135 lines
4.3 KiB
Java
135 lines
4.3 KiB
Java
/*
|
|
* Copyright (c) 2023, 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 8297384 8303238
|
|
* @summary Test that Ideal transformations of LShiftINode* are being performed as expected.
|
|
* @library /test/lib /
|
|
* @run driver compiler.c2.irTests.LShiftINodeIdealizationTests
|
|
*/
|
|
public class LShiftINodeIdealizationTests {
|
|
public static void main(String[] args) {
|
|
TestFramework.run();
|
|
}
|
|
|
|
@Run(test = { "test1", "test2", "test3", "test4", "test5", "test6", "test7", "test8" })
|
|
public void runMethod() {
|
|
int a = RunInfo.getRandom().nextInt();
|
|
int b = RunInfo.getRandom().nextInt();
|
|
int c = RunInfo.getRandom().nextInt();
|
|
int d = RunInfo.getRandom().nextInt();
|
|
|
|
int min = Integer.MIN_VALUE;
|
|
int max = Integer.MAX_VALUE;
|
|
|
|
assertResult(0);
|
|
assertResult(a);
|
|
assertResult(b);
|
|
assertResult(c);
|
|
assertResult(d);
|
|
assertResult(min);
|
|
assertResult(max);
|
|
}
|
|
|
|
@DontCompile
|
|
public void assertResult(int a) {
|
|
Asserts.assertEQ((a >> 2022) << 2022, test1(a));
|
|
Asserts.assertEQ((a >>> 2022) << 2022, test2(a));
|
|
Asserts.assertEQ((a >> 4) << 8, test3(a));
|
|
Asserts.assertEQ((a >>> 4) << 8, test4(a));
|
|
Asserts.assertEQ((a >> 8) << 4, test5(a));
|
|
Asserts.assertEQ((a >>> 8) << 4, test6(a));
|
|
Asserts.assertEQ(((a >> 4) & 0xFF) << 8, test7(a));
|
|
Asserts.assertEQ(((a >>> 4) & 0xFF) << 8, test8(a));
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.LSHIFT, IRNode.RSHIFT })
|
|
@IR(counts = { IRNode.AND, "1" })
|
|
// Checks (x >> 2022) << 2022 => x & C where C = -(1 << 6)
|
|
public int test1(int x) {
|
|
return (x >> 2022) << 2022;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.LSHIFT, IRNode.URSHIFT })
|
|
@IR(counts = { IRNode.AND, "1" })
|
|
// Checks (x >>> 2022) << 2022 => x & C where C = -(1 << 6)
|
|
public int test2(int x) {
|
|
return (x >>> 2022) << 2022;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.RSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.LSHIFT, "1" })
|
|
// Checks (x >> 4) << 8 => (x << 4) & -16
|
|
public int test3(int x) {
|
|
return (x >> 4) << 8;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.URSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.LSHIFT, "1" })
|
|
// Checks (x >>> 4) << 8 => (x << 4) & -16
|
|
public int test4(int x) {
|
|
return (x >>> 4) << 8;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.LSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.RSHIFT, "1" })
|
|
// Checks (x >> 8) << 4 => (x >> 4) & -16
|
|
public int test5(int x) {
|
|
return (x >> 8) << 4;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.LSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.URSHIFT, "1" })
|
|
// Checks (x >>> 8) << 4 => (x >>> 4) & -16
|
|
public int test6(int x) {
|
|
return (x >>> 8) << 4;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.RSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.LSHIFT, "1" })
|
|
// Checks ((x >> 4) & 0xFF) << 8 => (x << 4) & 0xFF00
|
|
public int test7(int x) {
|
|
return ((x >> 4) & 0xFF) << 8;
|
|
}
|
|
|
|
@Test
|
|
@IR(failOn = { IRNode.URSHIFT })
|
|
@IR(counts = { IRNode.AND, "1", IRNode.LSHIFT, "1" })
|
|
// Checks ((x >>> 4) & 0xFF) << 8 => (x << 4) & 0xFF00
|
|
public int test8(int x) {
|
|
return ((x >>> 4) & 0xFF) << 8;
|
|
}
|
|
}
|