X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_middle%2Fsrc%2Fmir%2Fmod.rs;h=b1ab0f5b533dd95eb47b5ab17c186cbc078f9c0c;hb=55d55136629ddafa712480a6937a2d3654ce3c55;hp=3f4bbdec31545ae4b334513a8a09f769cef784a0;hpb=f372476d2cd19fbd4baff24e767f5ee3d8264b49;p=rust.git

diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs
index 3f4bbdec315..b1ab0f5b533 100644
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -162,7 +162,7 @@ pub fn phase_index(&self) -> usize {
 }
 
 /// Where a specific `mir::Body` comes from.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
 #[derive(HashStable, TyEncodable, TyDecodable, TypeFoldable)]
 pub struct MirSource<'tcx> {
     pub instance: InstanceDef<'tcx>,
@@ -619,20 +619,20 @@ fn encode(&self, e: &mut E) -> Result<(), E::Error> {
 }
 impl<'tcx, D: TyDecoder<'tcx>, T: Decodable<D>> Decodable<D> for ClearCrossCrate<T> {
     #[inline]
-    fn decode(d: &mut D) -> Result<ClearCrossCrate<T>, D::Error> {
+    fn decode(d: &mut D) -> ClearCrossCrate<T> {
         if D::CLEAR_CROSS_CRATE {
-            return Ok(ClearCrossCrate::Clear);
+            return ClearCrossCrate::Clear;
         }
 
-        let discr = u8::decode(d)?;
+        let discr = u8::decode(d);
 
         match discr {
-            TAG_CLEAR_CROSS_CRATE_CLEAR => Ok(ClearCrossCrate::Clear),
+            TAG_CLEAR_CROSS_CRATE_CLEAR => ClearCrossCrate::Clear,
             TAG_CLEAR_CROSS_CRATE_SET => {
-                let val = T::decode(d)?;
-                Ok(ClearCrossCrate::Set(val))
+                let val = T::decode(d);
+                ClearCrossCrate::Set(val)
             }
-            tag => Err(d.error(&format!("Invalid tag for ClearCrossCrate: {:?}", tag))),
+            tag => panic!("Invalid tag for ClearCrossCrate: {:?}", tag),
         }
     }
 }
@@ -894,7 +894,7 @@ pub struct LocalDecl<'tcx> {
     /// across a suspension point against the type components of the generator
     /// which type checking knows are live across a suspension point. We need to
     /// flag drop flags to avoid triggering this check as they are introduced
-    /// after typeck.
+    /// outside of type inference.
     ///
     /// This should be sound because the drop flags are fully algebraic, and
     /// therefore don't affect the auto-trait or outlives properties of the
@@ -1255,17 +1255,7 @@ pub enum AssertKind<O> {
     ResumedAfterPanic(GeneratorKind),
 }
 
-#[derive(
-    Clone,
-    Debug,
-    PartialEq,
-    PartialOrd,
-    TyEncodable,
-    TyDecodable,
-    Hash,
-    HashStable,
-    TypeFoldable
-)]
+#[derive(Clone, Debug, PartialEq, TyEncodable, TyDecodable, Hash, HashStable, TypeFoldable)]
 pub enum InlineAsmOperand<'tcx> {
     In {
         reg: InlineAsmRegOrRegClass,
@@ -1747,7 +1737,7 @@ pub struct CopyNonOverlapping<'tcx> {
 
 /// A path to a value; something that can be evaluated without
 /// changing or disturbing program state.
-#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, HashStable)]
+#[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, HashStable)]
 pub struct Place<'tcx> {
     pub local: Local,
 
@@ -2072,7 +2062,7 @@ pub struct SourceScopeLocalData {
 
 /// These are values that can appear inside an rvalue. They are intentionally
 /// limited to prevent rvalues from being nested in one another.
-#[derive(Clone, PartialEq, PartialOrd, TyEncodable, TyDecodable, Hash, HashStable)]
+#[derive(Clone, PartialEq, TyEncodable, TyDecodable, Hash, HashStable)]
 pub enum Operand<'tcx> {
     /// Copy: The value must be available for use afterwards.
     ///
@@ -2500,7 +2490,7 @@ fn fmt(&self, fmt: &mut Formatter<'_>) -> fmt::Result {
 /// this does not necessarily mean that they are `==` in Rust. In
 /// particular, one must be wary of `NaN`!
 
-#[derive(Clone, Copy, PartialEq, PartialOrd, TyEncodable, TyDecodable, Hash, HashStable)]
+#[derive(Clone, Copy, PartialEq, TyEncodable, TyDecodable, Hash, HashStable)]
 pub struct Constant<'tcx> {
     pub span: Span,
 
@@ -2514,7 +2504,7 @@ pub struct Constant<'tcx> {
     pub literal: ConstantKind<'tcx>,
 }
 
-#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, TyEncodable, TyDecodable, Hash, HashStable, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, TyEncodable, TyDecodable, Hash, HashStable, Debug)]
 #[derive(Lift)]
 pub enum ConstantKind<'tcx> {
     /// This constant came from the type system