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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --allow-natives-syntax --array-bounds-checks-elimination
      6 
      7 var a = []
      8 for (var i = 0; i < 9; i++) a[i] = i + 1;
      9 
     10 function test(f, arg1, arg2, expected) {
     11   assertEquals(expected, f(arg1));
     12   f(arg2);
     13   %OptimizeFunctionOnNextCall(f);
     14   assertEquals(expected, f(arg1));
     15 }
     16 
     17 test(function f0() {
     18   return a[7] * a[6] * a[5] * a[4] * a[3] * a[2] * a[1] * a[0];
     19 }, 0, 1, 40320);
     20 
     21 test(function f1() {
     22   return a[7] * a[6] * a[5] * a[4] * a[10] * a[2] * a[1] * a[0];
     23 }, 0, 1, NaN);
     24 
     25 test(function f2() {
     26   return a[0] * a[1] * a[2] * a[3] * a[4] * a[5] * a[6] * a[7];
     27 }, 0, 1, 40320);
     28 
     29 test(function f3() {
     30   return a[3] * a[0] * a[6] * a[7] * a[5] * a[1] * a[4] * a[2];
     31 }, 0, 1, 40320);
     32 
     33 test(function f4(b) {
     34   return a[b+3] * a[0] * a[b+6] * a[7] * a[b+5] * a[1] * a[b+4] * a[2];
     35 }, 0, 1, 40320);
     36 
     37 test(function f5(b) {
     38   return a[b+1] * a[0] * a[b+4] * a[7] * a[b+3] * a[1] * a[b+2] * a[2];
     39 }, 2, 3, 40320);
     40 
     41 test(function f6(b) {
     42   var c;
     43   if (b) c = a[3] * a[0] * a[6] * a[7];
     44   return c * a[5] * a[1] * a[4] * a[2];
     45 }, true, false, 40320);
     46 
     47 test(function f7(b) {
     48   var c = a[7];
     49   if (b) c *= a[3] * a[0] * a[6];
     50   return c * a[5] * a[1] * a[4] * a[2];
     51 }, true, false, 40320);
     52 
     53 test(function f8(b) {
     54   var c = a[7];
     55   if (b) c *= a[3] * a[0] * a[6];
     56   return c * a[5] * a[10] * a[4] * a[2];
     57 }, true, false, NaN);
     58 
     59 test(function f9(b) {
     60   var c = a[1];
     61   if (b) {
     62     c *= a[3] * a[0] * a[6];
     63   } else {
     64     c = a[6] * a[5] * a[4];
     65   }
     66   return c * a[5] * a[7] * a[4] * a[2];
     67 }, true, false, 40320);
     68 
     69 test(function fa(b) {
     70   var c = a[1];
     71   if (b) {
     72     c = a[6] * a[b+5] * a[4];
     73   } else {
     74     c *= a[b+3] * a[0] * a[b+6];
     75   }
     76   return c * a[5] * a[b+7] * a[4] * a[2];
     77 }, 0, 1, 40320);
     78 
     79 test(function fb(b) {
     80   var c = a[b-3];
     81   if (b != 4) {
     82     c = a[6] * a[b+1] * a[4];
     83   } else {
     84     c *= a[b-1] * a[0] * a[b+2];
     85   }
     86   return c * a[5] * a[b+3] * a[4] * a[b-2];
     87 }, 4, 3, 40320);
     88 
     89 test(function fc(b) {
     90   var c = a[b-3];
     91   if (b != 4) {
     92     c = a[6] * a[b+1] * a[4];
     93   } else {
     94     c *= a[b-1] * a[0] * a[b+2];
     95   }
     96   return c * a[5] * a[b+3] * a[4] * a[b-2];
     97 }, 6, 3, NaN);
     98 
     99 test(function fd(b) {
    100   var c = a[b-3];
    101   if (b != 4) {
    102     c = a[6] * a[b+1] * a[4];
    103   } else {
    104     c *= a[b-1] * a[0] * a[b+2];
    105   }
    106   return c * a[5] * a[b+3] * a[4] * a[b-2];
    107 }, 1, 4, NaN);
    108 
    109 test(function fe(b) {
    110   var c = 1;
    111   for (var i = 1; i < b-1; i++) {
    112     c *= a[i-1] * a[i] * a[i+1];
    113   }
    114   return c;
    115 }, 8, 4, (40320 / 8 / 7) * (40320 / 8) * (40320 / 2));
    116 
    117 test(function ff(b) {
    118   var c = 0;
    119   for (var i = 0; i < b; i++) {
    120     c += a[3] * a[0] * a[6] * a[7] * a[5] * a[1] * a[4] * a[2];
    121   }
    122   return c;
    123 }, 100, 4, 40320 * 100);
    124