Auto merge of #80566 - Dylan-DPC:rollup-rns6est, r=Dylan-DPC

Rollup of 8 pull requests

Successful merges:

 - #80323 (Update and improve `rustc_codegen_{llvm,ssa}` docs)
 - #80368 (rustdoc: Render visibilities succinctly)
 - #80514 (Fix broken ./x.py install)
 - #80519 (Take type defaults into account in suggestions to reorder generic parameters)
 - #80526 (Update LLVM)
 - #80532 (remove unnecessary trailing semicolon from bootstrap)
 - #80548 (FIx ICE on wf check for foreign fns)
 - #80551 (support pattern as const parents in type_of)

Failed merges:

 - #80547 (In which we start to parse const generics defaults)

r? `@ghost`
`@rustbot` modify labels: rollup

15 files changed, 183 insertions, 42 deletions

diff --git a/src/test/rustdoc/pub-restricted.rs b/src/test/rustdoc/pub-restricted.rs
deleted file mode 100644
index 6720d848ac3..00000000000
--- a/src/test/rustdoc/pub-restricted.rs
+++ /dev/null
@@ -1,32 +0,0 @@
-// compile-flags: --document-private-items
-
-#![feature(crate_visibility_modifier)]
-
-#![crate_name = "foo"]
-
-// @has 'foo/struct.FooPublic.html' '//pre' 'pub struct FooPublic'
-pub struct FooPublic;
-// @has 'foo/struct.FooJustCrate.html' '//pre' 'pub(crate) struct FooJustCrate'
-crate struct FooJustCrate;
-// @has 'foo/struct.FooPubCrate.html' '//pre' 'pub(crate) struct FooPubCrate'
-pub(crate) struct FooPubCrate;
-// @has 'foo/struct.FooSelf.html' '//pre' 'pub(crate) struct FooSelf'
-pub(self) struct FooSelf;
-// @has 'foo/struct.FooInSelf.html' '//pre' 'pub(crate) struct FooInSelf'
-pub(in self) struct FooInSelf;
-mod a {
-    // @has 'foo/a/struct.FooSuper.html' '//pre' 'pub(crate) struct FooSuper'
-    pub(super) struct FooSuper;
-    // @has 'foo/a/struct.FooInSuper.html' '//pre' 'pub(crate) struct FooInSuper'
-    pub(in super) struct FooInSuper;
-    // @has 'foo/a/struct.FooInA.html' '//pre' 'pub(in a) struct FooInA'
-    pub(in a) struct FooInA;
-    mod b {
-        // @has 'foo/a/b/struct.FooInSelfSuperB.html' '//pre' 'pub(in a::b) struct FooInSelfSuperB'
-        pub(in a::b) struct FooInSelfSuperB;
-        // @has 'foo/a/b/struct.FooInSuperSuper.html' '//pre' 'pub(crate) struct FooInSuperSuper'
-        pub(in super::super) struct FooInSuperSuper;
-        // @has 'foo/a/b/struct.FooInAB.html' '//pre' 'pub(in a::b) struct FooInAB'
-        pub(in a::b) struct FooInAB;
-    }
-}
diff --git a/src/test/rustdoc/visibility.rs b/src/test/rustdoc/visibility.rs
new file mode 100644
index 00000000000..59427693c5a
--- /dev/null
+++ b/src/test/rustdoc/visibility.rs
@@ -0,0 +1,44 @@
+// compile-flags: --document-private-items
+
+#![feature(crate_visibility_modifier)]
+
+#![crate_name = "foo"]
+
+// @has 'foo/struct.FooPublic.html' '//pre' 'pub struct FooPublic'
+pub struct FooPublic;
+// @has 'foo/struct.FooJustCrate.html' '//pre' 'pub(crate) struct FooJustCrate'
+crate struct FooJustCrate;
+// @has 'foo/struct.FooPubCrate.html' '//pre' 'pub(crate) struct FooPubCrate'
+pub(crate) struct FooPubCrate;
+// @has 'foo/struct.FooSelf.html' '//pre' 'pub(crate) struct FooSelf'
+pub(self) struct FooSelf;
+// @has 'foo/struct.FooInSelf.html' '//pre' 'pub(crate) struct FooInSelf'
+pub(in self) struct FooInSelf;
+// @has 'foo/struct.FooPriv.html' '//pre' 'pub(crate) struct FooPriv'
+struct FooPriv;
+
+mod a {
+    // @has 'foo/a/struct.FooASuper.html' '//pre' 'pub(crate) struct FooASuper'
+    pub(super) struct FooASuper;
+    // @has 'foo/a/struct.FooAInSuper.html' '//pre' 'pub(crate) struct FooAInSuper'
+    pub(in super) struct FooAInSuper;
+    // @has 'foo/a/struct.FooAInA.html' '//pre' 'struct FooAInA'
+    // @!has 'foo/a/struct.FooAInA.html' '//pre' 'pub'
+    pub(in a) struct FooAInA;
+    // @has 'foo/a/struct.FooAPriv.html' '//pre' 'struct FooAPriv'
+    // @!has 'foo/a/struct.FooAPriv.html' '//pre' 'pub'
+    struct FooAPriv;
+
+    mod b {
+        // @has 'foo/a/b/struct.FooBSuper.html' '//pre' 'pub(super) struct FooBSuper'
+        pub(super) struct FooBSuper;
+        // @has 'foo/a/b/struct.FooBInSuperSuper.html' '//pre' 'pub(crate) struct FooBInSuperSuper'
+        pub(in super::super) struct FooBInSuperSuper;
+        // @has 'foo/a/b/struct.FooBInAB.html' '//pre' 'struct FooBInAB'
+        // @!has 'foo/a/b/struct.FooBInAB.html' '//pre' 'pub'
+        pub(in a::b) struct FooBInAB;
+        // @has 'foo/a/b/struct.FooBPriv.html' '//pre' 'struct FooBPriv'
+        // @!has 'foo/a/b/struct.FooBPriv.html' '//pre' 'pub'
+        struct FooBPriv;
+    }
+}
diff --git a/src/test/ui/const-generics/arg-in-pat-1.rs b/src/test/ui/const-generics/arg-in-pat-1.rs
new file mode 100644
index 00000000000..82555084e41
--- /dev/null
+++ b/src/test/ui/const-generics/arg-in-pat-1.rs
@@ -0,0 +1,23 @@
+// check-pass
+enum ConstGenericEnum<const N: usize> {
+    Foo([i32; N]),
+    Bar,
+}
+
+fn foo<const N: usize>(val: &ConstGenericEnum<N>) {
+    if let ConstGenericEnum::<N>::Foo(field, ..) = val {}
+}
+
+fn bar<const N: usize>(val: &ConstGenericEnum<N>) {
+    match val {
+        ConstGenericEnum::<N>::Foo(field, ..) => (),
+        ConstGenericEnum::<N>::Bar => (),
+    }
+}
+
+fn main() {
+    match ConstGenericEnum::Bar {
+        ConstGenericEnum::<3>::Foo(field, ..) => (),
+        ConstGenericEnum::<3>::Bar => (),
+    }
+}
diff --git a/src/test/ui/const-generics/arg-in-pat-2.rs b/src/test/ui/const-generics/arg-in-pat-2.rs
new file mode 100644
index 00000000000..dc9e722eda8
--- /dev/null
+++ b/src/test/ui/const-generics/arg-in-pat-2.rs
@@ -0,0 +1,10 @@
+// check-pass
+enum Generic<const N: usize> {
+    Variant,
+}
+
+fn main() {
+    match todo!() {
+        Generic::<0usize>::Variant => todo!()
+    }
+}
diff --git a/src/test/ui/const-generics/arg-in-pat-3.rs b/src/test/ui/const-generics/arg-in-pat-3.rs
new file mode 100644
index 00000000000..24626a3b68a
--- /dev/null
+++ b/src/test/ui/const-generics/arg-in-pat-3.rs
@@ -0,0 +1,43 @@
+// check-pass
+struct Foo<const N: usize>;
+
+fn bindingp() {
+    match Foo {
+        mut x @ Foo::<3> => {
+            let ref mut _x @ Foo::<3> = x;
+        }
+    }
+}
+
+struct Bar<const N: usize> {
+    field: Foo<N>,
+}
+
+fn structp() {
+    match todo!() {
+        Bar::<3> {
+            field: Foo::<3>,
+        } => (),
+    }
+}
+
+struct Baz<const N: usize>(Foo<N>);
+
+fn tuplestructp() {
+    match Baz(Foo) {
+        Baz::<3>(Foo::<3>) => (),
+    }
+}
+
+impl<const N: usize> Baz<N> {
+    const ASSOC: usize = 3;
+}
+
+fn pathp() {
+    match 3 {
+        Baz::<3>::ASSOC => (),
+        _ => (),
+    }
+}
+
+fn main() {}
diff --git a/src/test/ui/const-generics/defaults/complex-unord-param.min.stderr b/src/test/ui/const-generics/defaults/complex-unord-param.min.stderr
index cec56d7038a..8e8d26a0004 100644
--- a/src/test/ui/const-generics/defaults/complex-unord-param.min.stderr
+++ b/src/test/ui/const-generics/defaults/complex-unord-param.min.stderr
@@ -2,7 +2,7 @@ error: type parameters must be declared prior to const parameters
   --> $DIR/complex-unord-param.rs:8:41
    |
 LL | struct NestedArrays<'a, const N: usize, A: 'a, const M: usize, T:'a =u32> {
-   |                    ---------------------^----------------------^--------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, A: 'a, T: 'a, const N: usize, const M: usize>`
+   |                    ---------------------^----------------------^--------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, A: 'a, T: 'a = u32, const N: usize, const M: usize>`
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/const-generics/defaults/intermixed-lifetime.full.stderr b/src/test/ui/const-generics/defaults/intermixed-lifetime.full.stderr
index 98352addaef..c4a666a829d 100644
--- a/src/test/ui/const-generics/defaults/intermixed-lifetime.full.stderr
+++ b/src/test/ui/const-generics/defaults/intermixed-lifetime.full.stderr
@@ -2,13 +2,13 @@ error: lifetime parameters must be declared prior to const parameters
   --> $DIR/intermixed-lifetime.rs:6:28
    |
 LL | struct Foo<const N: usize, 'a, T = u32>(&'a (), T);
-   |           -----------------^^---------- help: reorder the parameters: lifetimes, then consts and types: `<'a, const N: usize, T>`
+   |           -----------------^^---------- help: reorder the parameters: lifetimes, then consts and types: `<'a, const N: usize, T = u32>`
 
 error: lifetime parameters must be declared prior to type parameters
   --> $DIR/intermixed-lifetime.rs:10:37
    |
 LL | struct Bar<const N: usize, T = u32, 'a>(&'a (), T);
-   |           --------------------------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, const N: usize, T>`
+   |           --------------------------^^- help: reorder the parameters: lifetimes, then consts and types: `<'a, const N: usize, T = u32>`
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/const-generics/defaults/intermixed-lifetime.min.stderr b/src/test/ui/const-generics/defaults/intermixed-lifetime.min.stderr
index 532f6d700b2..69a490978d1 100644
--- a/src/test/ui/const-generics/defaults/intermixed-lifetime.min.stderr
+++ b/src/test/ui/const-generics/defaults/intermixed-lifetime.min.stderr
@@ -2,25 +2,25 @@ error: lifetime parameters must be declared prior to const parameters
   --> $DIR/intermixed-lifetime.rs:6:28
    |
 LL | struct Foo<const N: usize, 'a, T = u32>(&'a (), T);
-   |           -----------------^^---------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T, const N: usize>`
+   |           -----------------^^---------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = u32, const N: usize>`
 
 error: type parameters must be declared prior to const parameters
   --> $DIR/intermixed-lifetime.rs:6:32
    |
 LL | struct Foo<const N: usize, 'a, T = u32>(&'a (), T);
-   |           ---------------------^------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T, const N: usize>`
+   |           ---------------------^------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = u32, const N: usize>`
 
 error: lifetime parameters must be declared prior to const parameters
   --> $DIR/intermixed-lifetime.rs:10:37
    |
 LL | struct Bar<const N: usize, T = u32, 'a>(&'a (), T);
-   |           --------------------------^^- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T, const N: usize>`
+   |           --------------------------^^- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = u32, const N: usize>`
 
 error: type parameters must be declared prior to const parameters
   --> $DIR/intermixed-lifetime.rs:10:28
    |
 LL | struct Bar<const N: usize, T = u32, 'a>(&'a (), T);
-   |           -----------------^----------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T, const N: usize>`
+   |           -----------------^----------- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = u32, const N: usize>`
 
 error: aborting due to 4 previous errors
 
diff --git a/src/test/ui/const-generics/defaults/needs-feature.min.stderr b/src/test/ui/const-generics/defaults/needs-feature.min.stderr
index 86d6173fa02..a4006203e4a 100644
--- a/src/test/ui/const-generics/defaults/needs-feature.min.stderr
+++ b/src/test/ui/const-generics/defaults/needs-feature.min.stderr
@@ -2,7 +2,7 @@ error: type parameters must be declared prior to const parameters
   --> $DIR/needs-feature.rs:9:26
    |
 LL | struct A<const N: usize, T=u32>(T);
-   |         -----------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<T, const N: usize>`
+   |         -----------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<T = u32, const N: usize>`
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/const-generics/defaults/needs-feature.none.stderr b/src/test/ui/const-generics/defaults/needs-feature.none.stderr
index 86d6173fa02..a4006203e4a 100644
--- a/src/test/ui/const-generics/defaults/needs-feature.none.stderr
+++ b/src/test/ui/const-generics/defaults/needs-feature.none.stderr
@@ -2,7 +2,7 @@ error: type parameters must be declared prior to const parameters
   --> $DIR/needs-feature.rs:9:26
    |
 LL | struct A<const N: usize, T=u32>(T);
-   |         -----------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<T, const N: usize>`
+   |         -----------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<T = u32, const N: usize>`
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/const-generics/defaults/simple-defaults.min.stderr b/src/test/ui/const-generics/defaults/simple-defaults.min.stderr
index 01fb4210dd6..0746c64ac8c 100644
--- a/src/test/ui/const-generics/defaults/simple-defaults.min.stderr
+++ b/src/test/ui/const-generics/defaults/simple-defaults.min.stderr
@@ -2,7 +2,7 @@ error: type parameters must be declared prior to const parameters
   --> $DIR/simple-defaults.rs:8:40
    |
 LL | struct FixedOutput<'a, const N: usize, T=u32> {
-   |                   ---------------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T, const N: usize>`
+   |                   ---------------------^----- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = u32, const N: usize>`
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/issues/issue-80512-param-reordering-with-defaults.rs b/src/test/ui/issues/issue-80512-param-reordering-with-defaults.rs
new file mode 100644
index 00000000000..fe3e4fbc7e0
--- /dev/null
+++ b/src/test/ui/issues/issue-80512-param-reordering-with-defaults.rs
@@ -0,0 +1,4 @@
+#![crate_type = "lib"]
+
+struct S<T = (), 'a>(&'a T);
+//~^ ERROR lifetime parameters must be declared prior to type parameters
diff --git a/src/test/ui/issues/issue-80512-param-reordering-with-defaults.stderr b/src/test/ui/issues/issue-80512-param-reordering-with-defaults.stderr
new file mode 100644
index 00000000000..a1e9a903f81
--- /dev/null
+++ b/src/test/ui/issues/issue-80512-param-reordering-with-defaults.stderr
@@ -0,0 +1,8 @@
+error: lifetime parameters must be declared prior to type parameters
+  --> $DIR/issue-80512-param-reordering-with-defaults.rs:3:18
+   |
+LL | struct S<T = (), 'a>(&'a T);
+   |         ---------^^- help: reorder the parameters: lifetimes, then types, then consts: `<'a, T = ()>`
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.rs b/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.rs
new file mode 100644
index 00000000000..8386959cfb3
--- /dev/null
+++ b/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.rs
@@ -0,0 +1,17 @@
+// Regression test for #80468.
+
+#![crate_type = "lib"]
+
+pub trait Trait {}
+
+#[repr(transparent)]
+pub struct Wrapper<T: Trait>(T);
+
+#[repr(transparent)]
+pub struct Ref<'a>(&'a u8);
+
+impl Trait for Ref {} //~ ERROR:  implicit elided lifetime not allowed here
+
+extern "C" {
+    pub fn repro(_: Wrapper<Ref>); //~ ERROR: mismatched types
+}
diff --git a/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.stderr b/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.stderr
new file mode 100644
index 00000000000..bb839d0a5ec
--- /dev/null
+++ b/src/test/ui/wf/wf-in-foreign-fn-decls-issue-80468.stderr
@@ -0,0 +1,24 @@
+error[E0726]: implicit elided lifetime not allowed here
+  --> $DIR/wf-in-foreign-fn-decls-issue-80468.rs:13:16
+   |
+LL | impl Trait for Ref {}
+   |                ^^^- help: indicate the anonymous lifetime: `<'_>`
+
+error[E0308]: mismatched types
+  --> $DIR/wf-in-foreign-fn-decls-issue-80468.rs:16:21
+   |
+LL |     pub fn repro(_: Wrapper<Ref>);
+   |                     ^^^^^^^^^^^^ lifetime mismatch
+   |
+   = note: expected trait `Trait`
+              found trait `Trait`
+note: the anonymous lifetime #1 defined on the method body at 16:5...
+  --> $DIR/wf-in-foreign-fn-decls-issue-80468.rs:16:5
+   |
+LL |     pub fn repro(_: Wrapper<Ref>);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: ...does not necessarily outlive the static lifetime
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.