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7121140: Allocation paths require explicit memory synchronization operations for RMO systems

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Adds store store barrier after initialization of header and body of objects.

Reviewed-by: never, kvn
This commit is contained in:
Roland Westrelin 2011-12-20 16:56:50 +01:00
parent e057d60ca1
commit 97439fb4ff
13 changed files with 196 additions and 7 deletions
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3
hotspot/src/share/vm/opto/memnode.cpp
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@ -2721,6 +2721,7 @@ MemBarNode* MemBarNode::make(Compile* C, int opcode, int atp, Node* pn) {
case Op_MemBarVolatile: return new(C, len) MemBarVolatileNode(C, atp, pn);
case Op_MemBarCPUOrder: return new(C, len) MemBarCPUOrderNode(C, atp, pn);
case Op_Initialize: return new(C, len) InitializeNode(C, atp, pn);
case Op_MemBarStoreStore: return new(C, len) MemBarStoreStoreNode(C, atp, pn);
default: ShouldNotReachHere(); return NULL;
}
}
@ -2870,7 +2871,7 @@ Node *MemBarNode::match( const ProjNode *proj, const Matcher *m ) {
//---------------------------InitializeNode------------------------------------
InitializeNode::InitializeNode(Compile* C, int adr_type, Node* rawoop)
: _is_complete(Incomplete),
: _is_complete(Incomplete), _does_not_escape(false),
MemBarNode(C, adr_type, rawoop)
{
init_class_id(Class_Initialize);