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// modification, are permitted provided that the following conditions are
// met:
//
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// Flags: --allow-natives-syntax --opt --no-always-opt --no-use-osr
// Flags: --interrupt-budget=1024

function o1() { }
%PrepareFunctionForOptimization(o1);
o1(); o1();
%OptimizeFunctionOnNextCall(o1);
o1();
assertOptimized(o1);

// Test the %NeverOptimizeFunction runtime call.
function u1(i) { return i+1 }
function u2(i) { return i+1 }
%NeverOptimizeFunction(u1);
for (let i = 0; i < 1000; ++i) {
  u1();
  u2();
}
assertUnoptimized(u1);
assertOptimized(u2);