/*

 * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP

#define CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP

inline bool LinearScan::is_processed_reg_num(int reg_num) {

  return reg_num < pd_nof_cpu_regs_processed_in_linearscan ||

         reg_num >= pd_nof_cpu_regs_frame_map;

}

inline int LinearScan::num_physical_regs(BasicType type) {

#ifndef AARCH64

  if (type == T_LONG || type == T_DOUBLE) return 2;

#endif // !AARCH64

  return 1;

}

inline bool LinearScan::requires_adjacent_regs(BasicType type) {

#ifdef AARCH64

  return false;

#else

  return type == T_DOUBLE || type == T_LONG;

#endif // AARCH64

}

inline bool LinearScan::is_caller_save(int assigned_reg) {

  assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers");

  // TODO-AARCH64 try to add callee-saved registers

  return true;

}

inline void LinearScan::pd_add_temps(LIR_Op* op) {

  // No extra temporals on ARM

}

// Implementation of LinearScanWalker

inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {

#ifndef __SOFTFP__

  if (cur->type() == T_FLOAT || cur->type() == T_DOUBLE) {

    _first_reg = pd_first_fpu_reg;

    _last_reg = pd_first_fpu_reg + pd_nof_fpu_regs_reg_alloc - 1;

    return true;

  }

#endif // !__SOFTFP__

  // Use allocatable CPU registers otherwise

  _first_reg = pd_first_cpu_reg;

  _last_reg = pd_first_cpu_reg + FrameMap::adjust_reg_range(pd_nof_cpu_regs_reg_alloc) - 1;

  return true;

}

#endif // CPU_ARM_VM_C1_LINEARSCAN_ARM_HPP