RFR: 8295023: Interpreter(AArch64): Implement -XX:+PrintBytecodeHistogram and -XX:+PrintBytecodePairHistogram options [v2]

[Hao Sun]

On Wed, 12 Oct 2022 01:41:11 GMT, Hao Sun <haosun at openjdk.org> wrote:

>> src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp line 2008:
>> 
>>> 2006:           BytecodePairHistogram::log2_number_of_codes);
>>> 2007:   __ stxrw(rscratch2, index, index_addr);
>>> 2008:   __ cbnzw(rscratch2, L);  // retry to load _index
>> 
>> Please add `atomic_ldorrw` to the list of `ATOMIC_OP`s (in macroAssembler_aarch64.cpp) and use it here.
>
> Agree. Will update.

Updated in the latest commit. Please help take another look. Thanks.

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PR: https://git.openjdk.org/jdk/pull/10642