llvm / llvm/circt

Cache non-inout bits in composite RTL types

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Dominant language
C++
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Merged PRs (30d)
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Description

Cache whether a array or struct contains an inout type, rather than computing it.
Probably want to also cache whether it contains a non-RTL type.

Contributor guide

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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

No files or tests are named. Start by locating the composite RTL type definitions and the code that computes whether arrays or structs contain inout or non-RTL types; done means those results are cached without changing existing type behavior.

Written by the indexing model from the issue text.

Assessment

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

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