Use type info for the ToBoolean translation in crankshaft.

src/code-stubs.cc

 // 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 318 matching lines @@
   stream->Add("CallFunctionStub_Args%d%s%s", argc_, in_loop_name, flags_name);
 }
 
 
 void ToBooleanStub::PrintName(StringStream* stream) {
   stream->Add("ToBooleanStub_");
   types_.Print(stream);
 }
 
 
-void ToBooleanStub::Types::Print(StringStream* stream) {
+void ToBooleanStub::Types::Print(StringStream* stream) const {
   if (IsEmpty()) stream->Add("None");
   if (Contains(UNDEFINED)) stream->Add("Undefined");
   if (Contains(BOOLEAN)) stream->Add("Bool");
   if (Contains(SMI)) stream->Add("Smi");
   if (Contains(NULL_TYPE)) stream->Add("Null");
   if (Contains(SPEC_OBJECT)) stream->Add("SpecObject");
   if (Contains(STRING)) stream->Add("String");
   if (Contains(HEAP_NUMBER)) stream->Add("HeapNumber");
   if (Contains(INTERNAL_OBJECT)) stream->Add("InternalObject");
 }
 
 
-void ToBooleanStub::Types::TraceTransition(Types to) {
+void ToBooleanStub::Types::TraceTransition(Types to) const {
   if (!FLAG_trace_ic) return;
   char buffer[100];
   NoAllocationStringAllocator allocator(buffer,
                                         static_cast<unsigned>(sizeof(buffer)));
   StringStream stream(&allocator);
   stream.Add("[ToBooleanIC (");
   Print(&stream);
   stream.Add("->");
   to.Print(&stream);
   stream.Add(")]\n");
@@ skipping 25 matching lines @@
     Add(HEAP_NUMBER);
     double value = HeapNumber::cast(*object)->value();
     return !object->IsUndetectableObject() && value != 0 && !isnan(value);
   } else {
     Add(INTERNAL_OBJECT);
     return !object->IsUndetectableObject();
   }
 }
 
 
+bool ToBooleanStub::Types::NeedsMap() const {
+  return Contains(ToBooleanStub::SPEC_OBJECT)
+      || Contains(ToBooleanStub::STRING)
+      || Contains(ToBooleanStub::HEAP_NUMBER)
+      || Contains(ToBooleanStub::INTERNAL_OBJECT);
+}
+
+
 } }  // namespace v8::internal