Merging upstream version 1.74.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 26 deletions

diff --git a/compiler/rustc_type_ir/src/lib.rs b/compiler/rustc_type_ir/src/lib.rs
index b0f8ea7a0..83401b65c 100644
--- a/compiler/rustc_type_ir/src/lib.rs
+++ b/compiler/rustc_type_ir/src/lib.rs
@@ -6,7 +6,7 @@
 #![feature(unwrap_infallible)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
-#![cfg_attr(not(bootstrap), allow(internal_features))]
+#![allow(internal_features)]
 
 #[macro_use]
 extern crate bitflags;
@@ -41,7 +41,12 @@ pub trait HashStableContext {}
 
 pub trait Interner: Sized {
     type AdtDef: Clone + Debug + Hash + Ord;
-    type GenericArgsRef: Clone + DebugWithInfcx<Self> + Hash + Ord;
+    type GenericArgsRef: Clone
+        + DebugWithInfcx<Self>
+        + Hash
+        + Ord
+        + IntoIterator<Item = Self::GenericArg>;
+    type GenericArg: Clone + DebugWithInfcx<Self> + Hash + Ord;
     type DefId: Clone + Debug + Hash + Ord;
     type Binder<T>;
     type Ty: Clone + DebugWithInfcx<Self> + Hash + Ord;
@@ -294,6 +299,9 @@ bitflags! {
 
         /// Does this have `Generator` or `GeneratorWitness`?
         const HAS_TY_GENERATOR            = 1 << 23;
+
+        /// Does this have any binders with bound vars (e.g. that need to be anonymized)?
+        const HAS_BINDER_VARS             = 1 << 24;
     }
 }
 
@@ -574,16 +582,16 @@ rustc_index::newtype_index! {
     pub struct TyVid {}
 }
 
-/// An **int**egral (`u32`, `i32`, `usize`, etc.) type **v**ariable **ID**.
-#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)]
-pub struct IntVid {
-    pub index: u32,
+rustc_index::newtype_index! {
+    /// An **int**egral (`u32`, `i32`, `usize`, etc.) type **v**ariable **ID**.
+    #[debug_format = "?{}i"]
+    pub struct IntVid {}
 }
 
-/// An **float**ing-point (`f32` or `f64`) type **v**ariable **ID**.
-#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)]
-pub struct FloatVid {
-    pub index: u32,
+rustc_index::newtype_index! {
+    /// A **float**ing-point (`f32` or `f64`) type **v**ariable **ID**.
+    #[debug_format = "?{}f"]
+    pub struct FloatVid {}
 }
 
 /// A placeholder for a type that hasn't been inferred yet.
@@ -645,11 +653,11 @@ impl UnifyKey for IntVid {
     type Value = Option<IntVarValue>;
     #[inline] // make this function eligible for inlining - it is quite hot.
     fn index(&self) -> u32 {
-        self.index
+        self.as_u32()
     }
     #[inline]
     fn from_index(i: u32) -> IntVid {
-        IntVid { index: i }
+        IntVid::from_u32(i)
     }
     fn tag() -> &'static str {
         "IntVid"
@@ -662,11 +670,11 @@ impl UnifyKey for FloatVid {
     type Value = Option<FloatVarValue>;
     #[inline]
     fn index(&self) -> u32 {
-        self.index
+        self.as_u32()
     }
     #[inline]
     fn from_index(i: u32) -> FloatVid {
-        FloatVid { index: i }
+        FloatVid::from_u32(i)
     }
     fn tag() -> &'static str {
         "FloatVid"
@@ -770,18 +778,6 @@ impl fmt::Debug for FloatVarValue {
     }
 }
 
-impl fmt::Debug for IntVid {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "?{}i", self.index)
-    }
-}
-
-impl fmt::Debug for FloatVid {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "?{}f", self.index)
-    }
-}
-
 impl fmt::Debug for Variance {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.write_str(match *self {