[Openmp-commits] [openmp] [openmp] Add support for arm64ec to libomp (PR #176151)

[Martin Storsjö via Openmp-commits]

mstorsjo wrote:

> I've switched to just using the existing arm64 asm that we use for aarch64-pc-windows-msvc, as that seems to also meet the requirements for arm64ec. The ABI for non-variadic functions is the same between aarch64 and arm64ec, and the outline function will always _actually_ be non-variadic so the same implementation ought to work for both. I've also now tested this on a few real applications and it gives correct results. @mstorsjo would you be able to run the unit tests again and see if the results are any better?

A quick run shows 220 instances of `PASS:`, 38 instaces of `FAIL:`, and the test run still hanging, but possibly fewer tests hanging now.

https://github.com/llvm/llvm-project/pull/176151