[interpreter] Merge {OsrPoll} with {Jump} bytecode.

src/interpreter/control-flow-builders.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_INTERPRETER_CONTROL_FLOW_BUILDERS_H_
 #define V8_INTERPRETER_CONTROL_FLOW_BUILDERS_H_
 
 #include "src/interpreter/bytecode-array-builder.h"
 
 #include "src/interpreter/bytecode-label.h"
@@ skipping 68 matching lines @@
 // their loop.
 class LoopBuilder final : public BreakableControlFlowBuilder {
  public:
   explicit LoopBuilder(BytecodeArrayBuilder* builder)
       : BreakableControlFlowBuilder(builder),
         continue_labels_(builder->zone()),
         header_labels_(builder->zone()) {}
   ~LoopBuilder();
 
   void LoopHeader(ZoneVector<BytecodeLabel>* additional_labels);
-  void JumpToHeader();
-  void JumpToHeaderIfTrue();
+  void JumpToHeader(int loop_depth);
   void BindContinueTarget();
   void EndLoop();
 
   // This method is called when visiting continue statements in the AST.
   // Inserts a jump to an unbound label that is patched when BindContinueTarget
   // is called.
   void Continue() { EmitJump(&continue_labels_); }
   void ContinueIfTrue() { EmitJumpIfTrue(&continue_labels_); }
   void ContinueIfUndefined() { EmitJumpIfUndefined(&continue_labels_); }
   void ContinueIfNull() { EmitJumpIfNull(&continue_labels_); }
 
-  BytecodeLabels* header_labels() { return &header_labels_; }
-  BytecodeLabels* continue_labels() { return &continue_labels_; }
-
  private:
   BytecodeLabel loop_header_;
 
   // Unbound labels that identify jumps for continue statements in the code and
   // jumps from checking the loop condition to the header for do-while loops.
   BytecodeLabels continue_labels_;
   BytecodeLabels header_labels_;
 };
 
 
@@ skipping 72 matching lines @@
 
   // Unbound labels that identify jumps to the finally block in the code.
   BytecodeLabels finalization_sites_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_CONTROL_FLOW_BUILDERS_H_