Auto merge of #58010 - Zoxc:parallel-passes, r=michaelwoerister

Move privacy checking later in the pipeline and make some passes run in parallel

r? @michaelwoerister

src/test/ui/error-codes/E0446.rs

@@ -1,4 +1,4 @@
-mod Foo {
+mod foo {
     struct Bar(u32);
 
     pub fn bar() -> Bar { //~ ERROR E0446

src/test/ui/error-codes/E0446.stderr

@@ -1,8 +1,8 @@
-error[E0446]: private type `Foo::Bar` in public interface
+error[E0446]: private type `foo::Bar` in public interface
   --> $DIR/E0446.rs:4:5
    |
 LL |       struct Bar(u32);
-   |       - `Foo::Bar` declared as private
+   |       - `foo::Bar` declared as private
 LL | 
 LL | /     pub fn bar() -> Bar { //~ ERROR E0446
 LL | |         Bar(0)

src/test/ui/error-codes/E0451.rs

@@ -1,4 +1,4 @@
-mod Bar {
+mod bar {
     pub struct Foo {
         pub a: isize,
         b: isize,
@@ -10,10 +10,10 @@ mod Bar {
     );
 }
 
-fn pat_match(foo: Bar::Foo) {
-    let Bar::Foo{a:a, b:b} = foo; //~ ERROR E0451
+fn pat_match(foo: bar::Foo) {
+    let bar::Foo{a, b} = foo; //~ ERROR E0451
 }
 
 fn main() {
-    let f = Bar::Foo{ a: 0, b: 0 }; //~ ERROR E0451
+    let f = bar::Foo{ a: 0, b: 0 }; //~ ERROR E0451
 }

src/test/ui/error-codes/E0451.stderr

@@ -1,13 +1,13 @@
-error[E0451]: field `b` of struct `Bar::Foo` is private
-  --> $DIR/E0451.rs:14:23
+error[E0451]: field `b` of struct `bar::Foo` is private
+  --> $DIR/E0451.rs:14:21
    |
-LL |     let Bar::Foo{a:a, b:b} = foo; //~ ERROR E0451
-   |                       ^^^ field `b` is private
+LL |     let bar::Foo{a, b} = foo; //~ ERROR E0451
+   |                     ^ field `b` is private
 
-error[E0451]: field `b` of struct `Bar::Foo` is private
+error[E0451]: field `b` of struct `bar::Foo` is private
   --> $DIR/E0451.rs:18:29
    |
-LL |     let f = Bar::Foo{ a: 0, b: 0 }; //~ ERROR E0451
+LL |     let f = bar::Foo{ a: 0, b: 0 }; //~ ERROR E0451
    |                             ^^^^ field `b` is private
 
 error: aborting due to 2 previous errors