Thu, 12 Mar 2009 10:37:46 -0700
6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp
1 /*
2 * Copyright 2006-2007 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.
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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
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23 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_vmreg_sparc.cpp.incl"
30 void VMRegImpl::set_regName() {
31 Register reg = ::as_Register(0);
32 int i;
33 for (i = 0; i < ConcreteRegisterImpl::max_gpr ; ) {
34 regName[i++ ] = reg->name();
35 regName[i++ ] = reg->name();
36 reg = reg->successor();
37 }
39 FloatRegister freg = ::as_FloatRegister(0);
40 for ( ; i < ConcreteRegisterImpl::max_fpr ; ) {
41 regName[i++] = freg->name();
42 if (freg->encoding() > 31) {
43 regName[i++] = freg->name();
44 }
45 freg = freg->successor();
46 }
48 for ( ; i < ConcreteRegisterImpl::number_of_registers ; i ++ ) {
49 regName[i] = "NON-GPR-FPR";
50 }
51 }