granite-rust/compiler/rustc_trait_selection
lcnr bff7b5130d move fast reject test out of SelectionContext::match_impl.
`match_impl` has two call sites. For one of them (within `rematch_impl`)
the fast reject test isn't necessary, because any rejection would
represent a compiler bug.

This commit moves the fast reject test to the other `match_impl` call
site, in `assemble_candidates_from_impls`. This lets us move the fast
reject test outside the `probe` call in that function. This avoids the
taking of useless snapshots when the fast reject test succeeds, which
gives a performance win when compiling the `bitmaps` and `nalgebra`
crates.

Co-authored-by: name <n.nethercote@gmail.com>
2022-05-25 07:40:38 +02:00
..
src move fast reject test out of SelectionContext::match_impl. 2022-05-25 07:40:38 +02:00
Cargo.toml Rollup merge of #89461 - crlf0710:dyn_upcasting_lint, r=nikomatsakis 2021-10-07 16:24:49 +02:00