[turbofan] Add Int64(Add|Sub)WithOverflow support.

src/compiler/typer.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/typer.h"
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/common-operator.h"
@@ skipping 2063 matching lines @@
 
 
 Type* Typer::Visitor::TypeUint32MulHigh(Node* node) {
   return Type::Unsigned32();
 }
 
 
 Type* Typer::Visitor::TypeInt64Add(Node* node) { return Type::Internal(); }
 
 
+Type* Typer::Visitor::TypeInt64AddWithOverflow(Node* node) {
+  return Type::Internal();
+}
+
+
 Type* Typer::Visitor::TypeInt64Sub(Node* node) { return Type::Internal(); }
 
 
+Type* Typer::Visitor::TypeInt64SubWithOverflow(Node* node) {
+  return Type::Internal();
+}
+
+
 Type* Typer::Visitor::TypeInt64Mul(Node* node) { return Type::Internal(); }
 
 
 Type* Typer::Visitor::TypeInt64Div(Node* node) { return Type::Internal(); }
 
 
 Type* Typer::Visitor::TypeInt64Mod(Node* node) { return Type::Internal(); }
 
 
 Type* Typer::Visitor::TypeInt64LessThan(Node* node) { return Type::Boolean(); }
@@ skipping 320 matching lines @@
   }
   if (Type::IsInteger(*value)) {
     return Type::Range(value->Number(), value->Number(), zone());
   }
   return Type::Constant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8