src/share/vm/c1/c1_Runtime1.cpp

*** 1172,1182 ****
      // Potential problem: memmove is not guaranteed to be word atomic
      // Revisit in Merlin
      memmove(dst_addr, src_addr, length << l2es);
      return ac_ok;
    } else if (src->is_objArray() && dst->is_objArray()) {
!     if (UseCompressedOops) {  // will need for tiered
        narrowOop *src_addr  = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos);
        narrowOop *dst_addr  = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos);
        return obj_arraycopy_work(src, src_addr, dst, dst_addr, length);
      } else {
        oop *src_addr  = objArrayOop(src)->obj_at_addr<oop>(src_pos);
--- 1172,1182 ----
      // Potential problem: memmove is not guaranteed to be word atomic
      // Revisit in Merlin
      memmove(dst_addr, src_addr, length << l2es);
      return ac_ok;
    } else if (src->is_objArray() && dst->is_objArray()) {
!     if (UseCompressedOops) {
        narrowOop *src_addr  = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos);
        narrowOop *dst_addr  = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos);
        return obj_arraycopy_work(src, src_addr, dst, dst_addr, length);
      } else {
        oop *src_addr  = objArrayOop(src)->obj_at_addr<oop>(src_pos);
*** 1208,1221 ****
    BarrierSet* bs = Universe::heap()->barrier_set();
    assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
    assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well.");
    if (UseCompressedOops) {
      bs->write_ref_array_pre((narrowOop*)dst, num);
    } else {
      bs->write_ref_array_pre((oop*)dst, num);
-   }
    Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num);
    bs->write_ref_array(dst, num);
  JRT_END
  
  
  #ifndef PRODUCT
--- 1208,1222 ----
    BarrierSet* bs = Universe::heap()->barrier_set();
    assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
    assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well.");
    if (UseCompressedOops) {
      bs->write_ref_array_pre((narrowOop*)dst, num);
+     Copy::conjoint_oops_atomic((narrowOop*) src, (narrowOop*) dst, num);
    } else {
      bs->write_ref_array_pre((oop*)dst, num);
      Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num);
+   }
    bs->write_ref_array(dst, num);
  JRT_END
  
  
  #ifndef PRODUCT