[llvm-dev] Multi-Threading Compilers (original) (raw)

Chris Lattner via llvm-dev llvm-dev at lists.llvm.org
Fri Feb 28 18:03:17 PST 2020

On Feb 28, 2020, at 8:56 AM, Johannes Doerfert <johannesdoerfert at gmail.com> 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.

Yep, agreed, I gave a talk a couple days ago (with Tatiana) with a proposed path forward, but explained it as one possible path. We’ll share the slides publicly in a few days after a couple things get taken care of.

-Chris

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

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