v8/test/mjsunit/compiler/regress-3249650.js

// Copyright 2010 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
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//
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Among other things, this code covers the case of deoptimization
// after a compare expression in an effect context.

function f0(x) { try { } catch (e) {}}
function f1(x) { try { } catch (e) {}}
function f2(x) { try { } catch (e) {}}
function f3(x) { try { } catch (e) {}}

var object = { a: "", b: false, c: {}};
object.f = function(x) { return this; }


function test(x) {
  f0(x);
  f1(x);
  f2(x);
  f3(x);
  x.a.b == "";
  object.f("A").b = true;
  object.f("B").a = "";
  object.f("C").c.display = "A";
  object.f("D").c.display = "A";
}

var x = {a: {b: "" }};
for (var i = 0; i < 20000; i++) test(x);