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/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2016 SAP SE. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef CPU_S390_VM_C1_LINEARSCAN_S390_HPP
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#define CPU_S390_VM_C1_LINEARSCAN_S390_HPP
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inline bool LinearScan::is_processed_reg_num(int reg_num) {
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// unallocated: Z_thread, Z_fp, Z_SP, Z_R0_scratch, Z_R1_scratch, Z_R14
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assert(FrameMap::Z_R14_opr->cpu_regnr() == 10, "wrong assumption below");
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assert(FrameMap::Z_R0_opr->cpu_regnr() == 11, "wrong assumption below");
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assert(FrameMap::Z_R1_opr->cpu_regnr() == 12, "wrong assumption below");
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assert(FrameMap::Z_R8_opr->cpu_regnr() == 13, "wrong assumption below");
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assert(FrameMap::Z_R9_opr->cpu_regnr() == 14, "wrong assumption below");
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assert(FrameMap::Z_R15_opr->cpu_regnr() == 15, "wrong assumption below");
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assert(reg_num >= 0, "invalid reg_num");
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return reg_num <= FrameMap::last_cpu_reg() || reg_num >= pd_nof_cpu_regs_frame_map;
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}
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inline int LinearScan::num_physical_regs(BasicType type) {
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// IBM Z requires one cpu registers for long,
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// and one fpu register for double.
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return 1;
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}
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inline bool LinearScan::requires_adjacent_regs(BasicType type) {
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return false;
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}
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inline bool LinearScan::is_caller_save(int assigned_reg) {
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assert(assigned_reg >= 0 && assigned_reg < nof_regs, "should call this only for registers");
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return true; // No callee-saved registers on IBM Z.
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}
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inline void LinearScan::pd_add_temps(LIR_Op* op) {
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// No special case behaviours.
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}
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inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
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return false; // No special case behaviours.
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}
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#endif // CPU_S390_VM_C1_LINEARSCAN_S390_HPP
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