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comparison graal/com.oracle.max.cri/src/com/sun/cri/ci/CiConstant.java @ 4182:de7b3e7ae528

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Simplify CiValue
author Christian Wimmer <Christian.Wimmer@Oracle.com>
date Mon, 02 Jan 2012 14:38:17 -0800
parents f5328dda9714
children
comparison
equal deleted inserted replaced
4181:319860ae697a 4182:de7b3e7ae528
1 /* 1 /*
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
26 * Represents a constant (boxed) value, such as an integer, floating point number, or object reference, 26 * Represents a constant (boxed) value, such as an integer, floating point number, or object reference,
27 * within the compiler and across the compiler/runtime interface. Exports a set of {@code CiConstant} 27 * within the compiler and across the compiler/runtime interface. Exports a set of {@code CiConstant}
28 * instances that represent frequently used constant values, such as {@link #ZERO}. 28 * instances that represent frequently used constant values, such as {@link #ZERO}.
29 */ 29 */
30 public final class CiConstant extends CiValue { 30 public final class CiConstant extends CiValue {
31
32 /**
33 *
34 */
35 private static final long serialVersionUID = -6355452536852663986L; 31 private static final long serialVersionUID = -6355452536852663986L;
32
36 private static final CiConstant[] INT_CONSTANT_CACHE = new CiConstant[100]; 33 private static final CiConstant[] INT_CONSTANT_CACHE = new CiConstant[100];
37 static { 34 static {
38 for (int i = 0; i < INT_CONSTANT_CACHE.length; ++i) { 35 for (int i = 0; i < INT_CONSTANT_CACHE.length; ++i) {
39 INT_CONSTANT_CACHE[i] = new CiConstant(CiKind.Int, i); 36 INT_CONSTANT_CACHE[i] = new CiConstant(CiKind.Int, i);
40 } 37 }
305 * @return {@code true} if this constant is equivalent to the specified object 302 * @return {@code true} if this constant is equivalent to the specified object
306 */ 303 */
307 @Override 304 @Override
308 public boolean equals(Object o) { 305 public boolean equals(Object o) {
309 return o == this || o instanceof CiConstant && valueEqual((CiConstant) o, false); 306 return o == this || o instanceof CiConstant && valueEqual((CiConstant) o, false);
310 }
311
312 @Override
313 public boolean equalsIgnoringKind(CiValue o) {
314 return o == this || o instanceof CiConstant && valueEqual((CiConstant) o, true);
315 } 307 }
316 308
317 /** 309 /**
318 * Checks whether this constant is identical to another constant or has the same value as it. 310 * Checks whether this constant is identical to another constant or has the same value as it.
319 * @param other the constant to compare for equality against this constant 311 * @param other the constant to compare for equality against this constant