jdk-24/test/hotspot/jtreg/compiler/parsing/TestExceptionBlockWithPredecessors.jasm

/*
 * 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
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 */

super public class compiler/parsing/TestExceptionBlockWithPredecessors
	version 59:0
{

Field loopCounter:I;
Field switchOn:I;
Field iFld:I;

public Method "<init>":"()V"
	stack 1 locals 1
{
		aload_0;
		invokespecial	Method java/lang/Object."<init>":"()V";
		return;
}

Method test:"()V"
	stack 4 locals 2
{
		try t0, t1;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
		aload_0;
		getfield	Field switchOn:"I";
		tableswitch{ //1 to 3
		1: L32;
		2: L53;
		3: L57;
		default: L67 };
	L32:	stack_frame_type same;
		aload_0;
		getfield	Field loopCounter:"I";
		bipush	10;
		if_icmpge	L67;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
	L53:	stack_frame_type same;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
	L57:	stack_frame_type same;
		aload_0;
		dup;
		getfield	Field loopCounter:"I";
		iconst_1;
		iadd;
		putfield	Field loopCounter:"I";
		goto	L32;
		endtry t0, t1;
	L67:	stack_frame_type same;
		goto	L74;
		catch t0 java/lang/RuntimeException;
		stack_frame_type stack1;
		stack_map class java/lang/RuntimeException;
		astore_1;
		aload_1;
		aload_0;
		getfield	Field loopCounter:"I";
		bipush	10;
		if_icmpge	L70;
        aload_0;
        dup;
		getfield	Field loopCounter:"I";
		iconst_1;
		iadd;
		putfield	Field loopCounter:"I";
		goto L70;
		catch t1 java/lang/Throwable;
	L70:    stack_frame_type stack1;
		stack_map class java/lang/Throwable;
		astore_1;
	L74:	stack_frame_type same;
		return;
}

Method testWorksWithoutPreds:"()V"
	stack 4 locals 2
{
		try t0, t1;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
		aload_0;
		getfield	Field switchOn:"I";
		tableswitch{ //1 to 3
		1: L32; // No profile information about it. Never taken. Skip on it in first iteration in do_all_blocks()
		2: L53;
		3: L57;
		default: L67 };
	L32:	stack_frame_type same; // Only parsed in second iteration of do_all_blocks(), when both exception handler blocks are already parsed
		aload_0;
		getfield	Field loopCounter:"I";
		bipush	10;
		if_icmpge	L67;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
        aload_0;
	    getfield	Field iFld:"I";
		bipush	10;
		if_icmpeq	L53;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
	L52:	stack_frame_type same;
        aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
	L53:	stack_frame_type same;
		aload_0;
		invokevirtual	Method dontInlineThrow:"()V";
	L57:	stack_frame_type same;
		aload_0;
		dup;
		getfield	Field loopCounter:"I";
		iconst_1;
		iadd;
		putfield	Field loopCounter:"I";
		goto	L32; // Only merge block starting at that bytecode which has a smaller rpo than this block -> process in next iteration in do_all_blocks()
		endtry t0, t1;
	L67:	stack_frame_type same;
		goto	L74;
		catch t0 java/lang/RuntimeException;
		stack_frame_type stack1;
		stack_map class java/lang/RuntimeException;
		astore_1;
		aload_0;
		getfield	Field loopCounter:"I";
		bipush	10;
		if_icmpge	L74;
        aload_0;
        dup;
		getfield	Field loopCounter:"I";
		iconst_1;
		iadd;
		putfield	Field loopCounter:"I";
		goto L74;
		catch t1 java/lang/Throwable;
	L70:    stack_frame_type stack1;
		stack_map class java/lang/Throwable;
		astore_1;
	L74:	stack_frame_type same;
		return;
}


public Method dontInlineThrow:"()V"
	throws java/lang/RuntimeException
	stack 0 locals 1
{
		return;
}

} // end Class TestExceptionBlockWithPredecessors