Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeStream.cpp @ 487:80206b8a9128
6758234: if (k cond (a ? : b: c)) returns reversed answer if k is constant and b and c are longs
Reviewed-by: kvn, jrose
author | never |
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date | Fri, 12 Dec 2008 19:55:26 -0800 |
parents | c7ec737733a6 |
children | ad8c8ca4ab0f |
rev | line source |
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0 | 1 /* |
2 * Copyright 1997-2005 Sun Microsystems, Inc. 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. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_bytecodeStream.cpp.incl" | |
27 | |
28 Bytecodes::Code RawBytecodeStream::raw_next_special(Bytecodes::Code code) { | |
29 assert(!is_last_bytecode(), "should have been checked"); | |
30 // set next bytecode position | |
413
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31 address bcp = RawBytecodeStream::bcp(); |
c7ec737733a6
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32 address end = method()->code_base() + end_bci(); |
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33 int l = Bytecodes::raw_special_length_at(bcp, end); |
0 | 34 if (l <= 0 || (_bci + l) > _end_bci) { |
35 code = Bytecodes::_illegal; | |
36 } else { | |
37 _next_bci += l; | |
38 assert(_bci < _next_bci, "length must be > 0"); | |
39 // set attributes | |
40 _is_wide = false; | |
41 // check for special (uncommon) cases | |
42 if (code == Bytecodes::_wide) { | |
413
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43 if (bcp + 1 >= end) { |
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44 code = Bytecodes::_illegal; |
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45 } else { |
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46 code = (Bytecodes::Code)bcp[1]; |
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47 _is_wide = true; |
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48 } |
0 | 49 } |
50 } | |
51 _code = code; | |
52 return code; | |
53 } |