About

Implements support for bitmanip extensions in Go assembler (Zba, Zbb, Zbs).

Dependency
Upstreaming	COMPLETED	https://go-review.googlesource.com/c/go/+/559655 https://go-review.googlesource.com/c/go/+/565015 https://go-review.googlesource.com/c/go/+/560315 https://go-review.googlesource.com/c/go/+/572735 https://go-review.googlesource.com/c/go/+/572736
Upstream version
Contacts	@Ludovic Henry @Yunhai Shang

LR_02_0015: Support for Bitmanip extensions in assembler