Expand `fuzz_simplify` coverage for shuffle, lane-extraction, and vector-reduction expressions#9034

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Copilot wants to merge 11 commits intomainfrom

copilot/expand-fuzz-simplify-expressions

Commits on Mar 15, 2026

Initial plan

Copilot
authored and
alexreinking
committed
Expand fuzz_simplify shuffle generation

Copilot
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alexreinking
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Harden fuzz_simplify shuffle helper

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alexreinking
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Add VectorReduce generation to fuzz_simplify

Copilot
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alexreinking
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Fix invalid VectorReduce fuzz generation

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alexreinking
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Pivot to regression fix plan

Copilot
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alexreinking
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Co-authored-by: alexreinking <169273+alexreinking@users.noreply.github.com>

Copilot
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alexreinking
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Merge main into branch

Copilot
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alexreinking
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Harden merged pre-commit auto-fix workflow

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alexreinking
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Resolve remaining PR merge conflicts

Copilot
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alexreinking
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Preserve lane counts in random conditions

Copilot
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alexreinking
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