> On Fri, 10 Jan 2014 18:49:48 +0100 (CET) > [email protected] wrote: > > > Yes, I am finally done. I have tested ghdl_mcode with the > > different > > testsuites. > > > > Is the mcode variant preferred over the gcc variant?
Not really. They are two different trade-offs. Mcode is very small and very fast, but the code generated is not optimized. I use it simply because it builds quickly and run tests quickly too. > What's the most > likely cause of ghdl-gcc failing tests while ghdl-mcode passes the > tests? Bugs in ghdl-gcc. Plus the fact that ghdl-mcode generates code only for simulating, not during analysis. > How significant is the run-time performance difference between the > two? The simple fact that ieee.std_logic_1164 is compiled with optimisation by gcc makes a difference. > (Personally, I am interested in the run-time performance of [large] > models with complex data structures - not just RTL and I especially > don't care about net-list simulation performance). Has anyone > performed > any side-by-side characterizations of the two? That really depends on you design. Try yourself! Tristan. _______________________________________________ Ghdl-discuss mailing list [email protected] https://mail.gna.org/listinfo/ghdl-discuss
