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1 /* |
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2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 2014, Red Hat Inc. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #ifndef CPU_AARCH64_VM_C1_LINEARSCAN_HPP |
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27 #define CPU_AARCH64_VM_C1_LINEARSCAN_HPP |
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28 |
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29 inline bool LinearScan::is_processed_reg_num(int reg_num) { |
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30 return reg_num <= FrameMap::last_cpu_reg() || reg_num >= pd_nof_cpu_regs_frame_map; |
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31 } |
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32 |
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33 inline int LinearScan::num_physical_regs(BasicType type) { |
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34 return 1; |
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35 } |
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36 |
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37 |
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38 inline bool LinearScan::requires_adjacent_regs(BasicType type) { |
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39 return false; |
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40 } |
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41 |
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42 inline bool LinearScan::is_caller_save(int assigned_reg) { |
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43 assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers"); |
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44 if (assigned_reg < pd_first_callee_saved_reg) |
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45 return true; |
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46 if (assigned_reg > pd_last_callee_saved_reg && assigned_reg < pd_first_callee_saved_fpu_reg) |
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47 return true; |
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48 if (assigned_reg > pd_last_callee_saved_fpu_reg && assigned_reg < pd_last_fpu_reg) |
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49 return true; |
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50 return false; |
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51 } |
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52 |
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53 |
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54 inline void LinearScan::pd_add_temps(LIR_Op* op) { |
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55 // FIXME ?? |
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56 } |
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57 |
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58 |
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59 // Implementation of LinearScanWalker |
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60 |
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61 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) { |
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62 if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) { |
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63 assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only"); |
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64 _first_reg = pd_first_callee_saved_reg; |
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65 _last_reg = pd_last_callee_saved_reg; |
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66 return true; |
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67 } else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT || cur->type() == T_ADDRESS || cur->type() == T_METADATA) { |
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68 _first_reg = pd_first_cpu_reg; |
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69 _last_reg = pd_last_allocatable_cpu_reg; |
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70 return true; |
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71 } |
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72 return false; |
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73 } |
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74 |
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75 |
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76 #endif // CPU_AARCH64_VM_C1_LINEARSCAN_HPP |