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src/hotspot/share/gc/shared/c2/barrierSetC2.cpp
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@@ -560,37 +560,19 @@
C2AccessFence fence(access);
resolve_address(access);
return atomic_add_at_resolved(access, new_val, value_type);
}
-void BarrierSetC2::clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array) const {
- // Exclude the header but include array length to copy by 8 bytes words.
- // Can't use base_offset_in_bytes(bt) since basic type is unknown.
- int base_off = is_array ? arrayOopDesc::length_offset_in_bytes() :
- instanceOopDesc::base_offset_in_bytes();
- // base_off:
- // 8 - 32-bit VM
- // 12 - 64-bit VM, compressed klass
- // 16 - 64-bit VM, normal klass
- if (base_off % BytesPerLong != 0) {
- assert(UseCompressedClassPointers, "");
- if (is_array) {
- // Exclude length to copy by 8 bytes words.
- base_off += sizeof(int);
- } else {
- // Include klass to copy by 8 bytes words.
- base_off = instanceOopDesc::klass_offset_in_bytes();
- }
- assert(base_off % BytesPerLong == 0, "expect 8 bytes alignment");
- }
- Node* src_base = kit->basic_plus_adr(src, base_off);
- Node* dst_base = kit->basic_plus_adr(dst, base_off);
-
- // Compute the length also, if needed:
- Node* countx = size;
- countx = kit->gvn().transform(new SubXNode(countx, kit->MakeConX(base_off)));
- countx = kit->gvn().transform(new URShiftXNode(countx, kit->intcon(LogBytesPerLong) ));
+void BarrierSetC2::clone(GraphKit* kit, Node* src_base, Node* dst_base, Node* countx, bool is_array) const {
+#ifdef ASSERT
+ intptr_t src_offset;
+ Node* src = AddPNode::Ideal_base_and_offset(src_base, &kit->gvn(), src_offset);
+ intptr_t dst_offset;
+ Node* dst = AddPNode::Ideal_base_and_offset(dst_base, &kit->gvn(), dst_offset);
+ assert(src == NULL || (src_offset % BytesPerLong == 0), "expect 8 bytes alignment");
+ assert(dst == NULL || (dst_offset % BytesPerLong == 0), "expect 8 bytes alignment");
+#endif
const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM;
ArrayCopyNode* ac = ArrayCopyNode::make(kit, false, src_base, NULL, dst_base, NULL, countx, false, false);
ac->set_clonebasic();
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