[llvm] [llvm-(min-)tblgen] Avoid redundant source compilation (PR #114494)

[NAKAMURA Takumi via llvm-commits]

https://github.com/chapuni commented:

Thanks for the information.

Looks like #80847 rewound my change.
@Pierre-vh Sorry I was not aware of changes in my review.

https://github.com/llvm/llvm-project/pull/114494