Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 0 insertions, 75 deletions

diff --git a/src/test/codegen/external-no-mangle-fns.rs b/src/test/codegen/external-no-mangle-fns.rs
deleted file mode 100644
index 70349b2ec4f..00000000000
--- a/src/test/codegen/external-no-mangle-fns.rs
+++ /dev/null
@@ -1,75 +0,0 @@
-// compile-flags: -C no-prepopulate-passes
-// `#[no_mangle]`d functions always have external linkage, i.e., no `internal` in their `define`s
-
-#![crate_type = "lib"]
-#![no_std]
-
-// CHECK: define{{( dso_local)?}} void @a()
-#[no_mangle]
-fn a() {}
-
-// CHECK: define{{( dso_local)?}} void @b()
-#[no_mangle]
-pub fn b() {}
-
-mod private {
-    // CHECK: define{{( dso_local)?}} void @c()
-    #[no_mangle]
-    fn c() {}
-
-    // CHECK: define{{( dso_local)?}} void @d()
-    #[no_mangle]
-    pub fn d() {}
-}
-
-const HIDDEN: () = {
-    // CHECK: define{{( dso_local)?}} void @e()
-    #[no_mangle]
-    fn e() {}
-
-    // CHECK: define{{( dso_local)?}} void @f()
-    #[no_mangle]
-    pub fn f() {}
-};
-
-// The surrounding item should not accidentally become external
-// CHECK-LABEL: ; external_no_mangle_fns::x
-// CHECK-NEXT: ; Function Attrs:
-// CHECK-NEXT: define internal
-#[inline(never)]
-fn x() {
-    // CHECK: define{{( dso_local)?}} void @g()
-    #[no_mangle]
-    fn g() {
-        x();
-    }
-
-    // CHECK: define{{( dso_local)?}} void @h()
-    #[no_mangle]
-    pub fn h() {}
-
-    // side effect to keep `x` around
-    unsafe {
-        core::ptr::read_volatile(&42);
-    }
-}
-
-// CHECK: define{{( dso_local)?}} void @i()
-#[no_mangle]
-#[inline]
-fn i() {}
-
-// CHECK: define{{( dso_local)?}} void @j()
-#[no_mangle]
-#[inline]
-pub fn j() {}
-
-// CHECK: define{{( dso_local)?}} void @k()
-#[no_mangle]
-#[inline(always)]
-fn k() {}
-
-// CHECK: define{{( dso_local)?}} void @l()
-#[no_mangle]
-#[inline(always)]
-pub fn l() {}