Performance improvement on LLVM build time #20
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Do a shallow clone using `--shallow-since` flag in order to spend less time cloning the LLVM repo. The LLVM repo is huge, which leads to a 400+ MB directory, and it takes a reasonable time to clone the repository. Adding a `--shallow-since` flag using the date before the desired revision led to a performance improvement of 4x cloning the repo.
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Summary: - Change the static_assert to allow JavaClass types. - Change pointer cast in getElement to use JniType. - In setElement, use new toPlainJniReference that converts JavaClass values to plain JNI references using ReprAccess. - NOTE: Maybe we should do this last one in JMethod::operator() as well, since it currently passes JavaClass values directly to env->Invoke* Pull Request resolved: facebookincubator/fbjni#20 Test Plan: CI Reviewed By: mhorowitz Differential Revision: D18121242 Pulled By: dreiss fbshipit-source-id: 634e92ab55a3bbf05efac5ac61193fb27f4d1445
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Do a shallow clone using
--shallow-sinceflagin order to spend less time cloning the LLVM repo.
The LLVM repo is huge, which leads to a 400+ MB
directory, and it takes a reasonable time to clone
the repository.
Adding a
--shallow-sinceflag using the datebefore the desired revision led to a performance
improvement of 4x cloning the repo.
The 8 Oct 2018 date is the day before the desired
revision specified in the code.
My local tests:
Without shallow clone:
With shallow clone: