Turbofan: Make type feedback vector a Node.

src/compiler/ast-graph-builder.h

 // 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_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/ast.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
@@ skipping 70 matching lines @@
 
   // Stack of control scopes currently entered by the visitor.
   ControlScope* execution_control_;
 
   // Stack of context objects pushed onto the chain by the visitor.
   ContextScope* execution_context_;
 
   // Nodes representing values in the activation record.
   SetOncePointer<Node> function_closure_;
   SetOncePointer<Node> function_context_;
+  SetOncePointer<Node> feedback_vector_;
 
   // Tracks how many try-blocks are currently entered.
   int try_catch_nesting_level_;
   int try_nesting_level_;
 
   // Temporary storage for building node input lists.
   int input_buffer_size_;
   Node** input_buffer_;
 
   // Control nodes that exit the function body.
@@ skipping 39 matching lines @@
 
   // Create the main graph body by visiting the AST.
   void CreateGraphBody(bool stack_check);
 
   // Create the node that represents the outer context of the function.
   void CreateFunctionContext(bool constant_context);
 
   // Get or create the node that represents the outer function closure.
   Node* GetFunctionClosure();
 
+  // Get or create the node that represents the functions type feedback vector.
+  Node* GetFeedbackVector();
+
   // Node creation helpers.
   Node* NewNode(const Operator* op, bool incomplete = false) {
     return MakeNode(op, 0, static_cast<Node**>(NULL), incomplete);
   }
 
   Node* NewNode(const Operator* op, Node* n1) {
     return MakeNode(op, 1, &n1, false);
   }
 
   Node* NewNode(const Operator* op, Node* n1, Node* n2) {
@@ skipping 64 matching lines @@
   void ClearNonLiveSlotsInFrameStates();
 
   // Helper to wrap a Handle<T> into a Unique<T>.
   template <class T>
   Unique<T> MakeUnique(Handle<T> object) {
     return Unique<T>::CreateUninitialized(object);
   }
 
   Node** EnsureInputBufferSize(int size);
 
-  // Named and keyed loads require a VectorSlotPair for successful lowering.
-  VectorSlotPair CreateVectorSlotPair(FeedbackVectorICSlot slot) const;
+  // Named and keyed loads require a ResolvedFeedbackSlot for successful
+  // lowering.
+  ResolvedFeedbackSlot ResolveFeedbackSlot(FeedbackVectorICSlot slot) const;
 
   // Determine which contexts need to be checked for extension objects that
   // might shadow the optimistic declaration of dynamic lookup variables.
   uint32_t ComputeBitsetForDynamicGlobal(Variable* variable);
   uint32_t ComputeBitsetForDynamicContext(Variable* variable);
 
   // ===========================================================================
   // The following build methods all generate graph fragments and return one
   // resulting node. The operand stack height remains the same, variables and
   // other dependencies tracked by the environment might be mutated though.
@@ skipping 18 matching lines @@
   // Builders for variable load and assignment.
   Node* BuildVariableAssignment(Variable* variable, Node* value,
                                 Token::Value op, BailoutId bailout_id,
                                 FrameStateBeforeAndAfter& states,
                                 OutputFrameStateCombine framestate_combine =
                                     OutputFrameStateCombine::Ignore());
   Node* BuildVariableDelete(Variable* variable, BailoutId bailout_id,
                             OutputFrameStateCombine framestate_combine);
   Node* BuildVariableLoad(Variable* variable, BailoutId bailout_id,
                           FrameStateBeforeAndAfter& states,
-                          const VectorSlotPair& feedback,
+                          const ResolvedFeedbackSlot& feedback,
                           OutputFrameStateCombine framestate_combine,
                           ContextualMode mode = CONTEXTUAL);
 
   // Builders for property loads and stores.
   Node* BuildKeyedLoad(Node* receiver, Node* key,
-                       const VectorSlotPair& feedback);
+                       const ResolvedFeedbackSlot& feedback);
   Node* BuildNamedLoad(Node* receiver, Handle<Name> name,
-                       const VectorSlotPair& feedback,
+                       const ResolvedFeedbackSlot& feedback,
                        ContextualMode mode = NOT_CONTEXTUAL);
   Node* BuildKeyedStore(Node* receiver, Node* key, Node* value,
                         TypeFeedbackId id);
   Node* BuildNamedStore(Node* receiver, Handle<Name>, Node* value,
                         TypeFeedbackId id);
 
   // Builders for super property loads and stores.
   Node* BuildKeyedSuperStore(Node* receiver, Node* home_object, Node* key,
                              Node* value, TypeFeedbackId id);
   Node* BuildNamedSuperStore(Node* receiver, Node* home_object,
                              Handle<Name> name, Node* value, TypeFeedbackId id);
   Node* BuildNamedSuperLoad(Node* receiver, Node* home_object,
-                            Handle<Name> name, const VectorSlotPair& feedback);
+                            Handle<Name> name,
+                            const ResolvedFeedbackSlot& feedback);
   Node* BuildKeyedSuperLoad(Node* receiver, Node* home_object, Node* key,
-                            const VectorSlotPair& feedback);
+                            const ResolvedFeedbackSlot& feedback);
 
   // Builders for accessing the function context.
   Node* BuildLoadBuiltinsObject();
   Node* BuildLoadGlobalObject();
   Node* BuildLoadGlobalProxy();
   Node* BuildLoadClosure();
   Node* BuildLoadObjectField(Node* object, int offset);
 
   // Builders for accessing external references.
   Node* BuildLoadExternal(ExternalReference ref, MachineType type);
@@ skipping 218 matching lines @@
 
   // Prepare environment to be used as loop header.
   void PrepareForLoop(BitVector* assigned, bool is_osr = false);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_