310b0a1cf3
In PR #106794, it was noted that `llvm-ml` does not support the `/quiet` flag. The original reason it was added by Microsoft to `ml`/`ml64` was to remove extraneous CMake build output (see [CMake GitLab issue](https://gitlab.kitware.com/cmake/cmake/-/issues/23537)) much like in the linked PR . If the goal is for `llvm-ml` to be a drop-in replacement for `ml`/`ml64`, then I think it makes sense to support the `/quiet` flag, much like how `/nologo` is supported.