[mypyc] Allow specifying primitives as pure #17263
Merged
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
Pure primitives have no side effects, take only immutable arguments, and never fail. These properties will enable additional optimizations. For example, it doesn't matter in which order these primitives are evaluated, and we can perform common subexpression elimination on them. Only mark a few primitivies as pure for now, but we can generalize this later.
msullivan
approved these changes
May 18, 2024
|
Is there a timeline / roadmap for pure function detection? Or is this more exploratory? |
|
This is specific to primitives, i.e. it isn't used for user-defined functions. Since there is a closed set of primitives, it wouldn't be hard to manually annotate all of them that are pure. There are no plans currently to automatically detect if user-defined functions are pure, if that's what you are interested in. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
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Outdated suggestions cannot be applied.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.
Pure primitives have no side effects, take only immutable arguments,
and never fail. These properties will enable additional
optimizations. For example, it doesn't matter in which order
these primitives are evaluated, and we can perform common
subexpression elimination on them.
Only mark a few primitives as pure for now, but we can generalize
this later.