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, 22 deletions

diff --git a/src/test/codegen/link-dead-code.rs b/src/test/codegen/link-dead-code.rs
deleted file mode 100644
index de5a237c5f8..00000000000
--- a/src/test/codegen/link-dead-code.rs
+++ /dev/null
@@ -1,22 +0,0 @@
-// compile-flags:-Clink-dead-code
-
-#![crate_type = "rlib"]
-
-// This test makes sure that, when -Clink-dead-code is specified, we generate
-// code for functions that would otherwise be skipped.
-
-// CHECK-LABEL: ; link_dead_code::const_fn
-// CHECK-NEXT: ; Function Attrs:
-// CHECK-NEXT: define hidden
-const fn const_fn() -> i32 { 1 }
-
-// CHECK-LABEL: ; link_dead_code::inline_fn
-// CHECK-NEXT: ; Function Attrs:
-// CHECK-NEXT: define hidden
-#[inline]
-fn inline_fn() -> i32 { 2 }
-
-// CHECK-LABEL: ; link_dead_code::private_fn
-// CHECK-NEXT: ; Function Attrs:
-// CHECK-NEXT: define hidden
-fn private_fn() -> i32 { 3 }