Auto merge of #123645 - matthiaskrgr:rollup-yd8d7f1, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - #122781 (Fix argument ABI for overaligned structs on ppc64le)
 - #123367 (Safe Transmute: Compute transmutability from `rustc_target::abi::Layout`)
 - #123518 (Fix `ByMove` coroutine-closure shim (for 2021 precise closure capturing behavior))
 - #123547 (bootstrap: remove unused pub fns)
 - #123564 (Don't emit divide-by-zero panic paths in `StepBy::len`)
 - #123578 (Restore `pred_known_to_hold_modulo_regions`)
 - #123591 (Remove unnecessary cast from `LLVMRustGetInstrProfIncrementIntrinsic`)
 - #123632 (parser: reduce visibility of unnecessary public `UnmatchedDelim`)
 - #123635 (CFI: Fix ICE in KCFI non-associated function pointers)

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