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comparison src/share/vm/opto/stringopts.cpp @ 24094:9b69cec6d01b

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Merge with jdk8u121-b13
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 06 Feb 2017 17:18:57 +0100
parents f13e777eb255 173a1f83c930
children
comparison
equal deleted inserted replaced
23997:9a740aa0d87b 24094:9b69cec6d01b
1639 kit.store_String_offset(kit.control(), result, __ intcon(0)); 1639 kit.store_String_offset(kit.control(), result, __ intcon(0));
1640 kit.store_String_length(kit.control(), result, length); 1640 kit.store_String_length(kit.control(), result, length);
1641 } 1641 }
1642 kit.store_String_value(kit.control(), result, char_array); 1642 kit.store_String_value(kit.control(), result, char_array);
1643 1643
1644 // Do not let stores that initialize this object be reordered with 1644 // The value field is final. Emit a barrier here to ensure that the effect
1645 // a subsequent store that would make this object accessible by 1645 // of the initialization is committed to memory before any code publishes
1646 // other threads. 1646 // a reference to the newly constructed object (see Parse::do_exits()).
1647 // Record what AllocateNode this StoreStore protects so that 1647 assert(AllocateNode::Ideal_allocation(result, _gvn) != NULL, "should be newly allocated");
1648 // escape analysis can go from the MemBarStoreStoreNode to the 1648 kit.insert_mem_bar(Op_MemBarRelease, result);
1649 // AllocateNode and eliminate the MemBarStoreStoreNode if possible
1650 // based on the escape status of the AllocateNode.
1651 AllocateNode* alloc = AllocateNode::Ideal_allocation(result, _gvn);
1652 assert(alloc != NULL, "should be newly allocated");
1653 kit.insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress));
1654 } else { 1649 } else {
1655 result = C->top(); 1650 result = C->top();
1656 } 1651 }
1657 // hook up the outgoing control and result 1652 // hook up the outgoing control and result
1658 kit.replace_call(sc->end(), result); 1653 kit.replace_call(sc->end(), result);