bjoernager/rust
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Make infer higher ranked equate use bidirectional subtyping in invariant context

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Santiago Pastorino 2023-11-27 22:36:39 -03:00
parent 384d26fc7e
commit 23ae3dbb31
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GPG key ID: 8131A24E0C79EFAF
15 changed files with 153 additions and 47 deletions
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10
compiler/rustc_hir_analysis/src/check/intrinsic.rs
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@ -168,6 +168,7 @@ pub fn check_intrinsic_type(
let name_str = intrinsic_name.as_str();
let bound_vars = tcx.mk_bound_variable_kinds(&[
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BrEnv),
]);
@ -181,7 +182,7 @@ pub fn check_intrinsic_type(
let env_region = ty::Region::new_bound(
tcx,
ty::INNERMOST,
ty::BoundRegion { var: ty::BoundVar::from_u32(1), kind: ty::BrEnv },
ty::BoundRegion { var: ty::BoundVar::from_u32(2), kind: ty::BrEnv },
);
let va_list_ty = tcx.type_of(did).instantiate(tcx, &[region.into()]);
(Ty::new_ref(tcx, env_region, ty::TypeAndMut { ty: va_list_ty, mutbl }), va_list_ty)
@ -493,9 +494,12 @@ pub fn check_intrinsic_type(
sym::raw_eq => {
let br = ty::BoundRegion { var: ty::BoundVar::from_u32(0), kind: ty::BrAnon };
let param_ty =
let param_ty_lhs =
Ty::new_imm_ref(tcx, ty::Region::new_bound(tcx, ty::INNERMOST, br), param(0));
(1, 0, vec![param_ty; 2], tcx.types.bool)
let br = ty::BoundRegion { var: ty::BoundVar::from_u32(1), kind: ty::BrAnon };
let param_ty_rhs =
Ty::new_imm_ref(tcx, ty::Region::new_bound(tcx, ty::INNERMOST, br), param(0));
(1, 0, vec![param_ty_lhs, param_ty_rhs], tcx.types.bool)
}
sym::black_box => (1, 0, vec![param(0)], param(0)),