RFR: 8268231: Aarch64: Use ldp in intrinsics for String.compareTo [v6]

[Andrew Haley]

On Thu, 26 Aug 2021 09:26:24 GMT, Wu Yan <wuyan at openjdk.org> wrote:

>> src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp line 4871:
>> 
>>> 4869:     // exit from large loop when less than 64 bytes left to read or we're about
>>> 4870:     // to prefetch memory behind array border
>>> 4871:     int largeLoopExitCondition = MAX(64, SoftwarePrefetchHintDistance)/(isLL ? 1 : 2);
>> 
>> This breaks the Windows AArch64 build:
>> 
>> 
>> Creating support/modules_libs/java.base/server/jvm.dll from 1051 file(s)
>> d:\a\jdk\jdk\jdk\src\hotspot\cpu\aarch64\stubGenerator_aarch64.cpp(4871): error C3861: 'MAX': identifier not found
>> make[3]: *** [lib/CompileJvm.gmk:143: /cygdrive/d/a/jdk/jdk/jdk/build/windows-aarch64/hotspot/variant-server/libjvm
>> 
>> 
>> https://github.com/Wanghuang-Huawei/jdk/runs/3260986937
>> 
>> Should probably be left as `MAX2`.
>
> Thanks, I'll fix it.

It's fine. I don't think it'll affect any real programs, so it's rather pointless. I don't know if that's any reason not to approve it.

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PR: https://git.openjdk.java.net/jdk/pull/4722