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src/cpu/sparc/vm/c1_LinearScan_sparc.hpp@ac637b7220d1 (annotated)
src/cpu/sparc/vm/c1_LinearScan_sparc.hpp
Tue, 30 Nov 2010 23:23:40 -0800
- author
- iveresov
- date
- Tue, 30 Nov 2010 23:23:40 -0800
- changeset 2344
- ac637b7220d1
- parent 2314
- f95d63e2154a
- child 4056
- 7edbe32b9802
- permissions
- -rw-r--r--
6985015: C1 needs to support compressed oops
Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.
Reviewed-by: twisti, kvn, never, phh
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP |
| stefank@2314 | 26 | #define CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP |
| stefank@2314 | 27 | |
| duke@435 | 28 | inline bool LinearScan::is_processed_reg_num(int reg_num) { |
| duke@435 | 29 | return reg_num < 26 || reg_num > 31; |
| duke@435 | 30 | } |
| duke@435 | 31 | |
| duke@435 | 32 | inline int LinearScan::num_physical_regs(BasicType type) { |
| duke@435 | 33 | // Sparc requires two cpu registers for long |
| duke@435 | 34 | // and two cpu registers for double |
| duke@435 | 35 | #ifdef _LP64 |
| duke@435 | 36 | if (type == T_DOUBLE) { |
| duke@435 | 37 | #else |
| duke@435 | 38 | if (type == T_DOUBLE || type == T_LONG) { |
| duke@435 | 39 | #endif |
| duke@435 | 40 | return 2; |
| duke@435 | 41 | } |
| duke@435 | 42 | return 1; |
| duke@435 | 43 | } |
| duke@435 | 44 | |
| duke@435 | 45 | |
| duke@435 | 46 | inline bool LinearScan::requires_adjacent_regs(BasicType type) { |
| duke@435 | 47 | #ifdef _LP64 |
| duke@435 | 48 | return type == T_DOUBLE; |
| duke@435 | 49 | #else |
| duke@435 | 50 | return type == T_DOUBLE || type == T_LONG; |
| duke@435 | 51 | #endif |
| duke@435 | 52 | } |
| duke@435 | 53 | |
| duke@435 | 54 | inline bool LinearScan::is_caller_save(int assigned_reg) { |
| duke@435 | 55 | return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg; |
| duke@435 | 56 | } |
| duke@435 | 57 | |
| duke@435 | 58 | |
| duke@435 | 59 | inline void LinearScan::pd_add_temps(LIR_Op* op) { |
| duke@435 | 60 | // No special case behaviours yet |
| duke@435 | 61 | } |
| duke@435 | 62 | |
| duke@435 | 63 | |
| duke@435 | 64 | inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) { |
| duke@435 | 65 | if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) { |
| duke@435 | 66 | assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only"); |
| duke@435 | 67 | _first_reg = pd_first_callee_saved_reg; |
| duke@435 | 68 | _last_reg = pd_last_callee_saved_reg; |
| duke@435 | 69 | return true; |
| roland@2206 | 70 | } else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT || cur->type() == T_ADDRESS) { |
| duke@435 | 71 | _first_reg = pd_first_cpu_reg; |
| duke@435 | 72 | _last_reg = pd_last_allocatable_cpu_reg; |
| duke@435 | 73 | return true; |
| duke@435 | 74 | } |
| duke@435 | 75 | return false; |
| duke@435 | 76 | } |
| stefank@2314 | 77 | |
| stefank@2314 | 78 | #endif // CPU_SPARC_VM_C1_LINEARSCAN_SPARC_HPP |
