A64: Synchronize with r16024.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index 895b9849c97d36c16bb6ecdbd6c93f1eb951eb2c..4462d55462bda1f2cca4ec972f51aa1653fe0a70 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -316,7 +316,6 @@ class HGraph: public ZoneObject {
   HEnvironment* start_environment() const { return start_environment_; }
 
   void FinalizeUniqueValueIds();
-  void MarkDeoptimizeOnUndefined();
   bool ProcessArgumentsObject();
   void OrderBlocks();
   void AssignDominators();
@@ -368,7 +367,7 @@ class HGraph: public ZoneObject {
     return NULL;
   }
 
-  bool Optimize(SmartArrayPointer<char>* bailout_reason);
+  bool Optimize(BailoutReason* bailout_reason);
 
 #ifdef DEBUG
   void Verify(bool do_full_verify) const;
@@ -464,7 +463,6 @@ class HGraph: public ZoneObject {
     phase.Run();
   }
 
-  void RecursivelyMarkPhiDeoptimizeOnUndefined(HPhi* phi);
   void CheckForBackEdge(HBasicBlock* block, HBasicBlock* successor);
   void SetupInformativeDefinitionsInBlock(HBasicBlock* block);
   void SetupInformativeDefinitionsRecursively(HBasicBlock* block);
@@ -585,7 +583,7 @@ class HEnvironment: public ZoneObject {
     return result;
   }
 
-  HValue* LookupContext() const {
+  HValue* context() const {
     // Return first special.
     return Lookup(parameter_count());
   }
@@ -992,57 +990,205 @@ class HGraphBuilder {
   void Push(HValue* value) { environment()->Push(value); }
   HValue* Pop() { return environment()->Pop(); }
 
+  virtual HValue* context() = 0;
+
   // Adding instructions.
   HInstruction* AddInstruction(HInstruction* instr);
 
   template<class I>
-  I* Add() { return static_cast<I*>(AddInstruction(new(zone()) I())); }
+  HInstruction* NewUncasted() { return I::New(zone(), context()); }
+
+  template<class I>
+  I* New() { return I::cast(NewUncasted<I>()); }
+
+  template<class I>
+  HInstruction* AddUncasted() { return AddInstruction(NewUncasted<I>());}
+
+  template<class I>
+  I* Add() { return I::cast(AddUncasted<I>());}
+
+  template<class I, class P1>
+  HInstruction* NewUncasted(P1 p1) {
+    return I::New(zone(), context(), p1);
+  }
+
+  template<class I, class P1>
+  I* New(P1 p1) { return I::cast(NewUncasted<I>(p1)); }
+
+  template<class I, class P1>
+  HInstruction* AddUncasted(P1 p1) {
+    HInstruction* result = AddInstruction(NewUncasted<I>(p1));
+    // Specializations must have their parameters properly casted
+    // to avoid landing here.
+    ASSERT(!result->IsReturn() && !result->IsSimulate() &&
+           !result->IsDeoptimize());
+    return result;
+  }
 
   template<class I, class P1>
   I* Add(P1 p1) {
-    return static_cast<I*>(AddInstruction(new(zone()) I(p1)));
+    return I::cast(AddUncasted<I>(p1));
+  }
+
+  template<class I, class P1, class P2>
+  HInstruction* NewUncasted(P1 p1, P2 p2) {
+    return I::New(zone(), context(), p1, p2);
+  }
+
+  template<class I, class P1, class P2>
+  I* New(P1 p1, P2 p2) {
+    return I::cast(NewUncasted<I>(p1, p2));
+  }
+
+  template<class I, class P1, class P2>
+  HInstruction* AddUncasted(P1 p1, P2 p2) {
+    HInstruction* result = AddInstruction(NewUncasted<I>(p1, p2));
+    // Specializations must have their parameters properly casted
+    // to avoid landing here.
+    ASSERT(!result->IsSimulate());
+    return result;
   }
 
   template<class I, class P1, class P2>
   I* Add(P1 p1, P2 p2) {
-      return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2)));
+    return static_cast<I*>(AddUncasted<I>(p1, p2));
+  }
+
+  template<class I, class P1, class P2, class P3>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3) {
+    return I::New(zone(), context(), p1, p2, p3);
+  }
+
+  template<class I, class P1, class P2, class P3>
+  I* New(P1 p1, P2 p2, P3 p3) {
+    return I::cast(NewUncasted<I>(p1, p2, p3));
+  }
+
+  template<class I, class P1, class P2, class P3>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3));
   }
 
   template<class I, class P1, class P2, class P3>
   I* Add(P1 p1, P2 p2, P3 p3) {
-    return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2, p3)));
+    return I::cast(AddUncasted<I>(p1, p2, p3));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3, P4 p4) {
+    return I::New(zone(), context(), p1, p2, p3, p4);
+  }
+
+  template<class I, class P1, class P2, class P3, class P4>
+  I* New(P1 p1, P2 p2, P3 p3, P4 p4) {
+    return I::cast(NewUncasted<I>(p1, p2, p3, p4));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3, P4 p4) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3, p4));
   }
 
   template<class I, class P1, class P2, class P3, class P4>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4) {
-    return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2, p3, p4)));
+    return I::cast(AddUncasted<I>(p1, p2, p3, p4));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
+    return I::New(zone(), context(), p1, p2, p3, p4, p5);
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5>
+  I* New(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
+    return I::cast(NewUncasted<I>(p1, p2, p3, p4, p5));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5));
   }
 
   template<class I, class P1, class P2, class P3, class P4, class P5>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
-    return static_cast<I*>(AddInstruction(new(zone()) I(p1, p2, p3, p4, p5)));
+    return I::cast(AddUncasted<I>(p1, p2, p3, p4, p5));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5, class P6>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6) {
+    return I::New(zone(), context(), p1, p2, p3, p4, p5, p6);
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5, class P6>
+  I* New(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6) {
+    return I::cast(NewUncasted<I>(p1, p2, p3, p4, p5, p6));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4, class P5, class P6>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6));
   }
 
   template<class I, class P1, class P2, class P3, class P4, class P5, class P6>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6) {
-    return static_cast<I*>(AddInstruction(
-            new(zone()) I(p1, p2, p3, p4, p5, p6)));
+    return I::cast(AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6)));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4,
+      class P5, class P6, class P7>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7) {
+    return I::New(zone(), context(), p1, p2, p3, p4, p5, p6, p7);
+  }
+
+  template<class I, class P1, class P2, class P3, class P4,
+      class P5, class P6, class P7>
+      I* New(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7) {
+    return I::cast(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7));
+  }
+
+  template<class I, class P1, class P2, class P3,
+           class P4, class P5, class P6, class P7>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7));
   }
 
   template<class I, class P1, class P2, class P3,
            class P4, class P5, class P6, class P7>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7) {
-    return static_cast<I*>(AddInstruction(
-            new(zone()) I(p1, p2, p3, p4, p5, p6, p7)));
+    return I::cast(AddInstruction(NewUncasted<I>(p1, p2, p3, p4,
+                                                 p5, p6, p7)));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4,
+      class P5, class P6, class P7, class P8>
+  HInstruction* NewUncasted(P1 p1, P2 p2, P3 p3, P4 p4,
+                            P5 p5, P6 p6, P7 p7, P8 p8) {
+    return I::New(zone(), context(), p1, p2, p3, p4, p5, p6, p7, p8);
+  }
+
+  template<class I, class P1, class P2, class P3, class P4,
+      class P5, class P6, class P7, class P8>
+      I* New(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7, P8 p8) {
+    return I::cast(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7, p8));
+  }
+
+  template<class I, class P1, class P2, class P3, class P4,
+           class P5, class P6, class P7, class P8>
+  HInstruction* AddUncasted(P1 p1, P2 p2, P3 p3, P4 p4,
+                            P5 p5, P6 p6, P7 p7, P8 p8) {
+    return AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7, p8));
   }
 
   template<class I, class P1, class P2, class P3, class P4,
            class P5, class P6, class P7, class P8>
   I* Add(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5, P6 p6, P7 p7, P8 p8) {
-    return static_cast<I*>(AddInstruction(
-            new(zone()) I(p1, p2, p3, p4, p5, p6, p7, p8)));
+    return I::cast(
+        AddInstruction(NewUncasted<I>(p1, p2, p3, p4, p5, p6, p7, p8)));
   }
 
+  void AddSimulate(BailoutId id,
+                   RemovableSimulate removable = FIXED_SIMULATE);
+
   void IncrementInNoSideEffectsScope() {
     no_side_effects_scope_count_++;
   }
@@ -1091,16 +1237,6 @@ class HGraphBuilder {
       LoadKeyedHoleMode load_mode,
       KeyedAccessStoreMode store_mode);
 
-  HLoadNamedField* AddLoad(
-      HValue *object,
-      HObjectAccess access,
-      HValue *typecheck = NULL);
-
-  HLoadNamedField* BuildLoadNamedField(
-      HValue* object,
-      HObjectAccess access,
-      Representation representation);
-
   HInstruction* AddExternalArrayElementAccess(
       HValue* external_elements,
       HValue* checked_key,
@@ -1119,13 +1255,16 @@ class HGraphBuilder {
       LoadKeyedHoleMode load_mode,
       KeyedAccessStoreMode store_mode);
 
-  HLoadNamedField* BuildLoadNamedField(HValue* object, HObjectAccess access);
-  HStoreNamedField* AddStore(HValue *object, HObjectAccess access, HValue *val);
+  HLoadNamedField* BuildLoadNamedField(
+      HValue* object,
+      HObjectAccess access,
+      HValue* typecheck = NULL);
+  HInstruction* BuildLoadStringLength(HValue* object, HValue* typecheck = NULL);
   HStoreNamedField* AddStoreMapConstant(HValue *object, Handle<Map>);
   HLoadNamedField* AddLoadElements(HValue *object, HValue *typecheck = NULL);
   HLoadNamedField* AddLoadFixedArrayLength(HValue *object);
 
-  HValue* AddLoadJSBuiltin(Builtins::JavaScript builtin, HValue* context);
+  HValue* AddLoadJSBuiltin(Builtins::JavaScript builtin);
 
   HValue* TruncateToNumber(HValue* value, Handle<Type>* expected);
 
@@ -1133,6 +1272,9 @@ class HGraphBuilder {
 
   void FinishExitWithHardDeoptimization(HBasicBlock* continuation);
 
+  void AddIncrementCounter(StatsCounter* counter,
+                           HValue* context);
+
   class IfBuilder {
    public:
     explicit IfBuilder(HGraphBuilder* builder,
@@ -1313,8 +1455,7 @@ class HGraphBuilder {
     HGraphBuilder* builder_;
   };
 
-  HValue* BuildNewElementsCapacity(HValue* context,
-                                   HValue* old_capacity);
+  HValue* BuildNewElementsCapacity(HValue* old_capacity);
 
   void BuildNewSpaceArrayCheck(HValue* length,
                                ElementsKind kind);
@@ -1348,7 +1489,7 @@ class HGraphBuilder {
       return JSArray::kPreallocatedArrayElements;
     }
 
-    HValue* EmitMapCode(HValue* context);
+    HValue* EmitMapCode();
     HValue* EmitInternalMapCode();
     HValue* EstablishEmptyArrayAllocationSize();
     HValue* EstablishAllocationSize(HValue* length_node);
@@ -1363,16 +1504,14 @@ class HGraphBuilder {
     HInnerAllocatedObject* elements_location_;
   };
 
-  HValue* BuildAllocateElements(HValue* context,
-                                ElementsKind kind,
+  HValue* BuildAllocateElements(ElementsKind kind,
                                 HValue* capacity);
 
   void BuildInitializeElementsHeader(HValue* elements,
                                      ElementsKind kind,
                                      HValue* capacity);
 
-  HValue* BuildAllocateElementsAndInitializeElementsHeader(HValue* context,
-                                                           ElementsKind kind,
+  HValue* BuildAllocateElementsAndInitializeElementsHeader(ElementsKind kind,
                                                            HValue* capacity);
 
   // array must have been allocated with enough room for
@@ -1393,22 +1532,19 @@ class HGraphBuilder {
                                     HValue* length,
                                     HValue* new_capacity);
 
-  void BuildFillElementsWithHole(HValue* context,
-                                 HValue* elements,
+  void BuildFillElementsWithHole(HValue* elements,
                                  ElementsKind elements_kind,
                                  HValue* from,
                                  HValue* to);
 
-  void BuildCopyElements(HValue* context,
-                         HValue* from_elements,
+  void BuildCopyElements(HValue* from_elements,
                          ElementsKind from_elements_kind,
                          HValue* to_elements,
                          ElementsKind to_elements_kind,
                          HValue* length,
                          HValue* capacity);
 
-  HValue* BuildCloneShallowArray(HContext* context,
-                                 HValue* boilerplate,
+  HValue* BuildCloneShallowArray(HValue* boilerplate,
                                  HValue* allocation_site,
                                  AllocationSiteMode mode,
                                  ElementsKind kind,
@@ -1427,8 +1563,8 @@ class HGraphBuilder {
                                        int previous_object_size,
                                        HValue* payload);
 
-  HInstruction* BuildGetNativeContext(HValue* context);
-  HInstruction* BuildGetArrayFunction(HValue* context);
+  HInstruction* BuildGetNativeContext();
+  HInstruction* BuildGetArrayFunction();
 
  private:
   HGraphBuilder();
@@ -1444,13 +1580,14 @@ class HGraphBuilder {
 
 
 template<>
-inline HDeoptimize* HGraphBuilder::Add(Deoptimizer::BailoutType type) {
+inline HInstruction* HGraphBuilder::AddUncasted<HDeoptimize>(
+    Deoptimizer::BailoutType type) {
   if (type == Deoptimizer::SOFT) {
     isolate()->counters()->soft_deopts_requested()->Increment();
     if (FLAG_always_opt) return NULL;
   }
   if (current_block()->IsDeoptimizing()) return NULL;
-  HDeoptimize* instr = new(zone()) HDeoptimize(type);
+  HDeoptimize* instr = New<HDeoptimize>(type);
   AddInstruction(instr);
   if (type == Deoptimizer::SOFT) {
     isolate()->counters()->soft_deopts_inserted()->Increment();
@@ -1462,8 +1599,16 @@ inline HDeoptimize* HGraphBuilder::Add(Deoptimizer::BailoutType type) {
 
 
 template<>
-inline HSimulate* HGraphBuilder::Add(BailoutId id,
-                                     RemovableSimulate removable) {
+inline HDeoptimize* HGraphBuilder::Add<HDeoptimize>(
+    Deoptimizer::BailoutType type) {
+  return static_cast<HDeoptimize*>(AddUncasted<HDeoptimize>(type));
+}
+
+
+template<>
+inline HInstruction* HGraphBuilder::AddUncasted<HSimulate>(
+    BailoutId id,
+    RemovableSimulate removable) {
   HSimulate* instr = current_block()->CreateSimulate(id, removable);
   AddInstruction(instr);
   return instr;
@@ -1471,26 +1616,46 @@ inline HSimulate* HGraphBuilder::Add(BailoutId id,
 
 
 template<>
-inline HSimulate* HGraphBuilder::Add(BailoutId id) {
-  return Add<HSimulate>(id, FIXED_SIMULATE);
+inline HInstruction* HGraphBuilder::NewUncasted<HLoadNamedField>(
+    HValue* object, HObjectAccess access) {
+  return NewUncasted<HLoadNamedField>(object, access,
+                                      static_cast<HValue*>(NULL));
 }
 
 
 template<>
-inline HReturn* HGraphBuilder::Add(HValue* value) {
-  HValue* context = environment()->LookupContext();
+inline HInstruction* HGraphBuilder::AddUncasted<HLoadNamedField>(
+    HValue* object, HObjectAccess access) {
+  return AddUncasted<HLoadNamedField>(object, access,
+                                      static_cast<HValue*>(NULL));
+}
+
+
+template<>
+inline HInstruction* HGraphBuilder::AddUncasted<HSimulate>(BailoutId id) {
+  return AddUncasted<HSimulate>(id, FIXED_SIMULATE);
+}
+
+
+template<>
+inline HInstruction* HGraphBuilder::AddUncasted<HReturn>(HValue* value) {
   int num_parameters = graph()->info()->num_parameters();
-  HValue* params = Add<HConstant>(num_parameters);
-  HReturn* return_instruction = new(graph()->zone())
-      HReturn(value, context, params);
+  HValue* params = AddUncasted<HConstant>(num_parameters);
+  HReturn* return_instruction = New<HReturn>(value, params);
   current_block()->FinishExit(return_instruction);
   return return_instruction;
 }
 
 
 template<>
-inline HReturn* HGraphBuilder::Add(HConstant* p1) {
-  return Add<HReturn>(static_cast<HValue*>(p1));
+inline HInstruction* HGraphBuilder::AddUncasted<HReturn>(HConstant* value) {
+  return AddUncasted<HReturn>(static_cast<HValue*>(value));
+}
+
+
+template<>
+inline HInstruction* HGraphBuilder::NewUncasted<HContext>() {
+  return HContext::New(zone());
 }
 
 
@@ -1559,7 +1724,9 @@ class HOptimizedGraphBuilder: public HGraphBuilder, public AstVisitor {
 
   bool inline_bailout() { return inline_bailout_; }
 
-  void Bailout(const char* reason);
+  HValue* context() { return environment()->context(); }
+
+  void Bailout(BailoutReason reason);
 
   HBasicBlock* CreateJoin(HBasicBlock* first,
                           HBasicBlock* second,
@@ -1834,8 +2001,7 @@ class HOptimizedGraphBuilder: public HGraphBuilder, public AstVisitor {
                                Expression* sub_expr,
                                NilValue nil);
 
-  HInstruction* BuildStringCharCodeAt(HValue* context,
-                                      HValue* string,
+  HInstruction* BuildStringCharCodeAt(HValue* string,
                                       HValue* index);
   HInstruction* BuildBinaryOperation(BinaryOperation* expr,
                                      HValue* left,
@@ -1891,9 +2057,6 @@ class HOptimizedGraphBuilder: public HGraphBuilder, public AstVisitor {
 
   void AddCheckMap(HValue* object, Handle<Map> map);
 
-  void AddCheckMapsWithTransitions(HValue* object,
-                                   Handle<Map> map);
-
   void BuildStoreNamed(Expression* expression,
                        BailoutId id,
                        int position,