v8/test/mjsunit/compiler/compare-map-elim2.js

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// Copyright 2010 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 --check-elimination
function test_empty() {
function foo(o) {
return { value: o.value };
}
function Base() {
this.v_ = 5;
}
Base.prototype.__defineGetter__("value", function() { return 1; });
var a = new Base();
a.a = 1;
foo(a);
Base.prototype.__defineGetter__("value", function() { return this.v_; });
var b = new Base();
b.b = 1;
foo(b);
var d = new Base();
d.d = 1;
d.value;
%OptimizeFunctionOnNextCall(foo);
var o = foo(b);
}
function test_narrow1() {
function foo(o) {
return { value: o.value };
}
function Base() {
this.v_ = 5;
}
Base.prototype.__defineGetter__("value", function() { return 1; });
var a = new Base();
a.a = 1;
foo(a);
Base.prototype.__defineGetter__("value", function() { return this.v_; });
var b = new Base();
b.b = 1;
foo(b);
var c = new Base();
c.c = 1;
foo(c);
var d = new Base();
d.d = 1;
d.value;
%OptimizeFunctionOnNextCall(foo);
var o = foo(b);
}
function test_narrow2() {
function foo(o, flag) {
return { value: o.value(flag) };
}
function Base() {
this.v_ = 5;
}
Base.prototype.value = function(flag) { return flag ? this.v_ : this.v_; };
var a = new Base();
a.a = 1;
foo(a, false);
foo(a, false);
var b = new Base();
b.b = 1;
foo(b, true);
var c = new Base();
c.c = 1;
foo(c, true);
var d = new Base();
d.d = 1;
d.value(true);
%OptimizeFunctionOnNextCall(foo);
var o = foo(b);
}
test_empty();
test_narrow1();
test_narrow2();