I would like to run coverage tests at '-O1' (using -coverage and lcov, gaining >2x time over -O0), but unfortunately unused functions (e.g. static functions not called) are removed from the coverage report at -O1, which otherwise looks good to me.
So, the question: is there a way to compile at -O1 but keep all functions ? (i tried -fno-tree-dce but that didn't help). Bonus points if this also works for Fortran. (I'm aware of -Wunused-functions, but this doesn't fit the requirements).
testcase:
> cat test.c
static void foo()
{
}
void bar()
{
}
> gcc -c -O0 test.c ; nm test.
0000000000000007 T bar
0000000000000000 t foo
> gcc -c -O1 test.c ; nm test.o
0000000000000000 T bar
Thanks,
Joost
