[clang] [llvm] RFC: Implementing new mechanism for hard register operands to inline asm as a constraint. (PR #85846)

[Tony Tao via llvm-commits]

tltao wrote:

Ping. Restarting this topic as GCC have implemented the same feature. https://gcc.gnu.org/onlinedocs/gcc/Hard-Register-Constraints.html

https://github.com/llvm/llvm-project/pull/85846