bjoernager/rust
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Remove reuse_or_mk_region.

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It's not used on any hot paths, and so has little perf benefit, and it
interferes with the optimizations in the following commits.
This commit is contained in:
Nicholas Nethercote 2023-02-13 13:44:56 +11:00
parent 6e0115778b
commit 7439028374
5 changed files with 4 additions and 11 deletions
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2
compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
View file

@ -363,7 +363,7 @@ impl<'cx, 'tcx> TypeFolder<TyCtxt<'tcx>> for Canonicalizer<'cx, 'tcx> {
opportunistically resolved to {:?}",
vid, resolved_vid
);
let r = self.tcx.reuse_or_mk_region(r, ty::ReVar(resolved_vid));
let r = self.tcx.mk_region(ty::ReVar(resolved_vid));
self.canonicalize_mode.canonicalize_free_region(self, r)
}

2
compiler/rustc_infer/src/infer/region_constraints/mod.rs
View file

@ -651,7 +651,7 @@ impl<'tcx> RegionConstraintCollector<'_, 'tcx> {
let unified_region = self.unification_table().probe_value(rid);
unified_region.0.unwrap_or_else(|| {
let root = self.unification_table().find(rid).vid;
tcx.reuse_or_mk_region(region, ty::ReVar(root))
tcx.mk_region(ty::ReVar(root))
})
}
_ => region,

2
compiler/rustc_infer/src/infer/resolve.rs
View file

@ -95,7 +95,7 @@ impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for OpportunisticRegionResolver<'a, 'tcx
.borrow_mut()
.unwrap_region_constraints()
.opportunistic_resolve_var(rid);
TypeFolder::interner(self).reuse_or_mk_region(r, ty::ReVar(resolved))
TypeFolder::interner(self).mk_region(ty::ReVar(resolved))
}
_ => r,
}