Mercurial > hg > graal-compiler
view graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiConstantPool.java @ 4211:bf6d8bcde8a0
Do not emit stack-to-stack moves.
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Tue, 03 Jan 2012 18:41:01 -0800 |
parents | aaac4894175c |
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/* * Copyright (c) 2009, 2011, 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.ri; /** * Represents the runtime representation of the constant pool that is * used by the compiler when parsing bytecode. The {@code lookupXXX} methods look up a constant * pool entry without performing resolution, and are used during compilation. */ public interface RiConstantPool { /** * Makes sure that the type referenced by the specified constant pool entry is loaded and * initialized. This can be used to compile time resolve a type. It works for field, method, * or type constant pool entries. * @param cpi the index of the constant pool entry that references the type * @param opcode the opcode of the instruction that references the type */ void loadReferencedType(int cpi, int opcode); /** * Looks up a reference to a field. If {@code opcode} is non-negative, then resolution checks * specific to the JVM instruction it denotes are performed if the field is already resolved. * Should any of these checks fail, an {@linkplain RiField#isResolved() unresolved} * field reference is returned. * * @param cpi the constant pool index * @param opcode the opcode of the instruction for which the lookup is being performed or {@code -1} * @return a reference to the field at {@code cpi} in this pool * @throws ClassFormatError if the entry at {@code cpi} is not a field */ RiField lookupField(int cpi, int opcode); /** * Looks up a reference to a method. If {@code opcode} is non-negative, then resolution checks * specific to the JVM instruction it denotes are performed if the method is already resolved. * Should any of these checks fail, an {@linkplain RiMethod#isResolved() unresolved} * method reference is returned. * * @param cpi the constant pool index * @param opcode the opcode of the instruction for which the lookup is being performed or {@code -1} * @return a reference to the method at {@code cpi} in this pool * @throws ClassFormatError if the entry at {@code cpi} is not a method */ RiMethod lookupMethod(int cpi, int opcode); /** * Looks up a reference to a type. If {@code opcode} is non-negative, then resolution checks * specific to the JVM instruction it denotes are performed if the type is already resolved. * Should any of these checks fail, an {@linkplain RiType#isResolved() unresolved} * type reference is returned. * * @param cpi the constant pool index * @param opcode the opcode of the instruction for which the lookup is being performed or {@code -1} * @return a reference to the compiler interface type */ RiType lookupType(int cpi, int opcode); /** * Looks up a method signature. * * @param cpi the constant pool index * @return the method signature at index {@code cpi} in this constant pool */ RiSignature lookupSignature(int cpi); /** * Looks up a constant at the specified index. * @param cpi the constant pool index * @return the {@code CiConstant} instance representing the constant */ Object lookupConstant(int cpi); }