[v8-dev] ARM: safepoints frame optimization

src/heap.cc

 // 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 4072 matching lines @@
   code->set_deoptimization_data(empty_fixed_array(), SKIP_WRITE_BARRIER);
   code->set_raw_type_feedback_info(undefined_value());
   code->set_handler_table(empty_fixed_array(), SKIP_WRITE_BARRIER);
   code->set_gc_metadata(Smi::FromInt(0));
   code->set_ic_age(global_ic_age_);
   code->set_prologue_offset(prologue_offset);
   if (code->kind() == Code::OPTIMIZED_FUNCTION) {
     code->set_marked_for_deoptimization(false);
   }
   code->set_constant_pool(empty_constant_pool_array());
+#if V8_TARGET_ARCH_ARM
+  code->set_registers_mask(desc.registers_mask);
+  code->set_double_registers_mask(desc.double_registers_mask);
+#endif
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
   if (code->kind() == Code::FUNCTION) {
     code->set_has_debug_break_slots(
         isolate_->debugger()->IsDebuggerActive());
   }
 #endif
 
   // Allow self references to created code object by patching the handle to
   // point to the newly allocated Code object.
@@ skipping 3609 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   OS::MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   OS::MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal