gerekon wrote: Hi guys,
Thanks for you comments. > I am a little concerned that progress on the upstreaming is moving > excessively slowly. what exactly has been happening? > That said, if there are signs that the target is only sporadically > maintained, reaffirming that's not the case would be a good thing, so I think > Eli's question is still a good one to get an answer for. We are maintaining our own [fork of LLVM with Xtensa support](https://github.com/espressif/llvm-project) for several years and release Clang-based toolchain at least for every major LLVM release. I agree that our past upstreaming activity looks like sporadic. There are several reasons for this: 1) At the very first step it was difficult to find people who could review Xtensa arch related part without architecture specification in public. We had to prepare our [own version of Xtensa specification](https://github.com/espressif/xtensa-isa-doc) basing on the GCC and binutils source code available in public. And finally we have planted the first base patch set. 2) Lack of enough resources to cover our own internal development needs and keep upstreaming process at a good pace. Now after extending our LLVM team and some sort of "pushing" from our Rust team and Swift community we have special assignment in the team for upstreaming process. This year we have submitted 13 patches (not including this one): - [x] https://github.com/llvm/llvm-project/pull/78548 - [x] https://github.com/llvm/llvm-project/pull/83280 - [x] https://github.com/llvm/llvm-project/pull/92960 - [x] https://github.com/llvm/llvm-project/pull/95256 - [x] https://github.com/llvm/llvm-project/pull/97017 - [x] https://github.com/llvm/llvm-project/pull/99981 - [x] https://github.com/llvm/llvm-project/pull/106053 - [x] https://github.com/llvm/llvm-project/pull/107363 - [x] https://github.com/llvm/llvm-project/pull/108986 - [x] https://github.com/llvm/llvm-project/pull/110292 - [x] https://github.com/llvm/llvm-project/pull/110959 - [x] https://github.com/llvm/llvm-project/pull/113450 - [ ] https://github.com/llvm/llvm-project/pull/117126 We have a [plan](https://github.com/espressif/llvm-project/issues/4#issuecomment-2343204459) for our upstreaming activity and from this point we can do some patch work in parallel. The main upstreaming activity is done by @andreisfr. I created this PR and plan to create others especially ones related to Xtensa baremetal toolchain support. So keeping in mind our Rust team (https://github.com/esp-rs/rust/issues/89) and Swift community (https://forums.swift.org/t/is-there-support-for-xtensa-lx7-cores/72458) demands and HIFI3 related contribution from @maciej-czekaj it looks like there people exist who are interested in having Xtensa support in LLVM. And we are going to maintain it. https://github.com/llvm/llvm-project/pull/118008 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
