c1_LinearScan_sparc.hpp revision 3718:b9a9ed0f8eeb 
1/*
2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP
26#define CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP
27
28inline bool LinearScan::is_processed_reg_num(int reg_num) {
29  return reg_num < 26 || reg_num > 31;
30}
31
32inline int LinearScan::num_physical_regs(BasicType type) {
33  // Sparc requires two cpu registers for long
34  // and two cpu registers for double
35#ifdef _LP64
36  if (type == T_DOUBLE) {
37#else
38  if (type == T_DOUBLE || type == T_LONG) {
39#endif
40    return 2;
41  }
42  return 1;
43}
44
45
46inline bool LinearScan::requires_adjacent_regs(BasicType type) {
47#ifdef _LP64
48  return type == T_DOUBLE;
49#else
50  return type == T_DOUBLE || type == T_LONG;
51#endif
52}
53
54inline bool LinearScan::is_caller_save(int assigned_reg) {
55  return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg;
56}
57
58
59inline void LinearScan::pd_add_temps(LIR_Op* op) {
60  // No special case behaviours yet
61}
62
63
64inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
65  if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) {
66    assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
67    _first_reg = pd_first_callee_saved_reg;
68    _last_reg = pd_last_callee_saved_reg;
69    return true;
70  } else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT || cur->type() == T_ADDRESS || cur->type() == T_METADATA) {
71    _first_reg = pd_first_cpu_reg;
72    _last_reg = pd_last_allocatable_cpu_reg;
73    return true;
74  }
75  return false;
76}
77
78#endif // CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP
79