MIPS: Fix unaligned read of bytecodes in interpreter.

src/interpreter/bytecode-array-iterator.cc

 // 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.
 
 #include "src/interpreter/bytecode-array-iterator.h"
 
 #include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 30 matching lines @@
   uint8_t* operand_start =
       bytecode_array()->GetFirstBytecodeAddress() + bytecode_offset_ +
       Bytecodes::GetOperandOffset(current_bytecode(), operand_index);
   switch (Bytecodes::SizeOfOperand(operand_type)) {
     default:
     case OperandSize::kNone:
       UNREACHABLE();
     case OperandSize::kByte:
       return static_cast<uint32_t>(*operand_start);
     case OperandSize::kShort:
-      return Bytecodes::ShortOperandFromBytes(operand_start);
+      return ReadUnalignedUInt16(operand_start);
   }
 }
 
 
 int8_t BytecodeArrayIterator::GetImmediateOperand(int operand_index) const {
   uint32_t operand = GetRawOperand(operand_index, OperandType::kImm8);
   return static_cast<int8_t>(operand);
 }
 
 
@@ skipping 21 matching lines @@
 
 Handle<Object> BytecodeArrayIterator::GetConstantForIndexOperand(
     int operand_index) const {
   Handle<FixedArray> constants = handle(bytecode_array()->constant_pool());
   return FixedArray::get(constants, GetIndexOperand(operand_index));
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8