ed968b1042
TEST=existing unit tests still pass Review URL: http://codereview.chromium.org/6821009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
108 lines
3.0 KiB
JavaScript
108 lines
3.0 KiB
JavaScript
// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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function f(x) {
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return ~x;
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}
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f(42);
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assertEquals(~12, f(12.45));
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assertEquals(~42, f(42.87));
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var a = 1, b = 2, c = 4, d = 8;
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function g() {
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return a | (b | (c | d));
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}
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g();
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c = "16";
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assertEquals(1 | 2 | 16 | 8, g());
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// Test deopt when global function changes.
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function h() {
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return g();
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}
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assertEquals(1 | 2 | 16 | 8, h());
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g = function() { return 42; };
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assertEquals(42, h());
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// Test deopt when map changes.
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var obj = {};
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obj.g = g;
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function k(o) {
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return o.g();
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}
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for (var i = 0; i < 5; i++) k(obj);
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%OptimizeFunctionOnNextCall(k);
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k(obj);
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assertEquals(42, k(obj));
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assertEquals(87, k({g: function() { return 87; }}));
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// Test deopt with assignments to parameters.
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function p(x,y) {
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x = 42;
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y = 1;
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y = y << "0";
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return x | y;
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}
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assertEquals(43, p(0,0));
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// Test deopt with literals on the expression stack.
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function LiteralToStack(x) {
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return 'lit[' + (x + ']');
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}
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assertEquals('lit[-87]', LiteralToStack(-87));
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assertEquals('lit[0]', LiteralToStack(0));
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assertEquals('lit[42]', LiteralToStack(42));
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// Test deopt before call.
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var str = "abc";
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var r;
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function CallCharAt(n) { return str.charAt(n); }
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for (var i = 0; i < 5; i++) {
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r = CallCharAt(0);
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}
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%OptimizeFunctionOnNextCall(CallCharAt);
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r = CallCharAt(0);
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assertEquals("a", r);
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// Test of deopt in presence of spilling.
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function add4(a,b,c,d) {
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return a+b+c+d;
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}
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assertEquals(0x40000003, add4(1,1,2,0x3fffffff));
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