[llvm-branch-commits] [clang] [llvm] [X86][ACE] Add x86_bsr type and Block Scale Register support (PR #208706)

[Renato Golin via llvm-branch-commits]

rengolin wrote:

> Should be `target("x86.bsr")`. `x86_amx` predates the existence of target extension types.

We should eventually move `x86_amx`, and make it less opaque, but that's a different PR altogether.

@phoebewang

https://github.com/llvm/llvm-project/pull/208706