1 /*
2 * Copyright (c) 1998, 2024, 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 *
194 // Return true if single stack based "register" where the slot alignment matches input alignment
195 bool is_adjacent_on_stack(int alignment) const {
196 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
197 }
198
199 // Return true if single stack based "register" where the slot alignment matches input alignment
200 bool is_adjacent_aligned_on_stack(int alignment) const {
201 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
202 }
203
204 // Return true if single register but adjacent stack slots do not count
205 bool is_single_phys_reg() const {
206 return (_first->is_reg() && (_first->value() + 1 == _second->value()));
207 }
208
209 VMReg second() const { return _second; }
210 VMReg first() const { return _first; }
211 VMRegPair(VMReg s, VMReg f) { _second = s; _first = f; }
212 VMRegPair(VMReg f) { _second = VMRegImpl::Bad(); _first = f; }
213 VMRegPair() { _second = VMRegImpl::Bad(); _first = VMRegImpl::Bad(); }
214 };
215
216 #endif // SHARE_CODE_VMREG_HPP
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1 /*
2 * Copyright (c) 1998, 2026, 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 *
194 // Return true if single stack based "register" where the slot alignment matches input alignment
195 bool is_adjacent_on_stack(int alignment) const {
196 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
197 }
198
199 // Return true if single stack based "register" where the slot alignment matches input alignment
200 bool is_adjacent_aligned_on_stack(int alignment) const {
201 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
202 }
203
204 // Return true if single register but adjacent stack slots do not count
205 bool is_single_phys_reg() const {
206 return (_first->is_reg() && (_first->value() + 1 == _second->value()));
207 }
208
209 VMReg second() const { return _second; }
210 VMReg first() const { return _first; }
211 VMRegPair(VMReg s, VMReg f) { _second = s; _first = f; }
212 VMRegPair(VMReg f) { _second = VMRegImpl::Bad(); _first = f; }
213 VMRegPair() { _second = VMRegImpl::Bad(); _first = VMRegImpl::Bad(); }
214
215 void print_on(outputStream* st) const;
216 };
217
218 #endif // SHARE_CODE_VMREG_HPP
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