llvm-project

62333468 - [GenericCycle] Add a Cache for getExitBlocks in GenericCycle (#112290)

[GenericCycle] Add a Cache for getExitBlocks in GenericCycle (#112290) In `UniformityAnalysis`, we need to get the exit blocks of cycles in the `DivergencePropagator` and currently, we have to do a search for the exit blocks every time. In this change, we add a cache of the results in the `GenericCycle` so that it can save the compile time. By testing, for some large cases, this can save about 60% compile time in the `UniformityAnalysis`.