Turn off 64-bit Bitops in Neon in GCC

Registered by Matthew Gretton-Dann on 2012-10-31

Turn off the 64-bitops in Neon support for various ARM cores on a CPU by CPU basis. By default this feature will be turned off for all current CPUs.

Blueprint information

Status:
Complete
Approver:
Michael Hope
Priority:
Medium
Drafter:
Matthew Gretton-Dann
Direction:
Approved
Assignee:
Christophe Lyon
Definition:
Approved
Series goal:
Accepted for 4.7
Implementation:
Implemented
Milestone target:
milestone icon 4.7-2013.04
Started by
Michael Hope on 2012-11-22
Completed by
Christophe Lyon on 2013-04-08

Whiteboard

[christophe-lyon 2013-03-21]
Committed upstream as svn 196876.

[christophe-lyon 2013-02-11]
Patch has been accepted upstream for 4.9-stage1

[christophe-lyon 2013-04-08]
Patch committed upstream.
Patch backported to linaro-4.7 and linaro-4.8

Meta:
Headline: Enable 64-bitops support in NEON on a core by core basis
Acceptance: Patches accepted upstream
Roadmap id: CARD-304

(?)

Work Items

Work items:
Add support to GCC for per-CPU control of Neon 64-bit bitops: DONE
Document: DONE
Have upstream approve patch: DONE
Run weekly tests with feature on to ensure it doesn't regress: TODO

Dependency tree

* Blueprints in grey have been implemented.

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