From 59408add4d67e7e04fa1dcf378e4e1cc71c6ff48 Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Tue, 29 Oct 2024 20:08:55 +0000
Subject: Implement ~const Destruct in new solver

---
 compiler/rustc_middle/src/ty/adt.rs     | 12 ++++++++----
 compiler/rustc_middle/src/ty/context.rs |  5 +++++
 2 files changed, 13 insertions(+), 4 deletions(-)

(limited to 'compiler/rustc_middle/src')

diff --git a/compiler/rustc_middle/src/ty/adt.rs b/compiler/rustc_middle/src/ty/adt.rs
index 79d56702be2..447cbc8932e 100644
--- a/compiler/rustc_middle/src/ty/adt.rs
+++ b/compiler/rustc_middle/src/ty/adt.rs
@@ -18,6 +18,7 @@ use rustc_macros::{HashStable, TyDecodable, TyEncodable};
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::DataTypeKind;
 use rustc_span::symbol::sym;
+use rustc_type_ir::solve::AdtDestructorKind;
 use tracing::{debug, info, trace};
 
 use super::{
@@ -232,6 +233,13 @@ impl<'tcx> rustc_type_ir::inherent::AdtDef<TyCtxt<'tcx>> for AdtDef<'tcx> {
     fn is_fundamental(self) -> bool {
         self.is_fundamental()
     }
+
+    fn destructor(self, tcx: TyCtxt<'tcx>) -> Option<AdtDestructorKind> {
+        Some(match self.destructor(tcx)?.constness {
+            hir::Constness::Const => AdtDestructorKind::Const,
+            hir::Constness::NotConst => AdtDestructorKind::NotConst,
+        })
+    }
 }
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq, HashStable, TyEncodable, TyDecodable)]
@@ -402,10 +410,6 @@ impl<'tcx> AdtDef<'tcx> {
         self.destructor(tcx).is_some()
     }
 
-    pub fn has_non_const_dtor(self, tcx: TyCtxt<'tcx>) -> bool {
-        matches!(self.destructor(tcx), Some(Destructor { constness: hir::Constness::NotConst, .. }))
-    }
-
     /// Asserts this is a struct or union and returns its unique variant.
     pub fn non_enum_variant(self) -> &'tcx VariantDef {
         assert!(self.is_struct() || self.is_union());
diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs
index 55c29825fbc..4a0d50c153c 100644
--- a/compiler/rustc_middle/src/ty/context.rs
+++ b/compiler/rustc_middle/src/ty/context.rs
@@ -384,6 +384,10 @@ impl<'tcx> Interner for TyCtxt<'tcx> {
         self.is_conditionally_const(def_id)
     }
 
+    fn alias_has_const_conditions(self, def_id: DefId) -> bool {
+        self.is_conditionally_const(def_id)
+    }
+
     fn const_conditions(
         self,
         def_id: DefId,
@@ -663,6 +667,7 @@ bidirectional_lang_item_map! {
     CoroutineYield,
     Destruct,
     DiscriminantKind,
+    Drop,
     DynMetadata,
     Fn,
     FnMut,
-- 
cgit 1.4.1-3-g733a5