swiftlang/swift

[SR-7152] Investigate a Better Collection for CaseIterable Synthesis

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#49,700 opened on Mar 9, 2018

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Description
Previous ID SR-7152
Radar None
Original Reporter @CodaFi
Type Improvement
Votes 0
Component/s Compiler
Labels Improvement, StarterBug
Assignee None
Priority Medium

md5: a133635420a390cef5a90e74eb062506

Issue Description:

As of this issue, the derived collection is an Array. We should investigate more effective collections before the final branch date for Swift 4.2/5

Contributor guide

Research direction
Investigate more efficient data structures than Array for storing enum cases in CaseIterable synthesis, considering cache locality and iteration speed.
Tech stack
swift
Domain
backend
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
GitSwiftCompiler Development
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70