8321107: Add more test cases for JDK-8319372

Reviewed-by: roland, kvn

Author: chhagedorn

test/hotspot/jtreg/compiler/c2/TestTopCastIIOnUndetectedDeadPath4.java

@@ -0,0 +1,134 @@
+/*
+ * 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.
+ */
+
+/*
+ * @test id=JDK-8293941
+ * @bug 8319372 8293941
+ * @summary Tests that CastII are not dying anymore and breaking the graph due to control that is not removed
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -XX:-RangeCheckElimination
+ *                   -Xcomp -XX:CompileOnly=compiler.c2.TestTopCastIIOnUndetectedDeadPath4::*
+ *                   compiler.c2.TestTopCastIIOnUndetectedDeadPath4
+ */
+
+/*
+ * @test id=JDK-8314111
+ * @bug 8319372 8314111
+ * @summary Tests that CastII are not dying anymore and breaking the graph due to control that is not removed
+ * @run main/othervm -Xcomp -XX:CompileOnly=compiler.c2.TestTopCastIIOnUndetectedDeadPath4::test*
+ *                   compiler.c2.TestTopCastIIOnUndetectedDeadPath4
+ */
+
+/*
+ * @test id=NoFlags
+ * @summary Tests that CastII are not dying anymore and breaking the graph due to control that is not removed
+ * @run main/othervm compiler.c2.TestTopCastIIOnUndetectedDeadPath4
+ */
+
+package compiler.c2;
+
+public class TestTopCastIIOnUndetectedDeadPath4 {
+
+    static boolean bFld;
+    static int iArrFld[];
+    static long lArrFld[];
+    static double dArrFld[][];
+
+    public static void main(String[] strArr) {
+        for (int i = 0; i < 5000; i++) {
+            test8293941();
+            test8314111_1();
+            test8314111_2();
+        }
+    }
+
+    static void test8293941() {
+        int i16;
+        boolean b = false;
+        for (double d1 = 31.2; d1 < 72; d1++) {
+            for (i16 = (int) d1; i16 < 2; ++i16) {
+                iArrFld[i16] >>= 5;
+                dArrFld[i16 - 1][i16] = 3;
+                if (b) {
+                    break;
+                }
+                lArrFld[i16] = 4;
+            }
+            switch (0) {
+                case 5:
+                    b = b;
+            }
+        }
+    }
+
+    static void test8314111_1() {
+        int i, i1 = 0, i28, i30 = 0, iArr[] = new int[10];
+        boolean bArr[] = new boolean[10];
+        i = 1;
+        while (++i < 5) {
+            try {
+                i1 = iArr[i - 1];
+                i1 = 2 / i;
+            } catch (ArithmeticException a_e) {
+            }
+            if (bFld) {
+                switch (i) {
+                    case 4:
+                        for (i28 = 3; 100 > i28; i28++) {
+                            i1 -= i28;
+                        }
+                        if ((i30 -= 3) > 0) {
+                            switch (i30) {
+                                case 4:
+                                    bArr[i - 1] = bFld;
+                                    iArr[i] = 6;
+                            }
+                        }
+                }
+            }
+        }
+    }
+
+    static void test8314111_2() {
+        int iArr[] = new int[1000];
+        boolean bArr[] = new boolean[1000];
+        int x = 0;
+        int i = 1;
+        while (++i < 5) {
+            try {
+                x = iArr[i - 1];
+                x = 2 / i;
+            } catch (ArithmeticException a_e) {
+            }
+            if (bFld) {
+                x++;
+                bArr[i - 1] = false;
+                iArr[i] = 0;
+            }
+        }
+    }
+}
+
+class Foo {
+    public static void empty() {
+    }
+}