Use type info for the ToBoolean translation in crankshaft.

src/code-stubs.cc

Index: src/code-stubs.cc
===================================================================
--- src/code-stubs.cc	(revision 8757)
+++ src/code-stubs.cc	(working copy)
@@ -336,7 +336,7 @@
 }
 
 
-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");
@@ -349,7 +349,7 @@
 }
 
 
-void ToBooleanStub::Types::TraceTransition(Types to) {
+void ToBooleanStub::Types::TraceTransition(Types to) const {
   if (!FLAG_trace_ic) return;
   char buffer[100];
   NoAllocationStringAllocator allocator(buffer,
@@ -395,4 +395,12 @@
 }
 
 
+bool ToBooleanStub::Types::NeedsMap() const {
+  return Contains(ToBooleanStub::SPEC_OBJECT)
+      || Contains(ToBooleanStub::STRING)
+      || Contains(ToBooleanStub::HEAP_NUMBER)
+      || Contains(ToBooleanStub::INTERNAL_OBJECT);
+}
+
+
 } }  // namespace v8::internal