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fix and clarify llvm bugfix policy (#1611)

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Tshepang Mbambo 2023-02-18 13:46:21 +02:00 committed by GitHub
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src/backend/updating-llvm.md
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@ -2,7 +2,7 @@
<!-- toc -->
<!-- date-check: Aug 2022 -->
<!-- date-check: Feb 2023 -->
There is no formal policy about when to update LLVM or what it can be updated to,
but a few guidelines are applied:
@ -16,9 +16,9 @@ but a few guidelines are applied:
There are two reasons we would want to update LLVM:
* A bug could have been fixed! Often we find bugs in the compiler and fix
them upstream in LLVM. We'll want to pull fixes back to the compiler itself as
they're merged upstream.
* A bug could have been fixed!
Note that if we are the ones who fixed such a bug,
we prefer to upstream it, then pull it back for use by rustc.
* LLVM itself may have a new release.