RFR: 8284849: Add deoptimization to unified logging [v11]

[Kim Barrett]

On Mon, 23 May 2022 07:22:10 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Johan Sjölén has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Revert my changes to deoptimization.hpp
>>  - Declare log_deopt static
>
> src/hotspot/share/runtime/deoptimization.cpp line 1937:
> 
>> 1935:     if(Log(deoptimization)::is_info()) {
>> 1936:       LogMessage(deoptimization) lm;
>> 1937:       auto tm = trap_method();
> 
> Not sure use if C++11 type inference is a permitted use - I can't find it n the style guide.

[not a review, just responding to @dholmes-ora question]

Search for "Type Deduction" in the style guide.  There aren't a lot of uses, and the guidance is to only use it when there's significant benefit, not just as a convenience to avoid writing the type.

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PR: https://git.openjdk.org/jdk/pull/8812