Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*)

src/codegen.cc

 // Copyright 2012 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/codegen.h"
 
 #if defined(V8_OS_AIX)
 #include <fenv.h>  // NOLINT(build/c++11)
 #endif
 #include "src/ast/prettyprinter.h"
@@ skipping 129 matching lines @@
       code->instruction_size());
   isolate->heap()->IncrementCodeGeneratedBytes(is_crankshafted,
       code->instruction_size());
   return code;
 }
 
 
 void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) {
 #ifdef ENABLE_DISASSEMBLER
   AllowDeferredHandleDereference allow_deference_for_print_code;
-  bool print_code = info->isolate()->bootstrapper()->IsActive()
-      ? FLAG_print_builtin_code
-      : (FLAG_print_code ||
-         (info->IsStub() && FLAG_print_code_stubs) ||
-         (info->IsOptimizing() && FLAG_print_opt_code));
+  Isolate* isolate = info->isolate();
+  bool print_code =
+      isolate->bootstrapper()->IsActive()
+          ? FLAG_print_builtin_code
+          : (FLAG_print_code || (info->IsStub() && FLAG_print_code_stubs) ||
+             (info->IsOptimizing() && FLAG_print_opt_code));
   if (print_code) {
     base::SmartArrayPointer<char> debug_name = info->GetDebugName();
     CodeTracer::Scope tracing_scope(info->isolate()->GetCodeTracer());
     OFStream os(tracing_scope.file());
 
     // Print the source code if available.
     bool print_source =
         info->parse_info() && (code->kind() == Code::OPTIMIZED_FUNCTION ||
                                code->kind() == Code::FUNCTION);
     if (print_source) {
       Handle<SharedFunctionInfo> shared = info->shared_info();
       Handle<Script> script = info->script();
-      if (!script->IsUndefined() && !script->source()->IsUndefined()) {
+      if (!script->IsUndefined(isolate) &&
+          !script->source()->IsUndefined(isolate)) {
         os << "--- Raw source ---\n";
         StringCharacterStream stream(String::cast(script->source()),
                                      shared->start_position());
         // fun->end_position() points to the last character in the stream. We
         // need to compensate by adding one to calculate the length.
         int source_len = shared->end_position() - shared->start_position() + 1;
         for (int i = 0; i < source_len; i++) {
           if (stream.HasMore()) {
             os << AsReversiblyEscapedUC16(stream.GetNext());
           }
@@ skipping 16 matching lines @@
       os << "source_position = " << shared->start_position() << "\n";
     }
     code->Disassemble(debug_name.get(), os);
     os << "--- End code ---\n";
   }
 #endif  // ENABLE_DISASSEMBLER
 }
 
 }  // namespace internal
 }  // namespace v8