Mercurial > hg > graal-jvmci-8
diff jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/Location.java @ 22672:1bbd4a7c274b
Rename jdk.internal.jvmci to jdk.vm.ci
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
---|---|
date | Thu, 08 Oct 2015 17:28:41 -0700 |
parents | jvmci/jdk.internal.jvmci.code/src/jdk/internal/jvmci/code/Location.java@ae67bd822493 |
children | 3e8ce13f4e12 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/Location.java Thu Oct 08 17:28:41 2015 -0700 @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2015, 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 jdk.vm.ci.code; + +/** + * Represents a location where a value can be stored. This can be either a {@link Register} or a + * stack slot. + */ +public final class Location { + + public final Register reg; + public final int offset; + + private Location(Register reg, int offset) { + this.reg = reg; + this.offset = offset; + } + + /** + * Create a {@link Location} for a register. + */ + public static Location register(Register reg) { + return new Location(reg, 0); + } + + /** + * Create a {@link Location} for a vector subregister. + * + * @param reg the {@link Register vector register} + * @param offset the offset in bytes into the vector register + */ + public static Location subregister(Register reg, int offset) { + return new Location(reg, offset); + } + + /** + * Create a {@link Location} for a stack slot. + */ + public static Location stack(int offset) { + return new Location(null, offset); + } + + public boolean isRegister() { + return reg != null; + } + + public boolean isStack() { + return reg == null; + } + + @Override + public String toString() { + String regName; + if (isRegister()) { + regName = reg.name + ":"; + } else { + regName = "stack:"; + } + return regName + offset; + } +}