More ifdefs to make everything build at -O0 and without --gc-sections.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/become.h"
@@ skipping 9776 matching lines @@
     entryname = entry.name();
     if (entryname.Equals(metaname)) {
       return entry.raw();
     }
   }
   return Field::null();
 }
 
 
 RawObject* Library::GetMetadata(const Object& obj) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+  COMPILE_ASSERT(!FLAG_enable_mirrors);
+  return Object::empty_array().raw();
+#else
   if (!obj.IsClass() && !obj.IsField() && !obj.IsFunction() &&
       !obj.IsLibrary() && !obj.IsTypeParameter()) {
     return Object::null();
   }
   const String& metaname = String::Handle(MakeMetadataName(obj));
   Field& field = Field::Handle(GetMetadataField(metaname));
   if (field.IsNull()) {
     // There is no metadata for this object.
     return Object::empty_array().raw();
   }
   Object& metadata = Object::Handle();
   metadata = field.StaticValue();
   if (field.StaticValue() == Object::empty_array().raw()) {
     kernel::TreeNode* kernel_node =
         reinterpret_cast<kernel::TreeNode*>(field.kernel_field());
 
     if (kernel_node != NULL) {
       metadata = kernel::EvaluateMetadata(kernel_node);
     } else {
       metadata = Parser::ParseMetadata(field);
     }
     if (metadata.IsArray()) {
       ASSERT(Array::Cast(metadata).raw() != Object::empty_array().raw());
       field.SetStaticValue(Array::Cast(metadata), true);
     }
   }
   return metadata.raw();
+#endif  // defined(DART_PRECOMPILED_RUNTIME)
 }
 
 
 static bool ShouldBePrivate(const String& name) {
   return (name.Length() >= 1 && name.CharAt(0) == '_') ||
          (name.Length() >= 5 &&
           (name.CharAt(4) == '_' &&
            (name.CharAt(0) == 'g' || name.CharAt(0) == 's') &&
            name.CharAt(1) == 'e' && name.CharAt(2) == 't' &&
            name.CharAt(3) == ':'));
@@ skipping 13178 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart