rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Auto merge of #128776 - Bryanskiy:deep-reject-ctxt, r=lcnr

Browse Source 
Use `DeepRejectCtxt` to quickly reject `ParamEnv` candidates

The description is on the [zulip thread](https://rust-lang.zulipchat.com/#narrow/stream/144729-t-types/topic/.5Basking.20for.20help.5D.20.60DeepRejectCtxt.60.20for.20param.20env.20candidates)

r? `@lcnr`
This commit is contained in:
bors
2024-09-06 19:50:48 +00:00
parent 17b322fa69 c51953f4d8
commit 26b5599e4d
16 changed files with 287 additions and 167 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
compiler/rustc_trait_selection/src/traits/coherence.rs
View File

@@ -15,7 +15,7 @@ use rustc_middle::bug;
use rustc_middle::traits::query::NoSolution;
use rustc_middle::traits::solve::{CandidateSource, Certainty, Goal};
use rustc_middle::traits::specialization_graph::OverlapMode;
use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams};
use rustc_middle::ty::fast_reject::DeepRejectCtxt;
use rustc_middle::ty::visit::{TypeSuperVisitable, TypeVisitable, TypeVisitableExt, TypeVisitor};
use rustc_middle::ty::{self, Ty, TyCtxt};
pub use rustc_next_trait_solver::coherence::*;
@@ -96,7 +96,7 @@ pub fn overlapping_impls(
// Before doing expensive operations like entering an inference context, do
// a quick check via fast_reject to tell if the impl headers could possibly
// unify.
let drcx = DeepRejectCtxt::new(tcx, TreatParams::AsCandidateKey);
let drcx = DeepRejectCtxt::relate_infer_infer(tcx);
let impl1_ref = tcx.impl_trait_ref(impl1_def_id);
let impl2_ref = tcx.impl_trait_ref(impl2_def_id);
let may_overlap = match (impl1_ref, impl2_ref) {