1 /*
2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
27 package org.graalvm.compiler.replacements.aarch64;
28
29 import org.graalvm.compiler.api.replacements.Snippet;
30 import org.graalvm.compiler.api.replacements.Snippet.ConstantParameter;
31 import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;
32 import org.graalvm.compiler.core.common.type.IntegerStamp;
33 import org.graalvm.compiler.debug.DebugHandlersFactory;
34 import org.graalvm.compiler.debug.GraalError;
35 import org.graalvm.compiler.graph.Node.NodeIntrinsic;
36 import org.graalvm.compiler.graph.NodeClass;
37 import org.graalvm.compiler.nodeinfo.NodeInfo;
38 import org.graalvm.compiler.nodes.DeoptimizeNode;
39 import org.graalvm.compiler.nodes.NodeView;
40 import org.graalvm.compiler.nodes.StructuredGraph;
41 import org.graalvm.compiler.nodes.ValueNode;
42 import org.graalvm.compiler.nodes.calc.IntegerDivRemNode;
43 import org.graalvm.compiler.nodes.calc.SignedDivNode;
44 import org.graalvm.compiler.nodes.calc.SignedRemNode;
45 import org.graalvm.compiler.nodes.calc.UnsignedDivNode;
46 import org.graalvm.compiler.nodes.calc.UnsignedRemNode;
47 import org.graalvm.compiler.nodes.spi.LoweringTool;
48 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
49 import org.graalvm.compiler.options.OptionValues;
50 import org.graalvm.compiler.phases.util.Providers;
51 import org.graalvm.compiler.replacements.SnippetTemplate;
52 import org.graalvm.compiler.replacements.SnippetTemplate.AbstractTemplates;
53 import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;
54 import org.graalvm.compiler.replacements.Snippets;
55
56 import jdk.vm.ci.code.TargetDescription;
57 import jdk.vm.ci.meta.DeoptimizationAction;
58 import jdk.vm.ci.meta.DeoptimizationReason;
59 import jdk.vm.ci.meta.JavaKind;
60
61 /**
62 * Division in AArch64 ISA does not generate a trap when dividing by zero, but instead sets the
63 * result to 0. These snippets throw an ArithmethicException if the denominator is 0 and otherwise
64 * forward to the LIRGenerator.
65 */
66 public class AArch64IntegerArithmeticSnippets extends AbstractTemplates implements Snippets {
166 return safeUDiv(x, y);
167 }
168
169 @Snippet
170 public static int uiremSnippet(int x, int y, @ConstantParameter boolean needsZeroCheck) {
171 if (needsZeroCheck) {
172 checkForZero(y);
173 }
174 return safeURem(x, y);
175 }
176
177 @Snippet
178 public static long ulremSnippet(long x, long y, @ConstantParameter boolean needsZeroCheck) {
179 if (needsZeroCheck) {
180 checkForZero(y);
181 }
182 return safeURem(x, y);
183 }
184
185 private static void checkForZero(int y) {
186 if (y == 0) {
187 // "/ by zero"
188 DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException);
189 }
190 }
191
192 private static void checkForZero(long y) {
193 if (y == 0) {
194 // "/ by zero"
195 DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException);
196 }
197 }
198
199 @NodeIntrinsic(SafeSignedDivNode.class)
200 private static native int safeDiv(int x, int y);
201
202 @NodeIntrinsic(SafeSignedDivNode.class)
203 private static native long safeDiv(long x, long y);
204
205 @NodeIntrinsic(SafeSignedRemNode.class)
206 private static native int safeRem(int x, int y);
207
208 @NodeIntrinsic(SafeSignedRemNode.class)
209 private static native long safeRem(long x, long y);
210
211 @NodeIntrinsic(SafeUnsignedDivNode.class)
212 private static native int safeUDiv(int x, int y);
213
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1 /*
2 * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
27 package org.graalvm.compiler.replacements.aarch64;
28
29 import org.graalvm.compiler.api.replacements.Snippet;
30 import org.graalvm.compiler.api.replacements.Snippet.ConstantParameter;
31 import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;
32 import org.graalvm.compiler.core.common.type.IntegerStamp;
33 import org.graalvm.compiler.debug.DebugHandlersFactory;
34 import org.graalvm.compiler.debug.GraalError;
35 import org.graalvm.compiler.graph.Node.NodeIntrinsic;
36 import org.graalvm.compiler.graph.NodeClass;
37 import org.graalvm.compiler.nodeinfo.NodeInfo;
38 import org.graalvm.compiler.nodes.DeoptimizeNode;
39 import org.graalvm.compiler.nodes.NodeView;
40 import org.graalvm.compiler.nodes.StructuredGraph;
41 import org.graalvm.compiler.nodes.ValueNode;
42 import org.graalvm.compiler.nodes.calc.IntegerDivRemNode;
43 import org.graalvm.compiler.nodes.calc.SignedDivNode;
44 import org.graalvm.compiler.nodes.calc.SignedRemNode;
45 import org.graalvm.compiler.nodes.calc.UnsignedDivNode;
46 import org.graalvm.compiler.nodes.calc.UnsignedRemNode;
47 import org.graalvm.compiler.nodes.extended.BranchProbabilityNode;
48 import org.graalvm.compiler.nodes.spi.LoweringTool;
49 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
50 import org.graalvm.compiler.options.OptionValues;
51 import org.graalvm.compiler.phases.util.Providers;
52 import org.graalvm.compiler.replacements.SnippetTemplate;
53 import org.graalvm.compiler.replacements.SnippetTemplate.AbstractTemplates;
54 import org.graalvm.compiler.replacements.SnippetTemplate.Arguments;
55 import org.graalvm.compiler.replacements.Snippets;
56
57 import jdk.vm.ci.code.TargetDescription;
58 import jdk.vm.ci.meta.DeoptimizationAction;
59 import jdk.vm.ci.meta.DeoptimizationReason;
60 import jdk.vm.ci.meta.JavaKind;
61
62 /**
63 * Division in AArch64 ISA does not generate a trap when dividing by zero, but instead sets the
64 * result to 0. These snippets throw an ArithmethicException if the denominator is 0 and otherwise
65 * forward to the LIRGenerator.
66 */
67 public class AArch64IntegerArithmeticSnippets extends AbstractTemplates implements Snippets {
167 return safeUDiv(x, y);
168 }
169
170 @Snippet
171 public static int uiremSnippet(int x, int y, @ConstantParameter boolean needsZeroCheck) {
172 if (needsZeroCheck) {
173 checkForZero(y);
174 }
175 return safeURem(x, y);
176 }
177
178 @Snippet
179 public static long ulremSnippet(long x, long y, @ConstantParameter boolean needsZeroCheck) {
180 if (needsZeroCheck) {
181 checkForZero(y);
182 }
183 return safeURem(x, y);
184 }
185
186 private static void checkForZero(int y) {
187 if (BranchProbabilityNode.probability(BranchProbabilityNode.DEOPT_PROBABILITY, y == 0)) {
188 // "/ by zero"
189 DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException);
190 }
191 }
192
193 private static void checkForZero(long y) {
194 if (BranchProbabilityNode.probability(BranchProbabilityNode.DEOPT_PROBABILITY, y == 0)) {
195 // "/ by zero"
196 DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.ArithmeticException);
197 }
198 }
199
200 @NodeIntrinsic(SafeSignedDivNode.class)
201 private static native int safeDiv(int x, int y);
202
203 @NodeIntrinsic(SafeSignedDivNode.class)
204 private static native long safeDiv(long x, long y);
205
206 @NodeIntrinsic(SafeSignedRemNode.class)
207 private static native int safeRem(int x, int y);
208
209 @NodeIntrinsic(SafeSignedRemNode.class)
210 private static native long safeRem(long x, long y);
211
212 @NodeIntrinsic(SafeUnsignedDivNode.class)
213 private static native int safeUDiv(int x, int y);
214
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