Auto merge of #54021 - kennytm:rollup, r=kennytm

Rollup of 17 pull requests

Successful merges:

 - #53299 (Updated core/macros.rs to note it works in a no_std environment.)
 - #53376 (Cross reference io::copy and fs::copy in docs.)
 - #53455 (Individual docs for {from,to}_*_bytes)
 - #53550 (librustc_lint: In recursion warning, change 'recurring' to 'recursing')
 - #53860 (Migrate (some) of run-pass/ to ui)
 - #53874 (Implement Unpin for Box, Rc, and Arc)
 - #53895 (tidy: Cleanups and clippy warning fixes)
 - #53946 (Clarify `ManuallyDrop` docs)
 - #53948 (Minimized clippy test from when NLL disabled two-phase borrows)
 - #53959 (Add .git extension to submodule paths missing it)
 - #53966 (A few cleanups and minor improvements to mir/dataflow)
 - #53967 (propagate build.python into cmake)
 - #53979 (Remove `#[repr(transparent)]` from atomics)
 - #53991 (Add unchecked_shl/shr check for intrinsics to fix miri's test suit)
 - #53992 (migrate run-pass/borrowck to ui/run-pass)
 - #53994 (migrate run-pass/*/ to ui/run-pass)
 - #54023 (update clippy submodule)

9 files changed, 0 insertions, 228 deletions

diff --git a/src/test/run-pass/thinlto/all-crates.rs b/src/test/run-pass/thinlto/all-crates.rs
deleted file mode 100644
index 8d68202d711..00000000000
--- a/src/test/run-pass/thinlto/all-crates.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// compile-flags: -Clto=thin
-// no-prefer-dynamic
-
-fn main() {
-    println!("hello!");
-}
diff --git a/src/test/run-pass/thinlto/auxiliary/dylib.rs b/src/test/run-pass/thinlto/auxiliary/dylib.rs
deleted file mode 100644
index cdb3f49cae8..00000000000
--- a/src/test/run-pass/thinlto/auxiliary/dylib.rs
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// compile-flags: -Z thinlto -C codegen-units=8
-
-#[inline]
-pub fn foo(b: u8) {
-    b.to_string();
-}
diff --git a/src/test/run-pass/thinlto/auxiliary/msvc-imp-present.rs b/src/test/run-pass/thinlto/auxiliary/msvc-imp-present.rs
deleted file mode 100644
index eff7802a245..00000000000
--- a/src/test/run-pass/thinlto/auxiliary/msvc-imp-present.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// no-prefer-dynamic
-// compile-flags: -Z thinlto -C codegen-units=8 -C prefer-dynamic
-
-#![crate_type = "rlib"]
-#![crate_type = "dylib"]
-
-pub static A: u32 = 43;
-
-pub mod a {
-    pub static A: u32 = 43;
-}
diff --git a/src/test/run-pass/thinlto/auxiliary/thin-lto-inlines-aux.rs b/src/test/run-pass/thinlto/auxiliary/thin-lto-inlines-aux.rs
deleted file mode 100644
index ccbb0e7a718..00000000000
--- a/src/test/run-pass/thinlto/auxiliary/thin-lto-inlines-aux.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// no-prefer-dynamic
-
-#![crate_type = "rlib"]
-
-pub fn bar() -> u32 {
-    3
-}
diff --git a/src/test/run-pass/thinlto/dylib-works.rs b/src/test/run-pass/thinlto/dylib-works.rs
deleted file mode 100644
index 06df40f6142..00000000000
--- a/src/test/run-pass/thinlto/dylib-works.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// aux-build:dylib.rs
-
-extern crate dylib;
-
-fn main() {
-    dylib::foo(1);
-}
diff --git a/src/test/run-pass/thinlto/msvc-imp-present.rs b/src/test/run-pass/thinlto/msvc-imp-present.rs
deleted file mode 100644
index 95cff2a2862..00000000000
--- a/src/test/run-pass/thinlto/msvc-imp-present.rs
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// aux-build:msvc-imp-present.rs
-// compile-flags: -Z thinlto -C codegen-units=8
-// no-prefer-dynamic
-
-// On MSVC we have a "hack" where we emit symbols that look like `_imp_$name`
-// for all exported statics. This is done because we apply `dllimport` to all
-// imported constants and this allows everything to actually link correctly.
-//
-// The ThinLTO passes aggressively remove symbols if they can, and this test
-// asserts that the ThinLTO passes don't remove these compiler-generated
-// `_imp_*` symbols. The external library that we link in here is compiled with
-// ThinLTO and multiple codegen units and has a few exported constants. Note
-// that we also namely compile the library as both a dylib and an rlib, but we
-// link the rlib to ensure that we assert those generated symbols exist.
-
-extern crate msvc_imp_present as bar;
-
-fn main() {
-    println!("{}", bar::A);
-}
diff --git a/src/test/run-pass/thinlto/thin-lto-inlines.rs b/src/test/run-pass/thinlto/thin-lto-inlines.rs
deleted file mode 100644
index 41ca983af51..00000000000
--- a/src/test/run-pass/thinlto/thin-lto-inlines.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// compile-flags: -Z thinlto -C codegen-units=8 -O
-// ignore-emscripten can't inspect instructions on emscripten
-
-// We want to assert here that ThinLTO will inline across codegen units. There's
-// not really a great way to do that in general so we sort of hack around it by
-// praying two functions go into separate codegen units and then assuming that
-// if inlining *doesn't* happen the first byte of the functions will differ.
-
-pub fn foo() -> u32 {
-    bar::bar()
-}
-
-mod bar {
-    pub fn bar() -> u32 {
-        3
-    }
-}
-
-fn main() {
-    println!("{} {}", foo(), bar::bar());
-
-    unsafe {
-        let foo = foo as usize as *const u8;
-        let bar = bar::bar as usize as *const u8;
-
-        assert_eq!(*foo, *bar);
-    }
-}
diff --git a/src/test/run-pass/thinlto/thin-lto-inlines2.rs b/src/test/run-pass/thinlto/thin-lto-inlines2.rs
deleted file mode 100644
index 3c0e904662a..00000000000
--- a/src/test/run-pass/thinlto/thin-lto-inlines2.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// compile-flags: -C codegen-units=8 -O -C lto=thin
-// aux-build:thin-lto-inlines-aux.rs
-// no-prefer-dynamic
-// ignore-emscripten can't inspect instructions on emscripten
-
-// We want to assert here that ThinLTO will inline across codegen units. There's
-// not really a great way to do that in general so we sort of hack around it by
-// praying two functions go into separate codegen units and then assuming that
-// if inlining *doesn't* happen the first byte of the functions will differ.
-
-extern crate thin_lto_inlines_aux as bar;
-
-pub fn foo() -> u32 {
-    bar::bar()
-}
-
-fn main() {
-    println!("{} {}", foo(), bar::bar());
-
-    unsafe {
-        let foo = foo as usize as *const u8;
-        let bar = bar::bar as usize as *const u8;
-
-        assert_eq!(*foo, *bar);
-    }
-}
-
diff --git a/src/test/run-pass/thinlto/weak-works.rs b/src/test/run-pass/thinlto/weak-works.rs
deleted file mode 100644
index 0a1b7307a46..00000000000
--- a/src/test/run-pass/thinlto/weak-works.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// compile-flags: -C codegen-units=8 -Z thinlto
-// ignore-windows
-
-#![feature(linkage)]
-
-pub mod foo {
-    #[linkage = "weak"]
-    #[no_mangle]
-    pub extern "C" fn FOO() -> i32 {
-        0
-    }
-}
-
-mod bar {
-    extern "C" {
-        fn FOO() -> i32;
-    }
-
-    pub fn bar() -> i32 {
-        unsafe { FOO() }
-    }
-}
-
-fn main() {
-    bar::bar();
-}