1 /*
2 * Copyright (c) 2024, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package jdk.incubator.code.bytecode;
26
27 import java.lang.classfile.TypeKind;
28
29 import jdk.incubator.code.*;
30 import jdk.incubator.code.extern.ExternalizedOp;
31 import jdk.incubator.code.dialect.java.JavaType;
32 import jdk.incubator.code.dialect.java.PrimitiveType;
33 import jdk.incubator.code.internal.OpDeclaration;
34
35 import java.util.List;
36 import java.util.Map;
37
38 sealed abstract class SlotOp extends Op {
39 public static final String ATTRIBUTE_SLOT = "slot";
40
41 public static SlotLoadOp load(int slot, TypeKind tk) {
42 return new SlotLoadOp(slot, switch (tk) {
43 case INT -> UnresolvedType.unresolvedInt();
44 case REFERENCE -> UnresolvedType.unresolvedRef();
45 case LONG -> JavaType.LONG;
46 case DOUBLE -> JavaType.DOUBLE;
47 case FLOAT -> JavaType.FLOAT;
48 default -> throw new IllegalStateException("Unexpected load instruction type: " + tk);
49 });
50 }
51
52 public static SlotStoreOp store(int slot, Value v) {
53 return new SlotStoreOp(slot, v);
54 }
55
56 final int slot;
57
58 protected SlotOp(SlotOp that, CopyContext cc) {
59 super(that, cc);
60 this.slot = that.slot;
61 }
62
63 protected SlotOp(String name, List<? extends Value> operands, int slot) {
64 super(name, operands);
65 this.slot = slot;
66 }
67
68 public int slot() {
69 return slot;
70 }
71
72 public abstract TypeKind typeKind();
73
74 @Override
75 public Map<String, Object> externalize() {
76 return Map.of("", slot);
77 }
78
79 @OpDeclaration(SlotLoadOp.NAME)
80 public static final class SlotLoadOp extends SlotOp {
81 public static final String NAME = "slot.load";
82
83 final TypeElement resultType;
84
85 public SlotLoadOp(ExternalizedOp def) {
86 int slot = def.extractAttributeValue(ATTRIBUTE_SLOT, true,
87 v -> switch (v) {
88 case String s -> Integer.parseInt(s);
89 case Integer i -> i;
90 default -> throw new UnsupportedOperationException("Unsupported slot value:" + v);
91 });
92 this(slot, def.resultType());
93 }
94
95 SlotLoadOp(SlotLoadOp that, CopyContext cc) {
96 super(that, cc);
97 this.resultType = that.resultType;
98 }
99
100 @Override
101 public SlotLoadOp transform(CopyContext cc, OpTransformer ot) {
102 return new SlotLoadOp(this, cc);
103 }
104
105 SlotLoadOp(int slot, TypeElement resultType) {
106 super(NAME, List.of(), slot);
107 this.resultType = resultType;
108 }
109
110 @Override
111 public TypeElement resultType() {
112 return resultType;
113 }
114
115 @Override
116 public TypeKind typeKind() {
117 return toTypeKind(resultType);
118 }
119
120 @Override
121 public String toString() {
122 return "block_" + ancestorBlock().index() + " " + ancestorBlock().ops().indexOf(this) + ": #" + slot + " LOAD " + typeKind();
123 }
124 }
125
126 @OpDeclaration(SlotStoreOp.NAME)
127 public static final class SlotStoreOp extends SlotOp {
128 public static final String NAME = "slot.store";
129
130 public SlotStoreOp(ExternalizedOp def) {
131 int slot = def.extractAttributeValue(ATTRIBUTE_SLOT, true,
132 v -> switch (v) {
133 case String s -> Integer.parseInt(s);
134 case Integer i -> i;
135 default -> throw new UnsupportedOperationException("Unsupported slot value:" + v);
136 });
137 this(slot, def.operands().getFirst());
138 }
139
140 SlotStoreOp(SlotStoreOp that, CopyContext cc) {
141 super(that, cc);
142 }
143
144 @Override
145 public SlotStoreOp transform(CopyContext cc, OpTransformer ot) {
146 return new SlotStoreOp(this, cc);
147 }
148
149 SlotStoreOp(int slot, Value v) {
150 super(NAME, List.of(v), slot);
151 }
152
153 @Override
154 public TypeElement resultType() {
155 return JavaType.VOID;
156 }
157
158 @Override
159 public TypeKind typeKind() {
160 return toTypeKind(operands().getFirst().type());
161 }
162
163 @Override
164 public String toString() {
165 return "block_" + ancestorBlock().index() + " " + ancestorBlock().ops().indexOf(this) + ": #" + slot + " STORE " + typeKind();
166 }
167 }
168
169 private static TypeKind toTypeKind(TypeElement type) {
170 return switch (type) {
171 case UnresolvedType.Int _ ->
172 TypeKind.INT;
173 case PrimitiveType pt ->
174 TypeKind.from(pt.toNominalDescriptor()).asLoadable();
175 default ->
176 TypeKind.REFERENCE;
177 };
178 }
179 }