https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Jan 30, 2019 at 09:10:25PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
>
> --- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
>
> Yes, it seems to be a target issue. It's i585-*-freebsd
> and x86_64-*-freebsd.
>
> I've found that gcc/config/freebsd.h contains
>
> #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
>
> AFAIK, FreeBSD is C99 compliant. This is an area I haven't worked
> in. I might be able to change this to default_libc_has_function,
> but that doesn't include sincos. So, it seems I need a function,
> perhaps, bsd_libc_has_function in targhooks.[ch]
>
> /* Assume that c99 functions are present at the runtime,
> including sincos. */
> bool
> bsd_libc_has_function (enum function_class fn_class)
> {
> if (fn_class == function_c94
> || fn_class == function_c99_misc
> || fn_class == function_c99_math_complex
> || fn_class == function_sincos)
> return true;
>
> return false;
> }
>
With the attached patch, there is an improvement in the
the number of passing tests for gcc. Both g++ and gfortran
are unchanged.
=== gcc Summary ===
# of expected passes 134938
# of unexpected failures 178
# of unexpected successes 27
# of expected failures 550
# of unresolved testcases 14
# of unsupported tests 2222
=== g++ Summary ===
# of expected passes 124050
# of unexpected failures 42
# of expected failures 548
# of unsupported tests 5594
=== gfortran Summary ===
# of expected passes 48999
# of unexpected failures 1
# of expected failures 130
# of unsupported tests 88
In code spelunking, I've inspected all of the builtins implied
by the various function_* keywords. For FreeBSD, this comes
down to
function_c94
All functions available.
function_c99_misc
powl, tgammal exist but have precision issues
function_c99_math_complex
ccoshl, ccosl, cexpl, csinhl, csinl, ctanhl, ctanl. These functions
are missing.
cpow[fl] is available, but is from Cephes library. These have
precisions issues on i686 and maybe 128-bit long double.
function_c11_misc
function available
