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/*
* Copyright (c) 2021, 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.
*/
/*
* @test
* @bug 8277882
* @summary New subnode ideal optimization: converting "c0 - (x + c1)" into "(c0 - c1) - x"
* @library /test/lib
* @run main/othervm -XX:-TieredCompilation -Xbatch
* -XX:CompileCommand=dontinline,compiler.c2.TestSubIdealC0Minus_YPlusC1_::test*
* -XX:CompileCommand=compileonly,compiler.c2.TestSubIdealC0Minus_YPlusC1_::test*
* compiler.c2.TestSubIdealC0Minus_YPlusC1_
*/
package compiler.c2;
import jdk.test.lib.Asserts;
public class TestSubIdealC0Minus_YPlusC1_ {
private static final int I_C0_0 = 1234;
private static final int I_C1 = 1234;
private static final int I_C0_1 = 4321;
private static final long L_C0_0 = 123_456_789_123L;
private static final long L_C1 = 123_456_789_123L;
private static final long L_C0_1 = 654_321;
public static int testIC0EqualsC1(int x) {
return I_C0_0 - (x + I_C1);
}
public static long testLC0EqualsC1(long x) {
return L_C0_0 - (x + L_C1);
}
public static int testIC0NotEqualsC1(int x) {
return I_C0_1 - (x + I_C1);
}
public static long testLC0NotEqualsC1(long x) {
return L_C0_1 - (x + L_C1);
}
public static int testIXPlusC1IsOverflow(int x) {
return Integer.MAX_VALUE - (x + Integer.MAX_VALUE);
}
public static long testLXPlusC1IsOverflow(long x) {
return Long.MAX_VALUE - (x + Long.MAX_VALUE);
}
public static int testIXPlusC1IsUnderflow(int x) {
return Integer.MIN_VALUE - (x + Integer.MIN_VALUE);
}
public static long testLXPlusC1IsUnderflow(long x) {
return Long.MIN_VALUE - (x + Long.MIN_VALUE);
}
public static int testIC0MinusC1IsOverflow(int x) {
return Integer.MAX_VALUE - (x + Integer.MIN_VALUE);
}
public static long testLC0MinusC1IsOverflow(long x) {
return Long.MAX_VALUE - (x + Long.MIN_VALUE);
}
public static int testIC0MinusC1IsUnderflow(int x) {
return Integer.MIN_VALUE - (x + Integer.MAX_VALUE);
}
public static long testLC0MinusC1IsUnderflow(long x) {
return Long.MIN_VALUE - (x + Long.MAX_VALUE);
}
public static int testIResultIsOverflow(int x) {
return 2147483637 - (x + 10); // Integer.MAX_VALUE == 2147483647
}
public static long testLResultIsOverflow(long x) {
return 9223372036854775797L - (x + 10); // Long.MAX_VALUE == 9223372036854775807
}
public static int testIResultIsUnderflow(int x) {
return -2147483637 - (x + 10); // Integer.MIN_VALUE == -2147483648
}
public static long testLResultIsUnderflow(long x) {
return -9223372036854775797L - (x + 10); // Long.MIN_VALUE == -9223372036854775808
}
public static void main(String... args) {
for (int i = 0; i < 50_000; i++) {
Asserts.assertTrue(testIC0EqualsC1(10) == -10);
Asserts.assertTrue(testIC0NotEqualsC1(100) == 2987);
Asserts.assertTrue(testIXPlusC1IsOverflow(10) == -10);
Asserts.assertTrue(testIXPlusC1IsUnderflow(-10) == 10);
Asserts.assertTrue(testIC0MinusC1IsOverflow(10) == -11);
Asserts.assertTrue(testIC0MinusC1IsUnderflow(10) == -9);
Asserts.assertTrue(testIResultIsOverflow(-21) == Integer.MIN_VALUE);
Asserts.assertTrue(testIResultIsUnderflow(2) == Integer.MAX_VALUE);
Asserts.assertTrue(testLC0EqualsC1(10) == -10);
Asserts.assertTrue(testLC0NotEqualsC1(100) == -123456134902L);
Asserts.assertTrue(testLXPlusC1IsOverflow(10) == -10);
Asserts.assertTrue(testLXPlusC1IsUnderflow(-10) == 10);
Asserts.assertTrue(testLC0MinusC1IsOverflow(10) == -11);
Asserts.assertTrue(testLC0MinusC1IsUnderflow(10) == -9);
Asserts.assertTrue(testLResultIsOverflow(-21) == Long.MIN_VALUE);
Asserts.assertTrue(testLResultIsUnderflow(2) == Long.MAX_VALUE);
}
}
}
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