259 lines
9.1 KiB
Java
259 lines
9.1 KiB
Java
/*
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* Copyright (c) 2024, Intel Corporation. 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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/*
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* @test
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* @bug 8320448
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* @summary test String indexOf() intrinsic
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* @run driver IndexOf
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*/
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/*
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* @test
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* @bug 8320448
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* @summary test String indexOf() intrinsic
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* @requires vm.cpu.features ~= ".*avx2.*"
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* @requires vm.compiler2.enabled
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xcomp -XX:-TieredCompilation -XX:UseAVX=2 -XX:+UnlockDiagnosticVMOptions -XX:+EnableX86ECoreOpts -XX:-CheckJNICalls IndexOf
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*/
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public class IndexOf {
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final int scope = 32*2+16+8;
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final char a, aa, b, c, d;
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enum Encoding {LL, UU, UL; }
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final Encoding ae;
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int failures;
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IndexOf(Encoding _ae) {
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failures = 0;
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ae = _ae;
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switch (ae) {
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case LL:
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a = 'a';
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aa = a;
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b = 'b';
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c = 'c';
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d = 'd';
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break;
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case UU:
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a = '\u0061';
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aa = a;
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b = '\u0062';
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c = '\u1063';
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d = '\u0064';
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break;
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default: //case UL:
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a = 'a';
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aa = '\u1061';
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b = 'b';
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c = 'c';
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d = 'd';
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break;
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}
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}
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// needle =~ /ab*d/
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// badNeedle =~ /ab*db*d/
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interface Append {void append(int pos, char cc);}
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String newNeedle(int size, int badPosition) {
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if (size<2) {throw new RuntimeException("Fix testcase "+size);}
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StringBuilder needle = new StringBuilder(size);
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Append n = (int pos, char cc) -> {
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if (pos == badPosition)
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needle.append(c);
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else
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needle.append(cc);
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};
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n.append(0, a);
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for (int i=1; i<size-1; i++) {
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n.append(i, b);
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}
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n.append(size-1, d);
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return needle.toString();
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}
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// haystack =~ /a*{needle}d*/
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String newHaystack(int size, String needle, int nPosition) {
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if (nPosition+needle.length()>size) {throw new RuntimeException("Fix testcase "+nPosition+" "+needle.length()+" "+size);}
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StringBuilder haystack = new StringBuilder(size);
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int i = 0;
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for (; i<nPosition; i++) {
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haystack.append(aa);
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}
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haystack.append(needle);
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i += needle.length();
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for (; i<size; i++) {
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haystack.append(d);
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}
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return haystack.toString();
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}
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// haystack =~ /a*{needle}+b*/
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String newHaystackRepeat(int size, String needle, int nPosition) {
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if (nPosition+needle.length()>size) {throw new RuntimeException("Fix testcase "+nPosition+" "+needle.length()+" "+size);}
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StringBuilder haystack = new StringBuilder(size);
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int i = 0;
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for (; i<nPosition; i++) {
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haystack.append(aa);
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}
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for (; i< nPosition+needle.length(); i += needle.length()) {
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haystack.append(needle);
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}
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for (; i<size; i++) {
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haystack.append(d);
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}
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return haystack.toString();
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}
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public static void main(String[] args) {
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int failures = 0;
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for (Encoding ae : Encoding.values()) {
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failures += (new IndexOf(ae))
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.test0()
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.test1()
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.test2()
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.test3()
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.test4()
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.failures;
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}
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if (failures != 0) {
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throw new RuntimeException("IndexOf test failed.");
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}
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}
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// Need to disable checks in String.java if intrinsic is to be tested
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IndexOf test0() { // Test 'trivial cases'
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// if (0==needle_len) return haystack_off;
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if (3 != "Hello".indexOf("", 3)) {
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System.out.println("FAILED: if (0==needle_len) return haystack_off");
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failures++;
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}
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//if (0==haystack_len) return -1;
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if (-1 != "".indexOf("Hello", 3)) {
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System.out.println("FAILED: if (0==haystack_len) return -1");
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failures++;
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}
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//if (needle_len>haystack_len) return -1;
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if (-1 != "Hello".indexOf("HelloWorld", 3)) {
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System.out.println("FAILED: if (needle_len>haystack_len) return -1");
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failures++;
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}
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return this;
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}
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IndexOf test1() { // Test expected to find one needle
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for (int nSize = 2; nSize<scope; nSize++) {
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String needle = newNeedle(nSize, -1);
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for (int hSize = nSize; hSize<scope; hSize++) {
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for (int i = 0; i<hSize-nSize; i++) {
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String haystack = newHaystack(hSize, needle, i);
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for (int j = 0; j<=i; j++) {
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int found = haystack.indexOf(needle, j);
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if (i != found) {
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System.out.println("("+ae.name()+")(T1) Trying needle["+nSize+"] in haystack["+hSize+"] at offset["+i+"]");
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System.out.println(" FAILED: Found " + needle + "@" + found + " in " + haystack + " from ["+j+"]");
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failures++;
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}
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}
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}
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}
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}
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return this;
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}
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IndexOf test2() { // Test needle with one mismatched character
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for (int nSize = 2; nSize<scope; nSize++) {
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for (int hSize = nSize; hSize<scope; hSize++) {
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String needle = newNeedle(nSize, -1);
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for (int badPosition = 0; badPosition < nSize; badPosition+=1) {
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String badNeedle = newNeedle(nSize, badPosition);
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for (int i = 0; i<hSize-nSize; i++) {
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String haystack = newHaystack(hSize, needle, i);
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int found = haystack.indexOf(badNeedle, 1);
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if (-1 != found) {
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System.out.println("("+ae.name()+")(T2) Trying bad needle["+nSize+"]["+badPosition+"] in haystack["+hSize+"] at offset["+i+"]");
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System.out.println(" FAILED: False " + found + " " + haystack + "["+needle+"]["+badNeedle+"]");
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failures++;
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}
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}
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}
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}
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}
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return this;
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}
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IndexOf test3() { // Test expected to find first of the repeated needles
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for (int nSize = 2; nSize<scope; nSize++) {
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String needle = newNeedle(nSize, -1);
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for (int hSize = nSize; hSize<scope; hSize++) {
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for (int i = 0; i<hSize-nSize; i++) {
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String haystack = newHaystackRepeat(hSize, needle, i);
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for (int j = 0; j<=i; j++) {
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int found = haystack.indexOf(needle, j);
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if (i != found) {
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System.out.println("("+ae.name()+")(T3) Trying repeaded needle["+nSize+"] in haystack["+hSize+"] at offset["+i+"]");
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System.out.println(" FAILED: " + found + " " + haystack + "["+needle+"]");
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failures++;
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}
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}
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}
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}
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}
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return this;
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}
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IndexOf test4() { // Test needle at unreachable offset
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for (int nSize = 2; nSize<scope; nSize++) {
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String needle = newNeedle(nSize, -1);
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for (int hSize = nSize; hSize<scope; hSize++) {
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for (int i = 0; i<hSize-nSize; i++) {
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String haystack = newHaystack(hSize, needle, i);
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// prefix lookup
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for (int j = nSize-1; j<i+nSize; j++) {
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int found = haystack.indexOf(needle, 0, j);
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if (-1 != found) {
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System.out.println("("+ae.name()+")(T4) Trying needle["+nSize+"] at offset ["+i+"] in haystack["+hSize+"] upto ["+j+"]");
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System.out.println(" FAILED: False " + found + " " + haystack + "["+needle+"]");
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failures++;
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}
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}
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// sufix lookup
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for (int j = i+1; j<hSize; j++) {
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int found = haystack.indexOf(needle, j);
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if (-1 != found) {
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System.out.println("("+ae.name()+")(T4) Trying needle["+nSize+"] at offset ["+i+"] in haystack["+hSize+"] from ["+j+"]");
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System.out.println(" FAILED: False " + found + " " + haystack + "["+needle+"]");
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failures++;
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}
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}
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}
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}
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}
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return this;
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}
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}
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