Auto merge of #108020 - nnethercote:opt-mk_region, r=compiler-errors
Optimize `mk_region` PR #107869 avoiding some interning under `mk_ty` by special-casing `Ty` variants with simple (integer) bodies. This PR does something similar for regions. r? `@compiler-errors`
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commit
c5d1b3ea96
40 changed files with 254 additions and 186 deletions
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@ -70,7 +70,7 @@ fn fn_sig_for_fn_abi<'tcx>(
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var: ty::BoundVar::from_usize(bound_vars.len() - 1),
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kind: ty::BoundRegionKind::BrEnv,
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};
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let env_region = ty::ReLateBound(ty::INNERMOST, br);
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let env_region = tcx.mk_re_late_bound(ty::INNERMOST, br);
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let env_ty = tcx.closure_env_ty(def_id, substs, env_region).unwrap();
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let sig = sig.skip_binder();
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@ -95,8 +95,7 @@ fn fn_sig_for_fn_abi<'tcx>(
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var: ty::BoundVar::from_usize(bound_vars.len() - 1),
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kind: ty::BoundRegionKind::BrEnv,
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};
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let env_region = ty::ReLateBound(ty::INNERMOST, br);
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let env_ty = tcx.mk_mut_ref(tcx.mk_region(env_region), ty);
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let env_ty = tcx.mk_mut_ref(tcx.mk_re_late_bound(ty::INNERMOST, br), ty);
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let pin_did = tcx.require_lang_item(LangItem::Pin, None);
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let pin_adt_ref = tcx.adt_def(pin_did);
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