Auto merge of #149478 - matthiaskrgr:rollup-0omf56q, r=matthiaskrgr

Rollup of 3 pull requests

Successful merges:

 - rust-lang/rust#149236 (Clarify edge cases for Barrier::new)
 - rust-lang/rust#149444 (collapse `constness` query `match` logic)
 - rust-lang/rust#149475 (float::min/max: reference NaN bit pattern rules)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors