[Turbofan] Introduce OtherNumberConstant.

src/compiler/operation-typer.cc

Index: src/compiler/operation-typer.cc
diff --git a/src/compiler/operation-typer.cc b/src/compiler/operation-typer.cc
index ca693d1ae8b0826370a9be64d9fd6f897e2fac06..0cdb6d1031f0cefad000682a7479dd69b40bfbc1 100644
--- a/src/compiler/operation-typer.cc
+++ b/src/compiler/operation-typer.cc
@@ -19,14 +19,14 @@ namespace compiler {
 OperationTyper::OperationTyper(Isolate* isolate, Zone* zone)
     : zone_(zone), cache_(TypeCache::Get()) {
   Factory* factory = isolate->factory();
-  infinity_ = Type::Constant(factory->infinity_value(), zone);
-  minus_infinity_ = Type::Constant(factory->minus_infinity_value(), zone);
+  infinity_ = Type::NewConstant(factory->infinity_value(), zone);
+  minus_infinity_ = Type::NewConstant(factory->minus_infinity_value(), zone);
   Type* truncating_to_zero = Type::MinusZeroOrNaN();
   DCHECK(!truncating_to_zero->Maybe(Type::Integral32()));
 
-  singleton_false_ = Type::Constant(factory->false_value(), zone);
-  singleton_true_ = Type::Constant(factory->true_value(), zone);
-  singleton_the_hole_ = Type::Constant(factory->the_hole_value(), zone);
+  singleton_false_ = Type::HeapConstant(factory->false_value(), zone);
+  singleton_true_ = Type::HeapConstant(factory->true_value(), zone);
+  singleton_the_hole_ = Type::HeapConstant(factory->the_hole_value(), zone);
   signed32ish_ = Type::Union(Type::Signed32(), truncating_to_zero, zone);
   unsigned32ish_ = Type::Union(Type::Unsigned32(), truncating_to_zero, zone);
 }