rust/compiler/rustc_trait_selection
Aaron Hill 40ef1d3223
Re-introduce concept of projection cache 'completion'
Instead of clearing out the cache entirely, we store
the intermediate evaluation result into the cache entry.
This accomplishes several things:

* We avoid the performance hit associated with re-evaluating
  the sub-obligations
* We avoid causing issues with incremental compilation, since
  the final evaluation result is always the same
* We avoid affecting other uses of the same `InferCtxt` which
  might care about 'side effects' from processing the sub-obligations
  (e,g. region constraints). Only code that is specifically aware
   of the new 'complete' code is affected
2021-12-18 19:07:14 -05:00
..
src Re-introduce concept of projection cache 'completion' 2021-12-18 19:07:14 -05:00
Cargo.toml Rollup merge of #89461 - crlf0710:dyn_upcasting_lint, r=nikomatsakis 2021-10-07 16:24:49 +02:00