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// or visit www.oracle.com if you need additional information or have any
// questions.
//
//
- source_hpp %{
+ source %{
#include "gc/shenandoah/shenandoahBarrierSet.hpp"
- #include "gc/shenandoah/shenandoahBarrierSetAssembler.hpp"
+ #include "gc/shenandoah/shenandoahBarrierSetAssembler_riscv.hpp"
+ #include "gc/shenandoah/c2/shenandoahBarrierSetC2.hpp"
%}
- instruct compareAndSwapP_shenandoah(iRegINoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahCompareAndSwapP mem (Binary oldval newval)));
- ins_cost(10 * DEFAULT_COST);
+ // Load Pointer
+ instruct loadP_shenandoah(iRegPNoSp dst, memory mem)
+ %{
+ match(Set dst (LoadP mem));
+ predicate(UseShenandoahGC && n->as_Load()->barrier_data() != 0);
- effect(TEMP tmp, KILL cr);
+ effect(TEMP_DEF dst);
+ ins_is_late_expanded_null_check_candidate(true);
- format %{
- "cmpxchg_shenandoah $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval with temp $tmp, #@compareAndSwapP_shenandoah"
+ ins_cost(3 * LOAD_COST);
+ format %{ "ld $dst, $mem\t# ptr, shenandoah late-barrier, #@loadP_shenandoah" %}
+
+ ins_encode %{
+ ShenandoahBarrierSet::assembler()->load_c2(this, masm, as_Register($dst$$reg),
+ Address(as_Register($mem$$base), $mem$$disp));
%}
+ ins_pipe(iload_reg_mem);
+ %}
+
+ // Load Compressed Pointer
+ instruct loadN_shenandoah(iRegNNoSp dst, memory mem)
+ %{
+ match(Set dst (LoadN mem));
+ predicate(UseShenandoahGC && n->as_Load()->barrier_data() != 0);
+
+ effect(TEMP_DEF dst);
+ ins_is_late_expanded_null_check_candidate(true);
+
+ ins_cost(3 * LOAD_COST);
+ format %{ "lwu $dst, $mem\t# compressed ptr, shenandoah late-barrier, #@loadN_shenandoah" %}
+
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->load_c2(this, masm, as_Register($dst$$reg),
+ Address(as_Register($mem$$base), $mem$$disp));
%}
- ins_pipe(pipe_slow);
+ ins_pipe(iload_reg_mem);
%}
- instruct compareAndSwapN_shenandoah(iRegINoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahCompareAndSwapN mem (Binary oldval newval)));
- ins_cost(10 * DEFAULT_COST);
+ // Store Pointer
+ instruct storeP_shenandoah(memory mem, iRegP src, iRegPNoSp tmp, rFlagsReg cr)
+ %{
+ match(Set mem (StoreP mem src));
+ predicate(UseShenandoahGC && n->as_Store()->barrier_data() != 0);
effect(TEMP tmp, KILL cr);
- format %{
- "cmpxchgw_shenandoah $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval with temp $tmp, #@compareAndSwapN_shenandoah"
- %}
+ ins_cost(3 * STORE_COST);
+ format %{ "sd $src, $mem\t# ptr, shenandoah late-barrier, #@storeP_shenandoah" %}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->store_c2(this, masm,
+ Address(as_Register($mem$$base), $mem$$disp),
+ /* dst_narrow = */ false,
+ as_Register($src$$reg),
+ /* src_narrow = */ false,
+ as_Register($tmp$$reg));
%}
- ins_pipe(pipe_slow);
+ ins_pipe(istore_reg_mem);
%}
- instruct compareAndSwapPAcq_shenandoah(iRegINoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahCompareAndSwapP mem (Binary oldval newval)));
- ins_cost(10 * DEFAULT_COST);
+ // Store Compressed Pointer
+ instruct storeN_shenandoah(memory mem, iRegN src, iRegNNoSp tmp, rFlagsReg cr)
+ %{
+ match(Set mem (StoreN mem src));
+ predicate(UseShenandoahGC && n->as_Store()->barrier_data() != 0);
effect(TEMP tmp, KILL cr);
- format %{
- "cmpxchg_acq_shenandoah_oop $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval with temp $tmp, #@compareAndSwapPAcq_shenandoah"
- %}
+ ins_cost(3 * STORE_COST);
+ format %{ "sw $src, $mem\t# compressed ptr, shenandoah late-barrier, #@storeN_shenandoah" %}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->store_c2(this, masm,
+ Address(as_Register($mem$$base), $mem$$disp),
+ /* dst_narrow = */ true,
+ as_Register($src$$reg),
+ /* src_narrow = */ true,
+ as_Register($tmp$$reg));
%}
- ins_pipe(pipe_slow);
+ ins_pipe(istore_reg_mem);
%}
- instruct compareAndSwapNAcq_shenandoah(iRegINoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahCompareAndSwapN mem (Binary oldval newval)));
- ins_cost(10 * DEFAULT_COST);
+ // Encode and Store Compressed Pointer
+ instruct encodePAndStoreN_shenandoah(memory mem, iRegP src, iRegPNoSp tmp, rFlagsReg cr)
+ %{
+ match(Set mem (StoreN mem (EncodeP src)));
+ predicate(UseShenandoahGC && n->as_Store()->barrier_data() != 0);
effect(TEMP tmp, KILL cr);
+ ins_cost(4 * STORE_COST);
format %{
- "cmpxchgw_acq_shenandoah_narrow_oop $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval with temp $tmp, #@compareAndSwapNAcq_shenandoah"
+ "encode_heap_oop $tmp, $src\n\t"
+ "sw $tmp, $mem\t# compressed ptr, shenandoah late-barrier, #@encodePAndStoreN_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->store_c2(this, masm,
+ Address(as_Register($mem$$base), $mem$$disp),
+ /* dst_narrow = */ true,
+ as_Register($src$$reg),
+ /* src_narrow = */ false,
+ as_Register($tmp$$reg));
%}
- ins_pipe(pipe_slow);
+ ins_pipe(istore_reg_mem);
%}
- instruct compareAndExchangeN_shenandoah(iRegNNoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahCompareAndExchangeN mem (Binary oldval newval)));
+ instruct compareAndSwap_P_shenandoah(iRegINoSp res, indirect mem, iRegPNoSp oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
+ match(Set res (CompareAndSwapP mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
+
effect(TEMP_DEF res, TEMP tmp, KILL cr);
format %{
- "cmpxchgw_shenandoah $res = $mem, $oldval, $newval\t# (narrow oop, weak) if $mem == $oldval then $mem <-- $newval, #@compareAndExchangeN_shenandoah"
+ "cmpxchg_P_shenandoah $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval, #@compareAndSwap_P_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- true /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ false,
+ /* maybe_null */ true,
+ /* is_narrow */ false,
+ /* weak */ false);
%}
ins_pipe(pipe_slow);
%}
- instruct compareAndExchangeP_shenandoah(iRegPNoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahCompareAndExchangeP mem (Binary oldval newval)));
+ instruct compareAndSwap_N_shenandoah(iRegINoSp res, indirect mem, iRegNNoSp oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
+ match(Set res (CompareAndSwapN mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
effect(TEMP_DEF res, TEMP tmp, KILL cr);
+
format %{
- "cmpxchg_shenandoah $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval with temp $tmp, #@compareAndExchangeP_shenandoah"
+ "cmpxchg_N_shenandoah $mem, $oldval, $newval\t# (narrow ptr) if $mem == $oldval then $mem <-- $newval, #@compareAndSwap_N_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- true /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ false,
+ /* maybe_null */ true,
+ /* is_narrow */ true,
+ /* weak */ false);
%}
ins_pipe(pipe_slow);
%}
- instruct weakCompareAndSwapN_shenandoah(iRegINoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahWeakCompareAndSwapN mem (Binary oldval newval)));
+ instruct compareAndExchange_N_shenandoah(iRegNNoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
+ match(Set res (CompareAndExchangeN mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
+ effect(TEMP_DEF res, TEMP tmp, KILL cr);
- effect(TEMP tmp, KILL cr);
format %{
- "cmpxchgw_shenandoah $res = $mem, $oldval, $newval\t# (narrow oop, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwapN_shenandoah"
- "mv $res, EQ\t# $res <-- (EQ ? 1 : 0)"
+ "cae_N_shenandoah $res = $mem, $oldval, $newval\t# (narrow oop) if $mem == $oldval then $mem <-- $newval, #@compareAndExchange_N_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- // Weak is not current supported by ShenandoahBarrierSet::cmpxchg_oop
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ true,
+ /* maybe_null */ (this->bottom_type()->make_ptr()->ptr() != TypePtr::NotNull),
+ /* is_narrow */ true,
+ /* weak */ false);
%}
ins_pipe(pipe_slow);
%}
- instruct compareAndExchangeNAcq_shenandoah(iRegNNoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahCompareAndExchangeN mem (Binary oldval newval)));
+ instruct compareAndExchange_P_shenandoah(iRegPNoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
+ match(Set res (CompareAndExchangeP mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
effect(TEMP_DEF res, TEMP tmp, KILL cr);
format %{
- "cmpxchgw_acq_shenandoah $res = $mem, $oldval, $newval\t# (narrow oop, weak) if $mem == $oldval then $mem <-- $newval, #@compareAndExchangeNAcq_shenandoah"
+ "cae_P_shenandoah $res = $mem, $oldval, $newval\t# (ptr) if $mem == $oldval then $mem <-- $newval, #@compareAndExchange_P_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register);
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- true /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ true,
+ /* maybe_null */ (this->bottom_type()->make_ptr()->ptr() != TypePtr::NotNull),
+ /* is_narrow */ false,
+ /* weak */ false);
%}
ins_pipe(pipe_slow);
%}
- instruct compareAndExchangePAcq_shenandoah(iRegPNoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahCompareAndExchangeP mem (Binary oldval newval)));
+ instruct weakCompareAndSwap_N_shenandoah(iRegINoSp res, indirect mem, iRegNNoSp oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
+ match(Set res (WeakCompareAndSwapN mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
effect(TEMP_DEF res, TEMP tmp, KILL cr);
format %{
- "cmpxchg_acq_shenandoah $res = $mem, $oldval, $newval\t# (narrow oop, weak) if $mem == $oldval then $mem <-- $newval, #@compareAndExchangePAcq_shenandoah"
+ "cae_N_weak_shenandoah $res = $mem, $oldval, $newval\t# (N, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwap_N_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register);
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- true /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ false,
+ /* maybe_null */ true,
+ /* is_narrow */ true,
+ /* weak */ true);
%}
ins_pipe(pipe_slow);
%}
- instruct weakCompareAndSwapP_shenandoah(iRegINoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- match(Set res (ShenandoahWeakCompareAndSwapP mem (Binary oldval newval)));
+ instruct weakCompareAndSwap_P_shenandoah(iRegINoSp res, indirect mem, iRegPNoSp oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
+ match(Set res (WeakCompareAndSwapP mem (Binary oldval newval)));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
ins_cost(10 * DEFAULT_COST);
- effect(TEMP tmp, KILL cr);
+ effect(TEMP_DEF res, TEMP tmp, KILL cr);
format %{
- "cmpxchg_shenandoah $res = $mem, $oldval, $newval\t# (ptr, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwapP_shenandoah"
+ "cae_P_weak_shenandoah $res = $mem, $oldval, $newval\t# (P, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwap_P_shenandoah"
%}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::relaxed /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->compare_and_set_c2(this, masm,
+ as_Register($res$$reg),
+ as_Register($mem$$base),
+ as_Register($oldval$$reg),
+ as_Register($newval$$reg),
+ as_Register($tmp$$reg),
+ /* exchange */ false,
+ /* maybe_null */ true,
+ /* is_narrow */ false,
+ /* weak */ true);
%}
ins_pipe(pipe_slow);
%}
- instruct weakCompareAndSwapNAcq_shenandoah(iRegINoSp res, indirect mem, iRegN oldval, iRegN newval, iRegNNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahWeakCompareAndSwapN mem (Binary oldval newval)));
+ instruct getAndSet_P_shenandoah(indirect mem, iRegP newval, iRegPNoSp preval, iRegPNoSp tmp, rFlagsReg cr)
+ %{
+ match(Set preval (GetAndSetP mem newval));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
+ effect(TEMP_DEF preval, TEMP tmp, KILL cr);
ins_cost(10 * DEFAULT_COST);
-
- effect(TEMP tmp, KILL cr);
- format %{
- "cmpxchgw_acq_shenandoah $res = $mem, $oldval, $newval\t# (ptr, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwapNAcq_shenandoah"
- "mv $res, EQ\t# $res <-- (EQ ? 1 : 0)"
- %}
-
+ format %{ "get_and_set_P $preval, $newval, [$mem], #@getAndSet_P_shenandoah" %}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- // Weak is not current supported by ShenandoahBarrierSet::cmpxchg_oop
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->get_and_set_c2(this, masm,
+ as_Register($preval$$reg),
+ as_Register($newval$$reg),
+ as_Register($mem$$base),
+ as_Register($tmp$$reg));
%}
-
ins_pipe(pipe_slow);
%}
- instruct weakCompareAndSwapPAcq_shenandoah(iRegINoSp res, indirect mem, iRegP oldval, iRegP newval, iRegPNoSp tmp, rFlagsReg cr) %{
- predicate(needs_acquiring_load_reserved(n));
- match(Set res (ShenandoahWeakCompareAndSwapP mem (Binary oldval newval)));
+ instruct getAndSet_N_shenandoah(indirect mem, iRegN newval, iRegNNoSp preval, iRegNNoSp tmp, rFlagsReg cr)
+ %{
+ match(Set preval (GetAndSetN mem newval));
+ predicate(UseShenandoahGC && n->as_LoadStore()->barrier_data() != 0);
+ effect(TEMP_DEF preval, TEMP tmp, KILL cr);
ins_cost(10 * DEFAULT_COST);
-
- effect(TEMP tmp, KILL cr);
- format %{
- "cmpxchg_acq_shenandoah $res = $mem, $oldval, $newval\t# (ptr, weak) if $mem == $oldval then $mem <-- $newval, #@weakCompareAndSwapPAcq_shenandoah"
- "mv $res, EQ\t# $res <-- (EQ ? 1 : 0)"
- %}
-
+ format %{ "get_and_set_N $preval, $newval, [$mem], #@getAndSet_N_shenandoah" %}
ins_encode %{
- Register tmp = $tmp$$Register;
- __ mv(tmp, $oldval$$Register); // Must not clobber oldval.
- // Weak is not current supported by ShenandoahBarrierSet::cmpxchg_oop
- ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm, $mem$$Register, tmp, $newval$$Register,
- Assembler::aq /* acquire */, Assembler::rl /* release */,
- false /* is_cae */, $res$$Register);
+ ShenandoahBarrierSet::assembler()->get_and_set_c2(this, masm,
+ as_Register($preval$$reg),
+ as_Register($newval$$reg),
+ as_Register($mem$$base),
+ as_Register($tmp$$reg));
%}
-
ins_pipe(pipe_slow);
%}
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