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      1 // Copyright 2015 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 --use-osr --turbo-osr
      6 
      7 "use strict";
      8 
      9 function test(expected, func) {
     10   assertEquals(expected, func());
     11   assertEquals(expected, func());
     12   assertEquals(expected, func());
     13 }
     14 
     15 function bar() {
     16   var result;
     17   {
     18     let sum = 0;
     19     for (let i = 0; i < 90; i++) {
     20       sum += i;
     21       if (i == 45) %OptimizeOsr();
     22     }
     23     result = sum;
     24   }
     25   return result;
     26 }
     27 
     28 test(4005, bar);
     29 
     30 function baz() {
     31   let sum = 0;
     32   for (let i = 0; i < 2; i++) {
     33     sum = 2;
     34     %OptimizeOsr();
     35   }
     36   return sum;
     37 }
     38 
     39 test(2, baz);
     40 
     41 function qux() {
     42   var result = 0;
     43   for (let i = 0; i < 2; i++) {
     44     result = i;
     45     %OptimizeOsr();
     46   }
     47   return result;
     48 }
     49 
     50 test(1, qux);
     51 
     52 function nux() {
     53   var result = 0;
     54   for (let i = 0; i < 2; i++) {
     55     {
     56       let sum = i;
     57       %OptimizeOsr();
     58       result = sum;
     59     }
     60   }
     61   return result;
     62 }
     63 
     64 test(1, nux);
     65 
     66 function blo() {
     67   var result;
     68   {
     69     let sum = 0;
     70     for (let i = 0; i < 90; i++) {
     71       sum += i;
     72       if (i == 45) %OptimizeOsr();
     73     }
     74     result = ret;
     75     function ret() {
     76       return sum;
     77     }
     78   }
     79   return result;
     80 }
     81 
     82 test(4005, blo());
     83