Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/type/NarrowOopStamp.java @ 15198:2c0cfbf454b5
Move LIRTypeTool and Stamp to graal.compiler.common.
author | Josef Eisl <josef.eisl@jku.at> |
---|---|
date | Thu, 17 Apr 2014 17:28:20 +0200 |
parents | 5e4ae8709830 |
children | 882f4cb7cfcf |
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/* * Copyright (c) 2014, 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.oracle.graal.hotspot.nodes.type; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.spi.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.hotspot.HotSpotVMConfig.CompressEncoding; import com.oracle.graal.nodes.type.*; public class NarrowOopStamp extends ObjectStamp { public static final PlatformKind NarrowOop = new PlatformKind() { public String name() { return "NarrowOop"; } @Override public String toString() { return name(); } }; private final CompressEncoding encoding; public NarrowOopStamp(ObjectStamp stamp, CompressEncoding encoding) { this(stamp.type(), stamp.isExactType(), stamp.nonNull(), stamp.alwaysNull(), encoding); } public NarrowOopStamp(ResolvedJavaType type, boolean exactType, boolean nonNull, boolean alwaysNull, CompressEncoding encoding) { super(type, exactType, nonNull, alwaysNull); this.encoding = encoding; } public Stamp uncompressed() { return new ObjectStamp(type(), isExactType(), nonNull(), alwaysNull()); } public CompressEncoding getEncoding() { return encoding; } @Override public Stamp unrestricted() { return new NarrowOopStamp((ObjectStamp) super.unrestricted(), encoding); } @Override public Stamp illegal() { return new NarrowOopStamp((ObjectStamp) super.illegal(), encoding); } @Override public Kind getStackKind() { return Kind.Object; } @Override public PlatformKind getPlatformKind(LIRTypeTool tool) { return NarrowOop; } @Override public String toString() { StringBuilder str = new StringBuilder(); str.append('n'); str.append(super.toString()); return str.toString(); } @Override public Stamp meet(Stamp otherStamp) { if (this == otherStamp) { return this; } if (!isCompatible(otherStamp)) { return StampFactory.illegal(); } return new NarrowOopStamp((ObjectStamp) super.meet(otherStamp), encoding); } @Override public Stamp join(Stamp otherStamp) { if (this == otherStamp) { return this; } if (!isCompatible(otherStamp)) { return StampFactory.illegal(Kind.Illegal); } return new NarrowOopStamp((ObjectStamp) super.join(otherStamp), encoding); } @Override public boolean isCompatible(Stamp other) { if (this == other) { return true; } if (other instanceof NarrowOopStamp) { NarrowOopStamp narrow = (NarrowOopStamp) other; return encoding.equals(narrow.encoding); } return false; } @Override public int hashCode() { final int prime = 31; int result = super.hashCode(); result = prime * result + encoding.hashCode(); return result; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (obj == null || getClass() != obj.getClass()) { return false; } NarrowOopStamp other = (NarrowOopStamp) obj; if (!encoding.equals(other.encoding)) { return false; } return super.equals(other); } }