Reduce use of VMOV

Registered by Michael Hope

In the initial version of:

https://wiki.linaro.org/RichardSandiford/Sandbox/NeonLibAv

there appeared to be several loops that had unnecessary vector moves. We should investigate whether these moves are indeed unnecessary and find out what produces them. The moves might come from poor register allocation, from problems in the ARM backend description, and so on. Dependent blueprints cover each specific item found.

Status: depends on:

    https://blueprints.launchpad.net/gcc-linaro/+spec/neon-strided-load-extract

but this umbrella blueprint has no work associated with it beyond that.

Blueprint information

Status:
Complete
Approver:
Michael Hope
Priority:
Low
Drafter:
Richard Sandiford
Direction:
Approved
Assignee:
Ulrich Weigand
Definition:
Approved
Series goal:
Accepted for 4.6
Implementation:
Implemented
Milestone target:
None
Started by
Richard Sandiford
Completed by
Ulrich Weigand

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