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comparison src/share/vm/runtime/stubRoutines.hpp @ 1174:ddb7834449d0

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6849984: Value methods for platform dependent math functions constant fold incorrectly Reviewed-by: kvn, twisti
author never
date Fri, 15 Jan 2010 11:53:33 -0800
parents f8236e79048a
children c18cbe5936b8
comparison
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1173:73b22f919c34 1174:ddb7834449d0
1 /* 1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2010 Sun Microsystems, Inc. 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.
146 // these are recommended but optional: 146 // these are recommended but optional:
147 static address _checkcast_arraycopy; 147 static address _checkcast_arraycopy;
148 static address _unsafe_arraycopy; 148 static address _unsafe_arraycopy;
149 static address _generic_arraycopy; 149 static address _generic_arraycopy;
150 150
151 // These are versions of the java.lang.Math methods which perform
152 // the same operations as the intrinsic version. They are used for
153 // constant folding in the compiler to ensure equivalence. If the
154 // intrinsic version returns the same result as the strict version
155 // then they can be set to the appropriate function from
156 // SharedRuntime.
157 static double (*_intrinsic_log)(double);
158 static double (*_intrinsic_log10)(double);
159 static double (*_intrinsic_exp)(double);
160 static double (*_intrinsic_pow)(double, double);
161 static double (*_intrinsic_sin)(double);
162 static double (*_intrinsic_cos)(double);
163 static double (*_intrinsic_tan)(double);
164
151 public: 165 public:
152 // Initialization/Testing 166 // Initialization/Testing
153 static void initialize1(); // must happen before universe::genesis 167 static void initialize1(); // must happen before universe::genesis
154 static void initialize2(); // must happen after universe::genesis 168 static void initialize2(); // must happen after universe::genesis
155 169
243 257
244 static address checkcast_arraycopy() { return _checkcast_arraycopy; } 258 static address checkcast_arraycopy() { return _checkcast_arraycopy; }
245 static address unsafe_arraycopy() { return _unsafe_arraycopy; } 259 static address unsafe_arraycopy() { return _unsafe_arraycopy; }
246 static address generic_arraycopy() { return _generic_arraycopy; } 260 static address generic_arraycopy() { return _generic_arraycopy; }
247 261
262 static double intrinsic_log(double d) {
263 assert(_intrinsic_log != NULL, "must be defined");
264 return _intrinsic_log(d);
265 }
266 static double intrinsic_log10(double d) {
267 assert(_intrinsic_log != NULL, "must be defined");
268 return _intrinsic_log10(d);
269 }
270 static double intrinsic_exp(double d) {
271 assert(_intrinsic_exp != NULL, "must be defined");
272 return _intrinsic_exp(d);
273 }
274 static double intrinsic_pow(double d, double d2) {
275 assert(_intrinsic_pow != NULL, "must be defined");
276 return _intrinsic_pow(d, d2);
277 }
278 static double intrinsic_sin(double d) {
279 assert(_intrinsic_sin != NULL, "must be defined");
280 return _intrinsic_sin(d);
281 }
282 static double intrinsic_cos(double d) {
283 assert(_intrinsic_cos != NULL, "must be defined");
284 return _intrinsic_cos(d);
285 }
286 static double intrinsic_tan(double d) {
287 assert(_intrinsic_tan != NULL, "must be defined");
288 return _intrinsic_tan(d);
289 }
290
248 // 291 //
249 // Default versions of the above arraycopy functions for platforms which do 292 // Default versions of the above arraycopy functions for platforms which do
250 // not have specialized versions 293 // not have specialized versions
251 // 294 //
252 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); 295 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count);