how to add a reduction instruction

[gxlong1983]

hi

we want to add an reduction instruction to sum all the element of a vector and the result is placed in a shared register.
You can see the similar instruction of vredsum.vs in the v-spec of risc-v and its web site is https://github.com/riscv/riscv-v-spec/blob/master/v-spec.adoc.
I copy the example of the vredsum.vs instruction below.
vredsum.vs vd, vs2, vs1, vm # vd[0] = sum( vs2[*] , vs1[0] )

Could you please give us some advice how to implement it in hwacha? Thanks.

Best Regards,
--gao

[meton-robean]

hi

we want to add an reduction instruction to sum all the element of a vector and the result is placed in a shared register.
You can see the similar instruction of vredsum.vs in the v-spec of risc-v and its web site is https://github.com/riscv/riscv-v-spec/blob/master/v-spec.adoc.
I copy the example of the vredsum.vs instruction below.
vredsum.vs vd, vs2, vs1, vm # vd[0] = sum( vs2[*] , vs1[0] )

Could you please give us some advice how to implement it in hwacha? Thanks.

Best Regards,
--gao

I also want to add an reduction instruction to sum all the element of a vector. But I don't find such instruction in Hwacha Mannual