[turbofan] Add NewUnmappedArgumentsElements and NewRestParametersArguments.

src/compiler/type-cache.h

 // 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.
 
 #ifndef V8_COMPILER_TYPE_CACHE_H_
 #define V8_COMPILER_TYPE_CACHE_H_
 
 #include "src/compiler/types.h"
 #include "src/date.h"
 
@@ skipping 123 matching lines @@
   // The JSDate::weekday property always contains a tagged number in the range
   // [0, 6] or NaN.
   Type* const kJSDateWeekdayType =
       Type::Union(CreateRange(0, 6.0), Type::NaN(), zone());
 
   // The JSDate::year property always contains a tagged number in the signed
   // small range or NaN.
   Type* const kJSDateYearType =
       Type::Union(Type::SignedSmall(), Type::NaN(), zone());
 
+  // The valid number of arguments for JavaScript functions.
+  Type* const kArgumentsLengthType =
+      Type::Range(0.0, Code::kMaxArguments, zone());
+
  private:
   template <typename T>
   Type* CreateRange() {
     return CreateRange(std::numeric_limits<T>::min(),
                        std::numeric_limits<T>::max());
   }
 
   Type* CreateRange(double min, double max) {
     return Type::Range(min, max, zone());
   }
 
   Zone* zone() { return &zone_; }
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_TYPE_CACHE_H_