RFR: 8367341: C2: apply KnownBits and unsigned bounds to And / Or operations [v2]

[Emanuel Peter]

On Wed, 15 Oct 2025 08:38:15 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

>> test/hotspot/gtest/opto/test_rangeinference.cpp line 33:
>> 
>>> 31: #include <limits>
>>> 32: #include <type_traits>
>>> 33: #include <unordered_set>
>> 
>> I don't know the current state of code style guide: but are we allowed to use `std::unordered_set`?
>
> I can't think of a better way, we have `HashTable` but it is terrible since the table size is fixed.

Not sure. I'll ask some folks who might know / have an anser / opinion ;)

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/27618#discussion_r2432319221