Opt tool missing

Hello I downloaded the windows binary of LLVM (LLVM-9.0.0-r***-win64.exe) and it’s missing the opt tool (it also appears to be missing from the 6.xxx binary so it’s not a recent development). Do I need to build from source to get this tool? Is there a complete list of what’s included in the binary packages?
Thanks

“opt” is considered a developer tool, and the prebuilt packages are intended for end users. So yes, you will need to build opt yourself if you want to use it.

There’s probably a list of what’s in the packages somewhere, but I don’t know where.

–paulr