v8/test/mjsunit/compiler/inline-closures.js

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// Flags: --allow-natives-syntax

// Test inlining of multiple closures derived from one shared function.

function mkClosure(continuation) {
  return function(value) {
    if (continuation == 'g') return this.g(value);
    if (continuation == 'h') return this.h(value);
    return value.value;
  }
}

var object = {};
object.f = mkClosure('g');
object.g = mkClosure('h');
object.h = mkClosure('x');

%PrepareFunctionForOptimization(object.f);
assertSame(1, object.f({value:1}));
assertSame(2, object.f({value:2}));
%OptimizeFunctionOnNextCall(object.f);
assertSame(3, object.f({value:3}));
assertSame(undefined, object.f({}));