This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [RFC] PowerPC 128 bit long double compatibility (PR target/19019)
>>>>> Geoffrey Keating writes:
>> /* Standard AIX/Darwin/64-bit SVR4 quad floating point
>> routines. */
>> ! set_optab_libfunc (add_optab, TFmode, "__gcc_qadd");
>> ! set_optab_libfunc (sub_optab, TFmode, "__gcc_qsub");
>> ! set_optab_libfunc (smul_optab, TFmode, "__gcc_qmul");
>> ! set_optab_libfunc (sdiv_optab, TFmode, "__gcc_qdiv");
>> }
>> else
>> {
Geoff> Shouldn't this part be conditional on some flag, xlc-compat or
Geoff> something? (The rest looks fine.)
Only AIX and XLC provide the _xlq routines and GCC on platforms
other than AIX. Non-AIX platforms do not normally link with the XLC
support library. The GCC semantics are stricter, so I think that we only
lose performance by always using the GCC functions. I do not see that we
generate any usable code if we make the symbols conditional on xl-compat.
David