcher(const Matcher<Node*>& value_matcher,
+                  const Matcher<Node*>& control_matcher)
+      : NodeMatcher(IrOpcode::kBranch),
+        value_matcher_(value_matcher),
+        control_matcher_(control_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose value (";
+    value_matcher_.DescribeTo(os);
+    *os << ") and control (";
+    control_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0),
+                                 "value", value_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetControlInput(node),
+                                 "control", control_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> value_matcher_;
+  const Matcher<Node*> control_matcher_;
+};
+
+
+template <typename T>
+class IsConstantMatcher V8_FINAL : public NodeMatcher {
+ public:
+ IsConstantMatcher(IrOpcode::Value opcode, const Matcher<T>& value_matcher)
+      : NodeMatcher(opcode), value_matcher_(value_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose value (";
+    value_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+ PrintMatchAndExplain(OpParameter<T>(node), "value", value_matcher_,
+                                 listener));
+  }
+
+ private:
+  const Matcher<T> value_matcher_;
+};
+
+
+class IsPhiMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsPhiMatcher(const Matcher<Node*>& value0_matcher,
+               const Matcher<Node*>& value1_matcher,
+               const Matcher<Node*>& control_matcher)
+      : NodeMatcher(IrOpcode::kPhi),
+        value0_matcher_(value0_matcher),
+        value1_matcher_(value1_matcher),
+        control_matcher_(control_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose value0 (";
+    value0_matcher_.DescribeTo(os);
+    *os << "), value1 (";
+    value1_matcher_.DescribeTo(os);
+    *os << ") and control (";
+    control_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0),
+                                 "value0", value0_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 1),
+                                 "value1", value1_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetControlInput(node),
+                                 "control", control_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> value0_matcher_;
+  const Matcher<Node*> value1_matcher_;
+  const Matcher<Node*> control_matcher_;
+};
+
+
+class IsProjectionMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsProjectionMatcher(const Matcher<int32_t>& index_matcher,
+                      const Matcher<Node*>& base_matcher)
+      : NodeMatcher(IrOpcode::kProjection),
+        index_matcher_(index_matcher),
+        base_matcher_(base_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose index (";
+    index_matcher_.DescribeTo(os);
+    *os << ") and base (";
+    base_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(OpParameter<int32_t>(node), "index",
+                                 index_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0), "base",
+                                 base_matcher_, listener));
+  }
+
+ private:
+  const Matcher<int32_t> index_matcher_;
+  const Matcher<Node*> base_matcher_;
+};
+
+
+class IsLoadMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsLoadMatcher(const Matcher<MachineType>& type_matcher,
+                const Matcher<Node*>& base_matcher,
+                const Matcher<Node*>& index_matcher,
+                const Matcher<Node*>& effect_matcher)
+      : NodeMatcher(IrOpcode::kLoad),
+        type_matcher_(type_matcher),
+        base_matcher_(base_matcher),
+        index_matcher_(index_matcher),
+        effect_matcher_(effect_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose type (";
+    type_matcher_.DescribeTo(os);
+    *os << "), base (";
+    base_matcher_.DescribeTo(os);
+    *os << "), index (";
+    index_matcher_.DescribeTo(os);
+    *os << ") and effect (";
+    effect_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(OpParameter<MachineType>(node), "type",
+                                 type_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0), "base",
+                                 base_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 1),
+                                 "index", index_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetEffectInput(node), "effect",
+                                 effect_matcher_, listener));
+  }
+
+ private:
+  const Matcher<MachineType> type_matcher_;
+  const Matcher<Node*> base_matcher_;
+  const Matcher<Node*> index_matcher_;
+  const Matcher<Node*> effect_matcher_;
+};
+
+
+class IsStoreMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsStoreMatcher(const Matcher<MachineType>& type_matcher,
+                 const Matcher<WriteBarrierKind> write_barrier_matcher,
+                 const Matcher<Node*>& base_matcher,
+                 const Matcher<Node*>& index_matcher,
+                 const Matcher<Node*>& value_matcher,
+                 const Matcher<Node*>& effect_matcher,
+                 const Matcher<Node*>& control_matcher)
+      : NodeMatcher(IrOpcode::kStore),
+        type_matcher_(type_matcher),
+        write_barrier_matcher_(write_barrier_matcher),
+        base_matcher_(base_matcher),
+        index_matcher_(index_matcher),
+        value_matcher_(value_matcher),
+        effect_matcher_(effect_matcher),
+        control_matcher_(control_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose type (";
+    type_matcher_.DescribeTo(os);
+    *os << "), write barrier (";
+    write_barrier_matcher_.DescribeTo(os);
+    *os << "), base (";
+    base_matcher_.DescribeTo(os);
+    *os << "), index (";
+    index_matcher_.DescribeTo(os);
+    *os << "), value (";
+    value_matcher_.DescribeTo(os);
+    *os << "), effect (";
+    effect_matcher_.DescribeTo(os);
+    *os << ") and control (";
+    control_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+ PrintMatchAndExplain(OpParameter<StoreRepresentation>(node).rep,
+                                 "type", type_matcher_, listener) &&
+            PrintMatchAndExplain(
+                OpParameter<StoreRepresentation>(node).write_barrier_kind,
+                "write barrier", write_barrier_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0), "base",
+                                 base_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 1),
+                                 "index", index_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 2),
+                                 "value", value_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetEffectInput(node), "effect",
+                                 effect_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetControlInput(node),
+                                 "control", control_matcher_, listener));
+  }
+
+ private:
+  const Matcher<MachineType> type_matcher_;
+  const Matcher<WriteBarrierKind> write_barrier_matcher_;
+  const Matcher<Node*> base_matcher_;
+  const Matcher<Node*> index_matcher_;
+  const Matcher<Node*> value_matcher_;
+  const Matcher<Node*> effect_matcher_;
+  const Matcher<Node*> control_matcher_;
+};
+
+
+class IsBinopMatcher V8_FINAL : public NodeMatcher {
+ public:
+  IsBinopMatcher(IrOpcode::Value opcode, const Matcher<Node*>& lhs_matcher,
+                 const Matcher<Node*>& rhs_matcher)
+      : NodeMatcher(opcode),
+        lhs_matcher_(lhs_matcher),
+        rhs_matcher_(rhs_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose lhs (";
+    lhs_matcher_.DescribeTo(os);
+    *os << ") and rhs (";
+    rhs_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0), "lhs",
+                                 lhs_matcher_, listener) &&
+ PrintMatchAndExplain(NodeProperties::GetValueInput(node, 1), "rhs",
+                                 rhs_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> lhs_matcher_;
+  const Matcher<Node*> rhs_matcher_;
+};
+
+
+class IsUnopMatcher V8_FINAL : public NodeMatcher {
+ public:
+ IsUnopMatcher(IrOpcode::Value opcode, const Matcher<Node*>& input_matcher)
+      : NodeMatcher(opcode), input_matcher_(input_matcher) {}
+
+  virtual void DescribeTo(std::ostream* os) const V8_OVERRIDE {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose input (";
+    input_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+ virtual bool MatchAndExplain(Node* node, MatchResultListener* listener) const
+      V8_OVERRIDE {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0),
+                                 "input", input_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> input_matcher_;
+};
+
+}
+
+
+Matcher<Node*> IsBranch(const Matcher<Node*>& value_matcher,
+                        const Matcher<Node*>& control_matcher) {
+  return MakeMatcher(new IsBranchMatcher(value_matcher, control_matcher));
+}
+
+
+Matcher<Node*> IsInt32Constant(const Matcher<int32_t>& value_matcher) {
+  return MakeMatcher(
+ new IsConstantMatcher<int32_t>(IrOpcode::kInt32Constant, value_matcher));
+}
+
+
+Matcher<Node*> IsHeapConstant(
+    const Matcher<PrintableUnique<HeapObject> >& value_matcher) {
+  return MakeMatcher(new IsConstantMatcher<PrintableUnique<HeapObject> >(
+      IrOpcode::kHeapConstant, value_matcher));
+}
+
+
+Matcher<Node*> IsPhi(const Matcher<Node*>& value0_matcher,
+                     const Matcher<Node*>& value1_matcher,
+                     const Matcher<Node*>& merge_matcher) {
+  return MakeMatcher(
+      new IsPhiMatcher(value0_matcher, value1_matcher, merge_matcher));
+}
+
+
+Matcher<Node*> IsProjection(const Matcher<int32_t>& index_matcher,
+                            const Matcher<Node*>& base_matcher) {
+  return MakeMatcher(new IsProjectionMatcher(index_matcher, base_matcher));
+}
+
+
+Matcher<Node*> IsLoad(const Matcher<MachineType>& type_matcher,
+                      const Matcher<Node*>& base_matcher,
+                      const Matcher<Node*>& index_matcher,
+                      const Matcher<Node*>& effect_matcher) {
+  return MakeMatcher(new IsLoadMatcher(type_matcher, base_matcher,
+                                       index_matcher, effect_matcher));
+}
+
+
+Matcher<Node*> IsStore(const Matcher<MachineType>& type_matcher,
+ const Matcher<WriteBarrierKind>& write_barrier_matcher,
+                       const Matcher<Node*>& base_matcher,
+                       const Matcher<Node*>& index_matcher,
+                       const Matcher<Node*>& value_matcher,
+                       const Matcher<Node*>& effect_matcher,
+                       const Matcher<Node*>& control_matcher) {
+  return MakeMatcher(new IsStoreMatcher(
+      type_matcher, write_barrier_matcher, base_matcher, index_matcher,
+      value_matcher, effect_matcher, control_matcher));
+}
+
+
+#define IS_BINOP_MATCHER(Name)                                            \
+  Matcher<Node*> Is##Name(const Matcher<Node*>& lhs_matcher,              \
+                          const Matcher<Node*>& rhs_matcher) {            \
+    return MakeMatcher(                                                   \
+        new IsBinopMatcher(IrOpcode::k##Name, lhs_matcher, rhs_matcher)); \
+  }
+IS_BINOP_MATCHER(Word32And)
+IS_BINOP_MATCHER(Word32Sar)
+IS_BINOP_MATCHER(Word32Equal)
+IS_BINOP_MATCHER(Word64And)
+IS_BINOP_MATCHER(Word64Sar)
+IS_BINOP_MATCHER(Word64Shl)
+IS_BINOP_MATCHER(Word64Equal)
+IS_BINOP_MATCHER(Int32AddWithOverflow)
+#undef IS_BINOP_MATCHER
+
+
+#define IS_UNOP_MATCHER(Name) \ + Matcher<Node*> Is##Name(const Matcher<Node*>& input_matcher) { \ + return MakeMatcher(new IsUnopMatcher(IrOpcode::k##Name, input_matcher)); \
+  }
+IS_UNOP_MATCHER(ConvertInt64ToInt32)
+IS_UNOP_MATCHER(ChangeInt32ToFloat64)
+#undef IS_UNOP_MATCHER
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
=======================================
--- /dev/null
+++ /trunk/test/compiler-unittests/node-matchers.h Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,71 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_COMPILER_UNITTESTS_NODE_MATCHERS_H_
+#define V8_COMPILER_UNITTESTS_NODE_MATCHERS_H_
+
+#include "src/compiler/machine-operator.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace v8 {
+namespace internal {
+
+// Forward declarations.
+class HeapObject;
+template <class T>
+class PrintableUnique;
+
+namespace compiler {
+
+// Forward declarations.
+class Node;
+
+using testing::Matcher;
+
+Matcher<Node*> IsBranch(const Matcher<Node*>& value_matcher,
+                        const Matcher<Node*>& control_matcher);
+Matcher<Node*> IsHeapConstant(
+    const Matcher<PrintableUnique<HeapObject> >& value_matcher);
+Matcher<Node*> IsInt32Constant(const Matcher<int32_t>& value_matcher);
+Matcher<Node*> IsPhi(const Matcher<Node*>& value0_matcher,
+                     const Matcher<Node*>& value1_matcher,
+                     const Matcher<Node*>& merge_matcher);
+Matcher<Node*> IsProjection(const Matcher<int32_t>& index_matcher,
+                            const Matcher<Node*>& base_matcher);
+
+Matcher<Node*> IsLoad(const Matcher<MachineType>& type_matcher,
+                      const Matcher<Node*>& base_matcher,
+                      const Matcher<Node*>& index_matcher,
+                      const Matcher<Node*>& effect_matcher);
+Matcher<Node*> IsStore(const Matcher<MachineType>& type_matcher,
+ const Matcher<WriteBarrierKind>& write_barrier_matcher,
+                       const Matcher<Node*>& base_matcher,
+                       const Matcher<Node*>& index_matcher,
+                       const Matcher<Node*>& value_matcher,
+                       const Matcher<Node*>& effect_matcher,
+                       const Matcher<Node*>& control_matcher);
+Matcher<Node*> IsWord32And(const Matcher<Node*>& lhs_matcher,
+                           const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord32Sar(const Matcher<Node*>& lhs_matcher,
+                           const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord32Equal(const Matcher<Node*>& lhs_matcher,
+                             const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord64And(const Matcher<Node*>& lhs_matcher,
+                           const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord64Shl(const Matcher<Node*>& lhs_matcher,
+                           const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord64Sar(const Matcher<Node*>& lhs_matcher,
+                           const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsWord64Equal(const Matcher<Node*>& lhs_matcher,
+                             const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsInt32AddWithOverflow(const Matcher<Node*>& lhs_matcher,
+                                      const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsConvertInt64ToInt32(const Matcher<Node*>& input_matcher);
+Matcher<Node*> IsChangeInt32ToFloat64(const Matcher<Node*>& input_matcher);
+
+}  //  namespace compiler
+}  //  namespace internal
+}  //  namespace v8
+
+#endif  // V8_COMPILER_UNITTESTS_NODE_MATCHERS_H_
=======================================
--- /dev/null
+++ /trunk/test/mjsunit/own-symbols.js  Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,55 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --allow-natives-syntax
+
+var s = %CreatePrivateOwnSymbol("s");
+var s1 = %CreatePrivateOwnSymbol("s1");
+
+function TestSimple() {
+  var p = {}
+  p[s] = "moo";
+
+  var o = Object.create(p);
+
+  assertEquals(undefined, o[s]);
+  assertEquals("moo", p[s]);
+
+  o[s] = "bow-wow";
+  assertEquals("bow-wow", o[s]);
+  assertEquals("moo", p[s]);
+}
+
+TestSimple();
+
+
+function TestICs() {
+  var p = {}
+  p[s] = "moo";
+
+
+  var o = Object.create(p);
+  o[s1] = "bow-wow";
+  function checkNonOwn(o) {
+    assertEquals(undefined, o[s]);
+    assertEquals("bow-wow", o[s1]);
+  }
+
+  checkNonOwn(o);
+
+  // Test monomorphic/optimized.
+  for (var i = 0; i < 1000; i++) {
+    checkNonOwn(o);
+  }
+
+  // Test non-monomorphic.
+  for (var i = 0; i < 1000; i++) {
+    var oNew = Object.create(p);
+    oNew["s" + i] = i;
+    oNew[s1] = "bow-wow";
+    checkNonOwn(oNew);
+  }
+}
+
+TestICs();
=======================================
--- /dev/null
+++ /trunk/test/mjsunit/runtime-gen/createprivateownsymbol.js Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,5 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// AUTO-GENERATED BY tools/generate-runtime-tests.py, DO NOT MODIFY
+// Flags: --allow-natives-syntax --harmony --harmony-proxies
+var arg0 = "foo";
+%CreatePrivateOwnSymbol(arg0);
=======================================
--- /dev/null
+++ /trunk/testing/gtest-type-names.h   Wed Aug 13 00:04:54 2014 UTC
@@ -0,0 +1,34 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_TESTING_GTEST_TYPE_NAMES_H_
+#define V8_TESTING_GTEST_TYPE_NAMES_H_
+
+#include "include/v8stdint.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace testing {
+namespace internal {
+
+#define GET_TYPE_NAME(type)         \
+  template <>                       \
+  std::string GetTypeName<type>() { \
+    return #type;                   \
+  }
+GET_TYPE_NAME(int8_t)
+GET_TYPE_NAME(uint8_t)
+GET_TYPE_NAME(int16_t)
+GET_TYPE_NAME(uint16_t)
+GET_TYPE_NAME(int32_t)
+GET_TYPE_NAME(uint32_t)
+GET_TYPE_NAME(int64_t)
+GET_TYPE_NAME(uint64_t)
+GET_TYPE_NAME(float)
+GET_TYPE_NAME(double)
+#undef GET_TYPE_NAME
+
+}  // namespace internal
+}  // namespace testing
+
+#endif  // V8_TESTING_GTEST_TYPE_NAMES_H_
=======================================
--- /trunk/ChangeLog    Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/ChangeLog    Wed Aug 13 00:04:54 2014 UTC
@@ -1,3 +1,8 @@
+2014-08-13: Version 3.28.73
+
+        Performance and stability improvements on all platforms.
+
+
 2014-08-12: Version 3.28.71

         ToNumber(Symbol) should throw TypeError (issue 3499).
=======================================
--- /trunk/src/api.cc   Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/api.cc   Wed Aug 13 00:04:54 2014 UTC
@@ -4290,9 +4290,7 @@

   class Visitor {
    public:
-    inline explicit Visitor()
-        : utf8_length_(0),
-          state_(kInitialState) {}
+    Visitor() : utf8_length_(0), state_(kInitialState) {}

     void VisitOneByteString(const uint8_t* chars, int length) {
       int utf8_length = 0;
=======================================
--- /trunk/src/arm/assembler-arm.h      Thu Aug  7 08:39:21 2014 UTC
+++ /trunk/src/arm/assembler-arm.h      Wed Aug 13 00:04:54 2014 UTC
@@ -649,7 +649,7 @@
 // Class used to build a constant pool.
 class ConstantPoolBuilder BASE_EMBEDDED {
  public:
-  explicit ConstantPoolBuilder();
+  ConstantPoolBuilder();
   ConstantPoolArray::LayoutSection AddEntry(Assembler* assm,
                                             const RelocInfo& rinfo);
   void Relocate(int pc_delta);
=======================================
--- /trunk/src/arm/lithium-arm.h        Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/arm/lithium-arm.h        Wed Aug 13 00:04:54 2014 UTC
@@ -414,7 +414,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

=======================================
--- /trunk/src/arm64/assembler-arm64.h  Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/arm64/assembler-arm64.h  Wed Aug 13 00:04:54 2014 UTC
@@ -697,7 +697,7 @@
 // MemOperand represents a memory operand in a load or store instruction.
 class MemOperand {
  public:
-  inline explicit MemOperand();
+  inline MemOperand();
   inline explicit MemOperand(Register base,
                              ptrdiff_t offset = 0,
                              AddrMode addrmode = Offset);
=======================================
--- /trunk/src/arm64/instrument-arm64.h Mon Jun 23 08:21:41 2014 UTC
+++ /trunk/src/arm64/instrument-arm64.h Wed Aug 13 00:04:54 2014 UTC
@@ -32,7 +32,7 @@

 class Counter {
  public:
-  Counter(const char* name, CounterType type = Gauge);
+  explicit Counter(const char* name, CounterType type = Gauge);

   void Increment();
   void Enable();
=======================================
--- /trunk/src/arm64/lithium-arm64.h    Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/arm64/lithium-arm64.h    Wed Aug 13 00:04:54 2014 UTC
@@ -452,7 +452,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

@@ -943,7 +943,7 @@

 class LCheckMaps V8_FINAL : public LTemplateInstruction<0, 1, 1> {
  public:
-  LCheckMaps(LOperand* value = NULL, LOperand* temp = NULL) {
+  explicit LCheckMaps(LOperand* value = NULL, LOperand* temp = NULL) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
=======================================
--- /trunk/src/arm64/macro-assembler-arm64.h    Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/arm64/macro-assembler-arm64.h    Wed Aug 13 00:04:54 2014 UTC
@@ -2201,7 +2201,7 @@
 // emitted is what you specified when creating the scope.
 class InstructionAccurateScope BASE_EMBEDDED {
  public:
-  InstructionAccurateScope(MacroAssembler* masm, size_t count = 0)
+  explicit InstructionAccurateScope(MacroAssembler* masm, size_t count = 0)
       : masm_(masm)
 #ifdef DEBUG
         ,
=======================================
--- /trunk/src/base/platform/platform.h Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/base/platform/platform.h Wed Aug 13 00:04:54 2014 UTC
@@ -428,7 +428,7 @@
   class Options {
    public:
     Options() : name_("v8:<unknown>"), stack_size_(0) {}
-    Options(const char* name, int stack_size = 0)
+    explicit Options(const char* name, int stack_size = 0)
         : name_(name), stack_size_(stack_size) {}

     const char* name() const { return name_; }
=======================================
--- /trunk/src/bootstrapper.cc  Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/bootstrapper.cc  Wed Aug 13 00:04:54 2014 UTC
@@ -2655,19 +2655,17 @@
                                   NONE).Assert();

     // Initialize trigonometric lookup tables and constants.
-    const int constants_size =
-        ARRAY_SIZE(fdlibm::TrigonometricConstants::constants);
+ const int constants_size = ARRAY_SIZE(fdlibm::MathConstants::constants);
     const int table_num_bytes = constants_size * kDoubleSize;
     v8::Local<v8::ArrayBuffer> trig_buffer = v8::ArrayBuffer::New(
         reinterpret_cast<v8::Isolate*>(isolate),
-        const_cast<double*>(fdlibm::TrigonometricConstants::constants),
-        table_num_bytes);
+ const_cast<double*>(fdlibm::MathConstants::constants), table_num_bytes);
     v8::Local<v8::Float64Array> trig_table =
         v8::Float64Array::New(trig_buffer, 0, constants_size);

     Runtime::DefineObjectProperty(
         builtins,
-        factory()->InternalizeOneByteString(STATIC_ASCII_VECTOR("kTrig")),
+        factory()->InternalizeOneByteString(STATIC_ASCII_VECTOR("kMath")),
         Utils::OpenHandle(*trig_table), NONE).Assert();
   }

=======================================
--- /trunk/src/code-stubs.h     Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/code-stubs.h     Wed Aug 13 00:04:54 2014 UTC
@@ -437,7 +437,8 @@
     INITIALIZED
   };

- HydrogenCodeStub(Isolate* isolate, InitializationState state = INITIALIZED)
+  explicit HydrogenCodeStub(Isolate* isolate,
+                            InitializationState state = INITIALIZED)
       : CodeStub(isolate) {
     is_uninitialized_ = (state == UNINITIALIZED);
   }
=======================================
--- /trunk/src/compiler/node-properties-inl.h   Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/compiler/node-properties-inl.h   Wed Aug 13 00:04:54 2014 UTC
@@ -23,12 +23,11 @@
 // Inputs are always arranged in order as follows:
 //     0 [ values, context, effects, control ] node->InputCount()

+inline int NodeProperties::FirstValueIndex(Node* node) { return 0; }

-inline int NodeProperties::GetContextIndex(Node* node) {
+inline int NodeProperties::FirstContextIndex(Node* node) {
   return PastValueIndex(node);
 }
-
-inline int NodeProperties::FirstValueIndex(Node* node) { return 0; }

 inline int NodeProperties::FirstEffectIndex(Node* node) {
   return PastContextIndex(node);
@@ -45,7 +44,7 @@
 }

 inline int NodeProperties::PastContextIndex(Node* node) {
-  return GetContextIndex(node) +
+  return FirstContextIndex(node) +
          OperatorProperties::GetContextInputCount(node->op());
 }

@@ -71,7 +70,7 @@

 inline Node* NodeProperties::GetContextInput(Node* node) {
   DCHECK(OperatorProperties::HasContextInput(node->op()));
-  return node->InputAt(GetContextIndex(node));
+  return node->InputAt(FirstContextIndex(node));
 }

 inline Node* NodeProperties::GetEffectInput(Node* node, int index) {
@@ -106,7 +105,7 @@

 inline bool NodeProperties::IsContextEdge(Node::Edge edge) {
   Node* node = edge.from();
-  return IsInputRange(edge, GetContextIndex(node),
+  return IsInputRange(edge, FirstContextIndex(node),
OperatorProperties::GetContextInputCount(node->op()));
 }

@@ -134,13 +133,14 @@
// -----------------------------------------------------------------------------
 // Miscellaneous mutators.

+inline void NodeProperties::ReplaceControlInput(Node* node, Node* control) {
+  node->ReplaceInput(FirstControlIndex(node), control);
+}
+
 inline void NodeProperties::ReplaceEffectInput(Node* node, Node* effect,
                                                int index) {
   DCHECK(index < OperatorProperties::GetEffectInputCount(node->op()));
-  return node->ReplaceInput(
-      OperatorProperties::GetValueInputCount(node->op()) +
-          OperatorProperties::GetContextInputCount(node->op()) + index,
-      effect);
+  return node->ReplaceInput(FirstEffectIndex(node) + index, effect);
 }

 inline void NodeProperties::RemoveNonValueInputs(Node* node) {
=======================================
--- /trunk/src/compiler/node-properties.h       Mon Aug 11 12:49:03 2014 UTC
+++ /trunk/src/compiler/node-properties.h       Wed Aug 13 00:04:54 2014 UTC
@@ -5,15 +5,13 @@
 #ifndef V8_COMPILER_NODE_PROPERTIES_H_
 #define V8_COMPILER_NODE_PROPERTIES_H_

-#include "src/v8.h"
-
+#include "src/compiler/node.h"
 #include "src/types.h"

 namespace v8 {
 namespace internal {
 namespace compiler {

-class Node;
 class Operator;

// A facade that simplifies access to the different kinds of inputs to a node.
@@ -31,6 +29,7 @@

   static inline bool IsControl(Node* node);

+  static inline void ReplaceControlInput(Node* node, Node* control);
   static inline void ReplaceEffectInput(Node* node, Node* effect,
                                         int index = 0);
   static inline void RemoveNonValueInputs(Node* node);
@@ -38,9 +37,9 @@
   static inline Bounds GetBounds(Node* node);
   static inline void SetBounds(Node* node, Bounds bounds);

-  static inline int GetContextIndex(Node* node);
-
+ private:
   static inline int FirstValueIndex(Node* node);
+  static inline int FirstContextIndex(Node* node);
   static inline int FirstEffectIndex(Node* node);
   static inline int FirstControlIndex(Node* node);
   static inline int PastValueIndex(Node* node);
@@ -50,8 +49,9 @@

   static inline bool IsInputRange(Node::Edge edge, int first, int count);
 };
-}
-}
-}  // namespace v8::internal::compiler
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8

 #endif  // V8_COMPILER_NODE_PROPERTIES_H_
=======================================
--- /trunk/src/compiler/pipeline.cc     Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/compiler/pipeline.cc     Wed Aug 13 00:04:54 2014 UTC
@@ -14,6 +14,7 @@
 #include "src/compiler/js-context-specialization.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-typed-lowering.h"
+#include "src/compiler/phi-reducer.h"
 #include "src/compiler/register-allocator.h"
 #include "src/compiler/schedule.h"
 #include "src/compiler/scheduler.h"
@@ -22,6 +23,7 @@
 #include "src/compiler/verifier.h"
 #include "src/hydrogen.h"
 #include "src/ostreams.h"
+#include "src/utils.h"

 namespace v8 {
 namespace internal {
@@ -73,9 +75,25 @@

 void Pipeline::VerifyAndPrintGraph(Graph* graph, const char* phase) {
   if (FLAG_trace_turbo) {
+    char buffer[256];
+    Vector<char> filename(buffer, sizeof(buffer));
+    SmartArrayPointer<char> functionname =
+        info_->shared_info()->DebugName()->ToCString();
+    if (strlen(functionname.get()) > 0) {
+      SNPrintF(filename, "turbo-%s-%s.dot", functionname.get(), phase);
+    } else {
+ SNPrintF(filename, "turbo-%p-%s.dot", static_cast<void*>(info_), phase);
+    }
+ std::replace(filename.start(), filename.start() + filename.length(), ' ',
+                 '_');
+    FILE* file = base::OS::FOpen(filename.start(), "w+");
+    OFStream of(file);
+    of << AsDOT(*graph);
+    fclose(file);
+
     OFStream os(stdout);
-    os << "-- " << phase << " graph -----------------------------------\n"
-       << AsDOT(*graph);
+    os << "-- " << phase << " graph printed to file " << filename.start()
+       << "\n";
   }
   if (VerifyGraphs()) Verifier::Run(graph);
 }
@@ -144,6 +162,17 @@
     graph_builder.CreateGraph();
     context_node = graph_builder.GetFunctionContext();
   }
+  {
+    PhaseStats phi_reducer_stats(info(), PhaseStats::CREATE_GRAPH,
+                                 "phi reduction");
+    PhiReducer phi_reducer;
+    GraphReducer graph_reducer(&graph);
+    graph_reducer.AddReducer(&phi_reducer);
+    graph_reducer.ReduceGraph();
+ // TODO(mstarzinger): Running reducer once ought to be enough for everyone.
+    graph_reducer.ReduceGraph();
+    graph_reducer.ReduceGraph();
+  }

   VerifyAndPrintGraph(&graph, "Initial untyped");

=======================================
--- /trunk/src/compiler/representation-change.h Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/compiler/representation-change.h Wed Aug 13 00:04:54 2014 UTC
@@ -88,7 +88,7 @@
     } else if (use_type & rFloat64) {
       return GetFloat64RepresentationFor(node, output_type);
     } else if (use_type & rWord32) {
-      return GetWord32RepresentationFor(node, output_type);
+ return GetWord32RepresentationFor(node, output_type, use_type & tUint32);
     } else if (use_type & rBit) {
       return GetBitRepresentationFor(node, output_type);
     } else if (use_type & rWord64) {
@@ -165,10 +165,8 @@
     if (output_type & rWord32) {
       if (output_type & tUint32) {
         op = machine()->ChangeUint32ToFloat64();
-      } else if (output_type & tInt32) {
+      } else {
         op = machine()->ChangeInt32ToFloat64();
-      } else {
-        return TypeError(node, output_type, rFloat64);
       }
     } else if (output_type & rTagged) {
       op = simplified()->ChangeTaggedToFloat64();
@@ -178,22 +176,23 @@
     return jsgraph()->graph()->NewNode(op, node);
   }

-  Node* GetWord32RepresentationFor(Node* node, RepTypeUnion output_type) {
+  Node* GetWord32RepresentationFor(Node* node, RepTypeUnion output_type,
+                                   bool use_unsigned) {
     // Eagerly fold representation changes for constants.
     switch (node->opcode()) {
       case IrOpcode::kInt32Constant:
         return node;  // No change necessary.
       case IrOpcode::kNumberConstant:
       case IrOpcode::kFloat64Constant: {
-        if (output_type & tUint32) {
-          int32_t value = static_cast<int32_t>(
-              static_cast<uint32_t>(ValueOf<double>(node->op())));
-          return jsgraph()->Int32Constant(value);
-        } else if (output_type & tInt32) {
-          int32_t value = FastD2I(ValueOf<double>(node->op()));
-          return jsgraph()->Int32Constant(value);
+        double value = ValueOf<double>(node->op());
+        if (value < 0) {
+          DCHECK(IsInt32Double(value));
+          int32_t iv = static_cast<int32_t>(value);
+          return jsgraph()->Int32Constant(iv);
         } else {
-          return TypeError(node, output_type, rWord32);
+          DCHECK(IsUint32Double(value));
+          int32_t iv = static_cast<int32_t>(static_cast<uint32_t>(value));
+          return jsgraph()->Int32Constant(iv);
         }
       }
       default:
@@ -202,20 +201,16 @@
     // Select the correct X -> Word32 operator.
     Operator* op = NULL;
     if (output_type & rFloat64) {
-      if (output_type & tUint32) {
+      if (output_type & tUint32 || use_unsigned) {
         op = machine()->ChangeFloat64ToUint32();
-      } else if (output_type & tInt32) {
+      } else {
         op = machine()->ChangeFloat64ToInt32();
-      } else {
-        return TypeError(node, output_type, rWord32);
       }
     } else if (output_type & rTagged) {
-      if (output_type & tUint32) {
+      if (output_type & tUint32 || use_unsigned) {
         op = simplified()->ChangeTaggedToUint32();
-      } else if (output_type & tInt32) {
+      } else {
         op = simplified()->ChangeTaggedToInt32();
-      } else {
-        return TypeError(node, output_type, rWord32);
       }
     } else if (output_type & rBit) {
       return node;  // Sloppy comparison -> word32.
=======================================
--- /trunk/src/effects.h        Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/effects.h        Wed Aug 13 00:04:54 2014 UTC
@@ -33,7 +33,7 @@
   Bounds bounds;

   Effect() : modality(DEFINITE) {}
-  Effect(Bounds b, Modality m = DEFINITE) : modality(m), bounds(b) {}
+ explicit Effect(Bounds b, Modality m = DEFINITE) : modality(m), bounds(b) {}

   // The unknown effect.
   static Effect Unknown(Zone* zone) {
=======================================
--- /trunk/src/factory.cc       Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/factory.cc       Wed Aug 13 00:04:54 2014 UTC
@@ -662,6 +662,14 @@
   symbol->set_is_private(true);
   return symbol;
 }
+
+
+Handle<Symbol> Factory::NewPrivateOwnSymbol() {
+  Handle<Symbol> symbol = NewSymbol();
+  symbol->set_is_private(true);
+  symbol->set_is_own(true);
+  return symbol;
+}


 Handle<Context> Factory::NewNativeContext() {
=======================================
--- /trunk/src/factory.h        Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/factory.h        Wed Aug 13 00:04:54 2014 UTC
@@ -221,6 +221,7 @@
   // Create a symbol.
   Handle<Symbol> NewSymbol();
   Handle<Symbol> NewPrivateSymbol();
+  Handle<Symbol> NewPrivateOwnSymbol();

   // Create a global (but otherwise uninitialized) context.
   Handle<Context> NewNativeContext();
=======================================
--- /trunk/src/globals.h        Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/globals.h        Wed Aug 13 00:04:54 2014 UTC
@@ -31,8 +31,7 @@
 #else
 #define V8_TURBOFAN_BACKEND 0
 #endif
-#if V8_TURBOFAN_BACKEND && !V8_TARGET_ARCH_ARM64 && \
-    !(V8_OS_WIN && V8_TARGET_ARCH_X64)
+#if V8_TURBOFAN_BACKEND && !(V8_OS_WIN && V8_TARGET_ARCH_X64)
 #define V8_TURBOFAN_TARGET 1
 #else
 #define V8_TURBOFAN_TARGET 0
=======================================
--- /trunk/src/heap/heap.cc     Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/heap/heap.cc     Wed Aug 13 00:04:54 2014 UTC
@@ -2834,7 +2834,7 @@

   // Allocate the dictionary of intrinsic function names.
   Handle<NameDictionary> intrinsic_names =
-      NameDictionary::New(isolate(), Runtime::kNumFunctions);
+      NameDictionary::New(isolate(), Runtime::kNumFunctions, TENURED);
   Runtime::InitializeIntrinsicFunctionNames(isolate(), intrinsic_names);
   set_intrinsic_function_names(*intrinsic_names);

=======================================
--- /trunk/src/hydrogen-instructions.h  Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/hydrogen-instructions.h  Wed Aug 13 00:04:54 2014 UTC
@@ -551,7 +551,7 @@
     return IsShl() || IsShr() || IsSar();
   }

-  HValue(HType type = HType::Tagged())
+  explicit HValue(HType type = HType::Tagged())
       : block_(NULL),
         id_(kNoNumber),
         type_(type),
@@ -1205,7 +1205,7 @@
   DECLARE_ABSTRACT_INSTRUCTION(Instruction)

  protected:
-  HInstruction(HType type = HType::Tagged())
+  explicit HInstruction(HType type = HType::Tagged())
       : HValue(type),
         next_(NULL),
         previous_(NULL),
@@ -1238,7 +1238,8 @@
   }

  protected:
- HTemplateInstruction(HType type = HType::Tagged()) : HInstruction(type) {}
+  explicit HTemplateInstruction(HType type = HType::Tagged())
+      : HInstruction(type) {}

virtual void InternalSetOperandAt(int i, HValue* value) V8_FINAL V8_OVERRIDE {
     inputs_[i] = value;
@@ -1598,7 +1599,7 @@

 class HUnaryOperation : public HTemplateInstruction<1> {
  public:
-  HUnaryOperation(HValue* value, HType type = HType::Tagged())
+  explicit HUnaryOperation(HValue* value, HType type = HType::Tagged())
       : HTemplateInstruction<1>(type) {
     SetOperandAt(0, value);
   }
@@ -2716,7 +2717,7 @@
   }

  private:
-  HLoadRoot(Heap::RootListIndex index, HType type = HType::Tagged())
+ explicit HLoadRoot(Heap::RootListIndex index, HType type = HType::Tagged())
       : HTemplateInstruction<0>(type), index_(index) {
     SetFlag(kUseGVN);
     // TODO(bmeurer): We'll need kDependsOnRoots once we add the
@@ -3706,7 +3707,8 @@

  private:
   friend class HGraph;
- HConstant(Handle<Object> handle, Representation r = Representation::None());
+  explicit HConstant(Handle<Object> handle,
+                     Representation r = Representation::None());
   HConstant(int32_t value,
             Representation r = Representation::None(),
             bool is_not_in_new_space = true,
=======================================
--- /trunk/src/hydrogen.cc      Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/hydrogen.cc      Wed Aug 13 00:04:54 2014 UTC
@@ -7439,8 +7439,8 @@

 class FunctionSorter {
  public:
-  FunctionSorter(int index = 0, int ticks = 0, int size = 0)
-      : index_(index), ticks_(ticks), size_(size) { }
+  explicit FunctionSorter(int index = 0, int ticks = 0, int size = 0)
+      : index_(index), ticks_(ticks), size_(size) {}

   int index() const { return index_; }
   int ticks() const { return ticks_; }
=======================================
--- /trunk/src/ia32/lithium-ia32.h      Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/ia32/lithium-ia32.h      Wed Aug 13 00:04:54 2014 UTC
@@ -409,7 +409,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

=======================================
--- /trunk/src/interpreter-irregexp.cc  Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/interpreter-irregexp.cc  Wed Aug 13 00:04:54 2014 UTC
@@ -136,9 +136,7 @@
 // matching terminates.
 class BacktrackStack {
  public:
-  explicit BacktrackStack() {
-    data_ = NewArray<int>(kBacktrackStackSize);
-  }
+  BacktrackStack() { data_ = NewArray<int>(kBacktrackStackSize); }

   ~BacktrackStack() {
     DeleteArray(data_);
=======================================
--- /trunk/src/libplatform/worker-thread.cc     Tue Jul  1 11:58:10 2014 UTC
+++ /trunk/src/libplatform/worker-thread.cc     Wed Aug 13 00:04:54 2014 UTC
@@ -11,7 +11,7 @@
 namespace platform {

 WorkerThread::WorkerThread(TaskQueue* queue)
-    : Thread("V8 WorkerThread"), queue_(queue) {
+    : Thread(Options("V8 WorkerThread")), queue_(queue) {
   Start();
 }

=======================================
--- /trunk/src/log.cc   Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/log.cc   Wed Aug 13 00:04:54 2014 UTC
@@ -693,7 +693,7 @@
 // Profiler implementation.
 //
 Profiler::Profiler(Isolate* isolate)
-    : base::Thread("v8:Profiler"),
+    : base::Thread(Options("v8:Profiler")),
       isolate_(isolate),
       head_(0),
       tail_(0),
@@ -701,8 +701,7 @@
       buffer_semaphore_(0),
       engaged_(false),
       running_(false),
-      paused_(false) {
-}
+      paused_(false) {}


 void Profiler::Engage() {
=======================================
--- /trunk/src/lookup.h Thu Aug  7 08:39:21 2014 UTC
+++ /trunk/src/lookup.h Wed Aug 13 00:04:54 2014 UTC
@@ -47,7 +47,7 @@
   LookupIterator(Handle<Object> receiver,
                  Handle<Name> name,
                  Configuration configuration = CHECK_ALL)
-      : configuration_(configuration),
+      : configuration_(ComputeConfiguration(configuration, name)),
         state_(NOT_FOUND),
         property_kind_(DATA),
         property_encoding_(DESCRIPTOR),
@@ -66,7 +66,7 @@
                  Handle<Name> name,
                  Handle<JSReceiver> holder,
                  Configuration configuration = CHECK_ALL)
-      : configuration_(configuration),
+      : configuration_(ComputeConfiguration(configuration, name)),
         state_(NOT_FOUND),
         property_kind_(DATA),
         property_encoding_(DESCRIPTOR),
@@ -186,6 +186,15 @@
     DCHECK_EQ(DICTIONARY, property_encoding_);
     return number_;
   }
+
+  static Configuration ComputeConfiguration(
+      Configuration configuration, Handle<Name> name) {
+    if (name->IsOwn()) {
+      return static_cast<Configuration>(configuration & CHECK_OWN);
+    } else {
+      return configuration;
+    }
+  }

   Configuration configuration_;
   State state_;
=======================================
--- /trunk/src/macro-assembler.h        Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/macro-assembler.h        Wed Aug 13 00:04:54 2014 UTC
@@ -47,42 +47,42 @@
 #include "src/assembler.h"
 #include "src/x64/assembler-x64.h"
 #include "src/x64/assembler-x64-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
+#include "src/code.h"  // NOLINT, must be after assembler_*.h
 #include "src/x64/macro-assembler-x64.h"
 #elif V8_TARGET_ARCH_ARM64
 #include "src/arm64/constants-arm64.h"
 #include "src/assembler.h"
 #include "src/arm64/assembler-arm64.h"  // NOLINT
 #include "src/arm64/assembler-arm64-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
-#include "src/arm64/macro-assembler-arm64.h"
+#include "src/code.h"  // NOLINT, must be after assembler_*.h
+#include "src/arm64/macro-assembler-arm64.h"  // NOLINT
 #include "src/arm64/macro-assembler-arm64-inl.h"
 #elif V8_TARGET_ARCH_ARM
 #include "src/arm/constants-arm.h"
 #include "src/assembler.h"
 #include "src/arm/assembler-arm.h"  // NOLINT
 #include "src/arm/assembler-arm-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
-#include "src/arm/macro-assembler-arm.h"
+#include "src/code.h" // NOLINT, must be after assembler_*.h
+#include "src/arm/macro-assembler-arm.h"  // NOLINT
 #elif V8_TARGET_ARCH_MIPS
 #include "src/mips/constants-mips.h"
-#include "src/assembler.h"
+#include "src/assembler.h"            // NOLINT
 #include "src/mips/assembler-mips.h"  // NOLINT
 #include "src/mips/assembler-mips-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
+#include "src/code.h"  // NOLINT, must be after assembler_*.h
 #include "src/mips/macro-assembler-mips.h"
 #elif V8_TARGET_ARCH_MIPS64
 #include "src/mips64/constants-mips64.h"
-#include "src/assembler.h"
+#include "src/assembler.h"                // NOLINT
 #include "src/mips64/assembler-mips64.h"  // NOLINT
 #include "src/mips64/assembler-mips64-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
+#include "src/code.h"  // NOLINT, must be after assembler_*.h
 #include "src/mips64/macro-assembler-mips64.h"
 #elif V8_TARGET_ARCH_X87
 #include "src/assembler.h"
 #include "src/x87/assembler-x87.h"
 #include "src/x87/assembler-x87-inl.h"
-#include "src/code.h"  // must be after assembler_*.h
+#include "src/code.h"  // NOLINT, must be after assembler_*.h
 #include "src/x87/macro-assembler-x87.h"
 #else
 #error Unsupported target architecture.
=======================================
--- /trunk/src/math.js  Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/math.js  Wed Aug 13 00:04:54 2014 UTC
@@ -346,26 +346,6 @@
     return MathExp(x) - 1;
   }
 }
-
-// ES6 draft 09-27-13, section 20.2.2.20.
-// Use Taylor series to approximate. With y = x + 1;
-// log(y) at 1 == log(1) + log'(1)(y-1)/1! + log''(1)(y-1)^2/2! + ...
-//             == 0 + x - x^2/2 + x^3/3 ...
-// The closer x is to 0, the fewer terms are required.
-function MathLog1p(x) {
-  if (!IS_NUMBER(x)) x = NonNumberToNumber(x);
-  var xabs = MathAbs(x);
-  if (xabs < 1E-7) {
-    return x * (1 - x * (1/2));
-  } else if (xabs < 3E-5) {
-    return x * (1 - x * (1/2 - x * (1/3)));
-  } else if (xabs < 7E-3) {
-    return x * (1 - x * (1/2 - x * (1/3 - x * (1/4 -
-           x * (1/5 - x * (1/6 - x * (1/7)))))));
-  } else {  // Use regular log if not close enough to 0.
-    return MathLog(1 + x);
-  }
-}

 // -------------------------------------------------------------------

@@ -428,7 +408,7 @@
     "fround", MathFroundJS,
     "clz32", MathClz32,
     "cbrt", MathCbrt,
-    "log1p", MathLog1p,
+    "log1p", MathLog1p,    // implemented by third_party/fdlibm
     "expm1", MathExpm1
   ));

=======================================
--- /trunk/src/mips/lithium-mips.h      Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/mips/lithium-mips.h      Wed Aug 13 00:04:54 2014 UTC
@@ -411,7 +411,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

=======================================
--- /trunk/src/mips64/lithium-mips64.h  Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/mips64/lithium-mips64.h  Wed Aug 13 00:04:54 2014 UTC
@@ -410,7 +410,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

=======================================
--- /trunk/src/objects-inl.h    Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/objects-inl.h    Wed Aug 13 00:04:54 2014 UTC
@@ -3372,6 +3372,7 @@
 ACCESSORS(Symbol, name, Object, kNameOffset)
 ACCESSORS(Symbol, flags, Smi, kFlagsOffset)
 BOOL_ACCESSORS(Symbol, flags, is_private, kPrivateBit)
+BOOL_ACCESSORS(Symbol, flags, is_own, kOwnBit)


 bool String::Equals(String* other) {
@@ -6495,6 +6496,10 @@
   // Slow case: compute hash code and set it. Has to be a string.
   return String::cast(this)->ComputeAndSetHash();
 }
+
+bool Name::IsOwn() {
+  return this->IsSymbol() && Symbol::cast(this)->is_own();
+}


 StringHasher::StringHasher(int length, uint32_t seed)
=======================================
--- /trunk/src/objects-printer.cc       Fri Aug  8 15:46:17 2014 UTC
+++ /trunk/src/objects-printer.cc       Wed Aug 13 00:04:54 2014 UTC
@@ -430,7 +430,8 @@
   HeapObject::PrintHeader(os, "Symbol");
   os << " - hash: " << Hash();
   os << "\n - name: " << Brief(name());
-  os << " - private: " << is_private();
+  os << "\n - private: " << is_private();
+  os << "\n - own: " << is_own();
   os << "\n";
 }

=======================================
--- /trunk/src/objects.cc       Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/objects.cc       Wed Aug 13 00:04:54 2014 UTC
@@ -3560,6 +3560,11 @@

 void JSObject::LookupRealNamedPropertyInPrototypes(Handle<Name> name,
                                                    LookupResult* result) {
+  if (name->IsOwn()) {
+    result->NotFound();
+    return;
+  }
+
   DisallowHeapAllocation no_gc;
   Isolate* isolate = GetIsolate();
for (PrototypeIterator iter(isolate, this); !iter.IsAtEnd(); iter.Advance()) {
@@ -6107,7 +6112,7 @@
   }

   js_object->LookupOwnRealNamedProperty(name, result);
-  if (result->IsFound() || !search_hidden_prototypes) return;
+ if (result->IsFound() || name->IsOwn() || !search_hidden_prototypes) return;

   PrototypeIterator iter(GetIsolate(), js_object);
   if (!iter.GetCurrent()->IsJSReceiver()) return;
@@ -6126,6 +6131,10 @@
        !iter.IsAtEnd(); iter.Advance()) {
     JSReceiver::cast(iter.GetCurrent())->LookupOwn(name, result, false);
     if (result->IsFound()) return;
+    if (name->IsOwn()) {
+      result->NotFound();
+      return;
+    }
   }
   result->NotFound();
 }
=======================================
--- /trunk/src/objects.h        Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/objects.h        Wed Aug 13 00:04:54 2014 UTC
@@ -8954,6 +8954,9 @@
   // Conversion.
   inline bool AsArrayIndex(uint32_t* index);

+  // Whether name can only name own properties.
+  inline bool IsOwn();
+
   DECLARE_CAST(Name)

   DECLARE_PRINTER(Name)
@@ -9029,6 +9032,10 @@
   // [is_private]: whether this is a private symbol.
   DECL_BOOLEAN_ACCESSORS(is_private)

+ // [is_own]: whether this is an own symbol, that is, only used to designate
+  // own properties of objects.
+  DECL_BOOLEAN_ACCESSORS(is_own)
+
   DECLARE_CAST(Symbol)

   // Dispatched behavior.
@@ -9044,6 +9051,7 @@

  private:
   static const int kPrivateBit = 0;
+  static const int kOwnBit = 1;

   DISALLOW_IMPLICIT_CONSTRUCTORS(Symbol);
 };
=======================================
--- /trunk/src/optimizing-compiler-thread.h     Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/optimizing-compiler-thread.h     Wed Aug 13 00:04:54 2014 UTC
@@ -22,22 +22,22 @@

 class OptimizingCompilerThread : public base::Thread {
  public:
-  explicit OptimizingCompilerThread(Isolate *isolate) :
-      Thread("OptimizingCompilerThread"),
+  explicit OptimizingCompilerThread(Isolate* isolate)
+      : Thread(Options("OptimizingCompilerThread")),
 #ifdef DEBUG
-      thread_id_(0),
+        thread_id_(0),
 #endif
-      isolate_(isolate),
-      stop_semaphore_(0),
-      input_queue_semaphore_(0),
-      input_queue_capacity_(FLAG_concurrent_recompilation_queue_length),
-      input_queue_length_(0),
-      input_queue_shift_(0),
-      osr_buffer_capacity_(FLAG_concurrent_recompilation_queue_length + 4),
-      osr_buffer_cursor_(0),
-      osr_hits_(0),
-      osr_attempts_(0),
-      blocked_jobs_(0) {
+        isolate_(isolate),
+        stop_semaphore_(0),
+        input_queue_semaphore_(0),
+        input_queue_capacity_(FLAG_concurrent_recompilation_queue_length),
+        input_queue_length_(0),
+        input_queue_shift_(0),
+ osr_buffer_capacity_(FLAG_concurrent_recompilation_queue_length + 4),
+        osr_buffer_cursor_(0),
+        osr_hits_(0),
+        osr_attempts_(0),
+        blocked_jobs_(0) {
     base::NoBarrier_Store(&stop_thread_,
                           static_cast<base::AtomicWord>(CONTINUE));
     input_queue_ = NewArray<OptimizedCompileJob*>(input_queue_capacity_);
=======================================
--- /trunk/src/runtime.cc       Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/runtime.cc       Wed Aug 13 00:04:54 2014 UTC
@@ -606,6 +606,17 @@
   if (name->IsString()) symbol->set_name(*name);
   return *symbol;
 }
+
+
+RUNTIME_FUNCTION(Runtime_CreatePrivateOwnSymbol) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, name, 0);
+  RUNTIME_ASSERT(name->IsString() || name->IsUndefined());
+  Handle<Symbol> symbol = isolate->factory()->NewPrivateOwnSymbol();
+  if (name->IsString()) symbol->set_name(*name);
+  return *symbol;
+}


 RUNTIME_FUNCTION(Runtime_CreateGlobalPrivateSymbol) {
=======================================
--- /trunk/src/runtime.h        Tue Aug 12 06:42:13 2014 UTC
+++ /trunk/src/runtime.h        Wed Aug 13 00:04:54 2014 UTC
@@ -260,6 +260,7 @@
   F(CreateSymbol, 1, 1)                                               \
   F(CreatePrivateSymbol, 1, 1)                                        \
   F(CreateGlobalPrivateSymbol, 1, 1)                                  \
+  F(CreatePrivateOwnSymbol, 1, 1)                                     \
   F(NewSymbolWrapper, 1, 1)                                           \
   F(SymbolDescription, 1, 1)                                          \
   F(SymbolRegistry, 0, 1)                                             \
=======================================
--- /trunk/src/splay-tree.h     Wed Jun  4 00:06:13 2014 UTC
+++ /trunk/src/splay-tree.h     Wed Aug 13 00:04:54 2014 UTC
@@ -35,8 +35,8 @@

   class Locator;

-  SplayTree(AllocationPolicy allocator = AllocationPolicy())
-      : root_(NULL), allocator_(allocator) { }
+  explicit SplayTree(AllocationPolicy allocator = AllocationPolicy())
+      : root_(NULL), allocator_(allocator) {}
   ~SplayTree();

   INLINE(void* operator new(size_t size,
=======================================
--- /trunk/src/unique.h Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/unique.h Wed Aug 13 00:04:54 2014 UTC
@@ -174,7 +174,7 @@
return PrintableUnique<T>(zone, reinterpret_cast<Address>(*handle), handle);
   }

-  const char* string() { return string_; }
+  const char* string() const { return string_; }

  private:
   const char* string_;
=======================================
--- /trunk/src/version.cc       Tue Aug 12 15:33:05 2014 UTC
+++ /trunk/src/version.cc       Wed Aug 13 00:04:54 2014 UTC
@@ -34,8 +34,8 @@
 // system so their names cannot be changed without changing the scripts.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     28
-#define BUILD_NUMBER      71
-#define PATCH_LEVEL       1
+#define BUILD_NUMBER      73
+#define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
 #define IS_CANDIDATE_VERSION 0
=======================================
--- /trunk/src/x64/lithium-x64.h        Tue Aug  5 00:05:55 2014 UTC
+++ /trunk/src/x64/lithium-x64.h        Wed Aug 13 00:04:54 2014 UTC
@@ -419,7 +419,7 @@

 class LDummy V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LDummy() { }
+  LDummy() {}
   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
 };

=======================================
***Additional files exist in this changeset.***

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