Allow matching on 3+ variant niche-encoded enums to optimize better#139729

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scottmcm wants to merge 2 commits intorust-lang:masterfrom

scottmcm:more-enum-tweaks

Commits on Apr 12, 2025

More codegen tests for enum discriminants
scottmcm
committed

Commits on Apr 13, 2025

Optimize no-wrap niche discriminant cases
scottmcm
committed