> On 15 Dec 2025, at 05:34, Jerry D <[email protected]> wrote:
>
> Hi all,
>
> I was looking through the testsuite in gfortran.dg and found the following in
> bessel_6.f90.
>
> ! { dg-add-options ieee }
>
> This is at the top with no other directives. The documentation I find in
> online docs does not mention this option ieee. It does say "dg-add-options"
> must be preceded by a dg-do run. There is no dg-do anything anywhere.
>
> So what exactly is this supposed to do?
dg-add-options XXXXX
gets translated into
add_options_for_XXXXX
which is supposed to add any target-specific options needed to support XXXXX
in this case;
# Add to FLAGS all the target-specific flags needed to enable
# full IEEE compliance mode.
proc add_options_for_ieee { flags } {
if { [istarget alpha*-*-*]
|| [istarget sh*-*-*] } {
return "$flags -mieee"
}
if { [istarget rx-*-*] } {
return "$flags -mnofpu"
}
return $flags
}
so it’s somewhat orthogonal to whether the test is a compile or run test (the
constraint mentioned does apply tho - some things in the dg-* processing are
order-specific).
HTH
Iain
>
> Jerry
>
>
>
