[llvm-dev] Multi-Threading Compilers

[Nicholas Krause via llvm-dev]

On 2/28/20 11:56 AM, Johannes Doerfert wrote:
> On 02/28, Nicholas Krause via llvm-dev wrote:
>> Anyhow what is the status and what parts are we planning to move to
>> MLIR in LLVM/Clang.  I've not seen any discussion on that other than
>> starting to plan for it.
> As far as I know, there is no (detailed/discussed/agreed upon/...) plan
> to move any existing functionality in LLVM-Core or Clang to MLIR. There
> are some people that expressed interest in there is Chris's plan on how
> the transition could look like.
>
> If we want to look into multi-threading for the existing LLVM
> infrastructure there are certainly possibilities. Computing (function)
> analyses results prior to CGSCC and Module passes for example. When it
> comes to transformations it is less straight forward but there is still
> interest in looking into it.
>
> I'm traveling but if you are interested we can discuss this further next
> week.
>
> Cheers,
>    Johannes
Johannes,
That's fine. Unfortunately I've a student so the GCC side knows as well 
but I will
only be working on this in my spare time. We did get somewhere with my paper
here:
https://docs.google.com/document/d/1po_RRgSCtRyYgMHjV0itW8iOzJXpTdHYIpC9gUMjOxk/edit

I've looking into the SSA trees currently but we can discuss what you 
guys want me
to start researching first. The research does need to happen including 
profiling due
to avoiding making mistakes in choosing major implementation details.

Otherwise just ping me and the list when your ready or other people can,

Nick