Hello, > I want to use profiling information. I know there're two relevent > fields in each basic block, count and frequency. I want to use > frequency because the compiled program is for another architecture so > it cannot run on the host. > > I use -fprofile-arcs.
this does not make much sense to me. If you cannot run the compiled program, adding instrumentation with -fprofile-arcs is useless. In this case, you may just use the guessed frequencies (that you get by default without any flags). Zdenek > And I can see the frequency value when I debug > cc1. But I happen to realize that when I add -fprofile-arcs, it change > the the whole structure of basic block. I compared the vcg output > files with and without the -fprofile-arcs. I found they're totally > different. > > My question is why it is so? I want to know the profiling info, but if > profiling info I get is for another different structure of basic > block, it's useless to me. > > Where do I go wrong here? Which option is the suitable in this case? > The gcc version is 3.3.3. Thanks. > > > Regards, > Timothy
