[Intepreter] Extend and move Register class.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 8a45c73bbbcbb4a7bd44ca05142c8ad63da08b4d..6684d50dc6c3cdce426c4be4617242b67ccc1cbc 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -8,7 +8,6 @@
 #include <vector>
 
 #include "src/ast.h"
-#include "src/frames.h"
 #include "src/identity-map.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/zone.h"
@@ -58,9 +57,6 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& Return();
 
  private:
-  static const int kLastParamRegisterIndex =
-      -InterpreterFrameConstants::kLastParamFromRegisterPointer / kPointerSize;
-
   static Bytecode BytecodeForBinaryOperation(Token::Value op);
 
   void Output(Bytecode bytecode, uint8_t r0, uint8_t r1, uint8_t r2);
@@ -92,32 +88,6 @@ class BytecodeArrayBuilder {
   DISALLOW_IMPLICIT_CONSTRUCTORS(BytecodeArrayBuilder);
 };
 
-// An interpreter register which is located in the function's register file
-// in its stack-frame.
-class Register {
- public:
-  static const int kMaxRegisterIndex = 128;
-  static const int kMinRegisterIndex = -127;
-
-  explicit Register(int index) : index_(index) {
-    DCHECK_LE(index_, kMaxRegisterIndex);
-    DCHECK_GE(index_, kMinRegisterIndex);
-  }
-
-  int index() { return index_; }
-
-  uint8_t ToOperand() { return static_cast<uint8_t>(-index_); }
-  static Register FromOperand(uint8_t operand) {
-    return Register(-static_cast<int8_t>(operand));
-  }
-
- private:
-  void* operator new(size_t size);
-  void operator delete(void* p);
-
-  int index_;
-};
-
 // A stack-allocated class than allows the instantiator to allocate
 // temporary registers that are cleaned up when scope is closed.
 class TemporaryRegisterScope {