Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/ir/NewInstance.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/ir/NewInstance.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2009, 2011, 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. + */ +package com.sun.c1x.ir; + +import com.sun.c1x.debug.*; +import com.sun.c1x.value.*; +import com.sun.cri.ci.*; +import com.sun.cri.ri.*; + +/** + * The {@code NewInstance} instruction represents the allocation of an instance class object. + * + * @author Ben L. Titzer + */ +public final class NewInstance extends StateSplit { + + final RiType instanceClass; + public final int cpi; + public final RiConstantPool constantPool; + + /** + * Constructs a NewInstance instruction. + * @param type the class being allocated + * @param cpi the constant pool index + * @param stateBefore the state before executing this instruction + */ + public NewInstance(RiType type, int cpi, RiConstantPool constantPool, FrameState stateBefore) { + super(CiKind.Object, stateBefore); + this.instanceClass = type; + this.cpi = cpi; + this.constantPool = constantPool; + setFlag(Flag.NonNull); + setFlag(Flag.ResultIsUnique); + } + + /** + * Gets the instance class being allocated by this instruction. + * @return the instance class allocated + */ + public RiType instanceClass() { + return instanceClass; + } + + /** + * Checks whether this instruction can trap. + * @return {@code true}, assuming that allocation can cause OutOfMemory or other exceptions + */ + @Override + public boolean canTrap() { + return true; + } + + /** + * Gets the exact type produced by this instruction. For allocations of instance classes, this is + * always the class allocated. + * @return the exact type produced by this instruction + */ + @Override + public RiType exactType() { + return instanceClass; + } + + @Override + public void accept(ValueVisitor v) { + v.visitNewInstance(this); + } + + @Override + public void print(LogStream out) { + out.print("new instance ").print(CiUtil.toJavaName(instanceClass())); + } +}