llvm / llvm/circt

[FIRRTL] Add non-local annotation support to GCT Data Taps

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bug FIRRTL
Dominant language
C++
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Forks
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Avg merge
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Merged PRs (30d)
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Description

The Grand Central Data/Mem Taps pass currently only works with annotations that refer to entire modules. With the non-local annotations having been merged recently, it should now be expanded to also properly support those. We've seen a few cases internally where this is necessary.

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

Start by locating the Grand Central Data/Mem Taps pass and its handling of annotations that refer to entire modules. Then inspect the recently merged non-local annotation support; the work is done when the pass properly handles annotations referring to non-module targets.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
48/100

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