Ensure deopt entries have no relocation information.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 671 matching lines @@
   code_age_sequence_ = NULL;
   if (mode_mask_ == 0) pos_ = end_;
   next();
 }
 
 
 // -----------------------------------------------------------------------------
 // Implementation of RelocInfo
 
 
+#ifdef DEBUG
+bool RelocInfo::RequiresRelocation(const CodeDesc& desc) {
+  // Ensure there are no code targets or embedded objects present in the
+  // deoptimization entries, they would require relocation after code
+  // generation.
+  int mode_mask = RelocInfo::kCodeTargetMask |
+                  RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) |
+                  RelocInfo::ModeMask(RelocInfo::GLOBAL_PROPERTY_CELL) |
+                  RelocInfo::kApplyMask;
+  RelocIterator it(desc, mode_mask);
+  return !it.done();
+}
+#endif
+
+
 #ifdef ENABLE_DISASSEMBLER
 const char* RelocInfo::RelocModeName(RelocInfo::Mode rmode) {
   switch (rmode) {
     case RelocInfo::NONE32:
       return "no reloc 32";
     case RelocInfo::NONE64:
       return "no reloc 64";
     case RelocInfo::EMBEDDED_OBJECT:
       return "embedded object";
     case RelocInfo::CONSTRUCT_CALL:
@@ skipping 865 matching lines @@
     assembler_->RecordRelocInfo(RelocInfo::POSITION, state_.current_position);
     state_.written_position = state_.current_position;
     written = true;
   }
 
   // Return whether something was written.
   return written;
 }
 
 } }  // namespace v8::internal