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8252227: [lworld] Merge of jdk-16+5 broke compiler/arraycopy/ #163

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@@ -4647,6 +4647,7 @@ bool LibraryCallKit::inline_native_clone(bool is_virtual) {

BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
if (bs->array_copy_requires_gc_barriers(true, T_OBJECT, true, BarrierSetC2::Parsing) &&
UseFlatArray && obj_type->klass()->can_be_inline_array_klass() &&
(!obj_type->isa_aryptr() || !obj_type->is_aryptr()->is_not_flat())) {
// Flattened inline type array may have object field that would require a
// write barrier. Conservatively, go to slow path.