Use globals instead of metadata for std::autodiff #147390
Open
+70
−81
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
rustbot
added
the
A-LLVM
|
r? @nnethercote rustbot has assigned @nnethercote. Use |
rustbot
added
F-autodiff
|
r? @jieyouxu since you already reviewed my last two test PRs I might as well directly assign you ^^ Thanks! |
|
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
LLVM's Metadata is quite fragile. In debug builds we use incremental compilation, which caused the metadata to be dropped. With this change we use named globals instead of metadata to instruct Enzyme how to differentiate functions.
Globals are proper llvm values and thus can't be dropped. Also added an incremental/dbg test which now passes.
r? compiler