[llvm] [llvm-exegesis] Add tablegen support for validation counters (PR #76652)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

@legrosbuffle When you get a chance, are you able to take another look at this along with the other patches in the stack?
1. https://github.com/llvm/llvm-project/pull/76653
2. https://github.com/llvm/llvm-project/pull/76788

I also have a couple other patches that would be nice to land soon. It would be great if you could take a look at them also:
1. https://github.com/llvm/llvm-project/pull/77226
2. https://github.com/llvm/llvm-project/pull/77224
3. https://github.com/llvm/llvm-project/pull/77020
4. https://github.com/llvm/llvm-project/pull/76895

https://github.com/llvm/llvm-project/pull/76652