221 lines
6.7 KiB
Java
221 lines
6.7 KiB
Java
/*
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* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.c2.irTests;
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import jdk.test.lib.Asserts;
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import compiler.lib.ir_framework.*;
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/*
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* @test
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* @bug 8281453
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* @summary Convert ~x into -1-x when ~x is used in an arithmetic expression
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* @library /test/lib /
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* @run driver compiler.c2.irTests.XorLNodeIdealizationTests
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*/
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public class XorLNodeIdealizationTests {
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public static void main(String[] args) {
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TestFramework.run();
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}
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@Run(test = {"test1", "test2", "test3",
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"test4", "test5", "test6",
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"test7", "test8", "test9",
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"test10", "test11", "test12",
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"test13", "test14", "test15",
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"test16", "test17"})
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public void runMethod() {
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long a = RunInfo.getRandom().nextLong();
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long b = RunInfo.getRandom().nextLong();
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long c = RunInfo.getRandom().nextLong();
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long d = RunInfo.getRandom().nextLong();
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long min = Long.MIN_VALUE;
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long max = Long.MAX_VALUE;
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assertResult(0, 0, 0, 0);
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assertResult(a, b, c, d);
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assertResult(min, min, min, min);
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assertResult(max, max, max, max);
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}
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@DontCompile
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public void assertResult(long a, long b, long c, long d) {
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Asserts.assertEQ(b - a , test1(a, b));
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Asserts.assertEQ(a - b , test2(a, b));
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Asserts.assertEQ(b - a , test3(a, b));
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Asserts.assertEQ(a - b , test4(a, b));
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Asserts.assertEQ(b - a , test5(a, b));
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Asserts.assertEQ(a + 1 , test6(a));
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Asserts.assertEQ(a , test7(a));
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Asserts.assertEQ((b + a) + 1 , test8(a, b));
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Asserts.assertEQ((-1 - a) - b , test9(a, b));
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Asserts.assertEQ((b - a) + (-1) , test10(a, b));
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Asserts.assertEQ((b - a) + (-1) , test11(a, b));
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Asserts.assertEQ(~a , test12(a));
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Asserts.assertEQ(~a , test13(a));
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Asserts.assertEQ(~a , test14(a));
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Asserts.assertEQ(~a , test15(a));
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Asserts.assertEQ((~a + b) + (~a | c), test16(a, b, c));
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Asserts.assertEQ(-2023 - a , test17(a));
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}
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@Test
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@IR(failOn = {IRNode.XOR, IRNode.ADD})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks (~x + y) + 1 => y - x
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public long test1(long x, long y) {
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return (~x + y) + 1;
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}
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@Test
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@IR(failOn = {IRNode.XOR, IRNode.ADD})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks (x + ~y) + 1 => x - y
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public long test2(long x, long y) {
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return (x + ~y) + 1;
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}
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@Test
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@IR(failOn = {IRNode.XOR, IRNode.ADD})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks ~x + (y + 1) => y - x
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public long test3(long x, long y) {
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return ~x + (y + 1);
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}
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@Test
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@IR(failOn = {IRNode.XOR, IRNode.ADD})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks (x + 1) + ~y => x - y
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public long test4(long x, long y) {
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return (x + 1) + ~y;
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}
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@Test
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@IR(failOn = {IRNode.XOR})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks ~x - ~y => y - x
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public long test5(long x, long y) {
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return ~x - ~y; // transformed to y - x
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.XOR})
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@IR(counts = {IRNode.ADD, "1"})
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// Checks 0 - ~x => x + 1
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public long test6(long x) {
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return 0 - ~x; // transformed to x + 1
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.XOR, IRNode.ADD})
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// Checks -1 - ~x => x
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public long test7(long x) {
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return -1 - ~x;
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.XOR})
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@IR(counts = {IRNode.ADD, "2"})
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// Checks y - ~x => (y + x) + 1
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public long test8(long x, long y) {
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return y - ~x;
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}
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@Test
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@IR(failOn = {IRNode.ADD, IRNode.XOR})
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@IR(counts = {IRNode.SUB, "2"})
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// Checks ~x - y => (-1 - x) -y
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public long test9(long x, long y) {
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return ~x - y;
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}
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@Test
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@IR(failOn = {IRNode.XOR})
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@IR(counts = {IRNode.SUB, "1",
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IRNode.ADD, "1"})
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// Checks ~x + y => (y - x) + (-1)
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public long test10(long x, long y) {
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return ~x + y;
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}
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@Test
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@IR(failOn = {IRNode.XOR})
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@IR(counts = {IRNode.SUB, "1",
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IRNode.ADD, "1"})
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// Checks y + ~x => (y - x) + (-1)
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public long test11(long x, long y) {
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return y + ~x;
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.ADD})
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@IR(counts = {IRNode.XOR, "1"})
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// Checks ~(x + 0) => ~x, should not be transformed into -1-x
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public long test12(long x) {
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return ~(x + 0);
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.ADD})
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@IR(counts = {IRNode.XOR, "1"})
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// Checks ~(x - 0) => ~x, should not be transformed into -1-x
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public long test13(long x) {
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return ~(x - 0);
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.ADD})
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@IR(counts = {IRNode.XOR, "1"})
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// Checks ~x + 0 => ~x, should not be transformed into -1-x
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public long test14(long x) {
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return ~x + 0;
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}
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@Test
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@IR(failOn = {IRNode.SUB, IRNode.ADD})
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@IR(counts = {IRNode.XOR, "1"})
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// Checks ~x - 0 => ~x, should not be transformed into -1-x
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public long test15(long x) {
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return ~x - 0;
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}
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@Test
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@IR(counts = {IRNode.XOR, "1"})
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// Checks ~x + y should NOT be transformed into (y - x) + (-1)
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// because ~x has one non-arithmetic user.
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public long test16(long x, long y, long z) {
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long u = ~x + y;
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long v = ~x | z;
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return u + v;
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}
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@Test
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@IR(failOn = {IRNode.XOR, IRNode.ADD})
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@IR(counts = {IRNode.SUB, "1"})
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// Checks ~(x + c) => (-c-1) - x
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public long test17(long x) {
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return ~(x + 2022);
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}
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}
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