Mercurial > hg > truffle
diff src/share/vm/opto/memnode.hpp @ 4763:1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
Summary: adds store store barrier after initialization of header and body of objects.
Reviewed-by: never, kvn
| author | roland |
|---|---|
| date | Tue, 20 Dec 2011 16:56:50 +0100 |
| parents | 1bd45abaa507 |
| children | 53a127075045 |
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--- a/src/share/vm/opto/memnode.hpp Wed Dec 07 11:35:03 2011 +0100 +++ b/src/share/vm/opto/memnode.hpp Tue Dec 20 16:56:50 2011 +0100 @@ -918,6 +918,15 @@ virtual int Opcode() const; }; +class MemBarStoreStoreNode: public MemBarNode { +public: + MemBarStoreStoreNode(Compile* C, int alias_idx, Node* precedent) + : MemBarNode(C, alias_idx, precedent) { + init_class_id(Class_MemBarStoreStore); + } + virtual int Opcode() const; +}; + // Ordering between a volatile store and a following volatile load. // Requires multi-CPU visibility? class MemBarVolatileNode: public MemBarNode { @@ -950,6 +959,8 @@ }; int _is_complete; + bool _does_not_escape; + public: enum { Control = TypeFunc::Control, @@ -989,6 +1000,9 @@ void set_complete(PhaseGVN* phase); void set_complete_with_arraycopy() { _is_complete = Complete | WithArraycopy; } + bool does_not_escape() { return _does_not_escape; } + void set_does_not_escape() { _does_not_escape = true; } + #ifdef ASSERT // ensure all non-degenerate stores are ordered and non-overlapping bool stores_are_sane(PhaseTransform* phase);