I did a testing on a normal PC and it worked. Thanks. However, I'm using gcc nios2 port. The executable file is downloaded to a board, which is attached to my PC. So while the executable file is running on the board, it doesn't produce any gcda file.
According to Altera nios2 people, I can do some configuration, so that the executable will be able to output to Host PC through normal fputs or fwrite. So is it feasible that I can make executable to output gcda file to my Host PC via fputs or fwrite? Regards, Haibin On 2/21/06, Paolo Bonzini <[EMAIL PROTECTED]> wrote: > Liu Haibin wrote: > > Hi, > > > > I wanted to use bb->count, so I expected that -fprofile-arcs and > > -fbranch-probabilities would help. I added printf just before > > peephole2 optimization and ran the following. > > > > $gcc -O3 -fprofile-arcs test.c -o test > > $./test (which produced test.gcno only, but no test.gcda) > > $gcc -O3 -fprofile-arcs -fbranch-probabilities test.c -o test > > Easier to use -fprofile-generate and -fprofile-use: > > gcc -O3 -fprofile-generate test.c -o test (produces test.gcno) > ./test (now should have as well test.gcda) > gcc -O3 -fprofile-use test.c -o test > > Paolo >
