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[ARM] Support inline assembler constraints for MVE.

Authored by simon_tatham on Mon, Apr 15, 6:00 AM.



"To" selects an odd-numbered GPR, and "Te" an even one. There are some
8.1-M instructions that have one too few bits in their register fields
and require registers of particular parity, without necessarily using
a consecutive even/odd pair.

Also, the constraint letter "t" should select an MVE q-register, when
MVE is present. This didn't need any source changes, but some extra
tests have been added.

Event Timeline

simon_tatham created this revision.Mon, Apr 15, 6:00 AM
Herald added projects: Restricted Project, Restricted Project. · View Herald TranscriptMon, Apr 15, 6:00 AM

Is this coordinated with GCC?

t.p.northover accepted this revision.Mon, Apr 15, 7:53 AM

Excellent, looks good to me then.

This revision is now accepted and ready to land.Mon, Apr 15, 7:53 AM