Mercurial > hg > truffle
comparison src/cpu/sparc/vm/c1_LinearScan_sparc.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2005-2006 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 inline bool LinearScan::is_processed_reg_num(int reg_num) { | |
26 return reg_num < 26 || reg_num > 31; | |
27 } | |
28 | |
29 inline int LinearScan::num_physical_regs(BasicType type) { | |
30 // Sparc requires two cpu registers for long | |
31 // and two cpu registers for double | |
32 #ifdef _LP64 | |
33 if (type == T_DOUBLE) { | |
34 #else | |
35 if (type == T_DOUBLE || type == T_LONG) { | |
36 #endif | |
37 return 2; | |
38 } | |
39 return 1; | |
40 } | |
41 | |
42 | |
43 inline bool LinearScan::requires_adjacent_regs(BasicType type) { | |
44 #ifdef _LP64 | |
45 return type == T_DOUBLE; | |
46 #else | |
47 return type == T_DOUBLE || type == T_LONG; | |
48 #endif | |
49 } | |
50 | |
51 inline bool LinearScan::is_caller_save(int assigned_reg) { | |
52 return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg; | |
53 } | |
54 | |
55 | |
56 inline void LinearScan::pd_add_temps(LIR_Op* op) { | |
57 // No special case behaviours yet | |
58 } | |
59 | |
60 | |
61 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) { | |
62 if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) { | |
63 assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only"); | |
64 _first_reg = pd_first_callee_saved_reg; | |
65 _last_reg = pd_last_callee_saved_reg; | |
66 return true; | |
67 } else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT) { | |
68 _first_reg = pd_first_cpu_reg; | |
69 _last_reg = pd_last_allocatable_cpu_reg; | |
70 return true; | |
71 } | |
72 return false; | |
73 } |