> The documentation for the directive is missing indeed. We can fix this > during stage3.
Someone who speaks Fortran will have to write it down... > Currently the directive works on the whole function (see > gfc_cfun_has_unroll()) and instructs the loop-optimizers to run on > that function. gfc_cfun_has_unroll is superfluous and has already been dropped because the flag will be set by the middle-end, but this doesn't change the behavior. > The loop-optimizers will discover the ANNOTATE_EXPR and act accordingly. > Richard B. already noted that the RTL unroller might do more than > intended, see https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01468.html > I expect updates to the C and C++ in this area to be reflected to Fortran > too. Yes, it's a generic issue. -- Eric Botcazou
