26 %}

    26 #include "gc/shenandoah/c2/shenandoahSupport.hpp"

    27 

    28 instruct shenandoahRB(rRegP dst, rRegP src, rFlagsReg cr) %{

    29   match(Set dst (ShenandoahReadBarrier src));

    30   effect(DEF dst, USE src);

    31   ins_cost(125); // XXX

    32   format %{ "shenandoah_rb $dst, $src" %}

    33   ins_encode %{

    34     Register d = $dst$$Register;

    35     Register s = $src$$Register;

    36     __ movptr(d, Address(s, ShenandoahBrooksPointer::byte_offset()));

    37   %}

    38   ins_pipe(ialu_reg_mem);

    39 %}

    40 

    41 instruct shenandoahRBNarrow(rRegP dst, rRegN src) %{

    42   predicate(UseCompressedOops && (Universe::narrow_oop_shift() == 0));

    43   match(Set dst (ShenandoahReadBarrier (DecodeN src)));

    44   effect(DEF dst, USE src);

    45   ins_cost(125); // XXX

    46   format %{ "shenandoah_rb $dst, $src" %}

    47   ins_encode %{

    48     Register d = $dst$$Register;

    49     Register s = $src$$Register;

    50     __ movptr(d, Address(r12, s, Address::times_1, ShenandoahBrooksPointer::byte_offset()));

    51   %}

    52   ins_pipe(ialu_reg_mem);

    53 %}

    54 

    55 instruct shenandoahRBNarrowShift(rRegP dst, rRegN src) %{

    56   predicate(UseCompressedOops && (Universe::narrow_oop_shift() == Address::times_8));

    57   match(Set dst (ShenandoahReadBarrier (DecodeN src)));

    58   effect(DEF dst, USE src);

    59   ins_cost(125); // XXX

    60   format %{ "shenandoah_rb $dst, $src" %}

    61   ins_encode %{

    62     Register d = $dst$$Register;

    63     Register s = $src$$Register;

    64     __ movptr(d, Address(r12, s, Address::times_8, ShenandoahBrooksPointer::byte_offset()));

    65   %}

    66   ins_pipe(ialu_reg_mem);