90b3370374
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5922 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
102 lines
2.9 KiB
JavaScript
102 lines
2.9 KiB
JavaScript
// 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.
|
|
|
|
function f(x) {
|
|
return ~x;
|
|
}
|
|
|
|
f(42);
|
|
assertEquals(~12, f(12.45));
|
|
assertEquals(~42, f(42.87));
|
|
|
|
|
|
var a = 1, b = 2, c = 4, d = 8;
|
|
function g() {
|
|
return a | (b | (c | d));
|
|
}
|
|
|
|
g();
|
|
c = "16";
|
|
assertEquals(1 | 2 | 16 | 8, g());
|
|
|
|
|
|
// Test deopt when global function changes.
|
|
function h() {
|
|
return g();
|
|
}
|
|
assertEquals(1 | 2 | 16 | 8, h());
|
|
g = function() { return 42; };
|
|
assertEquals(42, h());
|
|
|
|
|
|
// Test deopt when map changes.
|
|
var obj = {};
|
|
obj.g = g;
|
|
function k(o) {
|
|
return o.g();
|
|
}
|
|
for (var i = 0; i < 1000000; i++) k(obj);
|
|
assertEquals(42, k(obj));
|
|
assertEquals(87, k({g: function() { return 87; }}));
|
|
|
|
|
|
// Test deopt with assignments to parameters.
|
|
function p(x,y) {
|
|
x = 42;
|
|
y = 1;
|
|
y = y << "0";
|
|
return x | y;
|
|
}
|
|
assertEquals(43, p(0,0));
|
|
|
|
|
|
// Test deopt with literals on the expression stack.
|
|
function LiteralToStack(x) {
|
|
return 'lit[' + (x + ']');
|
|
}
|
|
|
|
assertEquals('lit[-87]', LiteralToStack(-87));
|
|
assertEquals('lit[0]', LiteralToStack(0));
|
|
assertEquals('lit[42]', LiteralToStack(42));
|
|
|
|
|
|
// Test deopt before call.
|
|
var str = "abc";
|
|
var r;
|
|
function CallCharAt(n) { return str.charAt(n); }
|
|
for (var i = 0; i < 1000000; i++) {
|
|
r = CallCharAt(0);
|
|
}
|
|
assertEquals("a", r);
|
|
|
|
|
|
// Test of deopt in presence of spilling.
|
|
function add4(a,b,c,d) {
|
|
return a+b+c+d;
|
|
}
|
|
assertEquals(0x40000003, add4(1,1,2,0x3fffffff));
|