RFR: 8277619: AArch64: Incorrect parameter type in Advanced SIMD Copy assembler functions

[Fei Gao]

On Wed, 1 Dec 2021 09:49:23 GMT, Fei Gao <fgao at openjdk.org> wrote:

> Mov (from general), incorrectly uses SIMD_Arrangement as the parameter
> type of the assembler function. However, from Arm ARM [1], it's more
> precise to use SIMD_RegVariant here.
> 
> The situation is similar to Mov(to general) [2].
> 
> Note that as Mov(to general) is an alias of UMOV, we turn to re-use
> UMOV encoding for Mov(to general) in this patch.
> 
> [1] https://developer.arm.com/documentation/ddi0602/2020-12/SIMD-FP-Instructions/MOV--from-general---Move-general-purpose-register-to-a-vector-element--an-alias-of-INS--general--
> [2] https://developer.arm.com/documentation/ddi0602/2020-12/SIMD-FP-Instructions/MOV--to-general---Move-vector-element-to-general-purpose-register--an-alias-of-UMOV-

The PR does some code cleaning in AArch64 assembler. Can I have your review please?

-------------

PR: https://git.openjdk.java.net/jdk/pull/6629