Thumb2 Backend: Thumb2 changes for Deoptimization and Code Aging

src/serialize.h

 // Copyright 2012 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 545 matching lines @@
       int space,
       int address,
       HowToCode how_to_code,
       WhereToPoint where_to_point,
       int skip);
   void InitializeAllocators();
   // This will return the space for an object.
   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);
   }
 
   int SpaceAreaSize(int space);
 
   Isolate* isolate_;
   // Keep track of the fullness of each space in order to generate
   // relative addresses for back references.
   int fullness_[LAST_SPACE + 1];
   SnapshotByteSink* sink_;
@@ skipping 79 matching lines @@
  private:
   virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) {
     return false;
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_