Mercurial > hg > graal-compiler
view graal/com.oracle.graal.compiler.common/src/com/oracle/graal/compiler/common/type/IllegalStamp.java @ 22604:b00cc0475f31
Update jvmci import: Refactoring: Rename Kind to JavaKind.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 08 Sep 2015 19:57:39 +0200 |
parents | 3285aa5a60f8 |
children | 05183a084a08 |
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/* * Copyright (c) 2012, 2015, 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.compiler.common.type; import jdk.internal.jvmci.common.*; import jdk.internal.jvmci.meta.*; import com.oracle.graal.compiler.common.spi.*; /** * This stamp represents the type of the {@link JavaKind#Illegal} value in the second slot of * {@link JavaKind#Long} and {@link JavaKind#Double} values. It can only appear in framestates or * virtual objects. */ public final class IllegalStamp extends Stamp { private IllegalStamp() { } @Override public JavaKind getStackKind() { return JavaKind.Illegal; } @Override public LIRKind getLIRKind(LIRKindTool tool) { return LIRKind.Illegal; } @Override public Stamp unrestricted() { return this; } @Override public Stamp empty() { return this; } @Override public Stamp constant(Constant c, MetaAccessProvider meta) { assert ((PrimitiveConstant) c).getJavaKind() == JavaKind.Illegal; return this; } @Override public ResolvedJavaType javaType(MetaAccessProvider metaAccess) { throw JVMCIError.shouldNotReachHere("illegal stamp has no Java type"); } @Override public Stamp meet(Stamp other) { assert other instanceof IllegalStamp; return this; } @Override public Stamp join(Stamp other) { assert other instanceof IllegalStamp; return this; } @Override public boolean isCompatible(Stamp stamp) { return stamp instanceof IllegalStamp; } @Override public String toString() { return "ILLEGAL"; } @Override public boolean hasValues() { return true; } @Override public Stamp improveWith(Stamp other) { assert other instanceof IllegalStamp; return this; } @Override public Constant readConstant(MemoryAccessProvider provider, Constant base, long displacement) { throw JVMCIError.shouldNotReachHere("can't read values of illegal stamp"); } private static final IllegalStamp instance = new IllegalStamp(); static IllegalStamp getInstance() { return instance; } }