v8/test/mjsunit/compiler/escape-analysis-deopt-5.js

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// Flags: --allow-natives-syntax --turbo-escape

function f() {
  var x = new Array(2);
  x[0] = 23.1234;
  x[1] = 25.1234;
  %DeoptimizeNow();
  return x[0];
}

%PrepareFunctionForOptimization(f);
assertEquals(f(), 23.1234);
assertEquals(f(), 23.1234);
%OptimizeFunctionOnNextCall(f);
assertEquals(f(), 23.1234);