src/v8/test/mjsunit/lea-add.js

// Copyright 2013 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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//       notice, this list of conditions and the following disclaimer.
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//       with the distribution.
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//
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// Flags: --allow-natives-syntax

function a() {
  var sum = 0;
  for (var i = 0; i < 500; ++i) {
    sum = (i + sum) | 0;
  }
  return sum;
}

function b() {
  var sum = 0;
  for (var i = -500; i < 0; ++i) {
    sum = (i + sum) | 0;
  }
  return sum;
}

function c() {
  var sum = 0;
  for (var i = 0; i < 500; ++i) {
    sum += (i + -0x7fffffff) | 0;
  }
  return sum;
}

function d() {
  var sum = 0;
  for (var i = -501; i < 0; ++i) {
    sum += (i + 501) | 0;
  }
  return sum;
}

a();
a();
%OptimizeFunctionOnNextCall(a);
assertEquals(124750, a());
assertEquals(124750, a());

b();
b();
%OptimizeFunctionOnNextCall(b);
assertEquals(-125250, b());
assertEquals(-125250, b());

c();
c();
%OptimizeFunctionOnNextCall(c);
assertEquals(-1073741698750, c());
assertEquals(-1073741698750, c());

d();
d();
%OptimizeFunctionOnNextCall(d);
assertEquals(125250, d());
assertEquals(125250, d());