[v8-dev] ARM: safepoints frame optimization

src/lithium-allocator-inl.h

 // Copyright 2011 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 132 matching lines @@
 void UseIterator::Advance() {
   input_iterator_.Done()
       ? env_iterator_.Advance()
       : input_iterator_.Advance();
 }
 
 
 void LAllocator::SetLiveRangeAssignedRegister(LiveRange* range, int reg) {
   if (range->Kind() == DOUBLE_REGISTERS) {
     assigned_double_registers_->Add(reg);
+    if (!range->IsFixed()) {
+      modified_double_registers_ |=
+          1 << DoubleRegister::FromAllocationIndex(reg).code();
+    }
   } else {
     ASSERT(range->Kind() == GENERAL_REGISTERS);
     assigned_registers_->Add(reg);
+    if (!range->IsFixed()) {
+      modified_registers_ |= 1 << Register::FromAllocationIndex(reg).code();
+    }
   }
   range->set_assigned_register(reg, chunk()->zone());
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_ALLOCATOR_INL_H_