feat(tasks): track memory allocations for oxc_semantic

[camc314]

Maybe there is a reason we didn't have this before 🤔 ?

I think it's a useful metric to track though, so this PR adds support for tracking allocations in semantic

[camc314]

• feat(tasks): track memory allocations for oxc_semantic #17758 👈 (View in Graphite)
• chore(ci): run track_memory_allocations when oxc_semantic changes #17757
• chore(allocs): re-generate minifier allocs snapshot #17756
• main

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[camc314]

Cam / Dunqing I assigned this to both of you, whoever gets there first do they mind reviewing and merging 🙂

Thanks!

[Copilot]

Pull request overview

This PR adds memory allocation tracking for the oxc_semantic component to the existing memory allocation tracking system. Previously, only parser and minifier allocations were tracked.

Key changes:

• Added semantic allocation tracking between parsing and semantic analysis phases
• Created new snapshot file allocs_semantic.snap to record semantic allocation metrics

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tasks/track_memory_allocations/src/lib.rs	Added semantic_out variable, recorded semantic stats after SemanticBuilder.build(), and wrote semantic snapshot
tasks/track_memory_allocations/allocs_semantic.snap	New snapshot file containing semantic allocation metrics for test fixtures

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[camchenry]

I did originally add the semantic stats tracking in #13012, but stopped as I wanted to get arena allocations too. That ended up being much more difficult so I didn't do it. But I don't see any downside to at least tracking the system allocations here.

[camchenry]

Merge activity

• Jan 8, 2:31 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 8, 2:31 AM UTC: camchenry added this pull request to the Graphite merge queue.
• Jan 8, 2:44 AM UTC: Merged by the Graphite merge queue.