[release/8.0-staging] Revert "disable optimizations for PopCount (#99796)" #101245
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Backport of #100926 to release/8.0-staging
/cc @mangod9
Customer Impact
This is a change to revert a workaround for a compiler bug which was incorrectly generating popcnt SSE4 instructions.
Regression
[If yes, specify when the regression was introduced. Provide the PR or commit if known.]
Testing
Tested manually on a non-SSE4 machine.
Risk
[Low.] since it's simply a revert of a previous workaround to disable optimizations for a few methods.