Thumb2 Backend: Thumb2 changes for Deoptimization and Code Aging

src/serialize.h

Index: src/serialize.h
diff --git a/src/serialize.h b/src/serialize.h
index 563f0a06d025fb247d987beb357a0bea6212f447..4c598b15439b253a6f67b6c6bec98c1915f93b8d 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -563,6 +563,10 @@ class Serializer : public SerializerDeserializer {
   static int SpaceOfObject(HeapObject* object);
   int Allocate(int space, int size);
   int EncodeExternalReference(Address addr) {
+    if (((uint32_t)addr & 3) != 0) {
+      addr = (Address)((((uint32_t)addr << 16) & ~0xffff) |
+             (((uint32_t)addr >> 16) & 0xffff));
+    }
     return external_reference_encoder_->Encode(addr);
   }