RFR [12] 8217467 (XS): Access barriers are missing in C2 intrinsic for Base64

[Roman Kennke]

Looks good. Thanks!

Roman


> (correct title)
> 
> On 1/22/19 11:27 AM, Aleksey Shipilev wrote:
>> Bug:
>>   https://bugs.openjdk.java.net/browse/JDK-8217467
>>
>> Fix:
>>   http://cr.openjdk.java.net/~shade/8217467/webrev.01/
>>
>> This is found and verified by Shenandoah CTW tests that verifies barrier placement. Base64 intrinsic
>> is new, and only enabled on modern hardware (I think you need AVX512). I'd like to push this fix to
>> jdk12.
>>
>> Testing: Shenandoah CTW tests, hotspot tier1 (includes compiler/intrinsics/base64), jdk-submit12
>> (running)
>>
>> Thanks,
>> -Aleksey
>>
> 
> 

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