[Interpreter] Add explicit StackCheck bytecodes on function entry and back branches.

src/compiler/bytecode-graph-builder.h

 // Copyright 2015 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_BYTECODE_GRAPH_BUILDER_H_
 #define V8_COMPILER_BYTECODE_GRAPH_BUILDER_H_
 
 #include "src/compiler.h"
 #include "src/compiler/bytecode-branch-analysis.h"
 #include "src/compiler/js-graph.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecodes.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // The BytecodeGraphBuilder produces a high-level IR graph based on
 // interpreter bytecodes.
 class BytecodeGraphBuilder {
  public:
   BytecodeGraphBuilder(Zone* local_zone, CompilationInfo* info,
                        JSGraph* jsgraph);
 
   // Creates a graph by visiting bytecodes.
-  bool CreateGraph(bool stack_check = true);
+  bool CreateGraph();
 
  private:
   class Environment;
   class FrameStateBeforeAndAfter;
 
-  void CreateGraphBody(bool stack_check);
   void VisitBytecodes();
 
   // Get or create the node that represents the outer function closure.
   Node* GetFunctionClosure();
 
   // Get or create the node that represents the outer function context.
   Node* GetFunctionContext();
 
   // Get or create the node that represents the incoming new target value.
   Node* GetNewTarget();
@@ skipping 111 matching lines @@
   void MergeIntoSuccessorEnvironment(int target_offset);
   void BuildLoopHeaderEnvironment(int current_offset);
   void SwitchToMergeEnvironment(int current_offset);
 
   // Simulates control flow that exits the function body.
   void MergeControlToLeaveFunction(Node* exit);
 
   // Simulates entry and exit of exception handlers.
   void EnterAndExitExceptionHandlers(int current_offset);
 
-  // Attaches a frame state to |node| for the entry to the function.
-  void PrepareEntryFrameState(Node* node);
-
   // Growth increment for the temporary buffer used to construct input lists to
   // new nodes.
   static const int kInputBufferSizeIncrement = 64;
 
   // An abstract representation for an exception handler that is being
   // entered and exited while the graph builder is iterating over the
   // underlying bytecode. The exception handlers within the bytecode are
   // well scoped, hence will form a stack during iteration.
   struct ExceptionHandler {
     int start_offset_;    // Start offset of the handled area in the bytecode.
@@ skipping 80 matching lines @@
   ZoneVector<Node*> exit_controls_;
 
   DISALLOW_COPY_AND_ASSIGN(BytecodeGraphBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_BYTECODE_GRAPH_BUILDER_H_