001/*
002 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.phases.common.inlining.info;
024
025import java.util.*;
026
027import jdk.internal.jvmci.meta.*;
028
029import com.oracle.graal.graph.*;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.phases.common.inlining.info.elem.*;
032import com.oracle.graal.phases.util.*;
033
034/**
035 * Represents an inlining opportunity where the compiler can statically determine a monomorphic
036 * target method and therefore is able to determine the called method exactly.
037 */
038public class ExactInlineInfo extends AbstractInlineInfo {
039
040    protected final ResolvedJavaMethod concrete;
041    private Inlineable inlineableElement;
042    private boolean suppressNullCheck;
043
044    public ExactInlineInfo(Invoke invoke, ResolvedJavaMethod concrete) {
045        super(invoke);
046        this.concrete = concrete;
047        assert concrete != null;
048    }
049
050    public void suppressNullCheck() {
051        suppressNullCheck = true;
052    }
053
054    @Override
055    public Collection<Node> inline(Providers providers) {
056        return inline(invoke, concrete, inlineableElement, !suppressNullCheck);
057    }
058
059    @Override
060    public void tryToDevirtualizeInvoke(Providers providers) {
061        // nothing todo, can already be bound statically
062    }
063
064    @Override
065    public int numberOfMethods() {
066        return 1;
067    }
068
069    @Override
070    public ResolvedJavaMethod methodAt(int index) {
071        assert index == 0;
072        return concrete;
073    }
074
075    @Override
076    public double probabilityAt(int index) {
077        assert index == 0;
078        return 1.0;
079    }
080
081    @Override
082    public double relevanceAt(int index) {
083        assert index == 0;
084        return 1.0;
085    }
086
087    @Override
088    public String toString() {
089        return "exact " + concrete.format("%H.%n(%p):%r");
090    }
091
092    @Override
093    public Inlineable inlineableElementAt(int index) {
094        assert index == 0;
095        return inlineableElement;
096    }
097
098    @Override
099    public void setInlinableElement(int index, Inlineable inlineableElement) {
100        assert index == 0;
101        this.inlineableElement = inlineableElement;
102    }
103
104    public boolean shouldInline() {
105        return concrete.shouldBeInlined();
106    }
107}