[Interpreter] Add support for short (16 bit) operands.

src/compiler/bytecode-graph-builder.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/compiler/bytecode-graph-builder.h"
 
 #include "src/compiler/linkage.h"
 #include "src/compiler/operator-properties.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 
@@ skipping 170 matching lines @@
 
 void BytecodeGraphBuilder::VisitLdaZero(
     const interpreter::BytecodeArrayIterator& iterator) {
   Node* node = jsgraph()->ZeroConstant();
   environment()->BindAccumulator(node);
 }
 
 
 void BytecodeGraphBuilder::VisitLdaSmi8(
     const interpreter::BytecodeArrayIterator& iterator) {
-  Node* node = jsgraph()->Constant(iterator.GetSmi8Operand(0));
+  Node* node = jsgraph()->Constant(iterator.GetImmediateOperand(0));
   environment()->BindAccumulator(node);
 }
 
 
 void BytecodeGraphBuilder::VisitLdaConstant(
     const interpreter::BytecodeArrayIterator& iterator) {
   Node* node = jsgraph()->Constant(iterator.GetConstantForIndexOperand(0));
   environment()->BindAccumulator(node);
 }
 
@@ skipping 336 matching lines @@
 
 void BytecodeGraphBuilder::UpdateControlDependencyToLeaveFunction(Node* exit) {
   if (environment()->IsMarkedAsUnreachable()) return;
   environment()->MarkAsUnreachable();
   exit_controls_.push_back(exit);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8