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Auto merge of #92805 - BoxyUwU:revert-lazy-anon-const-substs, r=lcnr

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partially revertish `lazily "compute" anon const default substs`

reverts #87280 except for some of the changes around `ty::Unevaluated` having a visitor and a generic for promoted
why revert: <https://github.com/rust-lang/rust/pull/92805#issuecomment-1010736049>

r? `@lcnr`
This commit is contained in:
bors 2022-01-16 11:19:21 +00:00
commit 7be8693984
123 changed files with 405 additions and 886 deletions
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3
compiler/rustc_trait_selection/src/traits/structural_match.rs
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@ -130,9 +130,6 @@ impl<'a, 'tcx> Search<'a, 'tcx> {
impl<'a, 'tcx> TypeVisitor<'tcx> for Search<'a, 'tcx> {
type BreakTy = NonStructuralMatchTy<'tcx>;
fn tcx_for_anon_const_substs(&self) -> Option<TyCtxt<'tcx>> {
Some(self.tcx())
}
fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
debug!("Search visiting ty: {:?}", ty);