Auto merge of rust-lang#56864 - Zoxc:stable-hash-macro, r=michaelwoerister

Use derive macro for HashStable

Blocked on rust-lang#56795

Author: bors

src/librustc/hir/def.rs

@@ -3,12 +3,13 @@ use crate::util::nodemap::{NodeMap, DefIdMap};
 use syntax::ast;
 use syntax::ext::base::MacroKind;
 use syntax_pos::Span;
+use rustc_macros::HashStable;
 use crate::hir;
 use crate::ty;
 
 use self::Namespace::*;
 
-#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug, HashStable)]
 pub enum CtorKind {
     /// Constructor function automatically created by a tuple struct/variant.
     Fn,
@@ -18,7 +19,7 @@ pub enum CtorKind {
     Fictive,
 }
 
-#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug, HashStable)]
 pub enum NonMacroAttrKind {
     /// Single-segment attribute defined by the language (`#[inline]`)
     Builtin,
@@ -32,7 +33,7 @@ pub enum NonMacroAttrKind {
     Custom,
 }
 
-#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
+#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug, HashStable)]
 pub enum Def {
     // Type namespace
     Mod(DefId),
@@ -209,7 +210,7 @@ pub type ExportMap = DefIdMap<Vec<Export>>;
 /// namespace.
 pub type ImportMap = NodeMap<PerNS<Option<PathResolution>>>;
 
-#[derive(Copy, Clone, Debug, RustcEncodable, RustcDecodable)]
+#[derive(Copy, Clone, Debug, RustcEncodable, RustcDecodable, HashStable)]
 pub struct Export {
     /// The name of the target.
     pub ident: ast::Ident,