On Tue, Oct 03, 2017 at 04:15:23PM -0400, Michael Meissner wrote: > Here is the patch to add the round to odd instructions using separate UNSPEC > names instead of putting the operation into the unspec. > > I have done a bootstrap and check on a little endian power8 system and there > were no regressions. Can I check this into the trunk?
This looks fine. Okay for trunk. Thanks! Segher > 2017-10-03 Michael Meissner <meiss...@linux.vnet.ibm.com> > > * config/rs6000/rs6000-builtin.def (BU_FLOAT128_2_HW): Define new > helper macro for IEEE float128 hardware built-in functions. > (SQRTF128_ODD): Add built-in functions with the round-to-odd > semantics. > (TRUNCF128_ODD): Likewise. > (ADDF128_ODD): Likewise. > (SUBF128_ODD): Likewise. > (MULF128_ODD): Likewise. > (DIVF128_ODD): Likewise. > (FMAF128_ODD): Likewise. > * config/rs6000/rs6000.md (UNSPEC_ROUND_TO_ODD): Rename to > UNSPEC_TRUNC_ROUND_TO_ODD. > (UNSPEC_TRUNC_ROUND_TO_ODD): Likewise. > (UNSPEC_ADD_ROUND_TO_ODD): New unspec codes for the IEEE 128-bit > floating point round to odd instructions. > (UNSPEC_SUB_ROUND_TO_ODD): Likewise. > (UNSPEC_MUL_ROUND_TO_ODD): Likewise. > (UNSPEC_DIV_ROUND_TO_ODD): Likewise. > (UNSPEC_FMA_ROUND_TO_ODD): Likewise. > (UNSPEC_SQRT_ROUND_TO_ODD): Likewise. > (trunc<mode>sf2_hw): Change the truncate with round to odd > expansion to use UNSPEC_TRUNC_ROUND_TO_ODD. > (add<mode>3_odd): Add insns for IEEE 128-bit floating point round > to odd hardware instructions. > (sub<mode>3_odd): Likewise. > (mul<mode>3_odd): Likewise. > (div<mode>3_odd): Likewise. > (sqrt<mode>2_odd): Likewise. > (fma<mode>4_odd): Likewise. > (fms<mode>4_odd): Likewise. > (nfma<mode>4_odd): Likewise. > (nfms<mode>4_odd): Likewise. > (trunc<mode>df2_odd): Change the truncate with round to odd > expansion to use UNSPEC_TRUNC_ROUND_TO_ODD. Add a generator > function. > * doc/extend.texi (PowerPC built-in functions): Update documentation > for existing IEEE float128-bit built-in functions. Add built-in > functions that generate the IEEE 128-bit floating point round to > odd instructions.
