Faster PartialOrd/Ord

Author: compiler-errors

Cargo.lock

@@ -1014,8 +1014,7 @@ dependencies = [
 [[package]]
 name = "derivative"
 version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
+source = "git+https://github.com/compiler-errors/rust-derivative.git?branch=fast-discriminant#fd1434ceff14441827f68505bc7f13e6d4eec6da"
 dependencies = [
  "proc-macro2",
  "quote",

compiler/rustc_type_ir/Cargo.toml

@@ -12,4 +12,4 @@ rustc_serialize = { path = "../rustc_serialize" }
 rustc_data_structures = { path = "../rustc_data_structures" }
 rustc_macros = { path = "../rustc_macros" }
 smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }
-derivative = "2.2.0"
+derivative = { git = "https://github.com/compiler-errors/rust-derivative.git", branch = "fast-discriminant" }

compiler/rustc_type_ir/src/const_kind.rs

@@ -17,9 +17,7 @@ use self::ConstKind::*;
     PartialEq(bound = ""),
     Eq(bound = ""),
     PartialOrd(bound = ""),
-    PartialOrd = "feature_allow_slow_enum",
     Ord(bound = ""),
-    Ord = "feature_allow_slow_enum",
     Hash(bound = "")
 )]
 pub enum ConstKind<I: Interner> {

compiler/rustc_type_ir/src/region_kind.rs

@@ -122,9 +122,7 @@ use self::RegionKind::*;
     PartialEq(bound = ""),
     Eq(bound = ""),
     PartialOrd(bound = ""),
-    PartialOrd = "feature_allow_slow_enum",
     Ord(bound = ""),
-    Ord = "feature_allow_slow_enum",
     Hash(bound = "")
 )]
 pub enum RegionKind<I: Interner> {

compiler/rustc_type_ir/src/ty_kind.rs

@@ -119,9 +119,7 @@ pub enum AliasKind {
     PartialEq(bound = ""),
     Eq(bound = ""),
     PartialOrd(bound = ""),
-    PartialOrd = "feature_allow_slow_enum",
     Ord(bound = ""),
-    Ord = "feature_allow_slow_enum",
     Hash(bound = "")
 )]
 pub enum TyKind<I: Interner> {

src/tools/tidy/src/extdeps.rs

@@ -4,7 +4,10 @@ use std::fs;
 use std::path::Path;
 
 /// List of allowed sources for packages.
-const ALLOWED_SOURCES: &[&str] = &["\"registry+https://github.com/rust-lang/crates.io-index\""];
+const ALLOWED_SOURCES: &[&str] = &[
+    "\"registry+https://github.com/rust-lang/crates.io-index\"",
+    "\"git+https://github.com/compiler-errors/rust-derivative.git?branch=fast-discriminant#fd1434ceff14441827f68505bc7f13e6d4eec6da\"",
+];
 
 /// Checks for external package sources. `root` is the path to the directory that contains the
 /// workspace `Cargo.toml`.