[libre-riscv-dev] PowerISA 3.1 (Power10) spec released

Luke Kenneth Casson Leighton lkcl at lkcl.net
Tue May 12 08:50:09 BST 2020

On Tue, May 12, 2020 at 7:00 AM Lauri Kasanen <cand at gmx.com> wrote:

> level. However the Linux level requires SIMD.

this is more serious.  the implementation burden of POWER SIMD
compliance is absolutely massive.  a quick count from figure 91 i
estimate 600 instructions dedicated to INT and FP SIMD.

the scalar instruction set is much more manageable: there's 378
opcodes from microwatt CSV files, then there's 20 FP LD/ST, and
estimated 70 or so FP arithmetic and 8 or so status registers.


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