LLVM 12.0.1 backport to 20.04

Hi,

I'm wondering if LLVM 12.0.1 could be backported to 20.04, please.

As Focal Fossa is an LTS release, and LLVM 12.0.1 contains a fix for its C API, it would be lovely if Fossa could receive the same backport as Impish.

See https://code.launchpad.net/~usd-import-team/ubuntu/+source/llvm-toolchain-12/+git/llvm-toolchain-12 for reference.

Edit: Focal presently carries LLVM 12.0.0, which contains a bug in the C API that renders it unusable for some compilers.

The upstream commit that fixes the bug is https://github.com/llvm/llvm-project/commit/07234c7d6bc246925710b88a1f9552f678587165 and it was included in their 12.0.1 release, which is regrettably unavailable on Focal Fossa at the moment.

Thanks in advance.