Mercurial > hg > truffle
view graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiValueUtil.java @ 4292:48cbd78fa964
First draft of SSA-based linear scan allocator
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Tue, 17 Jan 2012 19:38:48 -0800 |
parents | 1cf920630944 |
children | 9ce8594bedaf |
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/* * Copyright (c) 2012, 2012, 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.max.cri.ci; public class CiValueUtil { public static boolean isIllegal(CiValue value) { assert value != null; return value == CiValue.IllegalValue; } public static boolean isLegal(CiValue value) { return !isIllegal(value); } public static boolean isVirtualObject(CiValue value) { assert value != null; return value instanceof CiVirtualObject; } public static CiVirtualObject asVirtualObject(CiValue value) { assert value != null; return (CiVirtualObject) value; } public static boolean isConstant(CiValue value) { assert value != null; return value instanceof CiConstant; } public static CiConstant asConstant(CiValue value) { assert value != null; return (CiConstant) value; } public static boolean isStackSlot(CiValue value) { assert value != null; return value instanceof CiStackSlot; } public static CiStackSlot asStackSlot(CiValue value) { assert value != null; return (CiStackSlot) value; } public static boolean isRegister(CiValue value) { assert value != null; return value instanceof CiRegisterValue; } public static CiRegister asRegister(CiValue value) { assert value != null; return ((CiRegisterValue) value).reg; } public static CiRegister asIntReg(CiValue value) { assert value.kind == CiKind.Int || value.kind == CiKind.Jsr; return asRegister(value); } public static CiRegister asLongReg(CiValue value) { assert value.kind == CiKind.Long : value.kind; return asRegister(value); } public static CiRegister asObjectReg(CiValue value) { assert value.kind == CiKind.Object; return asRegister(value); } public static CiRegister asFloatReg(CiValue value) { assert value.kind == CiKind.Float; return asRegister(value); } public static CiRegister asDoubleReg(CiValue value) { assert value.kind == CiKind.Double; return asRegister(value); } public static boolean sameRegister(CiValue...values) { for (int i = 0; i < values.length; i++) { for (int j = i + 1; j < values.length; j++) { if (isRegister(values[i]) && isRegister(values[j]) && asRegister(values[i]) != asRegister(values[j])) { return false; } } } return true; } public static boolean differentRegisters(CiValue...values) { for (int i = 0; i < values.length; i++) { for (int j = i + 1; j < values.length; j++) { if (isRegister(values[i]) && isRegister(values[j]) && asRegister(values[i]) == asRegister(values[j])) { return false; } } } return true; } }