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704 lines
28 KiB
704 lines
28 KiB
// 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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const SMI_MAX = (1 << 29) - 1 + (1 << 29); // Create without overflowing.
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const SMI_MIN = -SMI_MAX - 1; // Create without overflowing.
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const ONE = 1;
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const ONE_HUNDRED = 100;
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const OBJ_42 = new (function() {
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this.valueOf = function() { return 42; };
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})();
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assertEquals(42, OBJ_42.valueOf());
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function Add1(x) {
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return x + 1;
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}
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function Add100(x) {
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return x + 100;
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}
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function Add1Reversed(x) {
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return 1 + x;
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}
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function Add100Reversed(x) {
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return 100 + x;
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}
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assertEquals(1, Add1(0)); // fast case
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assertEquals(1, Add1Reversed(0)); // fast case
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assertEquals(SMI_MAX + ONE, Add1(SMI_MAX), "smimax + 1");
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assertEquals(SMI_MAX + ONE, Add1Reversed(SMI_MAX), "1 + smimax");
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assertEquals(42 + ONE, Add1(OBJ_42)); // non-smi
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assertEquals(42 + ONE, Add1Reversed(OBJ_42)); // non-smi
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assertEquals(100, Add100(0)); // fast case
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assertEquals(100, Add100Reversed(0)); // fast case
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assertEquals(SMI_MAX + ONE_HUNDRED, Add100(SMI_MAX), "smimax + 100");
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assertEquals(SMI_MAX + ONE_HUNDRED, Add100Reversed(SMI_MAX), " 100 + smimax");
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assertEquals(42 + ONE_HUNDRED, Add100(OBJ_42)); // non-smi
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assertEquals(42 + ONE_HUNDRED, Add100Reversed(OBJ_42)); // non-smi
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function Sub1(x) {
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return x - 1;
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}
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function Sub100(x) {
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return x - 100;
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}
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function Sub1Reversed(x) {
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return 1 - x;
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}
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function Sub100Reversed(x) {
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return 100 - x;
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}
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assertEquals(0, Sub1(1)); // fast case
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assertEquals(-1, Sub1Reversed(2)); // fast case
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assertEquals(SMI_MIN - ONE, Sub1(SMI_MIN)); // overflow
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assertEquals(ONE - SMI_MIN, Sub1Reversed(SMI_MIN)); // overflow
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assertEquals(42 - ONE, Sub1(OBJ_42)); // non-smi
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assertEquals(ONE - 42, Sub1Reversed(OBJ_42)); // non-smi
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assertEquals(0, Sub100(100)); // fast case
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assertEquals(1, Sub100Reversed(99)); // fast case
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assertEquals(SMI_MIN - ONE_HUNDRED, Sub100(SMI_MIN)); // overflow
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assertEquals(ONE_HUNDRED - SMI_MIN, Sub100Reversed(SMI_MIN)); // overflow
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assertEquals(42 - ONE_HUNDRED, Sub100(OBJ_42)); // non-smi
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assertEquals(ONE_HUNDRED - 42, Sub100Reversed(OBJ_42)); // non-smi
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function Shr1(x) {
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return x >>> 1;
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}
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function Shr100(x) {
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return x >>> 100;
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}
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function Shr1Reversed(x) {
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return 1 >>> x;
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}
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function Shr100Reversed(x) {
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return 100 >>> x;
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}
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function Sar1(x) {
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return x >> 1;
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}
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function Sar100(x) {
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return x >> 100;
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}
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function Sar1Reversed(x) {
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return 1 >> x;
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}
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function Sar100Reversed(x) {
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return 100 >> x;
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}
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assertEquals(0, Shr1(1));
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assertEquals(0, Sar1(1));
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assertEquals(0, Shr1Reversed(2));
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assertEquals(0, Sar1Reversed(2));
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assertEquals(1610612736, Shr1(SMI_MIN));
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assertEquals(-536870912, Sar1(SMI_MIN));
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assertEquals(1, Shr1Reversed(SMI_MIN));
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assertEquals(1, Sar1Reversed(SMI_MIN));
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assertEquals(21, Shr1(OBJ_42));
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assertEquals(21, Sar1(OBJ_42));
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assertEquals(0, Shr1Reversed(OBJ_42));
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assertEquals(0, Sar1Reversed(OBJ_42));
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assertEquals(6, Shr100(100), "100 >>> 100");
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assertEquals(6, Sar100(100), "100 >> 100");
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assertEquals(12, Shr100Reversed(99));
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assertEquals(12, Sar100Reversed(99));
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assertEquals(201326592, Shr100(SMI_MIN));
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assertEquals(-67108864, Sar100(SMI_MIN));
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assertEquals(100, Shr100Reversed(SMI_MIN));
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assertEquals(100, Sar100Reversed(SMI_MIN));
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assertEquals(2, Shr100(OBJ_42));
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assertEquals(2, Sar100(OBJ_42));
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assertEquals(0, Shr100Reversed(OBJ_42));
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assertEquals(0, Sar100Reversed(OBJ_42));
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function Xor1(x) {
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return x ^ 1;
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}
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function Xor100(x) {
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return x ^ 100;
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}
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function Xor1Reversed(x) {
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return 1 ^ x;
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}
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function Xor100Reversed(x) {
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return 100 ^ x;
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}
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assertEquals(0, Xor1(1));
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assertEquals(3, Xor1Reversed(2));
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assertEquals(SMI_MIN + 1, Xor1(SMI_MIN));
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assertEquals(SMI_MIN + 1, Xor1Reversed(SMI_MIN));
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assertEquals(43, Xor1(OBJ_42));
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assertEquals(43, Xor1Reversed(OBJ_42));
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assertEquals(0, Xor100(100));
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assertEquals(7, Xor100Reversed(99));
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assertEquals(-1073741724, Xor100(SMI_MIN));
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assertEquals(-1073741724, Xor100Reversed(SMI_MIN));
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assertEquals(78, Xor100(OBJ_42));
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assertEquals(78, Xor100Reversed(OBJ_42));
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var x = 0x23; var y = 0x35;
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assertEquals(0x16, x ^ y);
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// Bitwise not.
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var v = 0;
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assertEquals(-1, ~v);
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v = SMI_MIN;
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assertEquals(0x3fffffff, ~v, "~smimin");
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v = SMI_MAX;
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assertEquals(-0x40000000, ~v, "~smimax");
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// Overflowing ++ and --.
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v = SMI_MAX;
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v++;
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assertEquals(0x40000000, v, "smimax++");
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v = SMI_MIN;
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v--;
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assertEquals(-0x40000001, v, "smimin--");
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// Check that comparisons of numbers separated by MIN_SMI work.
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assertFalse(SMI_MIN > 0);
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assertFalse(SMI_MIN + 1 > 1);
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assertFalse(SMI_MIN + 1 > 2);
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assertFalse(SMI_MIN + 2 > 1);
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assertFalse(0 < SMI_MIN);
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assertTrue(-1 < SMI_MAX);
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assertFalse(SMI_MAX < -1);
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// Not actually Smi operations.
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// Check that relations on unary ops work.
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var v = -1.2;
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assertTrue(v == v);
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assertTrue(v === v);
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assertTrue(v <= v);
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assertTrue(v >= v);
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assertFalse(v < v);
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assertFalse(v > v);
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assertFalse(v != v);
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assertFalse(v !== v);
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// Right hand side of unary minus is overwritable.
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v = 1.5
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assertEquals(-2.25, -(v * v));
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// Smi input to bitop gives non-smi result where the rhs is a float that
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// can be overwritten.
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var x1 = 0x10000000;
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var x2 = 0x40000002;
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var x3 = 0x40000000;
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assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<1(1)");
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// Smi input to bitop gives non-smi result where the rhs could be overwritten
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// if it were a float, but it isn't.
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x1 = 0x10000000
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x2 = 4
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x3 = 2
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assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<2(2)");
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// Test shift operators on non-smi inputs, giving smi and non-smi results.
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function testShiftNonSmis() {
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var pos_non_smi = 2000000000;
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var neg_non_smi = -pos_non_smi;
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var pos_smi = 1000000000;
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var neg_smi = -pos_smi;
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// Begin block A
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assertEquals(pos_non_smi, (pos_non_smi) >> 0);
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assertEquals(pos_non_smi, (pos_non_smi) >>> 0);
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assertEquals(pos_non_smi, (pos_non_smi) << 0);
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assertEquals(neg_non_smi, (neg_non_smi) >> 0);
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assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> 0);
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assertEquals(neg_non_smi, (neg_non_smi) << 0);
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assertEquals(pos_smi, (pos_smi) >> 0, "possmi >> 0");
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assertEquals(pos_smi, (pos_smi) >>> 0, "possmi >>>0");
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assertEquals(pos_smi, (pos_smi) << 0, "possmi << 0");
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assertEquals(neg_smi, (neg_smi) >> 0, "negsmi >> 0");
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assertEquals(neg_smi + 0x100000000, (neg_smi) >>> 0, "negsmi >>> 0");
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assertEquals(neg_smi, (neg_smi) << 0), "negsmi << 0";
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assertEquals(pos_non_smi / 2, (pos_non_smi) >> 1);
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assertEquals(pos_non_smi / 2, (pos_non_smi) >>> 1);
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assertEquals(-0x1194D800, (pos_non_smi) << 1);
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assertEquals(pos_non_smi / 8, (pos_non_smi) >> 3);
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assertEquals(pos_non_smi / 8, (pos_non_smi) >>> 3);
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assertEquals(-0x46536000, (pos_non_smi) << 3);
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assertEquals(0x73594000, (pos_non_smi) << 4);
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assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> 0);
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assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> 0);
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assertEquals(pos_non_smi, (pos_non_smi + 0.5) << 0);
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assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> 1);
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assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> 1);
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assertEquals(-0x1194D800, (pos_non_smi + 0.5) << 1);
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assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> 3);
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assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> 3);
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assertEquals(-0x46536000, (pos_non_smi + 0.5) << 3);
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assertEquals(0x73594000, (pos_non_smi + 0.5) << 4);
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assertEquals(neg_non_smi / 2, (neg_non_smi) >> 1, "negnonsmi >> 1");
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assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> 1,
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"negnonsmi >>> 1");
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assertEquals(0x1194D800, (neg_non_smi) << 1);
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assertEquals(neg_non_smi / 8, (neg_non_smi) >> 3);
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assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> 3);
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assertEquals(0x46536000, (neg_non_smi) << 3);
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assertEquals(-0x73594000, (neg_non_smi) << 4);
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assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> 0);
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assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> 0,
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"negnonsmi.5 >>> 0");
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assertEquals(neg_non_smi, (neg_non_smi - 0.5) << 0);
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assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> 1);
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assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> 1,
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"negnonsmi.5 >>> 1");
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assertEquals(0x1194D800, (neg_non_smi - 0.5) << 1);
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assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> 3);
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assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5) >>> 3);
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assertEquals(0x46536000, (neg_non_smi - 0.5) << 3);
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assertEquals(-0x73594000, (neg_non_smi - 0.5) << 4);
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assertEquals(pos_smi / 2, (pos_smi) >> 1);
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assertEquals(pos_smi / 2, (pos_smi) >>> 1);
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assertEquals(pos_non_smi, (pos_smi) << 1);
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assertEquals(pos_smi / 8, (pos_smi) >> 3);
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assertEquals(pos_smi / 8, (pos_smi) >>> 3);
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assertEquals(-0x2329b000, (pos_smi) << 3);
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assertEquals(0x73594000, (pos_smi) << 5);
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assertEquals(pos_smi, (pos_smi + 0.5) >> 0, "possmi.5 >> 0");
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assertEquals(pos_smi, (pos_smi + 0.5) >>> 0, "possmi.5 >>> 0");
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assertEquals(pos_smi, (pos_smi + 0.5) << 0, "possmi.5 << 0");
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assertEquals(pos_smi / 2, (pos_smi + 0.5) >> 1);
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assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> 1);
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assertEquals(pos_non_smi, (pos_smi + 0.5) << 1);
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assertEquals(pos_smi / 8, (pos_smi + 0.5) >> 3);
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assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> 3);
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assertEquals(-0x2329b000, (pos_smi + 0.5) << 3);
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assertEquals(0x73594000, (pos_smi + 0.5) << 5);
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assertEquals(neg_smi / 2, (neg_smi) >> 1);
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assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> 1);
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assertEquals(neg_non_smi, (neg_smi) << 1);
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assertEquals(neg_smi / 8, (neg_smi) >> 3);
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assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> 3);
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assertEquals(0x46536000, (neg_smi) << 4);
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assertEquals(-0x73594000, (neg_smi) << 5);
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assertEquals(neg_smi, (neg_smi - 0.5) >> 0, "negsmi.5 >> 0");
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assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> 0, "negsmi.5 >>> 0");
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assertEquals(neg_smi, (neg_smi - 0.5) << 0, "negsmi.5 << 0");
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assertEquals(neg_smi / 2, (neg_smi - 0.5) >> 1);
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assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> 1);
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assertEquals(neg_non_smi, (neg_smi - 0.5) << 1);
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assertEquals(neg_smi / 8, (neg_smi - 0.5) >> 3);
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assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> 3);
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assertEquals(0x46536000, (neg_smi - 0.5) << 4);
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assertEquals(-0x73594000, (neg_smi - 0.5) << 5);
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// End block A
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// Repeat block A with 2^32 added to positive numbers and
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// 2^32 subtracted from negative numbers.
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// Begin block A repeat 1
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var two_32 = 0x100000000;
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var neg_32 = -two_32;
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assertEquals(pos_non_smi, (two_32 + pos_non_smi) >> 0);
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assertEquals(pos_non_smi, (two_32 + pos_non_smi) >>> 0);
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assertEquals(pos_non_smi, (two_32 + pos_non_smi) << 0);
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assertEquals(neg_non_smi, (neg_32 + neg_non_smi) >> 0);
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assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi) >>> 0);
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assertEquals(neg_non_smi, (neg_32 + neg_non_smi) << 0);
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assertEquals(pos_smi, (two_32 + pos_smi) >> 0, "2^32+possmi >> 0");
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assertEquals(pos_smi, (two_32 + pos_smi) >>> 0, "2^32+possmi >>> 0");
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assertEquals(pos_smi, (two_32 + pos_smi) << 0, "2^32+possmi << 0");
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assertEquals(neg_smi, (neg_32 + neg_smi) >> 0, "2^32+negsmi >> 0");
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assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi) >>> 0);
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assertEquals(neg_smi, (neg_32 + neg_smi) << 0, "2^32+negsmi << 0");
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assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >> 1);
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assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >>> 1);
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assertEquals(-0x1194D800, (two_32 + pos_non_smi) << 1);
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assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >> 3);
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assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >>> 3);
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assertEquals(-0x46536000, (two_32 + pos_non_smi) << 3);
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assertEquals(0x73594000, (two_32 + pos_non_smi) << 4);
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assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >> 0);
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assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >>> 0);
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assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) << 0);
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assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >> 1);
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assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >>> 1);
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assertEquals(-0x1194D800, (two_32 + pos_non_smi + 0.5) << 1);
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assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >> 3);
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assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >>> 3);
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assertEquals(-0x46536000, (two_32 + pos_non_smi + 0.5) << 3);
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assertEquals(0x73594000, (two_32 + pos_non_smi + 0.5) << 4);
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assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi) >> 1);
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assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi) >>> 1);
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assertEquals(0x1194D800, (neg_32 + neg_non_smi) << 1);
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assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi) >> 3);
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assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi) >>> 3);
|
|
assertEquals(0x46536000, (neg_32 + neg_non_smi) << 3);
|
|
assertEquals(-0x73594000, (neg_32 + neg_non_smi) << 4);
|
|
assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) >> 0);
|
|
assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi - 0.5) >>> 0);
|
|
assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) << 0);
|
|
assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi - 0.5) >> 1);
|
|
assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi - 0.5)
|
|
>>> 1);
|
|
assertEquals(0x1194D800, (neg_32 + neg_non_smi - 0.5) << 1);
|
|
assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi - 0.5) >> 3);
|
|
assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi - 0.5)
|
|
>>> 3);
|
|
assertEquals(0x46536000, (neg_32 + neg_non_smi - 0.5) << 3);
|
|
assertEquals(-0x73594000, (neg_32 + neg_non_smi - 0.5) << 4);
|
|
|
|
assertEquals(pos_smi / 2, (two_32 + pos_smi) >> 1);
|
|
assertEquals(pos_smi / 2, (two_32 + pos_smi) >>> 1);
|
|
assertEquals(pos_non_smi, (two_32 + pos_smi) << 1);
|
|
assertEquals(pos_smi / 8, (two_32 + pos_smi) >> 3);
|
|
assertEquals(pos_smi / 8, (two_32 + pos_smi) >>> 3);
|
|
assertEquals(-0x2329b000, (two_32 + pos_smi) << 3);
|
|
assertEquals(0x73594000, (two_32 + pos_smi) << 5);
|
|
assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >> 0);
|
|
assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >>> 0);
|
|
assertEquals(pos_smi, (two_32 + pos_smi + 0.5) << 0);
|
|
assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >> 1);
|
|
assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >>> 1);
|
|
assertEquals(pos_non_smi, (two_32 + pos_smi + 0.5) << 1);
|
|
assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >> 3);
|
|
assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >>> 3);
|
|
assertEquals(-0x2329b000, (two_32 + pos_smi + 0.5) << 3);
|
|
assertEquals(0x73594000, (two_32 + pos_smi + 0.5) << 5);
|
|
|
|
assertEquals(neg_smi / 2, (neg_32 + neg_smi) >> 1);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi) >>> 1);
|
|
assertEquals(neg_non_smi, (neg_32 + neg_smi) << 1);
|
|
assertEquals(neg_smi / 8, (neg_32 + neg_smi) >> 3);
|
|
assertEquals((neg_smi + 0x100000000) / 8, (neg_32 + neg_smi) >>> 3);
|
|
assertEquals(0x46536000, (neg_32 + neg_smi) << 4);
|
|
assertEquals(-0x73594000, (neg_32 + neg_smi) << 5);
|
|
assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) >> 0, "-2^32+negsmi.5 >> 0");
|
|
assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi - 0.5) >>> 0);
|
|
assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) << 0, "-2^32+negsmi.5 << 0");
|
|
assertEquals(neg_smi / 2, (neg_32 + neg_smi - 0.5) >> 1);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi - 0.5) >>> 1);
|
|
assertEquals(neg_non_smi, (neg_32 + neg_smi - 0.5) << 1);
|
|
assertEquals(neg_smi / 8, (neg_32 + neg_smi - 0.5) >> 3);
|
|
assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_32 + neg_smi - 0.5) >>> 3);
|
|
assertEquals(0x46536000, (neg_32 + neg_smi - 0.5) << 4);
|
|
assertEquals(-0x73594000, (neg_32 + neg_smi - 0.5) << 5);
|
|
// End block A repeat 1
|
|
// Repeat block A with shift amounts in variables intialized with
|
|
// a constant.
|
|
var zero = 0;
|
|
var one = 1;
|
|
var three = 3;
|
|
var four = 4;
|
|
var five = 5;
|
|
// Begin block A repeat 2
|
|
assertEquals(pos_non_smi, (pos_non_smi) >> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi) >>> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi) << zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi) >> zero);
|
|
assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi) << zero);
|
|
assertEquals(pos_smi, (pos_smi) >> zero);
|
|
assertEquals(pos_smi, (pos_smi) >>> zero);
|
|
assertEquals(pos_smi, (pos_smi) << zero);
|
|
assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero");
|
|
assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero);
|
|
assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero");
|
|
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi) >> one);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one);
|
|
assertEquals(-0x1194D800, (pos_non_smi) << one);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi) >> three);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three);
|
|
assertEquals(-0x46536000, (pos_non_smi) << three);
|
|
assertEquals(0x73594000, (pos_non_smi) << four);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one);
|
|
assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three);
|
|
assertEquals(-0x46536000, (pos_non_smi + 0.5) << three);
|
|
assertEquals(0x73594000, (pos_non_smi + 0.5) << four);
|
|
|
|
assertEquals(neg_non_smi / 2, (neg_non_smi) >> one);
|
|
assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one);
|
|
assertEquals(0x1194D800, (neg_non_smi) << one);
|
|
assertEquals(neg_non_smi / 8, (neg_non_smi) >> three);
|
|
assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three);
|
|
assertEquals(0x46536000, (neg_non_smi) << three);
|
|
assertEquals(-0x73594000, (neg_non_smi) << four);
|
|
assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero);
|
|
assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero);
|
|
assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one);
|
|
assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one);
|
|
assertEquals(0x1194D800, (neg_non_smi - 0.5) << one);
|
|
assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three);
|
|
assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5)
|
|
>>> three);
|
|
assertEquals(0x46536000, (neg_non_smi - 0.5) << three);
|
|
assertEquals(-0x73594000, (neg_non_smi - 0.5) << four);
|
|
|
|
assertEquals(pos_smi / 2, (pos_smi) >> one);
|
|
assertEquals(pos_smi / 2, (pos_smi) >>> one);
|
|
assertEquals(pos_non_smi, (pos_smi) << one);
|
|
assertEquals(pos_smi / 8, (pos_smi) >> three);
|
|
assertEquals(pos_smi / 8, (pos_smi) >>> three);
|
|
assertEquals(-0x2329b000, (pos_smi) << three);
|
|
assertEquals(0x73594000, (pos_smi) << five);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) >> zero);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) >>> zero);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) << zero);
|
|
assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one);
|
|
assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one);
|
|
assertEquals(pos_non_smi, (pos_smi + 0.5) << one);
|
|
assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three);
|
|
assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three);
|
|
assertEquals(-0x2329b000, (pos_smi + 0.5) << three);
|
|
assertEquals(0x73594000, (pos_smi + 0.5) << five);
|
|
|
|
assertEquals(neg_smi / 2, (neg_smi) >> one);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one);
|
|
assertEquals(neg_non_smi, (neg_smi) << one);
|
|
assertEquals(neg_smi / 8, (neg_smi) >> three);
|
|
assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three);
|
|
assertEquals(0x46536000, (neg_smi) << four);
|
|
assertEquals(-0x73594000, (neg_smi) << five);
|
|
assertEquals(neg_smi, (neg_smi - 0.5) >> zero);
|
|
assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero);
|
|
assertEquals(neg_smi, (neg_smi - 0.5) << zero);
|
|
assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one);
|
|
assertEquals(neg_non_smi, (neg_smi - 0.5) << one);
|
|
assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three);
|
|
assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three);
|
|
assertEquals(0x46536000, (neg_smi - 0.5) << four);
|
|
assertEquals(-0x73594000, (neg_smi - 0.5) << five);
|
|
// End block A repeat 2
|
|
|
|
// Repeat previous block, with computed values in the shift variables.
|
|
five = 0;
|
|
while (five < 5 ) ++five;
|
|
four = five - one;
|
|
three = four - one;
|
|
one = four - three;
|
|
zero = one - one;
|
|
|
|
// Begin block A repeat 3
|
|
assertEquals(pos_non_smi, (pos_non_smi) >> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi) >>> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi) << zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi) >> zero);
|
|
assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi) << zero);
|
|
assertEquals(pos_smi, (pos_smi) >> zero);
|
|
assertEquals(pos_smi, (pos_smi) >>> zero);
|
|
assertEquals(pos_smi, (pos_smi) << zero);
|
|
assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero(2)");
|
|
assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero);
|
|
assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero(2)");
|
|
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi) >> one);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one);
|
|
assertEquals(-0x1194D800, (pos_non_smi) << one);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi) >> three);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three);
|
|
assertEquals(-0x46536000, (pos_non_smi) << three);
|
|
assertEquals(0x73594000, (pos_non_smi) << four);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero);
|
|
assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one);
|
|
assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one);
|
|
assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three);
|
|
assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three);
|
|
assertEquals(-0x46536000, (pos_non_smi + 0.5) << three);
|
|
assertEquals(0x73594000, (pos_non_smi + 0.5) << four);
|
|
|
|
assertEquals(neg_non_smi / 2, (neg_non_smi) >> one);
|
|
assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one);
|
|
assertEquals(0x1194D800, (neg_non_smi) << one);
|
|
assertEquals(neg_non_smi / 8, (neg_non_smi) >> three);
|
|
assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three);
|
|
assertEquals(0x46536000, (neg_non_smi) << three);
|
|
assertEquals(-0x73594000, (neg_non_smi) << four);
|
|
assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero);
|
|
assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero);
|
|
assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero);
|
|
assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one);
|
|
assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one);
|
|
assertEquals(0x1194D800, (neg_non_smi - 0.5) << one);
|
|
assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three);
|
|
assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5)
|
|
>>> three);
|
|
assertEquals(0x46536000, (neg_non_smi - 0.5) << three);
|
|
assertEquals(-0x73594000, (neg_non_smi - 0.5) << four);
|
|
|
|
assertEquals(pos_smi / 2, (pos_smi) >> one);
|
|
assertEquals(pos_smi / 2, (pos_smi) >>> one);
|
|
assertEquals(pos_non_smi, (pos_smi) << one);
|
|
assertEquals(pos_smi / 8, (pos_smi) >> three);
|
|
assertEquals(pos_smi / 8, (pos_smi) >>> three);
|
|
assertEquals(-0x2329b000, (pos_smi) << three);
|
|
assertEquals(0x73594000, (pos_smi) << five);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) >> zero);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) >>> zero);
|
|
assertEquals(pos_smi, (pos_smi + 0.5) << zero);
|
|
assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one);
|
|
assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one);
|
|
assertEquals(pos_non_smi, (pos_smi + 0.5) << one);
|
|
assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three);
|
|
assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three);
|
|
assertEquals(-0x2329b000, (pos_smi + 0.5) << three);
|
|
assertEquals(0x73594000, (pos_smi + 0.5) << five);
|
|
|
|
assertEquals(neg_smi / 2, (neg_smi) >> one);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one);
|
|
assertEquals(neg_non_smi, (neg_smi) << one);
|
|
assertEquals(neg_smi / 8, (neg_smi) >> three);
|
|
assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three);
|
|
assertEquals(0x46536000, (neg_smi) << four);
|
|
assertEquals(-0x73594000, (neg_smi) << five);
|
|
assertEquals(neg_smi, (neg_smi - 0.5) >> zero, "negsmi.5 >> zero");
|
|
assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero);
|
|
assertEquals(neg_smi, (neg_smi - 0.5) << zero, "negsmi.5 << zero");
|
|
assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one);
|
|
assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one);
|
|
assertEquals(neg_non_smi, (neg_smi - 0.5) << one);
|
|
assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three);
|
|
assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three);
|
|
assertEquals(0x46536000, (neg_smi - 0.5) << four);
|
|
assertEquals(-0x73594000, (neg_smi - 0.5) << five);
|
|
// End block A repeat 3
|
|
|
|
// Test non-integer shift value
|
|
assertEquals(5, 20.5 >> 2.4);
|
|
assertEquals(5, 20.5 >> 2.7);
|
|
var shift = 2.4;
|
|
assertEquals(5, 20.5 >> shift);
|
|
assertEquals(5, 20.5 >> shift + 0.3);
|
|
shift = shift + zero;
|
|
assertEquals(5, 20.5 >> shift);
|
|
assertEquals(5, 20.5 >> shift + 0.3);
|
|
}
|
|
|
|
testShiftNonSmis();
|
|
|
|
function intConversion() {
|
|
function foo(x) {
|
|
assertEquals(x, (x * 1.0000000001) | 0, "foo more " + x);
|
|
assertEquals(x, x | 0, "foo " + x);
|
|
if (x > 0) {
|
|
assertEquals(x - 1, (x * 0.9999999999) | 0, "foo less " + x);
|
|
} else {
|
|
assertEquals(x + 1, (x * 0.9999999999) | 0, "foo less " + x);
|
|
}
|
|
}
|
|
for (var i = 1; i < 0x80000000; i *= 2) {
|
|
foo(i);
|
|
foo(-i);
|
|
}
|
|
for (var i = 1; i < 1/0; i *= 2) {
|
|
assertEquals(i | 0, (i * 1.0000000000000001) | 0, "b" + i);
|
|
assertEquals(-i | 0, (i * -1.0000000000000001) | 0, "c" + i);
|
|
}
|
|
for (var i = 0.5; i > 0; i /= 2) {
|
|
assertEquals(0, i | 0, "d" + i);
|
|
assertEquals(0, -i | 0, "e" + i);
|
|
}
|
|
}
|
|
|
|
intConversion();
|
|
|
|
// Verify that we handle the (optimized) corner case of shifting by
|
|
// zero even for non-smis.
|
|
function shiftByZero(n) { return n << 0; }
|
|
|
|
assertEquals(3, shiftByZero(3.1415));
|
|
|
|
// Verify that the static type information of x >>> 32 is computed correctly.
|
|
function LogicalShiftRightByMultipleOf32(x) {
|
|
x = x >>> 32;
|
|
return x + x;
|
|
}
|
|
|
|
assertEquals(4589934592, LogicalShiftRightByMultipleOf32(-2000000000));
|
|
assertEquals(4589934592, LogicalShiftRightByMultipleOf32(-2000000000));
|
|
|
|
// Verify that the shift amount is reduced modulo 32, not modulo 64.
|
|
function LeftShiftThreeBy(x) {return 3 << x;}
|
|
assertEquals(24, LeftShiftThreeBy(3));
|
|
assertEquals(24, LeftShiftThreeBy(35));
|
|
assertEquals(24, LeftShiftThreeBy(67));
|
|
assertEquals(24, LeftShiftThreeBy(-29));
|
|
|
|
// Regression test for a bug in the ARM code generator. For some register
|
|
// allocations we got the Smi overflow case wrong.
|
|
function f(x, y) { return y + ( 1 << (x & 31)); }
|
|
assertEquals(-2147483647, f(31, 1));
|
|
|
|
// Regression test for correct handling of overflow in smi comparison.
|
|
assertTrue(-0x40000000 < 42);
|
|
|