Reapply [cxx-interop] Avoid copies when accessing pointee #83370
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
Xazax-hun
requested review from
zoecarver,
egorzhdan,
j-hui,
fahadnayyar,
susmonteiro,
hnrklssn,
beccadax and
ian-twilightcoder
as code owners
After swiftlang#83289 and swiftlang#82879 landed we should no longer get deserialization failures and this feature is no longer behind a flag. This patch also changes how we query if a function's return value depends on self. Previously, we queried the lifetime dependencies from the Swift declaration. Unfortunately, this is problematic as we might have not finished fully importing the types in the function signature just yet and the compiler might end up populating the conformance tables prematurely. To work this around, I store functions with self-dependent return values where lifetimes are computed in the importer for later use. The PR also adds a test to make sure the addressable dependency feature will not result in deserialization errors. rdar://155319311&154213694&112690482&128293252
Xazax-hun
force-pushed
the
addressable-param-copy-reapply
branch
from
5603a98 to
ab1c929
Compare
|
@swift-ci please smoke test |
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Outdated suggestions cannot be applied.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.
After #83289 and #82879 landed we should no longer get deserialization failures and this feature is no longer behind a flag. This patch also changes how we query if a function's return value depends on self. Previously, we queried the lifetime dependencies from the Swift declaration. Unfortunately, this is problematic as we might have not finished fully importing the types in the function signature just yet and the compiler might end up populating the conformance tables prematurely. To work this around, I store functions with self-dependent return values where lifetimes are computed in the importer for later use.
The PR also adds a test to make sure the addressable dependency feature will not result in deserialization errors.
rdar://155319311&154213694&112690482&128293252