Cache LLVM configuration read from files in top_dir
See Note [LLVM configuration] in GHC.CmmToLlvm.Config
Currently implemented with unsafe lazy IO. But it could be implemented with an IORef as the exposed interface is in IO.
:: a typeCtrl KGHC 10.0.0.20260917 · lts/ghc-10.0.x · fc4e598 · 2026-10-11
Moduleghc-lib-parser-9.14.1.20251220GHC2021
LLVM config cache
Cache LLVM configuration read from files in top_dir
See Note [LLVM configuration] in GHC.CmmToLlvm.Config
Currently implemented with unsafe lazy IO. But it could be implemented with an IORef as the exposed interface is in IO.