Store type information with constants. ...

src/register-allocator-inl.h

 // Copyright 2009 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 88 matching lines @@
 }
 
 
 void RegisterAllocator::Unuse(Register reg) {
   registers_.Unuse(ToNumber(reg));
 }
 
 
 NumberInfo Result::number_info() const {
   ASSERT(is_valid());
-  if (!is_constant()) {
-    return NumberInfo::FromInt(NumberInfoField::decode(value_));
-  }
-  Handle<Object> value = handle();
-  if (value->IsSmi()) return NumberInfo::Smi();
-  if (value->IsHeapNumber()) return NumberInfo::HeapNumber();
-  return NumberInfo::Unknown();
+  return NumberInfo::FromInt(NumberInfoField::decode(value_));
 }
 
 
 void Result::set_number_info(NumberInfo info) {
   ASSERT(is_valid());
   value_ &= ~NumberInfoField::mask();
   value_ |= NumberInfoField::encode(info.ToInt());
 }
 
 
 bool Result::is_number() const {
   return number_info().IsNumber();
 }
 
 
 bool Result::is_smi() const {
   return number_info().IsSmi();
 }
 
 
 bool Result::is_integer32() const {
   return number_info().IsInteger32();
 }
 
 
-bool Result::is_heap_number() const {
-  return number_info().IsHeapNumber();
+bool Result::is_double() const {
+  return number_info().IsDouble();
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_REGISTER_ALLOCATOR_INL_H_