[interpreter] Add accumulator use description to bytecodes.

src/interpreter/interpreter-assembler.h

Index: src/interpreter/interpreter-assembler.h
diff --git a/src/interpreter/interpreter-assembler.h b/src/interpreter/interpreter-assembler.h
index bca3e034b3c4b4a02ca79685b0193efed054665b..86ecea54dd08517a1cd87890d6dd7f0f010bd46f 100644
--- a/src/interpreter/interpreter-assembler.h
+++ b/src/interpreter/interpreter-assembler.h
@@ -150,6 +150,7 @@ class InterpreterAssembler : public compiler::CodeStubAssembler {
   void Abort(BailoutReason bailout_reason);
 
  protected:
+  Bytecode bytecode() const { return bytecode_; }
   static bool TargetSupportsUnalignedAccess();
 
  private:
@@ -162,6 +163,11 @@ class InterpreterAssembler : public compiler::CodeStubAssembler {
   // Returns a raw pointer to first entry in the interpreter dispatch table.
   compiler::Node* DispatchTableRawPointer();
 
+  // Returns the accumulator value without checking whether bytecode
+  // uses it. This is intended to be used only in dispatch and in
+  // tracing as these need to bypass accumulator use validity checks.
+  compiler::Node* GetAccumulatorUnchecked();
+
   // Saves and restores interpreter bytecode offset to the interpreter stack
   // frame when performing a call.
   void CallPrologue() override;
@@ -217,6 +223,7 @@ class InterpreterAssembler : public compiler::CodeStubAssembler {
   Bytecode bytecode_;
   OperandScale operand_scale_;
   CodeStubAssembler::Variable accumulator_;
+  AccumulatorUse accumulator_use_;
   CodeStubAssembler::Variable context_;
   CodeStubAssembler::Variable bytecode_array_;