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, 50 deletions

diff --git a/src/test/codegen/float_math.rs b/src/test/codegen/float_math.rs
deleted file mode 100644
index 592e09452df..00000000000
--- a/src/test/codegen/float_math.rs
+++ /dev/null
@@ -1,50 +0,0 @@
-// compile-flags: -C no-prepopulate-passes
-
-#![crate_type = "lib"]
-#![feature(core_intrinsics)]
-
-use std::intrinsics::{fadd_fast, fsub_fast, fmul_fast, fdiv_fast, frem_fast};
-
-// CHECK-LABEL: @add
-#[no_mangle]
-pub fn add(x: f32, y: f32) -> f32 {
-// CHECK: fadd float
-// CHECK-NOT: fast
-    x + y
-}
-
-// CHECK-LABEL: @addition
-#[no_mangle]
-pub fn addition(x: f32, y: f32) -> f32 {
-// CHECK: fadd fast float
-    unsafe {
-        fadd_fast(x, y)
-    }
-}
-
-// CHECK-LABEL: @subtraction
-#[no_mangle]
-pub fn subtraction(x: f32, y: f32) -> f32 {
-// CHECK: fsub fast float
-    unsafe {
-        fsub_fast(x, y)
-    }
-}
-
-// CHECK-LABEL: @multiplication
-#[no_mangle]
-pub fn multiplication(x: f32, y: f32) -> f32 {
-// CHECK: fmul fast float
-    unsafe {
-        fmul_fast(x, y)
-    }
-}
-
-// CHECK-LABEL: @division
-#[no_mangle]
-pub fn division(x: f32, y: f32) -> f32 {
-// CHECK: fdiv fast float
-    unsafe {
-        fdiv_fast(x, y)
-    }
-}