Mercurial > hg > graal-compiler
view graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/ValueUtil.java @ 21591:6c5327245831
LinearScan: fix intervals context.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Fri, 29 May 2015 10:59:03 +0200 |
parents | f5b549811bac |
children |
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/* * Copyright (c) 2012, 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.jvmci.code; import com.oracle.jvmci.meta.Kind; import com.oracle.jvmci.meta.Value; import com.oracle.jvmci.meta.AllocatableValue; import com.oracle.jvmci.meta.JavaConstant; import java.util.*; /** * Utility class for working with the {@link Value} class and its subclasses. */ public final class ValueUtil { public static boolean isIllegal(Value value) { assert value != null; return Value.ILLEGAL.equals(value); } public static boolean isLegal(Value value) { return !isIllegal(value); } public static boolean isVirtualObject(Value value) { assert value != null; return value instanceof VirtualObject; } public static VirtualObject asVirtualObject(Value value) { assert value != null; return (VirtualObject) value; } public static boolean isConstant(Value value) { assert value != null; return value instanceof JavaConstant; } public static JavaConstant asConstant(Value value) { assert value != null; return (JavaConstant) value; } public static boolean isAllocatableValue(Value value) { assert value != null; return value instanceof AllocatableValue; } public static AllocatableValue asAllocatableValue(Value value) { assert value != null; return (AllocatableValue) value; } public static boolean isStackSlot(Value value) { assert value != null; return value instanceof StackSlot; } public static StackSlot asStackSlot(Value value) { assert value != null; return (StackSlot) value; } public static boolean isStackSlotValue(Value value) { assert value != null; return value instanceof StackSlotValue; } public static StackSlotValue asStackSlotValue(Value value) { assert value != null; return (StackSlotValue) value; } public static boolean isVirtualStackSlot(Value value) { assert value != null; return value instanceof VirtualStackSlot; } public static VirtualStackSlot asVirtualStackSlot(Value value) { assert value != null; return (VirtualStackSlot) value; } public static boolean isRegister(Value value) { assert value != null; return value instanceof RegisterValue; } public static Register asRegister(Value value) { assert value != null; return ((RegisterValue) value).getRegister(); } public static Register asIntReg(Value value) { if (value.getKind().getStackKind() != Kind.Int) { throw new InternalError("needed Int got: " + value.getKind()); } else { return asRegister(value); } } public static Register asLongReg(Value value) { if (value.getKind() != Kind.Long) { throw new InternalError("needed Long got: " + value.getKind()); } else { return asRegister(value); } } public static Register asObjectReg(Value value) { assert value.getKind() == Kind.Object : value.getKind(); return asRegister(value); } public static Register asFloatReg(Value value) { assert value.getKind() == Kind.Float : value.getKind(); return asRegister(value); } public static Register asDoubleReg(Value value) { assert value.getKind() == Kind.Double : value.getKind(); return asRegister(value); } public static boolean sameRegister(Value v1, Value v2) { return isRegister(v1) && isRegister(v2) && asRegister(v1).equals(asRegister(v2)); } public static boolean sameRegister(Value v1, Value v2, Value v3) { return sameRegister(v1, v2) && sameRegister(v1, v3); } /** * Checks if all the provided values are different physical registers. The parameters can be * either {@link Register registers}, {@link Value values} or arrays of them. All values that * are not {@link RegisterValue registers} are ignored. */ public static boolean differentRegisters(Object... values) { List<Register> registers = collectRegisters(values, new ArrayList<Register>()); for (int i = 1; i < registers.size(); i++) { Register r1 = registers.get(i); for (int j = 0; j < i; j++) { Register r2 = registers.get(j); if (r1.equals(r2)) { return false; } } } return true; } private static List<Register> collectRegisters(Object[] values, List<Register> registers) { for (Object o : values) { if (o instanceof Register) { registers.add((Register) o); } else if (o instanceof Value) { if (isRegister((Value) o)) { registers.add(asRegister((Value) o)); } } else if (o instanceof Object[]) { collectRegisters((Object[]) o, registers); } else { throw new IllegalArgumentException("Not a Register or Value: " + o); } } return registers; } }