1 /* 2 * Copyright (c) 2008, 2014, 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_ARM_VM_C1_LINEARSCAN_ARM_HPP 26 #define CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP 27 28 inline bool LinearScan::is_processed_reg_num(int reg_num) { 29 return reg_num < pd_nof_cpu_regs_processed_in_linearscan || 30 reg_num >= pd_nof_cpu_regs_frame_map; 31 } 32 33 inline int LinearScan::num_physical_regs(BasicType type) { 34 #ifndef AARCH64 35 if (type == T_LONG || type == T_DOUBLE) return 2; 36 #endif // !AARCH64 37 return 1; 38 } 39 40 41 inline bool LinearScan::requires_adjacent_regs(BasicType type) { 42 #ifdef AARCH64 43 return false; 44 #else 45 return type == T_DOUBLE || type == T_LONG; 46 #endif // AARCH64 47 } 48 49 inline bool LinearScan::is_caller_save(int assigned_reg) { 50 assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers"); 51 // TODO-AARCH64 try to add callee-saved registers 52 return true; 53 } 54 55 56 inline void LinearScan::pd_add_temps(LIR_Op* op) { 57 // No extra temporals on ARM 58 } 59 60 61 // Implementation of LinearScanWalker 62 63 inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) { 64 #ifndef __SOFTFP__ 65 if (cur->type() == T_FLOAT || cur->type() == T_DOUBLE) { 66 _first_reg = pd_first_fpu_reg; 67 _last_reg = pd_first_fpu_reg + pd_nof_fpu_regs_reg_alloc - 1; 68 return true; 69 } 70 #endif // !__SOFTFP__ 71 72 // Use allocatable CPU registers otherwise 73 _first_reg = pd_first_cpu_reg; 74 _last_reg = pd_first_cpu_reg + FrameMap::adjust_reg_range(pd_nof_cpu_regs_reg_alloc) - 1; 75 return true; 76 } 77 78 #endif // CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP