Run rustfmt on `tests/codegen/`.

Except for `simd-intrinsic/`, which has a lot of files containing
multiple types like `u8x64` which really are better when hand-formatted.

There is a surprising amount of two-space indenting in this directory.

Non-trivial changes:
- `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the
  test.
- `rustfmt::skip` used in a few places where hand-formatting read more
  nicely: `enum/enum-match.rs`
- Line number adjustments needed for the expected output of
  `debug-column.rs` and `coroutine-debug.rs`.

1 files changed, 4 insertions, 4 deletions

diff --git a/tests/codegen/pie-relocation-model.rs b/tests/codegen/pie-relocation-model.rs
index 20bf8919ac1..b10af693452 100644
--- a/tests/codegen/pie-relocation-model.rs
+++ b/tests/codegen/pie-relocation-model.rs
@@ -8,15 +8,15 @@
 // CHECK: define dso_local i8 @call_foreign_fn()
 #[no_mangle]
 pub fn call_foreign_fn() -> u8 {
-    unsafe {
-        foreign_fn()
-    }
+    unsafe { foreign_fn() }
 }
 
 // External functions are still marked as non-dso_local, since we don't know if the symbol
 // is defined in the binary or in the shared library.
 // CHECK: declare zeroext i8 @foreign_fn()
-extern "C" {fn foreign_fn() -> u8;}
+extern "C" {
+    fn foreign_fn() -> u8;
+}
 
 // CHECK: !{i32 {{[78]}}, !"PIC Level", i32 2}
 // CHECK: !{i32 7, !"PIE Level", i32 2}