1/*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.phases.common.inlining.info;
24
25import java.util.Collection;
26
27import org.graalvm.compiler.graph.Node;
28import org.graalvm.compiler.nodes.Invoke;
29import org.graalvm.compiler.phases.common.inlining.info.elem.Inlineable;
30import org.graalvm.compiler.phases.util.Providers;
31
32import jdk.vm.ci.meta.ResolvedJavaMethod;
33
34/**
35 * Represents an inlining opportunity where the compiler can statically determine a monomorphic
36 * target method and therefore is able to determine the called method exactly.
37 */
38public class ExactInlineInfo extends AbstractInlineInfo {
39
40    protected final ResolvedJavaMethod concrete;
41    private Inlineable inlineableElement;
42    private boolean suppressNullCheck;
43
44    public ExactInlineInfo(Invoke invoke, ResolvedJavaMethod concrete) {
45        super(invoke);
46        this.concrete = concrete;
47        assert concrete != null;
48    }
49
50    public void suppressNullCheck() {
51        suppressNullCheck = true;
52    }
53
54    @Override
55    public Collection<Node> inline(Providers providers) {
56        return inline(invoke, concrete, inlineableElement, !suppressNullCheck);
57    }
58
59    @Override
60    public void tryToDevirtualizeInvoke(Providers providers) {
61        // nothing todo, can already be bound statically
62    }
63
64    @Override
65    public int numberOfMethods() {
66        return 1;
67    }
68
69    @Override
70    public ResolvedJavaMethod methodAt(int index) {
71        assert index == 0;
72        return concrete;
73    }
74
75    @Override
76    public double probabilityAt(int index) {
77        assert index == 0;
78        return 1.0;
79    }
80
81    @Override
82    public double relevanceAt(int index) {
83        assert index == 0;
84        return 1.0;
85    }
86
87    @Override
88    public String toString() {
89        return "exact " + concrete.format("%H.%n(%p):%r");
90    }
91
92    @Override
93    public Inlineable inlineableElementAt(int index) {
94        assert index == 0;
95        return inlineableElement;
96    }
97
98    @Override
99    public void setInlinableElement(int index, Inlineable inlineableElement) {
100        assert index == 0;
101        this.inlineableElement = inlineableElement;
102    }
103
104    @Override
105    public boolean shouldInline() {
106        return concrete.shouldBeInlined();
107    }
108}
109