Port r9643 to 3.1 branch.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index e0a437ac6de8419a777a631772a828796080f763..b5c20849ec07f14c5feb8e73e42162dde080ba41 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -80,6 +80,12 @@ class CompilationInfo BASE_EMBEDDED {
     ASSERT(is_lazy());
     flags_ |= IsInLoop::encode(true);
   }
+  void MarkAsNative() {
+    flags_ |= IsNative::encode(true);
+  }
+  bool is_native() const {
+    return IsNative::decode(flags_);
+  }
   void SetFunction(FunctionLiteral* literal) {
     ASSERT(function_ == NULL);
     function_ = literal;
@@ -152,6 +158,9 @@ class CompilationInfo BASE_EMBEDDED {
 
   void Initialize(Mode mode) {
     mode_ = V8::UseCrankshaft() ? mode : NONOPT;
+    if (script_->type()->value() == Script::TYPE_NATIVE) {
+      MarkAsNative();
+    }
     if (!shared_info_.is_null() && shared_info_->strict_mode()) {
       MarkAsStrict();
     }
@@ -174,6 +183,8 @@ class CompilationInfo BASE_EMBEDDED {
   class IsInLoop: public BitField<bool, 3, 1> {};
   // Strict mode - used in eager compilation.
   class IsStrict: public BitField<bool, 4, 1> {};
+  // Is this a function from our natives.
+  class IsNative: public BitField<bool, 6, 1> {};
 
   unsigned flags_;