9447014780
- set "can be minus zero" flag properly so minus-zero checks are skipped - skip "integer result?" check in division code when uses are truncating - drive-by cleanup: consolidated computation of kCanOverflow flag for Add/Sub into range inference phase BUG=v8:2132 R=svenpanne@chromium.org Review URL: https://codereview.chromium.org/16741002 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
49 lines
1.9 KiB
JavaScript
49 lines
1.9 KiB
JavaScript
// Copyright 2013 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
|
|
|
|
function mul(x, y) {
|
|
return (x * y) | 0;
|
|
}
|
|
|
|
mul(0, 0);
|
|
mul(0, 0);
|
|
%OptimizeFunctionOnNextCall(mul);
|
|
assertEquals(0, mul(0, -1));
|
|
assertTrue(%GetOptimizationStatus(mul) != 2);
|
|
|
|
function div(x, y) {
|
|
return (x / y) | 0;
|
|
}
|
|
|
|
div(4, 2);
|
|
div(4, 2);
|
|
%OptimizeFunctionOnNextCall(div);
|
|
assertEquals(1, div(5, 3));
|
|
assertTrue(%GetOptimizationStatus(div) != 2);
|