On Thu, Apr 29, 2021 at 04:31:50PM +0000, Joseph Myers wrote: > On Thu, 29 Apr 2021, Michael Meissner via Gcc-patches wrote: > > > Fix PR bootstrap/100327 (_divkf3.c) on PowerPC. > > > > This patch fixes the PowerPC _divkf3.c module to use the appropriate > > FLT128 constants if long double is not IEEE 128-bit. > > > > I have tested this patch by doing a bootstrap on a little endian power9 > > system running Linux. Can I check this into the trunk? > > Why aren't the __LIBGCC_KF_* macros defined? If there's a bug in the > logic to define macros for all floating-point modes supported by libgcc, > it should be fixed there. If there's some reason that can't work, the > commit message needs to explain in more detail.
As Richard points out, the default libgcc_floating_mode_supported_p returns false for these types. If you add a target hook to return true for these types, the c-cppbuiltin.c then aborts because there is no suffix for these types. There is no target hook to define strings to add new suffixes (or prefixes). -- Michael Meissner, IBM IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
