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// 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
var imul_func = Math.imul;
function imul_polyfill(a, b) {
var ah = (a >>> 16) & 0xffff;
var al = a & 0xffff;
var bh = (b >>> 16) & 0xffff;
var bl = b & 0xffff;
return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0) | 0);
}
function TestMathImul(expected, a, b) {
function imul_meth_closure(a, b) { return Math.imul(a, b); }
function imul_func_closure(a, b) { return imul_func(a, b); }
// Test reference implementation.
assertEquals(expected, imul_polyfill(a, b));
// Test direct method call.
assertEquals(expected, Math.imul(a, b));
// Test direct function call.
assertEquals(expected, imul_func(a, b));
// Test optimized method call inside closure.
assertEquals(expected, imul_meth_closure(a, b));
assertEquals(expected, imul_meth_closure(a, b));
%OptimizeFunctionOnNextCall(imul_meth_closure);
assertEquals(expected, imul_meth_closure(a, b));
// Test optimized function call inside closure.
assertEquals(expected, imul_func_closure(a, b));
assertEquals(expected, imul_func_closure(a, b));
%OptimizeFunctionOnNextCall(imul_func_closure);
assertEquals(expected, imul_func_closure(a, b));
// Deoptimize closures and forget type feedback.
%DeoptimizeFunction(imul_meth_closure);
%DeoptimizeFunction(imul_func_closure);
%ClearFunctionFeedback(imul_meth_closure);
%ClearFunctionFeedback(imul_func_closure);
}
TestMathImul(8, 2, 4);
TestMathImul(-8, -1, 8);
TestMathImul(4, -2, -2);
TestMathImul(-5, 0xffffffff, 5);
TestMathImul(-10, 0xfffffffe, 5);
TestMathImul(0, false, 7);
TestMathImul(0, 7, false);
TestMathImul(0, false, false);
TestMathImul(7, true, 7);
TestMathImul(7, 7, true);
TestMathImul(1, true, true);
TestMathImul(0, false, true);
TestMathImul(0, true, false);
TestMathImul(0, undefined, 7);
TestMathImul(0, 7, undefined);
TestMathImul(0, undefined, undefined);
TestMathImul(0, -0, 7);
TestMathImul(0, 7, -0);
TestMathImul(0, 0.1, 7);
TestMathImul(0, 7, 0.1);
TestMathImul(0, 0.9, 7);
TestMathImul(0, 7, 0.9);
TestMathImul(7, 1.1, 7);
TestMathImul(7, 7, 1.1);
TestMathImul(7, 1.9, 7);
TestMathImul(7, 7, 1.9);
TestMathImul(0, "str", 7);
TestMathImul(0, 7, "str");
TestMathImul(0, {}, 7);
TestMathImul(0, 7, {});
TestMathImul(0, [], 7);
TestMathImul(0, 7, []);
// 2^30 is a smi boundary on arm and ia32.
var two_30 = 1 << 30;
TestMathImul(-two_30, two_30, 7);
TestMathImul(-two_30, 7, two_30);
TestMathImul(0, two_30, two_30);
TestMathImul(two_30, -two_30, 7);
TestMathImul(two_30, 7, -two_30);
TestMathImul(0, -two_30, -two_30);
// 2^31 is a smi boundary on x64.
var two_31 = 2 * two_30;
TestMathImul(-two_31, two_31, 7);
TestMathImul(-two_31, 7, two_31);
TestMathImul(0, two_31, two_31);
TestMathImul(-two_31, -two_31, 7);
TestMathImul(-two_31, 7, -two_31);
TestMathImul(0, -two_31, -two_31);
// 2^31 - 1 is the largest int32 value.
var max_val = two_31 - 1;
TestMathImul(two_31 - 7, max_val, 7);
TestMathImul(two_31 - 7, 7, max_val);
TestMathImul(1, max_val, max_val);
// 2^16 is a boundary value that overflows when squared.
var two_16 = 1 << 16;
TestMathImul(0, two_16, two_16);
TestMathImul(-two_16, two_16 - 1, two_16);
TestMathImul(-two_16, two_16, two_16 - 1);
TestMathImul(-2 * two_16 + 1, two_16 - 1, two_16 - 1);
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