[turbofan] Introduce Float64Pow and NumberPow operators.

src/js/v8natives.js

 // Copyright 2012 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.
 
 (function(global, utils) {
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
@@ skipping 379 matching lines @@
   "MIN_VALUE", 5e-324,
   // ECMA-262 section 15.7.3.3.
   "NaN", NaN,
   // ECMA-262 section 15.7.3.4.
   "NEGATIVE_INFINITY", -INFINITY,
   // ECMA-262 section 15.7.3.5.
   "POSITIVE_INFINITY", INFINITY,
 
   // --- Harmony constants (no spec refs until settled.)
 
-  "MAX_SAFE_INTEGER", %_MathPow(2, 53) - 1,
-  "MIN_SAFE_INTEGER", -%_MathPow(2, 53) + 1,
-  "EPSILON", %_MathPow(2, -52)
+  "MAX_SAFE_INTEGER", 9007199254740991,
+  "MIN_SAFE_INTEGER", -9007199254740991,
+  "EPSILON", 2.220446049250313e-16,
 ]);
 
 // Set up non-enumerable functions on the Number prototype object.
 utils.InstallFunctions(GlobalNumber.prototype, DONT_ENUM, [
   "toString", NumberToStringJS,
   "toLocaleString", NumberToLocaleString,
   "valueOf", NumberValueOf,
   "toFixed", NumberToFixedJS,
   "toExponential", NumberToExponentialJS,
   "toPrecision", NumberToPrecisionJS
@@ skipping 40 matching lines @@
   to.NumberIsNaN = NumberIsNaN;
   to.NumberIsInteger = NumberIsInteger;
   to.ObjectHasOwnProperty = GlobalObject.prototype.hasOwnProperty;
 });
 
 %InstallToContext([
   "object_value_of", ObjectValueOf,
 ]);
 
 })