text: /*
   * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2016 SAP SE. 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
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
  #ifndef CPU_S390_VM_C1_LINEARSCAN_S390_HPP
  #define CPU_S390_VM_C1_LINEARSCAN_S390_HPP
  
  inline bool LinearScan::is_processed_reg_num(int reg_num) {
    // unallocated: Z_thread, Z_fp, Z_SP, Z_R0_scratch, Z_R1_scratch, Z_R14
    assert(FrameMap::Z_R14_opr->cpu_regnr() == 10, "wrong assumption below");
    assert(FrameMap::Z_R0_opr->cpu_regnr()  == 11, "wrong assumption below");
    assert(FrameMap::Z_R1_opr->cpu_regnr()  == 12, "wrong assumption below");
    assert(FrameMap::Z_R8_opr->cpu_regnr()  == 13, "wrong assumption below");
    assert(FrameMap::Z_R9_opr->cpu_regnr()  == 14, "wrong assumption below");
    assert(FrameMap::Z_R15_opr->cpu_regnr() == 15, "wrong assumption below");
    assert(reg_num >= 0, "invalid reg_num");
    return reg_num <= FrameMap::last_cpu_reg() || reg_num >= pd_nof_cpu_regs_frame_map;
  }
  
  inline int LinearScan::num_physical_regs(BasicType type) {
    // IBM Z requires one cpu registers for long,
    // and one fpu register for double.
    return 1;
  }
  
  inline bool LinearScan::requires_adjacent_regs(BasicType type) {
    return false;
  }
  
  inline bool LinearScan::is_caller_save(int assigned_reg) {
    assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers");
    return true; // No callee-saved registers on IBM Z.
  }
  
  inline void LinearScan::pd_add_temps(LIR_Op* op) {
    // No special case behaviours.
  }
  
  inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
    return false; // No special case behaviours.
  }
  
  #endif // CPU_S390_VM_C1_LINEARSCAN_S390_HPP
  