On Sat, Aug 07, 2004 at 11:53:28AM +1000, John Sheahan wrote: > I for one would be interested in hearing the order of performance > improvements possible > by compiler choice. In many applications verilog throuput is important.
I don't know what performance increase I expect here. GCC3.3 versus XLC on the power4 platform sees gains anywhere from something like 20% to 100% and better on SPEC2000, and I believe that is without trying to tune for autoparallelization. A rule of thumb on Irix seems to be that MIPSpro tends to be 5%-30% faster with just a recompile. Irix seems to be one platform where a little hand tuning of C/C++ code can reap tremendous gains. But, I fear I'm probably not actually very good at doing those sorts of tunings.
