NEON instruction coverage
Check the coverage of the NEON instruction set by the vectoriser and backend, including different operand types such as registers and constants.
There are two parts to vectorisation - detecting the patterns in the original code, and using those patterns in the backend. We know all of the operations that NEON implements and the operand variants. Check:
* That the operation can be represented in C
* That the vectoriser can recognise the operation
* That the backend implements the operation
* That the backend and vectoriser support the different operands like register vs constant
The advantage is using more of the chip's capabilities and hopefully getting faster code.
Blueprint information
- Status:
- Complete
- Approver:
- Michael Hope
- Priority:
- Medium
- Drafter:
- Michael Hope
- Direction:
- Approved
- Assignee:
- None
- Definition:
- Approved
- Series goal:
- Accepted for 4.6
- Implementation:
-
Informational
- Milestone target:
-
backlog
- Started by
- Matthew Gretton-Dann
- Completed by
- Matthew Gretton-Dann
Related branches
Related bugs
Sprints
Whiteboard
See http://
See https:/
[2013-05-23 matthew-
Work Items
Work items:
Add tests for NEON instructions that can be directly expressed in C: INPROGRESS
Document the current vectoriser coverage: INPROGRESS
Document the current NEON backend coverage: TODO
Dependency tree
* Blueprints in grey have been implemented.
