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, 41 insertions, 0 deletions

diff --git a/tests/codegen/fastcall-inreg.rs b/tests/codegen/fastcall-inreg.rs
new file mode 100644
index 00000000000..d426ade28dd
--- /dev/null
+++ b/tests/codegen/fastcall-inreg.rs
@@ -0,0 +1,41 @@
+// Checks if the "fastcall" calling convention marks function arguments
+// as "inreg" like the C/C++ compilers for the platforms.
+// x86 only.
+
+// compile-flags: --target i686-unknown-linux-gnu -O -C no-prepopulate-passes
+// needs-llvm-components: x86
+
+#![crate_type = "lib"]
+#![no_core]
+#![feature(no_core, lang_items)]
+
+#[lang = "sized"]
+trait Sized {}
+#[lang = "copy"]
+trait Copy {}
+
+pub mod tests {
+    // CHECK: @f1(i32 inreg %_1, i32 inreg %_2, i32 %_3)
+    #[no_mangle]
+    pub extern "fastcall" fn f1(_: i32, _: i32, _: i32) {}
+
+    // CHECK: @f2({{i32\*|ptr}} inreg %_1, {{i32\*|ptr}} inreg %_2, {{i32\*|ptr}} %_3)
+    #[no_mangle]
+    pub extern "fastcall" fn f2(_: *const i32, _: *const i32, _: *const i32) {}
+
+    // CHECK: @f3(float %_1, i32 inreg %_2, i32 inreg %_3, i32 %_4)
+    #[no_mangle]
+    pub extern "fastcall" fn f3(_: f32, _: i32, _: i32, _: i32) {}
+
+    // CHECK: @f4(i32 inreg %_1, float %_2, i32 inreg %_3, i32 %_4)
+    #[no_mangle]
+    pub extern "fastcall" fn f4(_: i32, _: f32, _: i32, _: i32) {}
+
+    // CHECK: @f5(i64 %_1, i32 %_2)
+    #[no_mangle]
+    pub extern "fastcall" fn f5(_: i64, _: i32) {}
+
+    // CHECK: @f6(i1 inreg noundef zeroext %_1, i32 inreg %_2, i32 %_3)
+    #[no_mangle]
+    pub extern "fastcall" fn f6(_: bool, _: i32, _: i32) {}
+}