[builtins] Add support for JS builtins written in TurboFan.

src/js/math.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) {
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
@@ skipping 73 matching lines @@
     nextRandomIndex = randomNumbers.length;
   }
   return %_DoubleLo(randomNumbers[--nextRandomIndex]) & 0x3FFFFFFF;
 }
 
 // ECMA 262 - 15.8.2.15
 function MathRound(x) {
   return %RoundNumber(TO_NUMBER(x));
 }
 
-// ECMA 262 - 15.8.2.17
-function MathSqrtJS(x) {
-  return %_MathSqrt(+x);
-}
-
 // ES6 draft 09-27-13, section 20.2.2.28.
 function MathSign(x) {
   x = +x;
   if (x > 0) return 1;
   if (x < 0) return -1;
   // -0, 0 or NaN.
   return x;
 }
 
 // ES6 draft 09-27-13, section 20.2.2.34.
 function MathTrunc(x) {
   x = +x;
   if (x > 0) return %_MathFloor(x);
   if (x < 0) return -%_MathFloor(-x);
   // -0, 0 or NaN.
   return x;
 }
 
 // ES6 draft 09-27-13, section 20.2.2.5.
 function MathAsinh(x) {
   x = TO_NUMBER(x);
   // Idempotent for NaN, +/-0 and +/-Infinity.
   if (x === 0 || !NUMBER_IS_FINITE(x)) return x;
-  if (x > 0) return MathLog(x + %_MathSqrt(x * x + 1));
+  if (x > 0) return MathLog(x + %math_sqrt(x * x + 1));
   // This is to prevent numerical errors caused by large negative x.
-  return -MathLog(-x + %_MathSqrt(x * x + 1));
+  return -MathLog(-x + %math_sqrt(x * x + 1));
 }
 
 // ES6 draft 09-27-13, section 20.2.2.3.
 function MathAcosh(x) {
   x = TO_NUMBER(x);
   if (x < 1) return NaN;
   // Idempotent for NaN and +Infinity.
   if (!NUMBER_IS_FINITE(x)) return x;
-  return MathLog(x + %_MathSqrt(x + 1) * %_MathSqrt(x - 1));
+  return MathLog(x + %math_sqrt(x + 1) * %math_sqrt(x - 1));
 }
 
 // ES6 draft 09-27-13, section 20.2.2.7.
 function MathAtanh(x) {
   x = TO_NUMBER(x);
   // Idempotent for +/-0.
   if (x === 0) return x;
   // Returns NaN for NaN and +/- Infinity.
   if (!NUMBER_IS_FINITE(x)) return NaN;
   return 0.5 * MathLog((1 + x) / (1 - x));
@@ skipping 18 matching lines @@
   if (max === 0) max = 1;
   var sum = 0;
   var compensation = 0;
   for (var i = 0; i < length; i++) {
     var n = arguments[i] / max;
     var summand = n * n - compensation;
     var preliminary = sum + summand;
     compensation = (preliminary - sum) - summand;
     sum = preliminary;
   }
-  return %_MathSqrt(sum) * max;
+  return %math_sqrt(sum) * max;
 }
 
 // ES6 draft 07-18-14, section 20.2.2.11
 function MathClz32JS(x) {
   return %_MathClz32(x >>> 0);
 }
 
 // ES6 draft 09-27-13, section 20.2.2.9.
 // Cube root approximation, refer to: http://metamerist.com/cbrt/cbrt.htm
 // Using initial approximation adapted from Kahan's cbrt and 4 iterations
@@ skipping 44 matching lines @@
 // Set up non-enumerable functions of the Math object and
 // set their names.
 utils.InstallFunctions(GlobalMath, DONT_ENUM, [
   "random", MathRandom,
   "abs", MathAbs,
   "ceil", MathCeil,
   "exp", MathExp,
   "floor", MathFloorJS,
   "log", MathLog,
   "round", MathRound,
-  "sqrt", MathSqrtJS,
   "atan2", MathAtan2JS,
   "pow", MathPowJS,
   "sign", MathSign,
   "trunc", MathTrunc,
   "asinh", MathAsinh,
   "acosh", MathAcosh,
   "atanh", MathAtanh,
   "hypot", MathHypot,
   "clz32", MathClz32JS,
   "cbrt", MathCbrt
 ]);
 
 %SetForceInlineFlag(MathAbs);
 %SetForceInlineFlag(MathAtan2JS);
 %SetForceInlineFlag(MathCeil);
 %SetForceInlineFlag(MathClz32JS);
 %SetForceInlineFlag(MathFloorJS);
 %SetForceInlineFlag(MathRandom);
 %SetForceInlineFlag(MathSign);
-%SetForceInlineFlag(MathSqrtJS);
 %SetForceInlineFlag(MathTrunc);
 
 // -------------------------------------------------------------------
 // Exports
 
 utils.Export(function(to) {
   to.MathAbs = MathAbs;
   to.MathExp = MathExp;
   to.MathFloor = MathFloorJS;
   to.IntRandom = MathRandomRaw;
 });
 
 })