jdk-24/test/hotspot/jtreg/compiler/loopopts/TestCountedLoopInsideInfiniteLoop.jasm
2023-06-12 07:40:58 +00:00

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/*
* 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.
*/
super public class TestCountedLoopInsideInfiniteLoop
{
public Method "<init>":"()V"
stack 2 locals 1
{
aload_0;
invokespecial Method java/lang/Object."<init>":"()V";
return;
}
static Method test:"(IIII)V"
stack 200 locals 4
{
iload 0; // arg0 == 0
ifeq LEND;
LOOP1: // counted loop to kick off beautify_loops
iload 1;
ifeq LOOP1;
iload 2;
ifle LOOP1;
LOOP2: // infinite loop (still Region)
goto LOOP2b;
LOOP2b: // counted loop (still Region)
iinc 3, -1;
iload 3;
ifgt LOOP2b;
iconst_0;
ifeq LOOP2; // always true
goto LOOP2b;
LEND:
return;
}
}