//
// Copyright (c) 2018, Red Hat, Inc. All rights reserved.
//
// 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.
//
//
source_hpp %{
#include "gc/shenandoah/shenandoahBarrierSetAssembler.hpp"
#include "gc/shenandoah/c2/shenandoahSupport.hpp"
%}
instruct compareAndSwapP_shenandoah(rRegI res,
memory mem_ptr,
rRegP tmp1, rRegP tmp2,
rax_RegP oldval, rRegP newval,
rFlagsReg cr)
%{
predicate(VM_Version::supports_cx8());
match(Set res (ShenandoahCompareAndSwapP mem_ptr (Binary oldval newval)));
match(Set res (ShenandoahWeakCompareAndSwapP mem_ptr (Binary oldval newval)));
effect(TEMP tmp1, TEMP tmp2, KILL cr, KILL oldval);
format %{ "shenandoah_cas_oop $mem_ptr,$newval" %}
ins_encode %{
ShenandoahBarrierSet::assembler()->cmpxchg_oop(&_masm,
$res$$Register, $mem_ptr$$Address, $oldval$$Register, $newval$$Register,
false, // swap
$tmp1$$Register, $tmp2$$Register
);
%}
ins_pipe( pipe_cmpxchg );
%}
instruct compareAndSwapN_shenandoah(rRegI res,
memory mem_ptr,
rRegP tmp1, rRegP tmp2,
rax_RegN oldval, rRegN newval,
rFlagsReg cr) %{
match(Set res (ShenandoahCompareAndSwapN mem_ptr (Binary oldval newval)));
match(Set res (ShenandoahWeakCompareAndSwapN mem_ptr (Binary oldval newval)));
effect(TEMP tmp1, TEMP tmp2, KILL cr, KILL oldval);
format %{ "shenandoah_cas_oop $mem_ptr,$newval" %}
ins_encode %{
ShenandoahBarrierSet::assembler()->cmpxchg_oop(&_masm,
$res$$Register, $mem_ptr$$Address, $oldval$$Register, $newval$$Register,
false, // swap
$tmp1$$Register, $tmp2$$Register
);
%}
ins_pipe( pipe_cmpxchg );
%}
instruct compareAndExchangeN_shenandoah(memory mem_ptr,
rax_RegN oldval, rRegN newval,
rRegP tmp1, rRegP tmp2,
rFlagsReg cr) %{
match(Set oldval (ShenandoahCompareAndExchangeN mem_ptr (Binary oldval newval)));
effect(TEMP tmp1, TEMP tmp2, KILL cr);
format %{ "shenandoah_cas_oop $mem_ptr,$newval" %}
ins_encode %{
ShenandoahBarrierSet::assembler()->cmpxchg_oop(&_masm,
NULL, $mem_ptr$$Address, $oldval$$Register, $newval$$Register,
true, // exchange
$tmp1$$Register, $tmp2$$Register
);
%}
ins_pipe( pipe_cmpxchg );
%}
instruct compareAndExchangeP_shenandoah(memory mem_ptr,
rax_RegP oldval, rRegP newval,
rRegP tmp1, rRegP tmp2,
rFlagsReg cr)
%{
predicate(VM_Version::supports_cx8());
match(Set oldval (ShenandoahCompareAndExchangeP mem_ptr (Binary oldval newval)));
effect(KILL cr, TEMP tmp1, TEMP tmp2);
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