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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 65149e74c706
children e9a5e0a812c8
comparison
equal deleted inserted replaced
4762:069ab3f976d3 4763:1dc233a8c7fe
7362 predicate(Matcher::post_store_load_barrier(n)); 7362 predicate(Matcher::post_store_load_barrier(n));
7363 ins_cost(0); 7363 ins_cost(0);
7364 7364
7365 size(0); 7365 size(0);
7366 format %{ "MEMBAR-volatile (unnecessary so empty encoding)" %} 7366 format %{ "MEMBAR-volatile (unnecessary so empty encoding)" %}
7367 ins_encode( );
7368 ins_pipe(empty);
7369 %}
7370
7371 instruct membar_storestore() %{
7372 match(MemBarStoreStore);
7373 ins_cost(0);
7374
7375 size(0);
7376 format %{ "MEMBAR-storestore (empty encoding)" %}
7367 ins_encode( ); 7377 ins_encode( );
7368 ins_pipe(empty); 7378 ins_pipe(empty);
7369 %} 7379 %}
7370 7380
7371 //----------Move Instructions-------------------------------------------------- 7381 //----------Move Instructions--------------------------------------------------