NEON widening left shift
Registered by
Michael Hope
Use the NEON widening shift left instruction.
Teach the vectorizer to detect widening shift left patterns and generate VSHLL instruction.
This feature will improve performance of several libav functions, e.g. dxa.c:decode_
Blueprint information
- Status:
- Complete
- Approver:
- Michael Hope
- Priority:
- Medium
- Drafter:
- Ira Rosen
- Direction:
- Approved
- Assignee:
- Ira Rosen
- Definition:
- Approved
- Series goal:
- Accepted for 4.6
- Implementation:
-
Implemented
- Milestone target:
-
4.6-2011.11
- Started by
- Michael Hope
- Completed by
- Michael Hope
Related branches
Related bugs
Sprints
Whiteboard
Meta:
Headline: Teach the vectorizer to detect widening shift left patterns and generate VSHLL instruction.
Acceptance: https:/
(?)
Work Items
Work items:
De-allocated as the improvements aren't as much as expected and more work needs to be done: DONE
