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/*
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package compiler.c2.irTests;
import jdk.test.lib.Asserts;
import compiler.lib.ir_framework.*;
/*
* @test
* @bug 8267265 8272735
* @summary Test that Ideal transformations of SubLNode* are being performed as expected.
* @library /test/lib /
* @run driver compiler.c2.irTests.SubLNodeIdealizationTests
*/
public class SubLNodeIdealizationTests {
public static void main(String[] args) {
TestFramework.run();
}
@Run(test = {"test1", "test2", "test3",
"test4", "test5", "test6",
"test7", "test8", "test9",
"test10", "test11", "test12",
"test13", "test14", "test15",
"test16", "test17", "test18",
"test19", "test20", "test21"})
public void runMethod() {
long a = RunInfo.getRandom().nextLong();
long b = RunInfo.getRandom().nextLong();
long c = RunInfo.getRandom().nextLong();
long min = Long.MIN_VALUE;
long max = Long.MAX_VALUE;
assertResult(0, 0, 0);
assertResult(a, b, c);
assertResult(min, min, min);
assertResult(max, max, max);
}
@DontCompile
public void assertResult(long a, long b, long c) {
Asserts.assertEQ(a - 1 , test1(a));
Asserts.assertEQ((a + 1) - b , test2(a, b));
Asserts.assertEQ(a - (b + 2021) , test3(a, b));
Asserts.assertEQ(a - (a + b) , test4(a, b));
Asserts.assertEQ((a - b) - a , test5(a, b));
Asserts.assertEQ(a - (b + a) , test6(a, b));
Asserts.assertEQ(0 - (a - b) , test7(a, b));
Asserts.assertEQ(0 - (a + 2021) , test8(a, b));
Asserts.assertEQ((a + b) - (a + c), test9(a, b, c));
Asserts.assertEQ((b + a) - (c + a), test10(a, b, c));
Asserts.assertEQ((b + a) - (a + c), test11(a, b, c));
Asserts.assertEQ((a + b) - (c + a), test12(a, b, c));
Asserts.assertEQ(a - (b - c) , test13(a, b, c));
Asserts.assertEQ(0 - (a >> 63) , test14(a));
Asserts.assertEQ(0 - (0 - a) , test15(a));
Asserts.assertEQ((a + b) - b , test16(a, b));
Asserts.assertEQ((a + b) - a , test17(a, b));
Asserts.assertEQ(a*b - a*c , test18(a, b, c));
Asserts.assertEQ(a*b - b*c , test19(a, b, c));
Asserts.assertEQ(a*c - b*c , test20(a, b, c));
Asserts.assertEQ(a*b - c*a , test21(a, b, c));
}
@Test
@IR(failOn = {IRNode.SUB})
@IR(counts = {IRNode.ADD, "1"})
// Checks (x - c0) => x + (-c0)
public long test1(long x) {
return (x - 1);
}
@Test
@IR(counts = {IRNode.ADD, "1",
IRNode.SUB, "1"
})
// Checks (x + c0) - y => (x - y) + c0
public long test2(long x, long y) {
return (x + 1) - y;
}
@Test
@IR(counts = {IRNode.SUB, "1",
IRNode.ADD, "1"
})
// Checks x - (y + c0) => (x - y) + (-c0)
public long test3(long x, long y) {
return x - (y + 2021);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks x - (x + y) => 0 - y
public long test4(long x, long y) {
return x - (x + y);
}
@Test
@IR(counts = {IRNode.SUB, "1"})
// Checks (x - y) - x => 0 - y
public long test5(long x, long y) {
return (x - y) - x;
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks x - (y + x) => 0 - y
public long test6(long x, long y) {
return x - (y + x);
}
@Test
@IR(counts = {IRNode.SUB, "1"})
// Checks 0 - (x - y) => y - x
public long test7(long x, long y) {
return 0 - (x - y);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks 0 - (x + 2021) => -2021 - x
public long test8(long x, long y) {
return 0 - (x + 2021);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks (x + a) - (x + b) => a - b;
public long test9(long x, long a, long b) {
return (x + a) - (x + b);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks (a + x) - (b + x) => a - b
public long test10(long x, long a, long b) {
return (a + x) - (b + x);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks (a + x) - (x + b) => a - b
public long test11(long x, long a, long b) {
return (a + x) - (x + b);
}
@Test
@IR(failOn = {IRNode.ADD})
@IR(counts = {IRNode.SUB, "1"})
// Checks (x + a) - (b + x) => a - b
public long test12(long x, long a, long b) {
return (x + a) - (b + x);
}
@Test
@IR(counts = {IRNode.SUB, "1",
IRNode.ADD, "1"
})
// Checks a - (b - c) => (a + c) - b
public long test13(long a, long b, long c) {
return a - (b - c);
}
@Test
@IR(failOn = {IRNode.SUB, IRNode.RSHIFT_L})
@IR(counts = {IRNode.URSHIFT_L, "1"})
// Checks 0 - (a >> 63) => a >>> 63
// signed ^^ ^^^ unsigned
public long test14(long a) {
return 0 - (a >> 63);
}
@Test
@IR(failOn = {IRNode.SUB})
// Checks 0 - (0 - x) => x
public long test15(long x) {
return 0 - (0 - x);
}
@Test
@IR(failOn = {IRNode.SUB, IRNode.ADD})
// Checks (x + y) - y => x
public long test16(long x, long y) {
return (x + y) - y;
}
@Test
@IR(failOn = {IRNode.SUB, IRNode.ADD})
// Checks (x + y) - x => y
public long test17(long x, long y) {
return (x + y) - x;
}
@Test
@IR(counts = {IRNode.MUL, "1",
IRNode.SUB, "1"})
// Checks "a*b-a*c => a*(b-c)
public long test18(long a, long b, long c) {
return a*b - a*c;
}
@Test
@IR(counts = {IRNode.MUL, "1",
IRNode.SUB, "1"})
// Checks a*b-b*c => b*(a-c)
public long test19(long a, long b, long c) {
return a*b - b*c;
}
@Test
@IR(counts = {IRNode.MUL, "1",
IRNode.SUB, "1"})
// Checks a*c-b*c => (a-b)*c
public long test20(long a, long b, long c) {
return a*c - b*c;
}
@Test
@IR(counts = {IRNode.MUL, "1",
IRNode.SUB, "1"})
// Checks a*b-c*a => a*(b-c)
public long test21(long a, long b, long c) {
return a*b - c*a;
}
}
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