Hydrogen stubs for array constructors

src/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 18 matching lines @@
 #define V8_HYDROGEN_H_
 
 #include "v8.h"
 
 #include "allocation.h"
 #include "ast.h"
 #include "compiler.h"
 #include "hydrogen-instructions.h"
 #include "type-info.h"
 #include "zone.h"
+#include "scopes.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class BitVector;
 class FunctionState;
 class HEnvironment;
 class HGraph;
 class HLoopInformation;
@@ skipping 826 matching lines @@
   void set_current_block(HBasicBlock* block) { current_block_ = block; }
   HEnvironment* environment() const {
     return current_block()->last_environment();
   }
   Zone* zone() const { return info_->zone(); }
   HGraph* graph() const { return graph_; }
   Isolate* isolate() const { return graph_->isolate(); }
 
   HGraph* CreateGraph();
 
+  // Bailout environment manipulation.
+  void Push(HValue* value) { environment()->Push(value); }
+  HValue* Pop() { return environment()->Pop(); }
+
   // Adding instructions.
   HInstruction* AddInstruction(HInstruction* instr);
   void AddSimulate(BailoutId id,
                    RemovableSimulate removable = FIXED_SIMULATE);
   HBoundsCheck* AddBoundsCheck(
       HValue* index,
       HValue* length,
       BoundsCheckKeyMode key_mode = DONT_ALLOW_SMI_KEY,
       Representation r = Representation::None());
 
@@ skipping 161 matching lines @@
    private:
     HGraphBuilder* builder_;
   };
 
   HValue* BuildNewElementsCapacity(HValue* context,
                                    HValue* old_capacity);
 
   void BuildNewSpaceArrayCheck(HValue* length,
                                ElementsKind kind);
 
+  class JSArrayBuilder {
+   public:
+    JSArrayBuilder(HGraphBuilder* builder,
+                   ElementsKind kind,
+                   HValue* allocation_site_payload);
+
+    HValue* AllocateEmptyArray();
+
+    HValue* EstablishAllocationSize(HValue* length_node);
+    HValue* AllocateArray(HValue* size_in_bytes, HValue* capacity,
+                          HValue* length_field, bool fill_with_hole);
+    HValue* GetElementsLocation() { return elements_location_; }
+
+   private:
+    Zone* zone() const { return builder_->zone(); }
+    int elements_size() const {
+      return IsFastDoubleElementsKind(kind_) ? kDoubleSize : kPointerSize;
+    }
+    HInstruction* AddInstruction(HInstruction* instr) {
+      return builder_->AddInstruction(instr);
+    }
+    void AddSimulate(RemovableSimulate removable = FIXED_SIMULATE) {
+      builder_->AddSimulate(BailoutId::StubEntry(), removable);
+    }
+    HGraphBuilder* builder() { return builder_; }
+    HGraph* graph() { return builder_->graph(); }
+    int initial_capacity() {
+      STATIC_ASSERT(JSArray::kPreallocatedArrayElements > 0);
+      return JSArray::kPreallocatedArrayElements;
+    }
+
+    HValue* EmitMapCode(HValue* context);
+    HValue* EstablishEmptyArrayAllocationSize();
+    void FillWithHole(HValue* capacity, bool nominally_empty);
+
+    HGraphBuilder* builder_;
+    ElementsKind kind_;
+    AllocationSiteMode mode_;
+    HValue* allocation_site_payload_;
+    HInnerAllocatedObject* elements_location_;
+  };
+
   HValue* BuildAllocateElements(HValue* context,
                                 ElementsKind kind,
                                 HValue* capacity);
 
   void BuildInitializeElements(HValue* elements,
                                ElementsKind kind,
                                HValue* capacity);
 
   HValue* BuildAllocateAndInitializeElements(HValue* context,
                                              ElementsKind kind,
@@ skipping 97 matching lines @@
   virtual bool BuildGraph();
 
   // Simple accessors.
   BreakAndContinueScope* break_scope() const { return break_scope_; }
   void set_break_scope(BreakAndContinueScope* head) { break_scope_ = head; }
 
   bool inline_bailout() { return inline_bailout_; }
 
   void AddSoftDeoptimize();
 
-  // Bailout environment manipulation.
-  void Push(HValue* value) { environment()->Push(value); }
-  HValue* Pop() { return environment()->Pop(); }
-
   void Bailout(const char* reason);
 
   HBasicBlock* CreateJoin(HBasicBlock* first,
                           HBasicBlock* second,
                           BailoutId join_id);
 
   TypeFeedbackOracle* oracle() const { return function_state()->oracle(); }
 
   FunctionState* function_state() const { return function_state_; }
 
@@ skipping 598 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_