src/hotspot/cpu/aarch64/gc/shenandoah/shenandoah_aarch64.ad

rev 54386 : 8221766: Load-reference barriers for Shenandoah

*** 43,64 ****
      ShenandoahBarrierSet::assembler()->cmpxchg_oop(&_masm, $mem$$Register, tmp, $newval$$Register,
                                                     /*acquire*/ true, /*release*/ true, /*weak*/ false, /*is_cae*/ false, $res$$Register);
    %}
  %}
  
- instruct shenandoahRB(iRegPNoSp dst, iRegP src, rFlagsReg cr) %{
-   match(Set dst (ShenandoahReadBarrier src));
-   format %{ "shenandoah_rb $dst,$src" %}
-   ins_encode %{
-     Register s = $src$$Register;
-     Register d = $dst$$Register;
-     __ ldr(d, Address(s, ShenandoahBrooksPointer::byte_offset()));
-   %}
-   ins_pipe(pipe_class_memory);
- %}
- 
- 
  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(2 * VOLATILE_REF_COST);
  
--- 43,52 ----