[ARROW-8553] [C++] Optimize unaligned bitmap operations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.17.0
• Fix Version/s: 1.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24720
• Assignee: Yibo Cai
• Reporter: Antoine Pitrou
• Created: 22/Apr/20 12:43
• Updated: 11/Jan/23 08:01
• Resolved: 15/May/20 02:12

Description

Currently, BitmapAnd uses a bit-by-bit loop for unaligned inputs. Using Bitmap::VisitWords instead would probably yield a manyfold performance increase.

Issue Links

• relates to: ARROW-8762 [C++][Gandiva] Replace Gandiva's BitmapAnd with common implementation
• links to: GitHub Pull Request #7135