src/share/vm/opto/macroArrayCopy.cpp

*** 293,303 ****
    // If so, we will take responsibility here for initializing it to zero.
    // (Note:  Because tightly_coupled_allocation performs checks on the
    // out-edges of the dest, we need to avoid making derived pointers
    // from it until we have checked its uses.)
    if (ReduceBulkZeroing
!       && !ZeroTLAB              // pointless if already zeroed
        && basic_elem_type != T_CONFLICT // avoid corner case
        && !src->eqv_uncast(dest)
        && alloc != NULL
        && _igvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0
        && alloc->maybe_set_complete(&_igvn)) {
--- 293,303 ----
    // If so, we will take responsibility here for initializing it to zero.
    // (Note:  Because tightly_coupled_allocation performs checks on the
    // out-edges of the dest, we need to avoid making derived pointers
    // from it until we have checked its uses.)
    if (ReduceBulkZeroing
!       && !(UseTLAB && ZeroTLAB) // pointless if already zeroed
        && basic_elem_type != T_CONFLICT // avoid corner case
        && !src->eqv_uncast(dest)
        && alloc != NULL
        && _igvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0
        && alloc->maybe_set_complete(&_igvn)) {