8260339: JVM crashes when executing PhaseIdealLoop::match_fill_loop

Co-authored-by: He Xuejin <hexuejin2@huawei.com>
Reviewed-by: neliasso, kvn, iignatyev

src/hotspot/share/runtime/stubRoutines.cpp

@@ -524,6 +524,7 @@ address StubRoutines::select_fill_function(BasicType t, bool aligned, const char
   case T_NARROWOOP:
   case T_NARROWKLASS:
   case T_ADDRESS:
+  case T_VOID:
     // Currently unsupported
     return NULL;
 

test/hotspot/jtreg/compiler/vectorapi/TestLoopStoreVector.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2021, Huawei Technologies Co. Ltd. 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.vectorapi;
+
+import jdk.incubator.vector.IntVector;
+import jdk.incubator.vector.LongVector;
+import jdk.incubator.vector.VectorSpecies;
+
+/*
+ * @test
+ * @bug 8260339
+ * @summary StoreVectorNode is not considered with -XX:+OptimizeFill
+ * @modules jdk.incubator.vector
+ *
+ * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeFill compiler.vectorapi.TestLoopStoreVector
+ */
+
+public class TestLoopStoreVector {
+    static final VectorSpecies<Integer> SPECIESi = IntVector.SPECIES_PREFERRED;
+    static final VectorSpecies<Long> SPECIESl = LongVector.SPECIES_PREFERRED;
+
+    static final int INVOC_COUNT = 5000;
+    static final int size = 64;
+
+    static int[] ai = {20, 21, 02, 14, 83, 119, 101, 101, 116, 121, 44, 32,
+                       73, 32, 76, 79, 86, 69, 32, 89, 79, 85, 32, 102, 111,
+                       114, 101, 118, 101, 114, 33, 32, 32, 32, 45, 45, 32,
+                       32, 32, 66, 121, 32, 87, 97, 110, 103, 72, 117, 97,
+                       110, 103,46, 76, 105, 102, 101, 32, 105, 115, 32, 116,
+                       104, 101, 32};
+    static long[] al = {102, 108, 111, 119, 101, 114, 32, 102, 111, 114, 32,
+                        119, 104, 105, 99, 104, 32, 108, 111, 118, 101, 32,
+                        105, 115, 32, 116, 104, 101, 32, 104, 111, 110, 101,
+                        121, 46, 32, 87, 101, 32, 119, 105, 108, 108, 32, 115,
+                        116, 105, 99, 107, 32, 116, 111, 103, 101, 116, 104,
+                        101, 114, 32, 33, 33, 33, 33, 32};
+
+    public static void testVectorCastL2I(long[] input, int[] output, VectorSpecies<Long> speciesl, VectorSpecies<Integer> speciesi) {
+        LongVector av = LongVector.fromArray(speciesl, input, 0);
+        IntVector bv = (IntVector) av.castShape(speciesi, 0);
+        bv.intoArray(output, 0);
+    }
+
+    public static int test0() {
+        for (int i = 0; i < 1000; i++) {
+            testVectorCastL2I(al, ai, SPECIESl, SPECIESi);
+        }
+        return 0;
+    }
+
+    public static void main(String[] args) {
+        for (int i = 0; i < INVOC_COUNT; i++) {
+            test0();
+        }
+        for (int i = 0; i < 64; i++) {
+            System.out.print(ai[i] + " ");
+        }
+        System.out.println("");
+    }
+}