[opt] Also hoist bitwise reductions through sel same as comparisons#3693

cdleary wants to merge 2 commits intogoogle:maingoogle/xls:mainfrom

xlsynth:cdleary/2026-01-15-push-cmp-across-sel-when-cheap-also-bitwise-reductionsxlsynth/xlsynth:cdleary/2026-01-15-push-cmp-across-sel-when-cheap-also-bitwise-reductionsCopy head branch name to clipboard