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, 79 deletions

diff --git a/src/test/codegen/repr-transparent-aggregates-3.rs b/src/test/codegen/repr-transparent-aggregates-3.rs
deleted file mode 100644
index 0db17e6b13a..00000000000
--- a/src/test/codegen/repr-transparent-aggregates-3.rs
+++ /dev/null
@@ -1,79 +0,0 @@
-// compile-flags: -C no-prepopulate-passes
-//
-
-// only-mips64
-// See repr-transparent.rs
-
-#![feature(transparent_unions)]
-
-#![crate_type="lib"]
-
-
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub struct BigS([u32; 16]);
-
-#[repr(transparent)]
-pub struct TsBigS(BigS);
-
-#[repr(transparent)]
-pub union TuBigS {
-    field: BigS,
-}
-
-#[repr(transparent)]
-pub enum TeBigS {
-    Variant(BigS),
-}
-
-// CHECK: define void @test_BigS(%BigS* [[BIGS_RET_ATTRS1:.*]] sret(%BigS) [[BIGS_RET_ATTRS2:.*]], [8 x i64]
-#[no_mangle]
-pub extern fn test_BigS(_: BigS) -> BigS { loop {} }
-
-// CHECK: define void @test_TsBigS(%TsBigS* [[BIGS_RET_ATTRS1]] sret(%TsBigS) [[BIGS_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
-
-// CHECK: define void @test_TuBigS(%TuBigS* [[BIGS_RET_ATTRS1]] sret(%TuBigS) [[BIGS_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
-
-// CHECK: define void @test_TeBigS(%"TeBigS::Variant"* [[BIGS_RET_ATTRS1]] sret(%"TeBigS::Variant") [[BIGS_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
-
-
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub union BigU {
-    foo: [u32; 16],
-}
-
-#[repr(transparent)]
-pub struct TsBigU(BigU);
-
-#[repr(transparent)]
-pub union TuBigU {
-    field: BigU,
-}
-
-#[repr(transparent)]
-pub enum TeBigU {
-    Variant(BigU),
-}
-
-// CHECK: define void @test_BigU(%BigU* [[BIGU_RET_ATTRS1:.*]] sret(%BigU) [[BIGU_RET_ATTRS2:.*]], [8 x i64]
-#[no_mangle]
-pub extern fn test_BigU(_: BigU) -> BigU { loop {} }
-
-// CHECK: define void @test_TsBigU(%TsBigU* [[BIGU_RET_ATTRS1]] sret(%TsBigU) [[BIGU_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
-
-// CHECK: define void @test_TuBigU(%TuBigU* [[BIGU_RET_ATTRS1]] sret(%TuBigU) [[BIGU_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
-
-// CHECK: define void @test_TeBigU(%"TeBigU::Variant"* [[BIGU_RET_ATTRS1]] sret(%"TeBigU::Variant") [[BIGU_RET_ATTRS2]], [8 x i64]
-#[no_mangle]
-pub extern fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }