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1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 2016 SAP SE. 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_S390_VM_C1_LINEARSCAN_S390_HPP |
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27 #define CPU_S390_VM_C1_LINEARSCAN_S390_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 // unallocated: Z_thread, Z_fp, Z_SP, Z_R0_scratch, Z_R1_scratch, Z_R14 |
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31 assert(FrameMap::Z_R14_opr->cpu_regnr() == 10, "wrong assumption below"); |
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32 assert(FrameMap::Z_R0_opr->cpu_regnr() == 11, "wrong assumption below"); |
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33 assert(FrameMap::Z_R1_opr->cpu_regnr() == 12, "wrong assumption below"); |
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34 assert(FrameMap::Z_R8_opr->cpu_regnr() == 13, "wrong assumption below"); |
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35 assert(FrameMap::Z_R9_opr->cpu_regnr() == 14, "wrong assumption below"); |
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36 assert(FrameMap::Z_R15_opr->cpu_regnr() == 15, "wrong assumption below"); |
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37 assert(reg_num >= 0, "invalid reg_num"); |
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38 return reg_num <= FrameMap::last_cpu_reg() || reg_num >= pd_nof_cpu_regs_frame_map; |
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39 } |
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40 |
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41 inline int LinearScan::num_physical_regs(BasicType type) { |
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42 // IBM Z requires one cpu registers for long, |
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43 // and one fpu register for double. |
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44 return 1; |
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45 } |
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46 |
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47 inline bool LinearScan::requires_adjacent_regs(BasicType type) { |
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48 return false; |
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49 } |
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50 |
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51 inline bool LinearScan::is_caller_save(int assigned_reg) { |
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52 assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers"); |
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53 return true; // No callee-saved registers on IBM Z. |
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54 } |
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55 |
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56 inline void LinearScan::pd_add_temps(LIR_Op* op) { |
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57 // No special case behaviours. |
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58 } |
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59 |
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60 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) { |
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61 return false; // No special case behaviours. |
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62 } |
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63 |
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64 #endif // CPU_S390_VM_C1_LINEARSCAN_S390_HPP |