On 02/19/2010 12:38 PM, Aldy Hernandez wrote: > Since the TM library on ia32 is built with -m486, which doesn't have > 64-bit atomic operations, should we... > > a) Build with -m586 and above. > b) Have _ITM_transactionId_t be 32-bit quantities. > c) Come up with some locking solution for archs that don't have > 64-bit atomic operations. > My personal opinion on this is that unless we are 100% sure that performance are decent anyway (thus 3), or 32-bits are certainly enough (thus 2), we should not waste time supporting anything older than -m586 for the transactional memory work.
Paolo.
