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comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/utilities/BranchProfile.java @ 18510:cb4d5cc2b52b

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Truffle: clone ConditionProfile and BranchProfile node fields
author Andreas Woess <andreas.woess@jku.at>
date Tue, 25 Nov 2014 13:21:50 +0100
parents 87ea195b66ff
children 62aac33db669
comparison
equal deleted inserted replaced
18509:7bf2965140de 18510:cb4d5cc2b52b
24 */ 24 */
25 package com.oracle.truffle.api.utilities; 25 package com.oracle.truffle.api.utilities;
26 26
27 import com.oracle.truffle.api.*; 27 import com.oracle.truffle.api.*;
28 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal; 28 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
29 import com.oracle.truffle.api.nodes.*;
29 30
30 /** 31 /**
31 * Utility class to speculate on branches to be never visited. If the {@link #enter()} method is 32 * Utility class to speculate on branches to be never visited. If the {@link #enter()} method is
32 * invoked first the optimized code is invalidated and the branch where {@link #enter()} is invoked 33 * invoked first the optimized code is invalidated and the branch where {@link #enter()} is invoked
33 * is enabled for compilation. Otherwise if the {@link #enter()} method was never invoked the branch 34 * is enabled for compilation. Otherwise if the {@link #enter()} method was never invoked the branch
34 * will not get compiled. 35 * will not get compiled.
35 * 36 *
36 * All {@code BranchProfile} instances must be held in {@code final} fields for compiler 37 * All {@code BranchProfile} instances must be held in {@code final} fields for compiler
37 * optimizations to take effect. 38 * optimizations to take effect.
38 */ 39 */
39 public final class BranchProfile { 40 public final class BranchProfile implements NodeCloneable {
40 41
41 @CompilationFinal private boolean visited; 42 @CompilationFinal private boolean visited;
42 43
43 private BranchProfile() { 44 private BranchProfile() {
44 } 45 }
61 @Override 62 @Override
62 public String toString() { 63 public String toString() {
63 return String.format("%s(%s)@%x", getClass().getSimpleName(), visited ? "visited" : "not-visited", hashCode()); 64 return String.format("%s(%s)@%x", getClass().getSimpleName(), visited ? "visited" : "not-visited", hashCode());
64 } 65 }
65 66
67 @Override
68 public Object clone() {
69 try {
70 return super.clone();
71 } catch (CloneNotSupportedException e) {
72 throw new AssertionError(e);
73 }
74 }
66 } 75 }