CakeML/cakeml

Remove unnecessary header words

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#142 opened on Sep 1, 2016

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 (1 comment) (0 reactions) (1 assignee)Standard ML (98 forks)auto 404
enhancementhelp wantedmedium effortmedium rewardperformance

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Description

For data whose tag and length can be completely represented in its pointer, there should be no need for a header word. This involves changing the data_to_wordProps invariants.

Contributor guide

Research direction
Examine the `data to wordProps` invariant in the CakeML source code to understand how header words are currently used for data whose tag and length fit within a pointer. Then, propose a change to eliminate the header word for such cases, ensuring the invariant is updated accordingly.
Tech stack
None
Domain
compilers
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitBasic understanding of ML and compilers
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60