julia

ceeb661e - aotcompile: destroy LLVM context after serializing combined module (#59329)

aotcompile: destroy LLVM context after serializing combined module (#59329) We already save some memory here by deleting the `jl_native_code_desc_t` after we're done serializing the combined module, but some data in the module's `LLVM::Context` lives on until the end of the scope in `jl_dump_native_impl`. Once we're done with the module, move the lock and `ThreadSafeContext` so the reference count drops to zero. A crude measurement shows that when compiling the Base sysimage, about 3 GiB is in use. Deleting the `jl_native_code_desc_t` (as before) saves about 600 MiB, and cleaning up the context saves an additional ~500 MiB.