RFR: 8255625: AArch64: Implement Base64.encodeBlock accelerator/intrinsic [v2]

[Dong Bo]

On Mon, 2 Nov 2020 13:26:49 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Dong Bo has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   change register name sp and unpack the macro
>
> src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp line 5453:
> 
>> 5451: 
>> 5452:     #define BASE64_ENCODE_SIMD_ROUND(in0, in1, in2, out0, out1, out2, out3, SZ) \
>> 5453:       __ ld3(in0,  in1, in2, __ T##SZ##B, __ post(src, 3 * SZ));                \
> 
> There's no need for this to be a macro -- as far as I can see.

Thanks for the suggestions.

Just updated a version.
The register name `sp` is changed to `soff`, and the macro is unpacked into code block `Process48B` and `Process24B`.

Verified with `test/jdk/java/util/Base64/`.

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PR: https://git.openjdk.java.net/jdk/pull/992