swiftlang/swift

[SR-407] Support ELF in cmpcodesize

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#43,024 opened on 2015年12月29日

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good first issueimprovement

説明
Previous ID SR-407
Radar None
Original Reporter @modocache
Type Improvement
Votes 0
Component/s
Labels Improvement, StarterBug
Assignee None
Priority Medium

md5: 47c497e6ac62c1fc388cf821f38e6cd3

Issue Description:

In https://github.com/apple/swift/pull/638, Nadav Rotem mentions supporting ELF as a potential feature for cmpcodesize.

cmpcodesize is a tool used by the Swift performance team to measure the size of built Swift products. It would be useful to see the size of built products on Linux (ELF) as well as on OS X (Mach-O, which cmpcodesize currently supports).

While the script currently uses otool (available on OS X), the readelf executable could be used to analyze files linked with ELF. readelf is available on Linux.

The script could detect the current platform and use the appropriate executable.

コントリビューターガイド

技術スタック
swiftshell
領域
toolingperformance
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
half day
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Knowledge of Swift's cmpcodesize toolBasic shell scriptingUnderstanding of ELF and Mach O
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
70
調査方針
The issue references PR #638 by Nadav Rotem. The cmpcodesize tool is located in the Swift repository; the script currently uses otool on macOS. On Linux, readelf should be used instead. The solution involves detecting the platform and selecting the appropriate executable. There are no recent comments or maintainer questions.