Maratyszcza / Maratyszcza/PeachPy

ALIGN pseudoinstruction does nothing

Open
#45 0 comments 1 reaction 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Python
Stars
2.1k
Forks
170
PR merge metrics
No merged PRs in 30d

Description

PeachPy appears to support the `ALIGN` directive to align, e.g., loops, but it seems to have no effect on the output.

Since the code generator needs to know the size of instructions, it should have enough information to work out current (relative) offset to the beginning of the function. On the other hand, `Functions` do not seem to have any kind of alignment, so they can start anywhere.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the ALIGN pseudoinstruction and the code generator logic that emits function bodies. Check how instruction sizes and the current offset are represented, then compare that with how Functions are placed without alignment. Done means ALIGN changes the generated output so the targeted code begins at the requested boundary.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.