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Preserve semantic errors in null checks - #10330

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ct/preserve-null-check-errors
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connortsui20 wants to merge 5 commits into
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ct/preserve-null-check-errors

Guard null-check rewrites instead of validity rules

13ef05e
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CodSpeed / CodSpeed Performance Analysis succeeded Oct 7, 2026 in 0s

Performance Gate Passed

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 1 improved benchmark
✅ 2122 untouched benchmarks
⏩ 518 skipped benchmarks1

Performance Changes

Mode Benchmark BASE HEAD Efficiency
⚡ Simulation random_i128[0.01] 10.1 µs 9 µs +11.87%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.


Comparing ct/preserve-null-check-errors (13ef05e) with develop (9324b04)

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Footnotes

  1. 518 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. ↩