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/*
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* Copyright 2005-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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inline bool LinearScan::is_processed_reg_num(int reg_num) {
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return reg_num < 26 || reg_num > 31;
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}
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inline int LinearScan::num_physical_regs(BasicType type) {
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// Sparc requires two cpu registers for long
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// and two cpu registers for double
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#ifdef _LP64
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if (type == T_DOUBLE) {
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#else
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if (type == T_DOUBLE || type == T_LONG) {
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#endif
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return 2;
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}
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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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#ifdef _LP64
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return type == T_DOUBLE;
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#else
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return type == T_DOUBLE || type == T_LONG;
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#endif
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}
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inline bool LinearScan::is_caller_save(int assigned_reg) {
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return assigned_reg > pd_last_callee_saved_reg && assigned_reg <= pd_last_fpu_reg;
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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 yet
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}
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inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
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if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::callee_saved)) {
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assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
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_first_reg = pd_first_callee_saved_reg;
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_last_reg = pd_last_callee_saved_reg;
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return true;
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} else if (cur->type() == T_INT || cur->type() == T_LONG || cur->type() == T_OBJECT) {
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_first_reg = pd_first_cpu_reg;
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_last_reg = pd_last_allocatable_cpu_reg;
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return true;
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}
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return false;
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}
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