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-rw-r--r--compiler/rustc_middle/src/traits/mod.rs39
-rw-r--r--compiler/rustc_middle/src/traits/structural_impls.rs10
2 files changed, 4 insertions, 45 deletions
diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs
index 98179c0f933..492b7228488 100644
--- a/compiler/rustc_middle/src/traits/mod.rs
+++ b/compiler/rustc_middle/src/traits/mod.rs
@@ -661,20 +661,6 @@ pub enum ImplSource<'tcx, N> {
     /// ImplSource for trait upcasting coercion
     TraitUpcasting(ImplSourceTraitUpcastingData<N>),
 
-    /// ImplSource automatically generated for a closure. The `DefId` is the ID
-    /// of the closure expression. This is an `ImplSource::UserDefined` in spirit, but the
-    /// impl is generated by the compiler and does not appear in the source.
-    Closure(Vec<N>),
-
-    /// Same as above, but for a function pointer type with the given signature.
-    FnPointer(Vec<N>),
-
-    /// ImplSource automatically generated for a generator.
-    Generator(Vec<N>),
-
-    /// ImplSource automatically generated for a generator backing an async future.
-    Future(Vec<N>),
-
     /// ImplSource for a trait alias.
     TraitAlias(ImplSourceTraitAliasData<'tcx, N>),
 }
@@ -683,12 +669,7 @@ impl<'tcx, N> ImplSource<'tcx, N> {
     pub fn nested_obligations(self) -> Vec<N> {
         match self {
             ImplSource::UserDefined(i) => i.nested,
-            ImplSource::Param(n, _)
-            | ImplSource::Builtin(n)
-            | ImplSource::FnPointer(n)
-            | ImplSource::Closure(n)
-            | ImplSource::Generator(n)
-            | ImplSource::Future(n) => n,
+            ImplSource::Param(n, _) | ImplSource::Builtin(n) => n,
             ImplSource::Object(d) => d.nested,
             ImplSource::TraitAlias(d) => d.nested,
             ImplSource::TraitUpcasting(d) => d.nested,
@@ -698,12 +679,7 @@ impl<'tcx, N> ImplSource<'tcx, N> {
     pub fn borrow_nested_obligations(&self) -> &[N] {
         match self {
             ImplSource::UserDefined(i) => &i.nested,
-            ImplSource::Param(n, _)
-            | ImplSource::Builtin(n)
-            | ImplSource::FnPointer(n)
-            | ImplSource::Closure(n)
-            | ImplSource::Generator(n)
-            | ImplSource::Future(n) => &n,
+            ImplSource::Param(n, _) | ImplSource::Builtin(n) => &n,
             ImplSource::Object(d) => &d.nested,
             ImplSource::TraitAlias(d) => &d.nested,
             ImplSource::TraitUpcasting(d) => &d.nested,
@@ -713,12 +689,7 @@ impl<'tcx, N> ImplSource<'tcx, N> {
     pub fn borrow_nested_obligations_mut(&mut self) -> &mut [N] {
         match self {
             ImplSource::UserDefined(i) => &mut i.nested,
-            ImplSource::Param(n, _)
-            | ImplSource::Builtin(n)
-            | ImplSource::FnPointer(n)
-            | ImplSource::Closure(n)
-            | ImplSource::Generator(n)
-            | ImplSource::Future(n) => n,
+            ImplSource::Param(n, _) | ImplSource::Builtin(n) => n,
             ImplSource::Object(d) => &mut d.nested,
             ImplSource::TraitAlias(d) => &mut d.nested,
             ImplSource::TraitUpcasting(d) => &mut d.nested,
@@ -742,10 +713,6 @@ impl<'tcx, N> ImplSource<'tcx, N> {
                 vtable_base: o.vtable_base,
                 nested: o.nested.into_iter().map(f).collect(),
             }),
-            ImplSource::Closure(n) => ImplSource::Closure(n.into_iter().map(f).collect()),
-            ImplSource::Generator(n) => ImplSource::Generator(n.into_iter().map(f).collect()),
-            ImplSource::Future(n) => ImplSource::Future(n.into_iter().map(f).collect()),
-            ImplSource::FnPointer(n) => ImplSource::FnPointer(n.into_iter().map(f).collect()),
             ImplSource::TraitAlias(d) => ImplSource::TraitAlias(ImplSourceTraitAliasData {
                 alias_def_id: d.alias_def_id,
                 substs: d.substs,
diff --git a/compiler/rustc_middle/src/traits/structural_impls.rs b/compiler/rustc_middle/src/traits/structural_impls.rs
index bc0e656a656..ac02d6ed62f 100644
--- a/compiler/rustc_middle/src/traits/structural_impls.rs
+++ b/compiler/rustc_middle/src/traits/structural_impls.rs
@@ -9,13 +9,7 @@ impl<'tcx, N: fmt::Debug> fmt::Debug for traits::ImplSource<'tcx, N> {
         match *self {
             super::ImplSource::UserDefined(ref v) => write!(f, "{:?}", v),
 
-            super::ImplSource::Closure(ref d) => write!(f, "{:?}", d),
-
-            super::ImplSource::Generator(ref d) => write!(f, "{:?}", d),
-
-            super::ImplSource::Future(ref d) => write!(f, "{:?}", d),
-
-            super::ImplSource::FnPointer(ref d) => write!(f, "({:?})", d),
+            super::ImplSource::Builtin(ref d) => write!(f, "{:?}", d),
 
             super::ImplSource::Object(ref d) => write!(f, "{:?}", d),
 
@@ -23,8 +17,6 @@ impl<'tcx, N: fmt::Debug> fmt::Debug for traits::ImplSource<'tcx, N> {
                 write!(f, "ImplSourceParamData({:?}, {:?})", n, ct)
             }
 
-            super::ImplSource::Builtin(ref d) => write!(f, "{:?}", d),
-
             super::ImplSource::TraitAlias(ref d) => write!(f, "{:?}", d),
 
             super::ImplSource::TraitUpcasting(ref d) => write!(f, "{:?}", d),