[PATCH] D143229: [AutoUpgrade] Add flag to disable auto-upgrade

[Arthur Eubanks via Phabricator via llvm-commits]

aeubanks added a comment.

In D143229#4168182 <https://reviews.llvm.org/D143229#4168182>, @nikic wrote:

>> I may be wrong, but I believe rust does inter-crate (Thin)LTO, all bitcode produced from the same rustc frontend, which could also use this.
>
> Conceptually yes, we don't need verification for compiler-driven LTO (which is the default). We wouldn't be able to use it as implemented though, because we do need to auto-upgrade intrinsics in the initial IR, while this effectively "breaks" UpgradeCallsToIntrinsic().

Why does rust need to auto upgrade intrinsics during in the post link LTO step?


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https://reviews.llvm.org/D143229