| /* |
| * Copyright (c) 2020, 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 8249603 |
| * @summary The C1 register allocator uses a register hint interval i as spill location for an interval j which |
| * overlaps with one of i's split children which has the same spill location which lets verification fail. |
| * |
| * @run main/othervm -Xcomp -XX:CompileCommand=compileonly,compiler.regalloc.TestC1OverlappingRegisterHint::* |
| * compiler.regalloc.TestC1OverlappingRegisterHint |
| */ |
| package compiler.regalloc; |
| |
| public class TestC1OverlappingRegisterHint { |
| |
| public static int iFldStatic = 10; |
| public int iFld = 11; |
| |
| public int test() { |
| int a = 1; |
| int b = 2; |
| int c = 3; |
| int v = 4; |
| int w = 5; |
| int x = 6; |
| int y = 7; |
| int z = 8; |
| int iArr[] = new int[400]; |
| |
| double d = 1.5; |
| |
| int k = 0; |
| for (a = 9; a < 283; a += 2) { |
| for (int i = 8; i < 183; i++) { |
| } |
| } |
| |
| for (int i = 12; i < 283; i++) { |
| iFldStatic += i; |
| for (int j = 1; 93 > j; j += 2) { |
| x += (j - z); |
| c -= iFld; |
| k = 3; |
| while ((k -= 2) > 0) { |
| } |
| switch ((i % 8) + 52) { |
| case 52: |
| iArr[8] = 5; |
| for (int i20 = 1; i20 < 3; ++i20) { |
| x *= (int)d; |
| w += 5; |
| } |
| break; |
| case 53: |
| case 55: |
| v *= iFldStatic; |
| break; |
| case 56: |
| case 57: |
| try { |
| iArr[5] = a; |
| v = (a / b); |
| } catch (ArithmeticException a_e) {} |
| break; |
| default: |
| iFldStatic += iFldStatic; |
| } |
| } |
| } |
| return y + k; |
| } |
| |
| public static void main(String[] strArr) { |
| TestC1OverlappingRegisterHint _instance = new TestC1OverlappingRegisterHint(); |
| for (int i = 0; i < 10; i++) { |
| _instance.test(); |
| } |
| } |
| } |
| |