text: // Copyright 2012 the V8 project authors. All rights reserved.
  // Redistribution and use in source and binary forms, with or without
  // 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.
  //     * Redistributions in binary form must reproduce the above
  //       copyright notice, this list of conditions and the following
  //       disclaimer in the documentation and/or other materials provided
  //       with the distribution.
  //     * Neither the name of Google Inc. nor the names of its
  //       contributors may be used to endorse or promote products derived
  //       from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  // Flags: --allow-natives-syntax --inline-construct
  
  // Test inlining of constructor calls.
  
  function TestInlinedConstructor(constructor, closure) {
    var result;
    var counter = { value:0 };
    var noDeopt = { deopt:0 };
    var forceDeopt = { /*empty*/ };
  
    result = closure(constructor, 11, noDeopt, counter);
    assertEquals(11, result);
    assertEquals(1, counter.value);
  
    result = closure(constructor, 23, noDeopt, counter);
    assertEquals(23, result);
    assertEquals(2, counter.value);
  
    %OptimizeFunctionOnNextCall(closure);
    result = closure(constructor, 42, noDeopt, counter);
    assertEquals(42, result);
    assertEquals(3, counter.value);
  
    result = closure(constructor, 127, forceDeopt, counter);
    assertEquals(127, result)
    assertEquals(4, counter.value);
  
    %DeoptimizeFunction(closure);
    %ClearFunctionTypeFeedback(closure);
    %ClearFunctionTypeFeedback(constructor);
  }
  
  function value_context(constructor, val, deopt, counter) {
    var obj = new constructor(val, deopt, counter);
    return obj.x;
  }
  
  function test_context(constructor, val, deopt, counter) {
    if (!new constructor(val, deopt, counter)) {
      assertUnreachable("should not happen");
    }
    return val;
  }
  
  function effect_context(constructor, val, deopt, counter) {
    new constructor(val, deopt, counter);
    return val;
  }
  
  function TestInAllContexts(constructor) {
    TestInlinedConstructor(constructor, value_context);
    TestInlinedConstructor(constructor, test_context);
    TestInlinedConstructor(constructor, effect_context);
  }
  
  
  // Test constructor returning nothing in all contexts.
  function c1(val, deopt, counter) {
    deopt.deopt;
    this.x = val;
    counter.value++;
  }
  TestInAllContexts(c1);
  
  
  // Test constructor returning an object in all contexts.
  function c2(val, deopt, counter) {
    var obj = {};
    deopt.deopt;
    obj.x = val;
    counter.value++;
    return obj;
  }
  TestInAllContexts(c2);
  
  
  // Test constructor returning a primitive value in all contexts.
  function c3(val, deopt, counter) {
    deopt.deopt;
    this.x = val;
    counter.value++;
    return "not an object";
  }
  TestInAllContexts(c3);
  
  
  // Test constructor called with too many arguments.
  function c_too_many(a, b) {
    this.x = a + b;
  }
  function f_too_many(a, b, c) {
    var obj = new c_too_many(a, b, c);
    return obj.x;
  }
  assertEquals(23, f_too_many(11, 12, 1));
  assertEquals(42, f_too_many(23, 19, 1));
  %OptimizeFunctionOnNextCall(f_too_many);
  assertEquals(43, f_too_many(1, 42, 1));
  assertEquals("foobar", f_too_many("foo", "bar", "baz"))
  
  
  // Test constructor called with too few arguments.
  function c_too_few(a, b) {
    assertSame(undefined, b);
    this.x = a + 1;
  }
  function f_too_few(a) {
    var obj = new c_too_few(a);
    return obj.x;
  }
  assertEquals(12, f_too_few(11));
  assertEquals(24, f_too_few(23));
  %OptimizeFunctionOnNextCall(f_too_few);
  assertEquals(2, f_too_few(1));
  assertEquals("foo1", f_too_few("foo"))
  
  
  // Test constructor that cannot be inlined.
  function c_unsupported_syntax(val, deopt, counter) {
    try {
      deopt.deopt;
      this.x = val;
      counter.value++;
    } catch(e) {
      throw new Error();
    }
  }
  TestInAllContexts(c_unsupported_syntax);
  
  
  // Regression test: Inlined constructors called as functions do not get their
  // implicit receiver object set to undefined, even in strict mode.
  function c_strict(val, deopt, counter) {
    "use strict";
    deopt.deopt;
    this.x = val;
    counter.value++;
  }
  TestInAllContexts(c_strict);
  