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, 50 insertions, 0 deletions

diff --git a/tests/codegen/float_math.rs b/tests/codegen/float_math.rs
new file mode 100644
index 00000000000..592e09452df
--- /dev/null
+++ b/tests/codegen/float_math.rs
@@ -0,0 +1,50 @@
+// 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)
+    }
+}