GH-118093: Fix off-by-one errors in tier-up thresholds #124447
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brandtbucher
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Instead of warming up loops at 16 hits and side-exits at 64 hits, we're currently warming them up at 17 hits and 65 hits, respectively. This is just a simple change to fix the thresholds.
No change in stats, perf is 0.7% faster and memory is 0.5% lower, but that's probably just noise.