rprichard added a comment.

In D96403#2639210 <https://reviews.llvm.org/D96403#2639210>, @srhines wrote:

> It is actually using `clang-r416183` from toolchains.py 
> <https://android.googlesource.com/platform/ndk/+/b99ed034df649c4c072bfb24151e13dc91722395/ndk/toolchains.py#25>.
>  From there, you can go to the manifest for building those prebuilts 
> <https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/7094e5df5e701d98ad2b7cf8959cb64ed79d4010/clang-r416183/manifest_7211189.xml>.
>  This line 
> <https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/7094e5df5e701d98ad2b7cf8959cb64ed79d4010/clang-r416183/manifest_7211189.xml#12>
>  shows you the SHA for the `toolchain/llvm-project` used to build the 
> prebuilts. Finally, you can look here 
> <https://android.googlesource.com/toolchain/llvm-project/+/c935d99d7cf2016289302412d708641d52d2f7ee>
>  to see what was merged. Note that there's a typo for the revision number in 
> the commit message, but the upstream LLVM SHA 
> <https://github.com/llvm/llvm-project/commit/8456c3a789285079ad35d146e487436b5a27b027>
>  mentioned there is correct. Here 
> <https://ci.android.com/builds/branches/aosp-llvm-toolchain/grid?head=7211189&tail=7211189>
>  is where this toolchain was built in case that is useful/interesting.

Also: that manifest 
<https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/7094e5df5e701d98ad2b7cf8959cb64ed79d4010/clang-r416183/manifest_7211189.xml>
 also links to the `toolchain/llvm_android` git repository 
<https://android.googlesource.com/toolchain/llvm_android/+/dd5252ad91f5a261ed732f5b728a80e0d1919917>,
 which has a Python-based build system and a series of patches 
<https://android.googlesource.com/toolchain/llvm_android/+/dd5252ad91f5a261ed732f5b728a80e0d1919917/patches/PATCHES.json>
 (mostly cherry-picks) applied to the baseline llvm-project source.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D96403

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