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, 72 deletions

diff --git a/src/test/codegen/c-variadic.rs b/src/test/codegen/c-variadic.rs
deleted file mode 100644
index a5be56c47be..00000000000
--- a/src/test/codegen/c-variadic.rs
+++ /dev/null
@@ -1,72 +0,0 @@
-// ignore-wasm32-bare compiled with panic=abort by default
-// compile-flags: -C no-prepopulate-passes
-//
-
-#![crate_type = "lib"]
-#![feature(c_variadic)]
-#![feature(c_unwind)]
-#![no_std]
-use core::ffi::VaList;
-
-extern "C" {
-    fn foreign_c_variadic_0(_: i32, ...);
-    fn foreign_c_variadic_1(_: VaList, ...);
-}
-
-pub unsafe extern "C" fn use_foreign_c_variadic_0() {
-    // Ensure that we correctly call foreign C-variadic functions.
-    // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM:i32( signext)?]] 0)
-    foreign_c_variadic_0(0);
-    // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42)
-    foreign_c_variadic_0(0, 42i32);
-    // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024)
-    foreign_c_variadic_0(0, 42i32, 1024i32);
-    // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024, [[PARAM]] 0)
-    foreign_c_variadic_0(0, 42i32, 1024i32, 0i32);
-}
-
-// Ensure that we do not remove the `va_list` passed to the foreign function when
-// removing the "spoofed" `VaListImpl` that is used by Rust defined C-variadics.
-pub unsafe extern "C" fn use_foreign_c_variadic_1_0(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap)
-    foreign_c_variadic_1(ap);
-}
-
-pub unsafe extern "C" fn use_foreign_c_variadic_1_1(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 42)
-    foreign_c_variadic_1(ap, 42i32);
-}
-pub unsafe extern "C" fn use_foreign_c_variadic_1_2(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 2, [[PARAM]] 42)
-    foreign_c_variadic_1(ap, 2i32, 42i32);
-}
-
-pub unsafe extern "C" fn use_foreign_c_variadic_1_3(ap: VaList) {
-    // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 2, [[PARAM]] 42, [[PARAM]] 0)
-    foreign_c_variadic_1(ap, 2i32, 42i32, 0i32);
-}
-
-// Ensure that `va_start` and `va_end` are properly injected.
-#[no_mangle]
-pub unsafe extern "C" fn c_variadic(n: i32, mut ap: ...) -> i32 {
-    // CHECK: call void @llvm.va_start
-    let mut sum = 0;
-    for _ in 0..n {
-        sum += ap.arg::<i32>();
-    }
-    sum
-    // CHECK: call void @llvm.va_end
-}
-
-// Ensure that we generate the correct `call` signature when calling a Rust
-// defined C-variadic.
-pub unsafe fn test_c_variadic_call() {
-    // CHECK: call [[RET:(signext )?i32]] (i32, ...) @c_variadic([[PARAM]] 0)
-    c_variadic(0);
-    // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42)
-    c_variadic(0, 42i32);
-    // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024)
-    c_variadic(0, 42i32, 1024i32);
-    // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024, [[PARAM]] 0)
-    c_variadic(0, 42i32, 1024i32, 0i32);
-}