On Sat, Apr 6, 2019 at 5:27 PM Jeppe Johansen <je...@j-software.dk> wrote:
> That can't happen or won't benefit much, before the compiler supports > super-natual alignments. So there's a deeper level of support needed. > I'm fairly confident the existing functionality could be improved upon in a useful way. Gareth has already done so in the past. On Sat, Apr 6, 2019 at 5:27 PM Jeppe Johansen <je...@j-software.dk> wrote: > And personally I don't think that's the right long term direction. It > takes a long time to develop and maintain this stuff and you never know > what the market will look like in 10 years. > ARM has SVE, and RISC-V has the upcoming vector extension which will move > far away from the traditional SIMD stuff. > I sincerely doubt I will be using a RISC-V based desktop PC in 10 years. Also nobody said -Sv could not also be extended to stuff such as ARM Neon at some point down the line if someone was up to it. One thing at a time though. On Sat, Apr 6, 2019 at 5:27 PM Jeppe Johansen <je...@j-software.dk> wrote: > Compiler support for block vectorization has rarely paid off really well > given the amount of work that needs to go into it. So maybe it's better to > wait for the next iteration :) > It very objectively pays off in every compiler that has it. I don't think "it's too hard" is a good excuse. I made my previous comment because it seems like Gareth if anyone specifically does *not* think it is too hard.
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