[ty] Respect type variables in top/bottom materializations of invariant generics - #28072
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sharkdp wants to merge 11 commits into
Draft
[ty] Respect type variables in top/bottom materializations of invariant generics#28072sharkdp wants to merge 11 commits into
sharkdp wants to merge 11 commits into
CodSpeed HQ / CodSpeed Performance Analysis
failed
Aug 28, 2026 in 0s
Performance Regression: -23.28%
⚠️ Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.
❌ 1 regressed benchmark
✅ 125 untouched benchmarks
⏩ 84 skipped benchmarks1
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | ty_micro[invariant_generic_return_union] |
198.7 ms | 259 ms | -23.28% |
Tip
Investigate this regression with the CodSpeed MCP and your agent.
Comparing codex/invariant-typevar-materializations (88059dd) with main (c0b78da)
Footnotes
-
84 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩
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