Mercurial > hg > truffle
annotate src/share/vm/code/vmreg.cpp @ 145:f3de1255b035
6603011: RFE: Optimize long division
Summary: Transform long division by constant into multiply
Reviewed-by: never, kvn
author | rasbold |
---|---|
date | Wed, 07 May 2008 08:06:46 -0700 |
parents | c7c777385a15 |
children | d1605aabd0a1 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1998-2007 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/_vmreg.cpp.incl" | |
27 | |
28 // First VMReg value that could refer to a stack slot | |
29 VMReg VMRegImpl::stack0 = (VMReg)(intptr_t)((ConcreteRegisterImpl::number_of_registers + 1) & ~1); | |
30 | |
31 // VMRegs are 4 bytes wide on all platforms | |
32 const int VMRegImpl::stack_slot_size = 4; | |
33 const int VMRegImpl::slots_per_word = wordSize / stack_slot_size; | |
34 | |
35 const int VMRegImpl::register_count = ConcreteRegisterImpl::number_of_registers; | |
36 // Register names | |
37 const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers]; | |
38 | |
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
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39 void VMRegImpl::print_on(outputStream* st) const { |
0 | 40 if( is_reg() ) { |
41 assert( VMRegImpl::regName[value()], "" ); | |
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
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42 st->print("%s",VMRegImpl::regName[value()]); |
0 | 43 } else if (is_stack()) { |
44 int stk = value() - stack0->value(); | |
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
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45 st->print("[%d]", stk*4); |
0 | 46 } else { |
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
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47 st->print("BAD!"); |
0 | 48 } |
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
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49 } |