FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

LoadClosure as pseudo op by youknowone · Pull Request #6789 · RustPython/RustPython · GitHub

/ RustPython Public

LoadClosure as pseudo op - #6789

Merged
youknowone merged 1 commit into
RustPython:mainfrom
youknowone:LoadClosure
Jan 18, 2026
ConversationCommits (1)ChecksFiles changed
Merged

LoadClosure as pseudo op#6789
youknowone merged 1 commit into
RustPython:mainfrom
youknowone:LoadClosure

Conversation

youknowone commented Jan 18, 2026 •
edited by coderabbitai Bot
Loading

Copy link
Copy Markdown
Member

Summary by CodeRabbit

  • Refactor
    • Optimized internal bytecode instruction handling for closure variable loading, improving the compiler's variable scope management and frame initialization during runtime.

✏️ Tip: You can customize this high-level summary in your review settings.

coderabbitai Bot commented Jan 18, 2026 •
edited
Loading

Copy link
Copy Markdown
Contributor
📝 Walkthrough

Walkthrough

The PR migrates the LoadClosure opcode from the concrete Instruction enum to the PseudoInstruction enum, updating bytecode emission, IR lowering, decoding logic, instruction metadata, and VM frame execution paths to accommodate this structural change.

Changes

Cohort / File(s) Summary
Bytecode Definition and Conversion
crates/compiler-core/src/bytecode/instruction.rs		 Moves LoadClosure(Arg<NameIdx>) from Instruction to PseudoInstruction (discriminant 268); updates TryFrom bounds and removes LoadClosure handling from Instruction paths; removes stack effects and formatting for LoadClosure from Instruction, adds stack effect of 1 to PseudoInstruction.
Code Generation and IR Lowering
crates/codegen/src/compile.rs, crates/codegen/src/ir.rs		 Updates closure variable emission to use PseudoInstruction::LoadClosure instead of Instruction::LoadClosure; adds IR lowering to convert PseudoInstruction::LoadClosure to LOAD_FAST with index adjusted by varnames count.
Opcode Metadata
crates/stdlib/src/opcode.rs		 Removes LoadClosure(_) from the has_free instruction pattern match, no longer treating it as a free-variable instruction.
Frame Execution and Locals
crates/vm/src/frame.rs		 Restructures frame locals initialization to combine varnames, cellvars, and freevars into a single fastlocals array with pre-filled cell objects; removes the Instruction::LoadClosure execution path from frame dispatch.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Possibly related PRs

Suggested reviewers

  • ShaharNaveh

Poem

🐰 A closure hops from Instruction's gate,
To Pseudo's burrow, a lighter fate!
Fastlocals swell with cells in place,
No more dispatch—just stack-bound grace.

🚥 Pre-merge checks | ✅ 2 | ❌ 1 ❌ Failed checks (1 warning)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (2 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately describes the main change: moving LoadClosure from a regular Instruction to a PseudoInstruction, which is the primary focus across all modified files.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing touches
  • 📝 Generate docstrings

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

Comment @coderabbitai help to get the list of available commands and usage tips.

github-actions Bot commented Jan 18, 2026

Copy link
Copy Markdown
Contributor

Code has been automatically formatted

The code in this PR has been formatted using:

  • python scripts/generate_opcode_metadata.py
    Please pull the latest changes before pushing again:
git pull origin LoadClosure

youknowone marked this pull request as ready for review January 18, 2026 17:37
youknowone merged commit 130bb82 into RustPython:main Jan 18, 2026
13 checks passed
youknowone deleted the LoadClosure branch January 18, 2026 17:45
This was referenced Jan 29, 2026
Merged
Merged
Merged
This was referenced Mar 2, 2026
Merged
Closed
coderabbitai Bot mentioned this pull request Mar 25, 2026
Merged
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
Show hidden characters
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

1 participant

Back | FazBrowse Home | New Git URL