[llvm] [JTS] Add a call count threshold (PR #189782)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

Reproducer `.bc` (in a .tar.gz because Github file extension limitations) file is attached. You can reproduce the compile time regression by seeing `opt -passes="default<O3>" test.bc -disable-output` completing in a reasonable amount of time, and `opt -passes="default<O3>" -enable-jump-table-to-switch -disable-output` not completing in a reasonable amount of time.

[test.tar.gz](https://github.com/user-attachments/files/26468294/test.tar.gz)

I'll do some digging and see if I can figure out what's going on. Thanks for the feedback so far.

https://github.com/llvm/llvm-project/pull/189782