Remove Code::active_instructions_.

runtime/vm/raw_object.cc

Index: runtime/vm/raw_object.cc
diff --git a/runtime/vm/raw_object.cc b/runtime/vm/raw_object.cc
index d32b5abf8771f8d5bc1f9cb28092409c0f17534c..7388f82c6ebe285ea0967728908747cc3930f0c7 100644
--- a/runtime/vm/raw_object.cc
+++ b/runtime/vm/raw_object.cc
@@ -542,6 +542,7 @@ intptr_t RawCode::VisitCodePointers(RawCode* raw_obj,
 
   RawCode* obj = raw_obj->ptr();
   intptr_t length = Code::PtrOffBits::decode(obj->state_bits_);
+#if defined(TARGET_ARCH_IA32)

[Florian Schneider, 2016/03/19 09:51:47]

Maybe add a comment why this is only needed on ia32.

[rmacnak, 2016/03/21 17:48:48]

Done.

   if (Code::AliveBit::decode(obj->state_bits_)) {
     // Also visit all the embedded pointers in the corresponding instructions.
     uword entry_point = reinterpret_cast<uword>(obj->instructions_->ptr()) +
@@ -553,6 +554,10 @@ intptr_t RawCode::VisitCodePointers(RawCode* raw_obj,
     }
   }
   return Code::InstanceSize(length);
+#else
+  ASSERT(length == 0);
+  return Code::InstanceSize(0);
+#endif
 }