Questions regarding the RISCV native codegen & performance

[Matthew Pickering]

Hi Daniel. I think Sven Tennie and the LoongArch contributors are the
experts in NCG for these kinds of instruction sets. I have cced them.

Cheers,

Matt

On Tue, Apr 15, 2025 at 5:40 PM Daniel Trujillo Viedma <
danihacker.viedma at gmail.com> wrote:

> Hello, ghc-devs! My name is Daniel Trujillo, I'm a Haskell enthusiast
> from Spain and I'm trying to make my Master's thesis about accelerating
> Haskell programs with a custom ISA extension.
>
>
> Right now, my focus is in executing software written in Haskell within
> QEMU in order to get traces that tells me, basically, how many times
> each block (not exactly basic blocks, but sort of) of assembly code has
> been executed, with the hope of finding some patterns of RISCV
> instructions that I could implement together into 1 instruction.
>
>
> As you can see, my method is a bit crude, and I was wondering if the
> people involved with any of the different internal representations (STG,
> Cmm...) and/or native code generators (particularly RISCV) could provide
> me hints about assembly instructions that would have made the work
> easier, by removing the need of "massaging" the Cmm code to make CodeGen
> easier, or the need of particular optimizations, or in general, dirty
> tricks because of lacking of proper support of the standard RISCV ISA.
>
>
> And of course, I would also appreciate very much other hints from people
> involved in general performance (as oppossed to, for example, libraries
> for SIMD and parallel execution, or Haskell wrappers to lower-level code
> for performance reasons).
>
>
> P.D. I'm sorry if I broke any netiquette rule, but I'm very new to the
> email list, and haven't received yet any email from it.
>
>
> Looking forward to hear from you!
>
> Cheers,
>
> Dani.
>
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/ghc-devs/attachments/20250416/0b79de74/attachment.html>