On 06/25/2018 08:32 AM, Peter Maydell wrote: >> +# SVE floating-point multiply-accumulate writing addend >> +FMLA_zpzzz 01100101 .. 1 ..... 000 ... ..... ..... >> @rda_pg_rn_rm >> +FMLS_zpzzz 01100101 .. 1 ..... 001 ... ..... ..... >> @rda_pg_rn_rm >> +FNMLA_zpzzz 01100101 .. 1 ..... 010 ... ..... ..... >> @rda_pg_rn_rm >> +FNMLS_zpzzz 01100101 .. 1 ..... 011 ... ..... ..... >> @rda_pg_rn_rm >> + >> +# SVE floating-point multiply-accumulate writing multiplicand >> +# FMAD, FMSB, FNMAD, FNMS >> +FMLA_zpzzz 01100101 .. 1 ..... 100 ... ..... ..... >> @rdn_pg_rm_ra >> +FMLS_zpzzz 01100101 .. 1 ..... 101 ... ..... ..... >> @rdn_pg_rm_ra >> +FNMLA_zpzzz 01100101 .. 1 ..... 110 ... ..... ..... >> @rdn_pg_rm_ra >> +FNMLS_zpzzz 01100101 .. 1 ..... 111 ... ..... ..... >> @rdn_pg_rm_ra > It's not clear to me how we can implement both of these groups > with the same functions. Some commentary might help.
Note the different decode: @rda_pg_rn_rm vs @rdn_pg_rm_ra. The same sets of arguments are filled in from different fields in the instruction. r~
