RFR: 8261142: AArch64: Incorrect instruction encoding when right-shifting vectors with shift amount equals to the element width [v10]

[Andrew Haley]

On 24/02/2021 07:33, Dong Bo wrote:
> Weird, I took a look at the the assembly, `ssra` did accessed by the tests on our server:

I don't doubt it, but the test code is so very complex that it can
fall foul of heuristics given slightly changed circumstances. That's
why good test cases are as simple as possible, and allow no room for
variations because they do only one thing. Precise targeting should
be the goal of HotSpot back-end test cases.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671