[Interpreter] Remove register file register and replace with LoadParentFramePointer.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-register-allocator.h"
 #include "test/unittests/test-utils.h"
@@ skipping 346 matching lines @@
         int total_registers = locals + contexts + temps;
         CHECK_EQ(the_array->frame_size(), total_registers * kPointerSize);
       }
     }
   }
 }
 
 
 TEST_F(BytecodeArrayBuilderTest, RegisterValues) {
   int index = 1;
-  int32_t operand = -index;
 
   Register the_register(index);
   CHECK_EQ(the_register.index(), index);
 
   int actual_operand = the_register.ToOperand();
-  CHECK_EQ(actual_operand, operand);
-
   int actual_index = Register::FromOperand(actual_operand).index();
   CHECK_EQ(actual_index, index);
 }
 
 
 TEST_F(BytecodeArrayBuilderTest, Parameters) {
   BytecodeArrayBuilder builder(isolate(), zone(), 10, 0, 0);
   Register param0(builder.Parameter(0));
   Register param9(builder.Parameter(9));
   CHECK_EQ(param9.index() - param0.index(), 9);
@@ skipping 396 matching lines @@
             static_cast<size_t>(kMaxUInt16)) == OperandSize::kShort);
   CHECK(BytecodeArrayBuilder::SizeForUnsignedOperand(
             static_cast<size_t>(kMaxUInt16 + 1)) == OperandSize::kQuad);
   CHECK(BytecodeArrayBuilder::SizeForUnsignedOperand(
             static_cast<size_t>(kMaxUInt32)) == OperandSize::kQuad);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8