[turbofan] Collect invocation counts and compute relative call frequencies.

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/ast.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
@@ skipping 19 matching lines @@
 
 // The AstGraphBuilder produces a high-level IR graph, based on an
 // underlying AST. The produced graph can either be compiled into a
 // stand-alone function or be wired into another graph for the purposes
 // of function inlining.
 // This AstVistor is not final, and provides the AstVisitor methods as virtual
 // methods so they can be specialized by subclasses.
 class AstGraphBuilder : public AstVisitor<AstGraphBuilder> {
  public:
   AstGraphBuilder(Zone* local_zone, CompilationInfo* info, JSGraph* jsgraph,
+                  float invocation_frequency,
                   LoopAssignmentAnalysis* loop_assignment = nullptr,
                   TypeHintAnalysis* type_hint_analysis = nullptr);
   virtual ~AstGraphBuilder() {}
 
   // Creates a graph by visiting the entire AST.
   bool CreateGraph(bool stack_check = true);
 
   // Helpers to create new control nodes.
   Node* NewIfTrue() { return NewNode(common()->IfTrue()); }
   Node* NewIfFalse() { return NewNode(common()->IfFalse()); }
@@ skipping 23 matching lines @@
   class ControlScopeForIteration;
   class ControlScopeForCatch;
   class ControlScopeForFinally;
   class Environment;
   friend class ControlBuilder;
 
   Isolate* isolate_;
   Zone* local_zone_;
   CompilationInfo* info_;
   JSGraph* jsgraph_;
+  float const invocation_frequency_;
   Environment* environment_;
   AstContext* ast_context_;
 
   // List of global declarations for functions and variables.
   ZoneVector<Handle<Object>> globals_;
 
   // Stack of control scopes currently entered by the visitor.
   ControlScope* execution_control_;
 
   // Stack of context objects pushed onto the chain by the visitor.
@@ skipping 514 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_