[5.3] FunctionSignatureOptimization: fix a miscompile in owned->guaranteed return value specialization #31661
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
…return value specialization FSO can handle self-recursive calls. But this only works if the result of the self-recursive call is actually returned and not used otherwise. The check for this was missing. https://bugs.swift.org/browse/SR-12677 rdar://problem/62895040
|
@swift-ci test |
tkremenek
approved these changes
May 12, 2020
AnthonyLatsis
added
swift 5.3
🍒 release cherry pick
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Outdated suggestions cannot be applied.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.
FSO can handle self-recursive calls.
But this only works if the result of the self-recursive call is actually returned and not used otherwise.
The check for this was missing.
https://bugs.swift.org/browse/SR-12677
rdar://problem/62895040
This is a cherry-pick of #31581