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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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4
hotspot/src/share/vm/adlc/formssel.cpp
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@ -627,6 +627,7 @@ bool InstructForm::is_wide_memory_kill(FormDict &globals) const {
if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true;
if( strcmp(_matrule->_opType,"MemBarReleaseLock") == 0 ) return true;
if( strcmp(_matrule->_opType,"MemBarAcquireLock") == 0 ) return true;
if( strcmp(_matrule->_opType,"MemBarStoreStore") == 0 ) return true;
return false;
}
@ -3978,7 +3979,8 @@ bool MatchRule::is_ideal_membar() const {
!strcmp(_opType,"MemBarAcquireLock") ||
!strcmp(_opType,"MemBarReleaseLock") ||
!strcmp(_opType,"MemBarVolatile" ) ||
!strcmp(_opType,"MemBarCPUOrder" ) ;
!strcmp(_opType,"MemBarCPUOrder" ) ||
!strcmp(_opType,"MemBarStoreStore" );
}
bool MatchRule::is_ideal_loadPC() const {