perf: optimize spark_unhex in spark-expr#4876

andygrove merged 3 commits into

apache:mainapache/datafusion-comet:mainfrom

andygrove:auto-opt/spark_unhex-2026-07-09-pr1andygrove/datafusion-comet:auto-opt/spark_unhex-2026-07-09-pr1Copy head branch name to clipboard