--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/codegen/Test6896617.java Tue Jul 12 18:24:48 2016 +0300
@@ -0,0 +1,344 @@
+/*
+ * Copyright (c) 2013, 2015, 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 6896617
+ * @summary Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() with SSE instructions on x86
+ * @library /testlibrary
+ * @modules java.base/jdk.internal.misc
+ * java.base/sun.nio.cs
+ * java.management
+ *
+ * @run main/othervm/timeout=1200 -Xbatch -Xmx256m compiler.codegen.Test6896617
+ */
+
+package compiler.codegen;
+
+import jdk.test.lib.Utils;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.CodingErrorAction;
+import java.util.Arrays;
+import java.util.Random;
+
+public class Test6896617 {
+ final static int SIZE = 256;
+
+ public static void main(String[] args) {
+ String csn = "ISO-8859-1";
+ Charset cs = Charset.forName(csn);
+ CharsetEncoder enc = cs.newEncoder();
+ enc.onMalformedInput(CodingErrorAction.REPLACE)
+ .onUnmappableCharacter(CodingErrorAction.REPLACE);
+ CharsetDecoder dec = cs.newDecoder();
+ dec.onMalformedInput(CodingErrorAction.REPLACE)
+ .onUnmappableCharacter(CodingErrorAction.REPLACE);
+
+ byte repl = (byte)'?';
+ enc.replaceWith(new byte[] { repl });
+
+ // Use internal API for tests.
+ sun.nio.cs.ArrayEncoder arrenc = (sun.nio.cs.ArrayEncoder)enc;
+ sun.nio.cs.ArrayDecoder arrdec = (sun.nio.cs.ArrayDecoder)dec;
+
+ // Populate char[] with chars which can be encoded by ISO_8859_1 (<= 0xFF)
+ Random rnd = Utils.getRandomInstance();
+ int maxchar = 0xFF;
+ char[] a = new char[SIZE];
+ byte[] b = new byte[SIZE];
+ char[] at = new char[SIZE];
+ byte[] bt = new byte[SIZE];
+ for (int i = 0; i < SIZE; i++) {
+ char c = (char) rnd.nextInt(maxchar);
+ if (!enc.canEncode(c)) {
+ System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
+ System.exit(97);
+ }
+ a[i] = c;
+ b[i] = (byte)c;
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+ if (arrenc.encode(a, 0, SIZE, bt) != SIZE || !Arrays.equals(b, bt)) {
+ System.out.println("Something wrong: ArrayEncoder.encode failed");
+ System.exit(97);
+ }
+ if (arrdec.decode(b, 0, SIZE, at) != SIZE || !Arrays.equals(a, at)) {
+ System.out.println("Something wrong: ArrayDecoder.decode failed");
+ System.exit(97);
+ }
+ for (int i = 0; i < SIZE; i++) {
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+
+ ByteBuffer bb = ByteBuffer.wrap(b);
+ CharBuffer ba = CharBuffer.wrap(a);
+ ByteBuffer bbt = ByteBuffer.wrap(bt);
+ CharBuffer bat = CharBuffer.wrap(at);
+ if (!enc.encode(ba, bbt, true).isUnderflow() || !Arrays.equals(b, bt)) {
+ System.out.println("Something wrong: Encoder.encode failed");
+ System.exit(97);
+ }
+ if (!dec.decode(bb, bat, true).isUnderflow() || !Arrays.equals(a, at)) {
+ System.out.println("Something wrong: Decoder.decode failed");
+ System.exit(97);
+ }
+ for (int i = 0; i < SIZE; i++) {
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+
+ // Warm up
+ boolean failed = false;
+ int result = 0;
+ for (int i = 0; i < 10000; i++) {
+ result += arrenc.encode(a, 0, SIZE, bt);
+ result -= arrdec.decode(b, 0, SIZE, at);
+ }
+ for (int i = 0; i < 10000; i++) {
+ result += arrenc.encode(a, 0, SIZE, bt);
+ result -= arrdec.decode(b, 0, SIZE, at);
+ }
+ for (int i = 0; i < 10000; i++) {
+ result += arrenc.encode(a, 0, SIZE, bt);
+ result -= arrdec.decode(b, 0, SIZE, at);
+ }
+ if (result != 0 || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
+ failed = true;
+ System.out.println("Failed: ArrayEncoder.encode char[" + SIZE + "] and ArrayDecoder.decode byte[" + SIZE + "]");
+ }
+ for (int i = 0; i < SIZE; i++) {
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+
+ boolean is_underflow = true;
+ for (int i = 0; i < 10000; i++) {
+ ba.clear(); bb.clear(); bat.clear(); bbt.clear();
+ boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
+ boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
+ is_underflow = is_underflow && enc_res && dec_res;
+ }
+ for (int i = 0; i < SIZE; i++) {
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+ for (int i = 0; i < 10000; i++) {
+ ba.clear(); bb.clear(); bat.clear(); bbt.clear();
+ boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
+ boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
+ is_underflow = is_underflow && enc_res && dec_res;
+ }
+ for (int i = 0; i < SIZE; i++) {
+ at[i] = (char)-1;
+ bt[i] = (byte)-1;
+ }
+ for (int i = 0; i < 10000; i++) {
+ ba.clear(); bb.clear(); bat.clear(); bbt.clear();
+ boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
+ boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
+ is_underflow = is_underflow && enc_res && dec_res;
+ }
+ if (!is_underflow || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
+ failed = true;
+ System.out.println("Failed: Encoder.encode char[" + SIZE + "] and Decoder.decode byte[" + SIZE + "]");
+ }
+
+ // Test encoder with different source and destination sizes
+ System.out.println("Testing different source and destination sizes");
+ for (int i = 1; i <= SIZE; i++) {
+ for (int j = 1; j <= SIZE; j++) {
+ bt = new byte[j];
+ // very source's SIZE
+ result = arrenc.encode(a, 0, i, bt);
+ int l = Math.min(i, j);
+ if (result != l) {
+ failed = true;
+ System.out.println("Failed: encode char[" + i + "] to byte[" + j + "]: result = " + result + ", expected " + l);
+ }
+ for (int k = 0; k < l; k++) {
+ if (bt[k] != b[k]) {
+ failed = true;
+ System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
+ }
+ }
+ // very source's offset
+ int sz = SIZE - i + 1;
+ result = arrenc.encode(a, i-1, sz, bt);
+ l = Math.min(sz, j);
+ if (result != l) {
+ failed = true;
+ System.out.println("Failed: encode char[" + sz + "] to byte[" + j + "]: result = " + result + ", expected " + l);
+ }
+ for (int k = 0; k < l; k++) {
+ if (bt[k] != b[i+k-1]) {
+ failed = true;
+ System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[i+k-1]);
+ }
+ }
+ }
+ }
+
+ // Test encoder with char > 0xFF
+ System.out.println("Testing big char");
+
+ byte orig = (byte)'A';
+ bt = new byte[SIZE];
+ for (int i = 1; i <= SIZE; i++) {
+ for (int j = 0; j < i; j++) {
+ a[j] += 0x100;
+ // make sure to replace a different byte
+ bt[j] = orig;
+ result = arrenc.encode(a, 0, i, bt);
+ if (result != i) {
+ failed = true;
+ System.out.println("Failed: encode char[" + i + "] to byte[" + i + "]: result = " + result + ", expected " + i);
+ }
+ if (bt[j] != repl) {
+ failed = true;
+ System.out.println("Failed: encoded replace byte[" + j + "] (" + bt[j] + ") != " + repl);
+ }
+ bt[j] = b[j]; // Restore to compare whole array
+ for (int k = 0; k < i; k++) {
+ if (bt[k] != b[k]) {
+ failed = true;
+ System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
+ }
+ }
+ a[j] -= 0x100; // Restore
+ }
+ }
+
+ // Test sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() performance.
+
+ int itrs = Integer.getInteger("iterations", 1000000);
+ int size = Integer.getInteger("size", 256);
+ a = new char[size];
+ b = new byte[size];
+ bt = new byte[size];
+ for (int i = 0; i < size; i++) {
+ char c = (char) rnd.nextInt(maxchar);
+ if (!enc.canEncode(c)) {
+ System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
+ System.exit(97);
+ }
+ a[i] = c;
+ b[i] = (byte)-1;
+ bt[i] = (byte)c;
+ }
+ ba = CharBuffer.wrap(a);
+ bb = ByteBuffer.wrap(b);
+ boolean enc_res = enc.encode(ba, bb, true).isUnderflow();
+ if (!enc_res || !Arrays.equals(b, bt)) {
+ failed = true;
+ System.out.println("Failed 1: Encoder.encode char[" + size + "]");
+ }
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+
+ // Make sure to recompile method if needed before performance run.
+ for (int i = 0; i < 10000; i++) {
+ ba.clear(); bb.clear();
+ enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
+ }
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+ for (int i = 0; i < 10000; i++) {
+ ba.clear(); bb.clear();
+ enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
+ }
+ if (!enc_res || !Arrays.equals(b, bt)) {
+ failed = true;
+ System.out.println("Failed 2: Encoder.encode char[" + size + "]");
+ }
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+
+ System.out.println("Testing ISO_8859_1$Encode.encodeArrayLoop() performance");
+ long start = System.currentTimeMillis();
+ for (int i = 0; i < itrs; i++) {
+ ba.clear(); bb.clear();
+ enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
+ }
+ long end = System.currentTimeMillis();
+ if (!enc_res || !Arrays.equals(b, bt)) {
+ failed = true;
+ System.out.println("Failed 3: Encoder.encode char[" + size + "]");
+ } else {
+ System.out.println("size: " + size + " time: " + (end - start));
+ }
+
+ // Test sun.nio.cs.ISO_8859_1$Encode.encode() performance.
+
+ // Make sure to recompile method if needed before performance run.
+ result = 0;
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+ for (int i = 0; i < 10000; i++) {
+ result += arrenc.encode(a, 0, size, b);
+ }
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+ for (int i = 0; i < 10000; i++) {
+ result += arrenc.encode(a, 0, size, b);
+ }
+ if (result != size*20000 || !Arrays.equals(b, bt)) {
+ failed = true;
+ System.out.println("Failed 1: ArrayEncoder.encode char[" + SIZE + "]");
+ }
+ for (int i = 0; i < size; i++) {
+ b[i] = (byte)-1;
+ }
+
+ System.out.println("Testing ISO_8859_1$Encode.encode() performance");
+ result = 0;
+ start = System.currentTimeMillis();
+ for (int i = 0; i < itrs; i++) {
+ result += arrenc.encode(a, 0, size, b);
+ }
+ end = System.currentTimeMillis();
+ if (!Arrays.equals(b, bt)) {
+ failed = true;
+ System.out.println("Failed 2: ArrayEncoder.encode char[" + size + "]");
+ } else {
+ System.out.println("size: " + size + " time: " + (end - start));
+ }
+
+ if (failed) {
+ System.out.println("FAILED");
+ System.exit(97);
+ }
+ System.out.println("PASSED");
+ }
+}