RFR: 8282365: Optimize divideUnsigned and remainderUnsigned for constants [v3]

[Quan Anh Mai]

On Tue, 20 Sep 2022 00:11:23 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Quan Anh Mai has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 17 commits:
>> 
>>  - Merge branch 'master' into unsignedDiv
>>  - micro
>>  - whitespace
>>  - whitespace
>>  - large divisor
>>  - fix build
>>  - fix 32-bit
>>  - constant folding, mod idealisation, tests
>>  - 32 bit
>>  - backend
>>  - ... and 7 more: https://git.openjdk.org/jdk/compare/38a81913...3052b4ee
>
> src/hotspot/share/opto/divnode.cpp line 1118:
> 
>> 1116:   if (in(0) && remove_dead_region(phase, can_reshape))  return this;
>> 1117:   // Don't bother trying to transform a dead node
>> 1118:   if( in(0) && in(0)->is_top() )  return nullptr;
> 
> Please use correct style in new code here and other places (even for one liner):
> 
>    if (cond) {
>      body;
>    }

Thanks for your reviews, I have changed the code style in these places.

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PR: https://git.openjdk.org/jdk/pull/9947