Rollup merge of #148600 - folkertdev:pass-indirectly-reuse-attrs, r=JonathanBrouwer

re-use `self.get_all_attrs` result for pass indirectly attribute

Could be a fix for a potential performance regression reported here rust-lang/rust#144529 (comment). Apparently the regression later disappeared. Nevertheless, this seems like a decent refactor.

r? ````@JonathanBrouwer```` (vaguely attribute-related, maybe there are other optimizations to that PR that we're missing)

Author: matthiaskrgr