mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
217 lines
11 KiB
217 lines
11 KiB
13 years ago
|
// 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 --nouse_inlining
|
||
|
|
|
||
|
|
// Use this function as reference. Make sure it is not inlined.
|
||
|
|
function div(a, b) {
|
||
|
|
return a / b;
|
||
|
|
}
|
||
|
|
|
||
|
|
var limit = 0x1000000;
|
||
|
|
var exhaustive_limit = 100;
|
||
|
|
var step = 10;
|
||
|
|
var values = [0x10000001,
|
||
|
|
0x12345678,
|
||
|
|
-0x789abcdf, // 0x87654321
|
||
|
|
0x01234567,
|
||
|
|
0x76543210,
|
||
|
|
-0x80000000, // 0x80000000
|
||
|
|
0x7fffffff,
|
||
|
|
-0x0fffffff, // 0xf0000001
|
||
|
|
0x00000010,
|
||
|
|
-0x01000000 // 0xff000000
|
||
|
|
];
|
||
|
|
|
||
|
|
function test_div() {
|
||
|
|
var c = 0;
|
||
|
|
for (var k = 0; k <= limit; k++) {
|
||
|
|
if (k > exhaustive_limit) { c += step; k += c; }
|
||
|
|
assertEquals(Math.floor(div(k, 1)), Math.floor(k / 1));
|
||
|
|
assertEquals(Math.floor(div(k, -1)), Math.floor(k / -1));
|
||
|
|
assertEquals(Math.floor(div(k, 2)), Math.floor(k / 2));
|
||
|
|
assertEquals(Math.floor(div(k, -2)), Math.floor(k / -2));
|
||
|
|
assertEquals(Math.floor(div(k, 3)), Math.floor(k / 3));
|
||
|
|
assertEquals(Math.floor(div(k, -3)), Math.floor(k / -3));
|
||
|
|
assertEquals(Math.floor(div(k, 4)), Math.floor(k / 4));
|
||
|
|
assertEquals(Math.floor(div(k, -4)), Math.floor(k / -4));
|
||
|
|
assertEquals(Math.floor(div(k, 5)), Math.floor(k / 5));
|
||
|
|
assertEquals(Math.floor(div(k, -5)), Math.floor(k / -5));
|
||
|
|
assertEquals(Math.floor(div(k, 6)), Math.floor(k / 6));
|
||
|
|
assertEquals(Math.floor(div(k, -6)), Math.floor(k / -6));
|
||
|
|
assertEquals(Math.floor(div(k, 7)), Math.floor(k / 7));
|
||
|
|
assertEquals(Math.floor(div(k, -7)), Math.floor(k / -7));
|
||
|
|
assertEquals(Math.floor(div(k, 8)), Math.floor(k / 8));
|
||
|
|
assertEquals(Math.floor(div(k, -8)), Math.floor(k / -8));
|
||
|
|
assertEquals(Math.floor(div(k, 9)), Math.floor(k / 9));
|
||
|
|
assertEquals(Math.floor(div(k, -9)), Math.floor(k / -9));
|
||
|
|
assertEquals(Math.floor(div(k, 10)), Math.floor(k / 10));
|
||
|
|
assertEquals(Math.floor(div(k, -10)), Math.floor(k / -10));
|
||
|
|
assertEquals(Math.floor(div(k, 11)), Math.floor(k / 11));
|
||
|
|
assertEquals(Math.floor(div(k, -11)), Math.floor(k / -11));
|
||
|
|
assertEquals(Math.floor(div(k, 12)), Math.floor(k / 12));
|
||
|
|
assertEquals(Math.floor(div(k, -12)), Math.floor(k / -12));
|
||
|
|
assertEquals(Math.floor(div(k, 13)), Math.floor(k / 13));
|
||
|
|
assertEquals(Math.floor(div(k, -13)), Math.floor(k / -13));
|
||
|
|
assertEquals(Math.floor(div(k, 14)), Math.floor(k / 14));
|
||
|
|
assertEquals(Math.floor(div(k, -14)), Math.floor(k / -14));
|
||
|
|
assertEquals(Math.floor(div(k, 15)), Math.floor(k / 15));
|
||
|
|
assertEquals(Math.floor(div(k, -15)), Math.floor(k / -15));
|
||
|
|
assertEquals(Math.floor(div(k, 16)), Math.floor(k / 16));
|
||
|
|
assertEquals(Math.floor(div(k, -16)), Math.floor(k / -16));
|
||
|
|
assertEquals(Math.floor(div(k, 17)), Math.floor(k / 17));
|
||
|
|
assertEquals(Math.floor(div(k, -17)), Math.floor(k / -17));
|
||
|
|
assertEquals(Math.floor(div(k, 18)), Math.floor(k / 18));
|
||
|
|
assertEquals(Math.floor(div(k, -18)), Math.floor(k / -18));
|
||
|
|
assertEquals(Math.floor(div(k, 19)), Math.floor(k / 19));
|
||
|
|
assertEquals(Math.floor(div(k, -19)), Math.floor(k / -19));
|
||
|
|
assertEquals(Math.floor(div(k, 20)), Math.floor(k / 20));
|
||
|
|
assertEquals(Math.floor(div(k, -20)), Math.floor(k / -20));
|
||
|
|
assertEquals(Math.floor(div(k, 21)), Math.floor(k / 21));
|
||
|
|
assertEquals(Math.floor(div(k, -21)), Math.floor(k / -21));
|
||
|
|
assertEquals(Math.floor(div(k, 22)), Math.floor(k / 22));
|
||
|
|
assertEquals(Math.floor(div(k, -22)), Math.floor(k / -22));
|
||
|
|
assertEquals(Math.floor(div(k, 23)), Math.floor(k / 23));
|
||
|
|
assertEquals(Math.floor(div(k, -23)), Math.floor(k / -23));
|
||
|
|
assertEquals(Math.floor(div(k, 24)), Math.floor(k / 24));
|
||
|
|
assertEquals(Math.floor(div(k, -24)), Math.floor(k / -24));
|
||
|
|
assertEquals(Math.floor(div(k, 25)), Math.floor(k / 25));
|
||
|
|
assertEquals(Math.floor(div(k, -25)), Math.floor(k / -25));
|
||
|
|
assertEquals(Math.floor(div(k, 125)), Math.floor(k / 125));
|
||
|
|
assertEquals(Math.floor(div(k, -125)), Math.floor(k / -125));
|
||
|
|
assertEquals(Math.floor(div(k, 625)), Math.floor(k / 625));
|
||
|
|
assertEquals(Math.floor(div(k, -625)), Math.floor(k / -625));
|
||
|
|
}
|
||
|
|
c = 0;
|
||
|
|
for (var k = 0; k <= limit; k++) {
|
||
|
|
if (k > exhaustive_limit) { c += step; k += c; }
|
||
|
|
assertEquals(Math.floor(div(-k, 1)), Math.floor(-k / 1));
|
||
|
|
assertEquals(Math.floor(div(-k, -1)), Math.floor(-k / -1));
|
||
|
|
assertEquals(Math.floor(div(-k, 2)), Math.floor(-k / 2));
|
||
|
|
assertEquals(Math.floor(div(-k, -2)), Math.floor(-k / -2));
|
||
|
|
assertEquals(Math.floor(div(-k, 3)), Math.floor(-k / 3));
|
||
|
|
assertEquals(Math.floor(div(-k, -3)), Math.floor(-k / -3));
|
||
|
|
assertEquals(Math.floor(div(-k, 4)), Math.floor(-k / 4));
|
||
|
|
assertEquals(Math.floor(div(-k, -4)), Math.floor(-k / -4));
|
||
|
|
assertEquals(Math.floor(div(-k, 5)), Math.floor(-k / 5));
|
||
|
|
assertEquals(Math.floor(div(-k, -5)), Math.floor(-k / -5));
|
||
|
|
assertEquals(Math.floor(div(-k, 6)), Math.floor(-k / 6));
|
||
|
|
assertEquals(Math.floor(div(-k, -6)), Math.floor(-k / -6));
|
||
|
|
assertEquals(Math.floor(div(-k, 7)), Math.floor(-k / 7));
|
||
|
|
assertEquals(Math.floor(div(-k, -7)), Math.floor(-k / -7));
|
||
|
|
assertEquals(Math.floor(div(-k, 8)), Math.floor(-k / 8));
|
||
|
|
assertEquals(Math.floor(div(-k, -8)), Math.floor(-k / -8));
|
||
|
|
assertEquals(Math.floor(div(-k, 9)), Math.floor(-k / 9));
|
||
|
|
assertEquals(Math.floor(div(-k, -9)), Math.floor(-k / -9));
|
||
|
|
assertEquals(Math.floor(div(-k, 10)), Math.floor(-k / 10));
|
||
|
|
assertEquals(Math.floor(div(-k, -10)), Math.floor(-k / -10));
|
||
|
|
assertEquals(Math.floor(div(-k, 11)), Math.floor(-k / 11));
|
||
|
|
assertEquals(Math.floor(div(-k, -11)), Math.floor(-k / -11));
|
||
|
|
assertEquals(Math.floor(div(-k, 12)), Math.floor(-k / 12));
|
||
|
|
assertEquals(Math.floor(div(-k, -12)), Math.floor(-k / -12));
|
||
|
|
assertEquals(Math.floor(div(-k, 13)), Math.floor(-k / 13));
|
||
|
|
assertEquals(Math.floor(div(-k, -13)), Math.floor(-k / -13));
|
||
|
|
assertEquals(Math.floor(div(-k, 14)), Math.floor(-k / 14));
|
||
|
|
assertEquals(Math.floor(div(-k, -14)), Math.floor(-k / -14));
|
||
|
|
assertEquals(Math.floor(div(-k, 15)), Math.floor(-k / 15));
|
||
|
|
assertEquals(Math.floor(div(-k, -15)), Math.floor(-k / -15));
|
||
|
|
assertEquals(Math.floor(div(-k, 16)), Math.floor(-k / 16));
|
||
|
|
assertEquals(Math.floor(div(-k, -16)), Math.floor(-k / -16));
|
||
|
|
assertEquals(Math.floor(div(-k, 17)), Math.floor(-k / 17));
|
||
|
|
assertEquals(Math.floor(div(-k, -17)), Math.floor(-k / -17));
|
||
|
|
assertEquals(Math.floor(div(-k, 18)), Math.floor(-k / 18));
|
||
|
|
assertEquals(Math.floor(div(-k, -18)), Math.floor(-k / -18));
|
||
|
|
assertEquals(Math.floor(div(-k, 19)), Math.floor(-k / 19));
|
||
|
|
assertEquals(Math.floor(div(-k, -19)), Math.floor(-k / -19));
|
||
|
|
assertEquals(Math.floor(div(-k, 20)), Math.floor(-k / 20));
|
||
|
|
assertEquals(Math.floor(div(-k, -20)), Math.floor(-k / -20));
|
||
|
|
assertEquals(Math.floor(div(-k, 21)), Math.floor(-k / 21));
|
||
|
|
assertEquals(Math.floor(div(-k, -21)), Math.floor(-k / -21));
|
||
|
|
assertEquals(Math.floor(div(-k, 22)), Math.floor(-k / 22));
|
||
|
|
assertEquals(Math.floor(div(-k, -22)), Math.floor(-k / -22));
|
||
|
|
assertEquals(Math.floor(div(-k, 23)), Math.floor(-k / 23));
|
||
|
|
assertEquals(Math.floor(div(-k, -23)), Math.floor(-k / -23));
|
||
|
|
assertEquals(Math.floor(div(-k, 24)), Math.floor(-k / 24));
|
||
|
|
assertEquals(Math.floor(div(-k, -24)), Math.floor(-k / -24));
|
||
|
|
assertEquals(Math.floor(div(-k, 25)), Math.floor(-k / 25));
|
||
|
|
assertEquals(Math.floor(div(-k, -25)), Math.floor(-k / -25));
|
||
|
|
assertEquals(Math.floor(div(-k, 125)), Math.floor(-k / 125));
|
||
|
|
assertEquals(Math.floor(div(-k, -125)), Math.floor(-k / -125));
|
||
|
|
assertEquals(Math.floor(div(-k, 625)), Math.floor(-k / 625));
|
||
|
|
assertEquals(Math.floor(div(-k, -625)), Math.floor(-k / -625));
|
||
|
|
}
|
||
|
|
// Test for edge cases.
|
||
|
|
// Use (values[key] | 0) to force the integer type.
|
||
|
|
for (var i = 0; i < values.length; i++) {
|
||
|
|
for (var j = 0; j < values.length; j++) {
|
||
|
|
assertEquals(Math.floor(div((values[i] | 0), (values[j] | 0))),
|
||
|
|
Math.floor((values[i] | 0) / (values[j] | 0)));
|
||
|
|
assertEquals(Math.floor(div(-(values[i] | 0), (values[j] | 0))),
|
||
|
|
Math.floor(-(values[i] | 0) / (values[j] | 0)));
|
||
|
|
assertEquals(Math.floor(div((values[i] | 0), -(values[j] | 0))),
|
||
|
|
Math.floor((values[i] | 0) / -(values[j] | 0)));
|
||
|
|
assertEquals(Math.floor(div(-(values[i] | 0), -(values[j] | 0))),
|
||
|
|
Math.floor(-(values[i] | 0) / -(values[j] | 0)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
test_div();
|
||
|
|
%OptimizeFunctionOnNextCall(test_div);
|
||
|
|
test_div();
|
||
|
|
|
||
|
|
// Test for negative zero and overflow.
|
||
|
|
// Separate the tests to prevent deoptimizations from making the other optimized
|
||
|
|
// test unreachable.
|
||
|
|
|
||
|
|
function IsNegativeZero(x) {
|
||
|
|
assertTrue(x == 0); // Is 0 or -0.
|
||
|
|
var y = 1 / x;
|
||
|
|
assertFalse(isFinite(y));
|
||
|
|
return y < 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
function test_div_deopt_minus_zero() {
|
||
|
|
var zero_in_array = [0];
|
||
|
|
assertTrue(IsNegativeZero(Math.floor((zero_in_array[0] | 0) / -1)));
|
||
|
|
}
|
||
|
|
|
||
|
|
function test_div_deopt_overflow() {
|
||
|
|
// We box the value in an array to avoid constant propagation.
|
||
|
|
var min_int_in_array = [-2147483648];
|
||
|
|
// We use '| 0' to force the representation to int32.
|
||
|
|
assertEquals(-min_int_in_array[0],
|
||
|
|
Math.floor((min_int_in_array[0] | 0) / -1));
|
||
|
|
}
|
||
|
|
|
||
|
|
test_div_deopt_minus_zero();
|
||
|
|
test_div_deopt_overflow();
|
||
|
|
%OptimizeFunctionOnNextCall(test_div_deopt_minus_zero);
|
||
|
|
%OptimizeFunctionOnNextCall(test_div_deopt_overflow);
|
||
|
|
test_div_deopt_minus_zero();
|
||
|
|
test_div_deopt_overflow();
|