466 // Clone primitive array
467 bt = T_LONG;
468 }
469
470 Node* const ctrl = ac->in(TypeFunc::Control);
471 Node* const mem = ac->in(TypeFunc::Memory);
472 Node* const src = ac->in(ArrayCopyNode::Src);
473 Node* src_offset = ac->in(ArrayCopyNode::SrcPos);
474 Node* const dest = ac->in(ArrayCopyNode::Dest);
475 Node* dest_offset = ac->in(ArrayCopyNode::DestPos);
476 Node* length = ac->in(ArrayCopyNode::Length);
477
478 if (bt == T_OBJECT) {
479 // BarrierSetC2::clone sets the offsets via BarrierSetC2::arraycopy_payload_base_offset
480 // which 8-byte aligns them to allow for word size copies. Make sure the offsets point
481 // to the first element in the array when cloning object arrays. Otherwise, load
482 // barriers are applied to parts of the header. Also adjust the length accordingly.
483 assert(src_offset == dest_offset, "should be equal");
484 const jlong offset = src_offset->get_long();
485 if (offset != arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
486 assert(!UseCompressedClassPointers, "should only happen without compressed class pointers");
487 assert((arrayOopDesc::base_offset_in_bytes(T_OBJECT) - offset) == BytesPerLong, "unexpected offset");
488 length = phase->transform_later(new SubLNode(length, phase->longcon(1))); // Size is in longs
489 src_offset = phase->longcon(arrayOopDesc::base_offset_in_bytes(T_OBJECT));
490 dest_offset = src_offset;
491 }
492 }
493 Node* const payload_src = phase->basic_plus_adr(src, src_offset);
494 Node* const payload_dst = phase->basic_plus_adr(dest, dest_offset);
495
496 const char* copyfunc_name = "arraycopy";
497 const address copyfunc_addr = phase->basictype2arraycopy(bt, nullptr, nullptr, true, copyfunc_name, true);
498
499 const TypePtr* const raw_adr_type = TypeRawPtr::BOTTOM;
500 const TypeFunc* const call_type = OptoRuntime::fast_arraycopy_Type();
501
502 Node* const call = phase->make_leaf_call(ctrl, mem, call_type, copyfunc_addr, copyfunc_name, raw_adr_type, payload_src, payload_dst, length XTOP);
503 phase->transform_later(call);
504
505 phase->igvn().replace_node(ac, call);
506 return;
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466 // Clone primitive array
467 bt = T_LONG;
468 }
469
470 Node* const ctrl = ac->in(TypeFunc::Control);
471 Node* const mem = ac->in(TypeFunc::Memory);
472 Node* const src = ac->in(ArrayCopyNode::Src);
473 Node* src_offset = ac->in(ArrayCopyNode::SrcPos);
474 Node* const dest = ac->in(ArrayCopyNode::Dest);
475 Node* dest_offset = ac->in(ArrayCopyNode::DestPos);
476 Node* length = ac->in(ArrayCopyNode::Length);
477
478 if (bt == T_OBJECT) {
479 // BarrierSetC2::clone sets the offsets via BarrierSetC2::arraycopy_payload_base_offset
480 // which 8-byte aligns them to allow for word size copies. Make sure the offsets point
481 // to the first element in the array when cloning object arrays. Otherwise, load
482 // barriers are applied to parts of the header. Also adjust the length accordingly.
483 assert(src_offset == dest_offset, "should be equal");
484 const jlong offset = src_offset->get_long();
485 if (offset != arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
486 assert(!UseCompressedClassPointers || UseCompactObjectHeaders, "should only happen without compressed class pointers");
487 assert((arrayOopDesc::base_offset_in_bytes(T_OBJECT) - offset) == BytesPerLong, "unexpected offset");
488 length = phase->transform_later(new SubLNode(length, phase->longcon(1))); // Size is in longs
489 src_offset = phase->longcon(arrayOopDesc::base_offset_in_bytes(T_OBJECT));
490 dest_offset = src_offset;
491 }
492 }
493 Node* const payload_src = phase->basic_plus_adr(src, src_offset);
494 Node* const payload_dst = phase->basic_plus_adr(dest, dest_offset);
495
496 const char* copyfunc_name = "arraycopy";
497 const address copyfunc_addr = phase->basictype2arraycopy(bt, nullptr, nullptr, true, copyfunc_name, true);
498
499 const TypePtr* const raw_adr_type = TypeRawPtr::BOTTOM;
500 const TypeFunc* const call_type = OptoRuntime::fast_arraycopy_Type();
501
502 Node* const call = phase->make_leaf_call(ctrl, mem, call_type, copyfunc_addr, copyfunc_name, raw_adr_type, payload_src, payload_dst, length XTOP);
503 phase->transform_later(call);
504
505 phase->igvn().replace_node(ac, call);
506 return;
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