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`.

rustfmt.toml

@@ -14,7 +14,7 @@ ignore = [
     # - some contain syntax errors that cause rustfmt to give an error
     # - some UI tests are broken by different formatting
     # - some require special comments in a particular position (e.g. `EMIT_MIR` comments)
-    "/tests/codegen/",
+    "/tests/codegen/simd-intrinsic/", # Many types like `u8x64` are better hand-formatted.
     "/tests/codegen-units/",
     "/tests/coverage/",
     "/tests/coverage-run-rustdoc/",

tests/codegen/aarch64-struct-align-128.rs

@@ -19,8 +19,6 @@ trait Freeze { }
 #[lang = "copy"]
 trait Copy {}
 
-
-
 // Passed as `[i64 x 2]`, since it's an aggregate with size <= 128 bits, align < 128 bits.
 #[repr(C)]
 pub struct Align8 {
@@ -31,7 +29,7 @@ pub struct Align8 {
 // repr(transparent), so same as above.
 #[repr(transparent)]
 pub struct Transparent8 {
-    a: Align8
+    a: Align8,
 }
 
 // Passed as `[i64 x 2]`, since it's an aggregate with size <= 128 bits, align < 128 bits.
@@ -47,8 +45,6 @@ extern "C" {
     fn test_8(a: Align8, b: Transparent8, c: Wrapped8);
 }
 
-
-
 // Passed as `i128`, since it's an aggregate with size <= 128 bits, align = 128 bits.
 // EXCEPT on Linux, where there's a special case to use its unadjusted alignment,
 // making it the same as `Align8`, so it's be passed as `[i64 x 2]`.
@@ -62,7 +58,7 @@ pub struct Align16 {
 // repr(transparent), so same as above.
 #[repr(transparent)]
 pub struct Transparent16 {
-    a: Align16
+    a: Align16,
 }
 
 // Passed as `i128`, since it's an aggregate with size <= 128 bits, align = 128 bits.
@@ -79,8 +75,6 @@ extern "C" {
     fn test_16(a: Align16, b: Transparent16, c: Wrapped16);
 }
 
-
-
 // Passed as `i128`, since it's an aggregate with size <= 128 bits, align = 128 bits.
 #[repr(C)]
 pub struct I128 {
@@ -90,13 +84,13 @@ pub struct I128 {
 // repr(transparent), so same as above.
 #[repr(transparent)]
 pub struct TransparentI128 {
-    a: I128
+    a: I128,
 }
 
 // Passed as `i128`, since it's an aggregate with size <= 128 bits, align = 128 bits.
 #[repr(C)]
 pub struct WrappedI128 {
-    pub a: I128
+    pub a: I128,
 }
 
 extern "C" {
@@ -106,8 +100,6 @@ extern "C" {
     fn test_i128(a: I128, b: TransparentI128, c: WrappedI128);
 }
 
-
-
 // Passed as `[2 x i64]`, since it's an aggregate with size <= 128 bits, align < 128 bits.
 // Note that the Linux special case does not apply, because packing is not considered "adjustment".
 #[repr(C)]
@@ -119,13 +111,13 @@ pub struct Packed {
 // repr(transparent), so same as above.
 #[repr(transparent)]
 pub struct TransparentPacked {
-    a: Packed
+    a: Packed,
 }
 
 // Passed as `[2 x i64]`, since it's an aggregate with size <= 128 bits, align < 128 bits.
 #[repr(C)]
 pub struct WrappedPacked {
-    pub a: Packed
+    pub a: Packed,
 }
 
 extern "C" {
@@ -135,13 +127,19 @@ extern "C" {
     fn test_packed(a: Packed, b: TransparentPacked, c: WrappedPacked);
 }
 
-
-
 pub unsafe fn main(
-    a1: Align8, a2: Transparent8, a3: Wrapped8,
-    b1: Align16, b2: Transparent16, b3: Wrapped16,
-    c1: I128, c2: TransparentI128, c3: WrappedI128,
-    d1: Packed, d2: TransparentPacked, d3: WrappedPacked,
+    a1: Align8,
+    a2: Transparent8,
+    a3: Wrapped8,
+    b1: Align16,
+    b2: Transparent16,
+    b3: Wrapped16,
+    c1: I128,
+    c2: TransparentI128,
+    c3: WrappedI128,
+    d1: Packed,
+    d2: TransparentPacked,
+    d3: WrappedPacked,
 ) {
     test_8(a1, a2, a3);
     test_16(b1, b2, b3);

tests/codegen/abi-main-signature-16bit-c-int.rs

@@ -6,8 +6,6 @@
 //@[avr] only-avr
 //@[msp] only-msp430
 
-
-fn main() {
-}
+fn main() {}
 
 // CHECK: define i16 @main(i16, i8**)

tests/codegen/abi-main-signature-32bit-c-int.rs

@@ -6,7 +6,6 @@
 //@ ignore-avr
 //@ ignore-wasi wasi codegens the main symbol differently
 
-fn main() {
-}
+fn main() {}
 
 // CHECK: define{{( hidden| noundef)*}} i32 @main(i32{{( %0)?}}, ptr{{( %1)?}})

tests/codegen/abi-repr-ext.rs

@@ -24,14 +24,17 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 #[repr(i8)]
 pub enum Type {
     Type1 = 0,
-    Type2 = 1
+    Type2 = 1,
 }
 
 // To accommodate rust#97800, one might consider writing the below as:
@@ -50,7 +53,6 @@ pub enum Type {
 // riscv-SAME:                  signext
 // CHECK-SAME: i8 @test()
 
-
 #[no_mangle]
 pub extern "C" fn test() -> Type {
     Type::Type1

tests/codegen/adjustments.rs

@@ -5,8 +5,7 @@
 // Hack to get the correct size for the length part in slices
 // CHECK: @helper([[USIZE:i[0-9]+]] %_1)
 #[no_mangle]
-pub fn helper(_: usize) {
-}
+pub fn helper(_: usize) {}
 
 // CHECK-LABEL: @no_op_slice_adjustment
 #[no_mangle]

tests/codegen/align-byval.rs

@@ -23,9 +23,12 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 impl Copy for i32 {}
 impl Copy for i64 {}
@@ -58,7 +61,7 @@ pub struct ForceAlign4 {
 pub struct NaturalAlign8 {
     a: i64,
     b: i64,
-    c: i64
+    c: i64,
 }
 
 // On i686-windows, this is passed by reference (because alignment is >4 and requested/forced),
@@ -68,7 +71,7 @@ pub struct NaturalAlign8 {
 pub struct ForceAlign8 {
     a: i64,
     b: i64,
-    c: i64
+    c: i64,
 }
 
 // On i686-windows, this is passed on stack, because requested alignment is <=4.
@@ -77,28 +80,28 @@ pub struct ForceAlign8 {
 pub struct LowerFA8 {
     a: i64,
     b: i64,
-    c: i64
+    c: i64,
 }
 
 // On i686-windows, this is passed by reference, because it contains a field with
 // requested/forced alignment.
 #[repr(C)]
 pub struct WrappedFA8 {
-    a: ForceAlign8
+    a: ForceAlign8,
 }
 
 // On i686-windows, this has the same ABI as ForceAlign8, i.e. passed by reference.
 #[repr(transparent)]
 pub struct TransparentFA8 {
     _0: (),
-    a: ForceAlign8
+    a: ForceAlign8,
 }
 
 #[repr(C)]
 #[repr(align(16))]
 pub struct ForceAlign16 {
     a: [i32; 16],
-    b: i8
+    b: i8,
 }
 
 // CHECK-LABEL: @call_na1

tests/codegen/align-offset.rs

@@ -53,7 +53,6 @@ pub fn align_offset_word_slice(slice: &[Align4]) -> usize {
     slice.as_ptr().align_offset(32)
 }
 
-
 // CHECK-LABEL: @align_offset_word_ptr(ptr{{.+}}%ptr
 #[no_mangle]
 pub fn align_offset_word_ptr(ptr: *const Align4) -> usize {

tests/codegen/array-cmp.rs

@@ -10,7 +10,8 @@
 #[no_mangle]
 pub fn compare() -> bool {
     let bytes = 12.5f32.to_ne_bytes();
-    bytes == if cfg!(target_endian = "big") {
+    bytes
+        == if cfg!(target_endian = "big") {
             [0x41, 0x48, 0x00, 0x00]
         } else {
             [0x00, 0x00, 0x48, 0x41]

tests/codegen/asm-maybe-uninit.rs

@@ -4,8 +4,8 @@
 #![crate_type = "rlib"]
 #![allow(asm_sub_register)]
 
-use std::mem::MaybeUninit;
 use std::arch::asm;
+use std::mem::MaybeUninit;
 
 // CHECK-LABEL: @int
 #[no_mangle]

tests/codegen/asm-sanitize-llvm.rs

@@ -21,14 +21,10 @@ trait Copy {}
 
 pub unsafe fn we_escape_dollar_signs() {
     // CHECK: call void asm sideeffect alignstack inteldialect "banana$$:"
-    asm!(
-        r"banana$:",
-    )
+    asm!(r"banana$:",)
 }
 
 pub unsafe fn we_escape_escapes_too() {
     // CHECK: call void asm sideeffect alignstack inteldialect "banana\{{(\\|5C)}}36:"
-    asm!(
-        r"banana\36:",
-    )
+    asm!(r"banana\36:",)
 }

tests/codegen/atomicptr.rs

@@ -6,13 +6,12 @@
 
 //@ compile-flags: -O -Cno-prepopulate-passes
 #![crate_type = "lib"]
-
 #![feature(strict_provenance)]
 #![feature(strict_provenance_atomic_ptr)]
 
+use std::ptr::without_provenance_mut;
 use std::sync::atomic::AtomicPtr;
 use std::sync::atomic::Ordering::Relaxed;
-use std::ptr::without_provenance_mut;
 
 // Portability hack so that we can say [[USIZE]] instead of i64/i32/i16 for usize.
 // CHECK: @helper([[USIZE:i[0-9]+]] noundef %_1)

tests/codegen/autovectorize-f32x4.rs

@@ -9,12 +9,7 @@ pub fn auto_vectorize_direct(a: [f32; 4], b: [f32; 4]) -> [f32; 4] {
     // CHECK: load <4 x float>
     // CHECK: fadd <4 x float>
     // CHECK: store <4 x float>
-    [
-        a[0] + b[0],
-        a[1] + b[1],
-        a[2] + b[2],
-        a[3] + b[3],
-    ]
+    [a[0] + b[0], a[1] + b[1], a[2] + b[2], a[3] + b[3]]
 }
 
 // CHECK-LABEL: @auto_vectorize_loop

tests/codegen/auxiliary/extern_decl.rs

@@ -5,7 +5,9 @@
 #![crate_type = "lib"]
 
 #[no_mangle]
-pub fn extern_fn() -> u8 { unsafe { extern_static } }
+pub fn extern_fn() -> u8 {
+    unsafe { extern_static }
+}
 
 #[no_mangle]
 pub static mut extern_static: u8 = 71;

tests/codegen/auxiliary/nounwind.rs

@@ -1,3 +1,2 @@
 #[no_mangle]
-pub fn bar() {
-}
+pub fn bar() {}

tests/codegen/avr/avr-func-addrspace.rs

@@ -22,7 +22,10 @@ pub trait Receiver { }
 #[lang = "tuple_trait"]
 pub trait Tuple {}
 
-pub struct Result<T, E> { _a: T, _b: E }
+pub struct Result<T, E> {
+    _a: T,
+    _b: E,
+}
 
 impl Copy for usize {}
 impl Copy for &usize {}
@@ -110,7 +113,10 @@ pub unsafe fn transmute_fn_ptr_to_data(x: fn()) -> *const () {
     transmute(x)
 }
 
-pub enum Either<T, U> { A(T), B(U) }
+pub enum Either<T, U> {
+    A(T),
+    B(U),
+}
 
 // Previously, we would codegen this as passing/returning a scalar pair of `{ i8, ptr }`,
 // with the `ptr` field representing both `&i32` and `fn()` depending on the variant.

tests/codegen/binary-search-index-no-bound-check.rs

@@ -11,11 +11,7 @@ pub fn binary_search_index_no_bounds_check(s: &[u8]) -> u8 {
     // CHECK-NOT: slice_start_index_len_fail
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
-    if let Ok(idx) = s.binary_search(&b'\\') {
-        s[idx]
-    } else {
-        42
-    }
+    if let Ok(idx) = s.binary_search(&b'\\') { s[idx] } else { 42 }
 }
 
 // Similarly, check that `partition_point` is known to return a valid fencepost.

tests/codegen/branch-protection.rs

@@ -16,8 +16,7 @@
 trait Sized {}
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // BTI: !"branch-target-enforcement", i32 1
 // BTI: !"sign-return-address", i32 0

tests/codegen/cast-target-abi.rs

@@ -18,9 +18,12 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 // This struct will be passed as a single `i64` or `i32`.
 // This may be (if `i64)) larger than the Rust layout, which is just `{ i16, i16 }`.
@@ -104,7 +107,6 @@ pub unsafe fn return_twou16s() -> TwoU16s {
     // powerpc64: [[RETVAL:%.+]] = alloca [4 x i8], align 2
     // powerpc64: call void @returns_twou16s(ptr {{.+}} [[RETVAL]])
 
-
     // The other targets copy the cast ABI type to an alloca.
 
     // aarch64:     [[ABI_ALLOCA:%.+]] = alloca [8 x i8], align [[ABI_ALIGN:8]]
@@ -151,7 +153,6 @@ pub unsafe fn return_fiveu16s() -> FiveU16s {
 
     // powerpc64: call void @returns_fiveu16s(ptr {{.+}} [[RET_PTR]])
 
-
     // The other targets copy the cast ABI type to the sret pointer.
 
     // aarch64:     [[ABI_ALLOCA:%.+]] = alloca [16 x i8], align [[ABI_ALIGN:8]]
@@ -199,7 +200,6 @@ pub unsafe fn return_doubledouble() -> DoubleDouble {
     // powerpc64: [[RETVAL:%.+]] = alloca [16 x i8], align 8
     // powerpc64: call void @returns_doubledouble(ptr {{.+}} [[RETVAL]])
 
-
     // The other targets copy the cast ABI type to an alloca.
 
     // aarch64:     [[ABI_ALLOCA:%.+]] = alloca [16 x i8], align [[ABI_ALIGN:8]]
@@ -266,7 +266,6 @@ pub unsafe fn return_doublefloat() -> DoubleFloat {
     // powerpc64: [[RETVAL:%.+]] = alloca [16 x i8], align 8
     // powerpc64: call void @returns_doublefloat(ptr {{.+}} [[RETVAL]])
 
-
     // The other targets copy the cast ABI type to an alloca.
 
     // aarch64:     [[ABI_ALLOCA:%.+]] = alloca [16 x i8], align [[ABI_ALIGN:8]]

tests/codegen/cf-protection.rs

@@ -17,8 +17,7 @@
 trait Sized {}
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // undefined-NOT: !"cf-protection-branch"
 // undefined-NOT: !"cf-protection-return"

tests/codegen/cffi/ffi-const.rs

@@ -2,12 +2,15 @@
 #![crate_type = "lib"]
 #![feature(ffi_const)]
 
-pub fn bar() { unsafe { foo() } }
+pub fn bar() {
+    unsafe { foo() }
+}
 
 extern "C" {
     // CHECK-LABEL: declare{{.*}}void @foo()
     // CHECK-SAME: [[ATTRS:#[0-9]+]]
     // The attribute changed from `readnone` to `memory(none)` with LLVM 16.0.
     // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}{{readnone|memory\(none\)}}{{.*}} }
-    #[ffi_const] pub fn foo();
+    #[ffi_const]
+    pub fn foo();
 }

tests/codegen/cffi/ffi-out-of-bounds-loads.rs

@@ -13,9 +13,12 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 #[repr(C)]
 struct S {

tests/codegen/cffi/ffi-pure.rs

@@ -2,12 +2,15 @@
 #![crate_type = "lib"]
 #![feature(ffi_pure)]
 
-pub fn bar() { unsafe { foo() } }
+pub fn bar() {
+    unsafe { foo() }
+}
 
 extern "C" {
     // CHECK-LABEL: declare{{.*}}void @foo()
     // CHECK-SAME: [[ATTRS:#[0-9]+]]
     // The attribute changed from `readonly` to `memory(read)` with LLVM 16.0.
     // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}{{readonly|memory\(read\)}}{{.*}} }
-    #[ffi_pure] pub fn foo();
+    #[ffi_pure]
+    pub fn foo();
 }

tests/codegen/cfguard-checks.rs

@@ -4,8 +4,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the module flag cfguard=2 is present
 // CHECK: !"cfguard", i32 2

tests/codegen/cfguard-disabled.rs

@@ -4,8 +4,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the module flag cfguard is not present
 // CHECK-NOT: !"cfguard"

tests/codegen/cfguard-nochecks.rs

@@ -4,8 +4,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the module flag cfguard=1 is present
 // CHECK: !"cfguard", i32 1

tests/codegen/cfguard-non-msvc.rs

@@ -4,8 +4,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the cfguard module flag is not added for non-MSVC targets.
 // CHECK-NOT: !"cfguard"

tests/codegen/constant-branch.rs

@@ -8,18 +8,10 @@
 #[no_mangle]
 pub fn if_bool() {
     // CHECK: br label %{{.+}}
-    _ = if true {
-        0
-    } else {
-        1
-    };
+    _ = if true { 0 } else { 1 };
 
     // CHECK: br label %{{.+}}
-    _ = if false {
-        0
-    } else {
-        1
-    };
+    _ = if false { 0 } else { 1 };
 }
 
 // CHECK-LABEL: @if_constant_int_eq
@@ -27,18 +19,10 @@ pub fn if_bool() {
 pub fn if_constant_int_eq() {
     let val = 0;
     // CHECK: br label %{{.+}}
-    _ = if val == 0 {
-        0
-    } else {
-        1
-    };
+    _ = if val == 0 { 0 } else { 1 };
 
     // CHECK: br label %{{.+}}
-    _ = if val == 1 {
-        0
-    } else {
-        1
-    };
+    _ = if val == 1 { 0 } else { 1 };
 }
 
 // CHECK-LABEL: @if_constant_match
@@ -48,13 +32,13 @@ pub fn if_constant_match() {
     _ = match 1 {
         1 => 2,
         2 => 3,
-        _ => 4
+        _ => 4,
     };
 
     // CHECK: br label %{{.+}}
     _ = match 1 {
         2 => 3,
-        _ => 4
+        _ => 4,
     };
 
     // CHECK: br label %[[MINUS1:.+]]

tests/codegen/coroutine-debug-msvc.rs

@@ -11,7 +11,8 @@
 use std::ops::Coroutine;
 
 fn coroutine_test() -> impl Coroutine<Yield = i32, Return = ()> {
-    #[coroutine] || {
+    #[coroutine]
+    || {
         yield 0;
         let s = String::from("foo");
         yield 1;
@@ -23,23 +24,23 @@ fn coroutine_test() -> impl Coroutine<Yield = i32, Return = ()> {
 // CHECK-DAG:  [[GEN:!.*]] = !DICompositeType(tag: DW_TAG_union_type, name: "enum2$<coroutine_debug_msvc::coroutine_test::coroutine_env$0>"
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant0", scope: [[GEN]],
 // For brevity, we only check the struct name and members of the last variant.
-// CHECK-SAME: file: [[FILE:![0-9]*]], line: 14,
+// CHECK-SAME: file: [[FILE:![0-9]*]], line: 15,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant1", scope: [[GEN]],
-// CHECK-SAME: file: [[FILE]], line: 18,
+// CHECK-SAME: file: [[FILE]], line: 19,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant2", scope: [[GEN]],
-// CHECK-SAME: file: [[FILE]], line: 18,
+// CHECK-SAME: file: [[FILE]], line: 19,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant3", scope: [[GEN]],
-// CHECK-SAME: file: [[FILE]], line: 15,
+// CHECK-SAME: file: [[FILE]], line: 16,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "variant4", scope: [[GEN]],
-// CHECK-SAME: file: [[FILE]], line: 17,
+// CHECK-SAME: file: [[FILE]], line: 18,
 // CHECK-SAME: baseType: [[VARIANT_WRAPPER:![0-9]*]]
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )

tests/codegen/coroutine-debug.rs

@@ -11,7 +11,8 @@
 use std::ops::Coroutine;
 
 fn coroutine_test() -> impl Coroutine<Yield = i32, Return = ()> {
-    #[coroutine] || {
+    #[coroutine]
+    || {
         yield 0;
         let s = String::from("foo");
         yield 1;
@@ -26,26 +27,26 @@ fn coroutine_test() -> impl Coroutine<Yield = i32, Return = ()> {
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: discriminator: [[DISC:![0-9]*]]
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "0", scope: [[VARIANT]],
-// CHECK-SAME: file: [[FILE:![0-9]*]], line: 14,
+// CHECK-SAME: file: [[FILE:![0-9]*]], line: 15,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DICompositeType(tag: DW_TAG_structure_type, name: "Unresumed", scope: [[GEN]],
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "1", scope: [[VARIANT]],
-// CHECK-SAME: file: [[FILE]], line: 18,
+// CHECK-SAME: file: [[FILE]], line: 19,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "2", scope: [[VARIANT]],
-// CHECK-SAME: file: [[FILE]], line: 18,
+// CHECK-SAME: file: [[FILE]], line: 19,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "3", scope: [[VARIANT]],
-// CHECK-SAME: file: [[FILE]], line: 15,
+// CHECK-SAME: file: [[FILE]], line: 16,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "4", scope: [[VARIANT]],
-// CHECK-SAME: file: [[FILE]], line: 17,
+// CHECK-SAME: file: [[FILE]], line: 18,
 // CHECK-NOT:  flags: DIFlagArtificial
 // CHECK-SAME: )
 // CHECK:      [[S1:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Suspend1", scope: [[GEN]],

tests/codegen/dealloc-no-unwind.rs

@@ -6,8 +6,12 @@ struct A;
 
 impl Drop for A {
     fn drop(&mut self) {
-        extern "C" { fn foo(); }
-        unsafe { foo(); }
+        extern "C" {
+            fn foo();
+        }
+        unsafe {
+            foo();
+        }
     }
 }
 

tests/codegen/debug-column.rs

@@ -3,6 +3,7 @@
 //@ ignore-windows
 //@ compile-flags: -C debuginfo=2
 
+#[rustfmt::skip]
 fn main() {
     unsafe {
         // Column numbers are 1-based. Regression test for #65437.
@@ -13,8 +14,8 @@ fn main() {
         // CHECK: call void @turtle(){{( #[0-9]+)?}}, !dbg [[B:!.*]]
 /* ż */ turtle();
 
-        // CHECK: [[A]] = !DILocation(line: 10, column: 9,
-        // CHECK: [[B]] = !DILocation(line: 14, column: 10,
+        // CHECK: [[A]] = !DILocation(line: 11, column: 9,
+        // CHECK: [[B]] = !DILocation(line: 15, column: 10,
     }
 }
 

tests/codegen/debuginfo-generic-closure-env-names.rs

@@ -46,7 +46,6 @@
 // NONMSVC-DAG: !DICompositeType(tag: DW_TAG_structure_type, name: "{closure_env#0}<debuginfo_generic_closure_env_names::Foo>", scope: ![[function_containing_closure_NAMESPACE]]
 // MSVC-DAG: !DICompositeType(tag: DW_TAG_structure_type, name: "closure_env$0<debuginfo_generic_closure_env_names::Foo>", scope: ![[function_containing_closure_NAMESPACE]]
 
-
 #![crate_type = "lib"]
 use std::future::Future;
 
@@ -72,9 +71,7 @@ async fn generic_async_function<T: 'static>(x: T) -> T {
 
 fn generic_async_block<T: 'static>(x: T) -> impl Future<Output = T> {
     static _X: u8 = 0; // Same as above
-    async move {
-        x
-    }
+    async move { x }
 }
 
 pub fn instantiate_generics() {

tests/codegen/drop.rs

@@ -7,21 +7,19 @@ struct SomeUniqueName;
 
 impl Drop for SomeUniqueName {
     #[inline(never)]
-    fn drop(&mut self) {
-    }
+    fn drop(&mut self) {}
 }
 
 #[inline(never)]
-pub fn possibly_unwinding() {
-}
+pub fn possibly_unwinding() {}
 
 // CHECK-LABEL: @droppy
 #[no_mangle]
 pub fn droppy() {
-// Check that there are exactly 6 drop calls. The cleanups for the unwinding should be reused, so
-// that's one new drop call per call to possibly_unwinding(), and finally 3 drop calls for the
-// regular function exit. We used to have problems with quadratic growths of drop calls in such
-// functions.
+    // Check that there are exactly 6 drop calls. The cleanups for the unwinding should be reused,
+    // so that's one new drop call per call to possibly_unwinding(), and finally 3 drop calls for
+    // the regular function exit. We used to have problems with quadratic growths of drop calls in
+    // such functions.
     // FIXME(eddyb) the `void @` forces a match on the instruction, instead of the
     // comment, that's `; call core::ptr::drop_in_place::<drop::SomeUniqueName>`
     // for the `v0` mangling, should switch to matching on that once `legacy` is gone.

tests/codegen/dst-offset.rs

@@ -3,7 +3,6 @@
 //@ compile-flags: -C no-prepopulate-passes -Copt-level=0
 
 #![crate_type = "lib"]
-
 #![feature(extern_types)]
 
 use std::ptr::addr_of;
@@ -11,8 +10,7 @@ use std::ptr::addr_of;
 // Hack to get the correct type for usize
 // CHECK: @helper([[USIZE:i[0-9]+]] %_1)
 #[no_mangle]
-pub fn helper(_: usize) {
-}
+pub fn helper(_: usize) {}
 
 struct Dst<T: ?Sized> {
     x: u32,
@@ -23,7 +21,8 @@ struct Dst<T: ?Sized> {
 // CHECK: @dst_dyn_trait_offset(ptr align {{[0-9]+}} [[DATA_PTR:%.+]], ptr align {{[0-9]+}} [[VTABLE_PTR:%.+]])
 #[no_mangle]
 pub fn dst_dyn_trait_offset(s: &Dst<dyn Drop>) -> &dyn Drop {
-// The alignment of dyn trait is unknown, so we compute the offset based on align from the vtable.
+    // The alignment of dyn trait is unknown, so we compute the offset based on align from the
+    // vtable.
 
     // CHECK: [[SIZE_PTR:%[0-9]+]] = getelementptr inbounds i8, ptr [[VTABLE_PTR]]
     // CHECK: load [[USIZE]], ptr [[SIZE_PTR]]
@@ -70,7 +69,7 @@ pub fn packed_dst_slice_offset(s: &PackedDstSlice) -> *const [u16] {
     addr_of!(s.z)
 }
 
-extern {
+extern "C" {
     pub type Extern;
 }
 

tests/codegen/dst-vtable-align-nonzero.rs

@@ -10,9 +10,15 @@ pub trait Trait {
     fn f(&self);
 }
 
-pub struct WrapperWithAlign1<T: ?Sized> { x: u8, y: T }
+pub struct WrapperWithAlign1<T: ?Sized> {
+    x: u8,
+    y: T,
+}
 
-pub struct WrapperWithAlign2<T: ?Sized> { x: u16, y: T }
+pub struct WrapperWithAlign2<T: ?Sized> {
+    x: u16,
+    y: T,
+}
 
 pub struct Struct<W: ?Sized> {
     _field: i8,
@@ -22,7 +28,7 @@ pub struct Struct<W: ?Sized> {
 // CHECK-LABEL: @eliminates_runtime_check_when_align_1
 #[no_mangle]
 pub fn eliminates_runtime_check_when_align_1(
-    x: &Struct<WrapperWithAlign1<dyn Trait>>
+    x: &Struct<WrapperWithAlign1<dyn Trait>>,
 ) -> &WrapperWithAlign1<dyn Trait> {
     // CHECK: load [[USIZE:i[0-9]+]], {{.+}} !range [[RANGE_META:![0-9]+]]
     // CHECK-NOT: llvm.umax
@@ -35,7 +41,7 @@ pub fn eliminates_runtime_check_when_align_1(
 // CHECK-LABEL: @does_not_eliminate_runtime_check_when_align_2
 #[no_mangle]
 pub fn does_not_eliminate_runtime_check_when_align_2(
-    x: &Struct<WrapperWithAlign2<dyn Trait>>
+    x: &Struct<WrapperWithAlign2<dyn Trait>>,
 ) -> &WrapperWithAlign2<dyn Trait> {
     // CHECK: [[X0:%[0-9]+]] = load [[USIZE]], {{.+}} !range [[RANGE_META]]
     // CHECK: {{icmp|llvm.umax}}

tests/codegen/ehcontguard_disabled.rs

@@ -3,8 +3,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the module flag ehcontguard is not present
 // CHECK-NOT: !"ehcontguard"

tests/codegen/ehcontguard_enabled.rs

@@ -3,8 +3,7 @@
 #![crate_type = "lib"]
 
 // A basic test function.
-pub fn test() {
-}
+pub fn test() {}
 
 // Ensure the module flag ehcontguard=1 is present
 // CHECK: !"ehcontguard", i32 1

tests/codegen/emcripten-catch-unwind.rs

@@ -9,18 +9,23 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 #[rustc_intrinsic]
-fn size_of<T>() -> usize { loop {} }
+fn size_of<T>() -> usize {
+    loop {}
+}
 
 extern "rust-intrinsic" {
     fn catch_unwind(
         try_fn: fn(_: *mut u8),
         data: *mut u8,
-        catch_fn: fn(_: *mut u8, _: *mut u8)
+        catch_fn: fn(_: *mut u8, _: *mut u8),
     ) -> i32;
 }
 
@@ -36,7 +41,7 @@ pub fn ptr_size() -> usize {
 pub unsafe fn test_catch_unwind(
     try_fn: fn(_: *mut u8),
     data: *mut u8,
-    catch_fn: fn(_: *mut u8, _: *mut u8)
+    catch_fn: fn(_: *mut u8, _: *mut u8),
 ) -> i32 {
     // CHECK: start:
     // CHECK: [[ALLOCA:%.*]] = alloca

tests/codegen/enable-lto-unit-splitting.rs

@@ -4,7 +4,6 @@
 
 #![crate_type = "lib"]
 
-pub fn foo() {
-}
+pub fn foo() {}
 
 // CHECK: !{{[0-9]+}} = !{i32 4, !"EnableSplitLTOUnit", i32 1}

tests/codegen/enum/enum-bounds-check.rs

@@ -3,7 +3,8 @@
 #![crate_type = "lib"]
 
 pub enum Foo {
-    A, B
+    A,
+    B,
 }
 
 // CHECK-LABEL: @lookup
@@ -15,7 +16,7 @@ pub fn lookup(buf: &[u8; 2], f: Foo) -> u8 {
 
 pub enum Bar {
     A = 2,
-    B = 3
+    B = 3,
 }
 
 // CHECK-LABEL: @lookup_unmodified

tests/codegen/enum/enum-debug-clike.rs

@@ -17,7 +17,11 @@
 #![allow(unused_variables)]
 #![allow(unused_assignments)]
 
-enum E { A, B, C }
+enum E {
+    A,
+    B,
+    C,
+}
 
 pub fn main() {
     let e = E::C;

tests/codegen/enum/enum-debug-niche.rs

@@ -23,7 +23,12 @@
 #![allow(unused_variables)]
 #![allow(unused_assignments)]
 
-enum E { A, B, C, D(bool) }
+enum E {
+    A,
+    B,
+    C,
+    D(bool),
+}
 
 pub fn main() {
     let e = E::D(true);

tests/codegen/enum/enum-debug-tagged.rs

@@ -21,7 +21,10 @@
 #![allow(unused_variables)]
 #![allow(unused_assignments)]
 
-enum E { A(u32), B(u32) }
+enum E {
+    A(u32),
+    B(u32),
+}
 
 pub fn main() {
     let e = E::A(23);

tests/codegen/enum/enum-match.rs

@@ -50,6 +50,7 @@ pub fn match1(e: Enum1) -> u8 {
 }
 
 // Case 2: Special cases don't apply.
+#[rustfmt::skip]
 pub enum X {
     _2=2, _3, _4, _5, _6, _7, _8, _9, _10, _11,
     _12, _13, _14, _15, _16, _17, _18, _19, _20,

tests/codegen/enum/unreachable_enum_default_branch.rs

@@ -22,8 +22,7 @@ const C: Int = Int(153);
 // CHECK-NEXT:    ret i1 [[SPEC_SELECT]]
 #[no_mangle]
 pub fn implicit_match(x: Int) -> bool {
-    (x >= A && x <= B)
-        || x == C
+    (x >= A && x <= B) || x == C
 }
 
 // The code is from https://github.com/rust-lang/rust/issues/110097.
@@ -35,9 +34,5 @@ pub fn implicit_match(x: Int) -> bool {
 // CHECK-NEXT: ret
 #[no_mangle]
 pub fn if_let(val: Result<i32, ()>) -> Result<i32, ()> {
-    if let Ok(x) = val {
-        Ok(x)
-    } else {
-        Err(())
-    }
+    if let Ok(x) = val { Ok(x) } else { Err(()) }
 }

tests/codegen/float_math.rs

@@ -3,7 +3,7 @@
 #![crate_type = "lib"]
 #![feature(core_intrinsics)]
 
-use std::intrinsics::{fadd_fast, fsub_fast, fmul_fast, fdiv_fast, frem_fast};
+use std::intrinsics::{fadd_fast, fdiv_fast, fmul_fast, frem_fast, fsub_fast};
 
 // CHECK-LABEL: @add
 #[no_mangle]
@@ -17,34 +17,26 @@ pub fn add(x: f32, y: f32) -> f32 {
 #[no_mangle]
 pub fn addition(x: f32, y: f32) -> f32 {
     // CHECK: fadd fast float
-    unsafe {
-        fadd_fast(x, y)
-    }
+    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)
-    }
+    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)
-    }
+    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)
-    }
+    unsafe { fdiv_fast(x, y) }
 }

tests/codegen/frame-pointer.rs

@@ -19,7 +19,6 @@ trait Sized { }
 trait Copy {}
 impl Copy for u32 {}
 
-
 // CHECK: define i32 @peach{{.*}}[[PEACH_ATTRS:\#[0-9]+]] {
 #[no_mangle]
 pub fn peach(x: u32) -> u32 {

tests/codegen/function-arguments.rs

@@ -3,9 +3,9 @@
 #![feature(dyn_star)]
 #![feature(allocator_api)]
 
+use std::marker::PhantomPinned;
 use std::mem::MaybeUninit;
 use std::num::NonZero;
-use std::marker::PhantomPinned;
 use std::ptr::NonNull;
 
 pub struct S {
@@ -83,8 +83,7 @@ pub fn option_nonzero_int(x: Option<NonZero<u64>>) -> Option<NonZero<u64>> {
 // CHECK: @readonly_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn readonly_borrow(_: &i32) {
-}
+pub fn readonly_borrow(_: &i32) {}
 
 // CHECK: noundef align 4 dereferenceable(4) ptr @readonly_borrow_ret()
 #[no_mangle]
@@ -95,32 +94,27 @@ pub fn readonly_borrow_ret() -> &'static i32 {
 // CHECK: @static_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1)
 // static borrow may be captured
 #[no_mangle]
-pub fn static_borrow(_: &'static i32) {
-}
+pub fn static_borrow(_: &'static i32) {}
 
 // CHECK: @named_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1)
 // borrow with named lifetime may be captured
 #[no_mangle]
-pub fn named_borrow<'r>(_: &'r i32) {
-}
+pub fn named_borrow<'r>(_: &'r i32) {}
 
 // CHECK: @unsafe_borrow(ptr noundef nonnull align 2 %_1)
 // unsafe interior means this isn't actually readonly and there may be aliases ...
 #[no_mangle]
-pub fn unsafe_borrow(_: &UnsafeInner) {
-}
+pub fn unsafe_borrow(_: &UnsafeInner) {}
 
 // CHECK: @mutable_unsafe_borrow(ptr noalias noundef align 2 dereferenceable(2) %_1)
 // ... unless this is a mutable borrow, those never alias
 #[no_mangle]
-pub fn mutable_unsafe_borrow(_: &mut UnsafeInner) {
-}
+pub fn mutable_unsafe_borrow(_: &mut UnsafeInner) {}
 
 // CHECK: @mutable_borrow(ptr noalias noundef align 4 dereferenceable(4) %_1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn mutable_borrow(_: &mut i32) {
-}
+pub fn mutable_borrow(_: &mut i32) {}
 
 // CHECK: noundef align 4 dereferenceable(4) ptr @mutable_borrow_ret()
 #[no_mangle]
@@ -133,46 +127,37 @@ pub fn mutable_borrow_ret() -> &'static mut i32 {
 // This one is *not* `noalias` because it might be self-referential.
 // It is also not `dereferenceable` due to
 // <https://github.com/rust-lang/unsafe-code-guidelines/issues/381>.
-pub fn mutable_notunpin_borrow(_: &mut NotUnpin) {
-}
+pub fn mutable_notunpin_borrow(_: &mut NotUnpin) {}
 
 // CHECK: @notunpin_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1)
 // But `&NotUnpin` behaves perfectly normal.
 #[no_mangle]
-pub fn notunpin_borrow(_: &NotUnpin) {
-}
+pub fn notunpin_borrow(_: &NotUnpin) {}
 
 // CHECK: @indirect_struct(ptr noalias nocapture noundef readonly align 4 dereferenceable(32) %_1)
 #[no_mangle]
-pub fn indirect_struct(_: S) {
-}
+pub fn indirect_struct(_: S) {}
 
 // CHECK: @borrowed_struct(ptr noalias noundef readonly align 4 dereferenceable(32) %_1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn borrowed_struct(_: &S) {
-}
+pub fn borrowed_struct(_: &S) {}
 
 // CHECK: @option_borrow(ptr noalias noundef readonly align 4 dereferenceable_or_null(4) %x)
 #[no_mangle]
-pub fn option_borrow(x: Option<&i32>) {
-}
+pub fn option_borrow(x: Option<&i32>) {}
 
 // CHECK: @option_borrow_mut(ptr noalias noundef align 4 dereferenceable_or_null(4) %x)
 #[no_mangle]
-pub fn option_borrow_mut(x: Option<&mut i32>) {
-}
+pub fn option_borrow_mut(x: Option<&mut i32>) {}
 
 // CHECK: @raw_struct(ptr noundef %_1)
 #[no_mangle]
-pub fn raw_struct(_: *const S) {
-}
+pub fn raw_struct(_: *const S) {}
 
 // CHECK: @raw_option_nonnull_struct(ptr noundef %_1)
 #[no_mangle]
-pub fn raw_option_nonnull_struct(_: Option<NonNull<S>>) {
-}
-
+pub fn raw_option_nonnull_struct(_: Option<NonNull<S>>) {}
 
 // `Box` can get deallocated during execution of the function, so it should
 // not get `dereferenceable`.
@@ -200,71 +185,58 @@ pub fn notunpin_box(x: Box<NotUnpin>) -> Box<NotUnpin> {
 // CHECK: @struct_return(ptr{{( dead_on_unwind)?}} noalias nocapture noundef{{( writable)?}} sret([32 x i8]) align 4 dereferenceable(32){{( %_0)?}})
 #[no_mangle]
 pub fn struct_return() -> S {
-  S {
-    _field: [0, 0, 0, 0, 0, 0, 0, 0]
-  }
+    S { _field: [0, 0, 0, 0, 0, 0, 0, 0] }
 }
 
 // Hack to get the correct size for the length part in slices
 // CHECK: @helper([[USIZE:i[0-9]+]] noundef %_1)
 #[no_mangle]
-pub fn helper(_: usize) {
-}
+pub fn helper(_: usize) {}
 
 // CHECK: @slice(ptr noalias noundef nonnull readonly align 1 %_1.0, [[USIZE]] noundef %_1.1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn slice(_: &[u8]) {
-}
+pub fn slice(_: &[u8]) {}
 
 // CHECK: @mutable_slice(ptr noalias noundef nonnull align 1 %_1.0, [[USIZE]] noundef %_1.1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn mutable_slice(_: &mut [u8]) {
-}
+pub fn mutable_slice(_: &mut [u8]) {}
 
 // CHECK: @unsafe_slice(ptr noundef nonnull align 2 %_1.0, [[USIZE]] noundef %_1.1)
 // unsafe interior means this isn't actually readonly and there may be aliases ...
 #[no_mangle]
-pub fn unsafe_slice(_: &[UnsafeInner]) {
-}
+pub fn unsafe_slice(_: &[UnsafeInner]) {}
 
 // CHECK: @raw_slice(ptr noundef %_1.0, [[USIZE]] noundef %_1.1)
 #[no_mangle]
-pub fn raw_slice(_: *const [u8]) {
-}
+pub fn raw_slice(_: *const [u8]) {}
 
 // CHECK: @str(ptr noalias noundef nonnull readonly align 1 %_1.0, [[USIZE]] noundef %_1.1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn str(_: &[u8]) {
-}
+pub fn str(_: &[u8]) {}
 
 // CHECK: @trait_borrow(ptr noundef nonnull align 1 %_1.0, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}) %_1.1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
-pub fn trait_borrow(_: &dyn Drop) {
-}
+pub fn trait_borrow(_: &dyn Drop) {}
 
 // CHECK: @option_trait_borrow(ptr noundef align 1 %x.0, ptr %x.1)
 #[no_mangle]
-pub fn option_trait_borrow(x: Option<&dyn Drop>) {
-}
+pub fn option_trait_borrow(x: Option<&dyn Drop>) {}
 
 // CHECK: @option_trait_borrow_mut(ptr noundef align 1 %x.0, ptr %x.1)
 #[no_mangle]
-pub fn option_trait_borrow_mut(x: Option<&mut dyn Drop>) {
-}
+pub fn option_trait_borrow_mut(x: Option<&mut dyn Drop>) {}
 
 // CHECK: @trait_raw(ptr noundef %_1.0, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}) %_1.1)
 #[no_mangle]
-pub fn trait_raw(_: *const dyn Drop) {
-}
+pub fn trait_raw(_: *const dyn Drop) {}
 
 // CHECK: @trait_box(ptr noalias noundef nonnull align 1{{( %0)?}}, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}){{( %1)?}})
 #[no_mangle]
-pub fn trait_box(_: Box<dyn Drop + Unpin>) {
-}
+pub fn trait_box(_: Box<dyn Drop + Unpin>) {}
 
 // CHECK: { ptr, ptr } @trait_option(ptr noalias noundef align 1 %x.0, ptr %x.1)
 #[no_mangle]

tests/codegen/instrument-coverage/instrument-coverage.rs

@@ -15,9 +15,7 @@
 #![crate_type = "lib"]
 
 #[inline(never)]
-fn some_function() {
-
-}
+fn some_function() {}
 
 pub fn some_other_function() {
     some_function();

tests/codegen/integer-overflow.rs

@@ -2,7 +2,6 @@
 
 #![crate_type = "lib"]
 
-
 pub struct S1<'a> {
     data: &'a [u8],
     position: usize,

tests/codegen/internalize-closures.rs

@@ -1,7 +1,6 @@
 //@ compile-flags: -C no-prepopulate-passes -Zmir-opt-level=0
 
 pub fn main() {
-
     // We want to make sure that closures get 'internal' linkage instead of
     // 'weak_odr' when they are not shared between codegen units
     // FIXME(eddyb) `legacy` mangling uses `{{closure}}`, while `v0`
@@ -9,6 +8,6 @@ pub fn main() {
     // CHECK-LABEL: ; internalize_closures::main::{{.*}}closure
     // CHECK-NEXT: ; Function Attrs:
     // CHECK-NEXT: define internal
-    let c = |x:i32| { x + 1 };
+    let c = |x: i32| x + 1;
     let _ = c(1);
 }

tests/codegen/intrinsic-no-unnamed-attr.rs

@@ -8,5 +8,7 @@ extern "rust-intrinsic" {
 // CHECK: @llvm.sqrt.f32(float) #{{[0-9]*}}
 
 fn main() {
-    unsafe { sqrtf32(0.0f32); }
+    unsafe {
+        sqrtf32(0.0f32);
+    }
 }

tests/codegen/intrinsics/const_eval_select.rs

@@ -6,10 +6,14 @@
 
 use std::intrinsics::const_eval_select;
 
-const fn foo(_: i32) -> i32 { 1 }
+const fn foo(_: i32) -> i32 {
+    1
+}
 
 #[no_mangle]
-pub fn hi(n: i32) -> i32 { n }
+pub fn hi(n: i32) -> i32 {
+    n
+}
 
 #[no_mangle]
 pub unsafe fn hey() {

tests/codegen/intrinsics/likely.rs

@@ -9,11 +9,7 @@ use std::intrinsics::{likely,unlikely};
 pub fn check_likely(x: i32, y: i32) -> Option<i32> {
     unsafe {
         // CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 true)
-        if likely(x == y) {
-            None
-        } else {
-            Some(x + y)
-        }
+        if likely(x == y) { None } else { Some(x + y) }
     }
 }
 
@@ -21,10 +17,6 @@ pub fn check_likely(x: i32, y: i32) -> Option<i32> {
 pub fn check_unlikely(x: i32, y: i32) -> Option<i32> {
     unsafe {
         // CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 false)
-        if unlikely(x == y) {
-            None
-        } else {
-            Some(x + y)
-        }
+        if unlikely(x == y) { None } else { Some(x + y) }
     }
 }

tests/codegen/intrinsics/prefetch.rs

@@ -3,8 +3,9 @@
 #![crate_type = "lib"]
 #![feature(core_intrinsics)]
 
-use std::intrinsics::{prefetch_read_data, prefetch_write_data,
-                      prefetch_read_instruction, prefetch_write_instruction};
+use std::intrinsics::{
+    prefetch_read_data, prefetch_read_instruction, prefetch_write_data, prefetch_write_instruction,
+};
 
 #[no_mangle]
 pub fn check_prefetch_read_data(data: &[i8]) {

tests/codegen/issues/issue-103327.rs

@@ -9,9 +9,5 @@ pub fn test(a: i32, b: i32) -> bool {
     let c1 = (a >= 0) && (a <= 10);
     let c2 = (b >= 0) && (b <= 20);
 
-    if c1 & c2 {
-        a + 100 != b
-    } else {
-        true
-    }
+    if c1 & c2 { a + 100 != b } else { true }
 }

tests/codegen/issues/issue-105386-ub-in-debuginfo.rs

@@ -6,7 +6,8 @@ pub struct S([usize; 8]);
 
 #[no_mangle]
 pub fn outer_function(x: S, y: S) -> usize {
-    (#[inline(always)]|| {
+    (#[inline(always)]
+    || {
         let _z = x;
         y.0[0]
     })()

tests/codegen/issues/issue-119422.rs

@@ -5,8 +5,8 @@
 //@ only-64bit (because the LLVM type of i64 for usize shows up)
 #![crate_type = "lib"]
 
-use core::ptr::NonNull;
 use core::num::NonZero;
+use core::ptr::NonNull;
 
 // CHECK-LABEL: @check_non_null
 #[no_mangle]

tests/codegen/issues/issue-32364.rs

@@ -9,8 +9,7 @@ struct Foo;
 impl Foo {
     // CHECK: define internal x86_stdcallcc void @{{.*}}foo{{.*}}()
     #[inline(never)]
-    pub extern "stdcall" fn foo<T>() {
-    }
+    pub extern "stdcall" fn foo<T>() {}
 }
 
 fn main() {

tests/codegen/issues/issue-47278.rs

@@ -6,4 +6,6 @@ pub struct Foo(u64);
 
 // CHECK: define {{.*}} @foo(
 #[no_mangle]
-pub extern "C" fn foo(_: Foo) -> Foo { loop {} }
+pub extern "C" fn foo(_: Foo) -> Foo {
+    loop {}
+}

tests/codegen/issues/issue-73031.rs

@@ -12,11 +12,7 @@ pub enum All {
 // CHECK-LABEL: @issue_73031
 #[no_mangle]
 pub fn issue_73031(a: &mut All, q: i32) -> i32 {
-    *a = if q == 5 {
-        All::Foo
-    } else {
-        All::Bar
-    };
+    *a = if q == 5 { All::Foo } else { All::Bar };
     match *a {
         // CHECK-NOT: panic
         All::None => panic!(),

tests/codegen/issues/issue-73258.rs

@@ -7,7 +7,10 @@
 #[derive(Clone, Copy)]
 #[repr(u8)]
 pub enum Foo {
-    A, B, C, D,
+    A,
+    B,
+    C,
+    D,
 }
 
 // CHECK-LABEL: @issue_73258(

tests/codegen/issues/issue-73396-bounds-check-after-position.rs

@@ -12,11 +12,7 @@ pub fn position_slice_to_no_bounds_check(s: &[u8]) -> &[u8] {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().position(|b| *b == b'\\') {
-        &s[..idx]
-    } else {
-        s
-    }
+    if let Some(idx) = s.iter().position(|b| *b == b'\\') { &s[..idx] } else { s }
 }
 
 // CHECK-LABEL: @position_slice_from_no_bounds_check
@@ -27,11 +23,7 @@ pub fn position_slice_from_no_bounds_check(s: &[u8]) -> &[u8] {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().position(|b| *b == b'\\') {
-        &s[idx..]
-    } else {
-        s
-    }
+    if let Some(idx) = s.iter().position(|b| *b == b'\\') { &s[idx..] } else { s }
 }
 
 // CHECK-LABEL: @position_index_no_bounds_check
@@ -42,11 +34,7 @@ pub fn position_index_no_bounds_check(s: &[u8]) -> u8 {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().position(|b| *b == b'\\') {
-        s[idx]
-    } else {
-        42
-    }
+    if let Some(idx) = s.iter().position(|b| *b == b'\\') { s[idx] } else { 42 }
 }
 // CHECK-LABEL: @rposition_slice_to_no_bounds_check
 #[no_mangle]
@@ -56,11 +44,7 @@ pub fn rposition_slice_to_no_bounds_check(s: &[u8]) -> &[u8] {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') {
-        &s[..idx]
-    } else {
-        s
-    }
+    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { &s[..idx] } else { s }
 }
 
 // CHECK-LABEL: @rposition_slice_from_no_bounds_check
@@ -71,11 +55,7 @@ pub fn rposition_slice_from_no_bounds_check(s: &[u8]) -> &[u8] {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') {
-        &s[idx..]
-    } else {
-        s
-    }
+    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { &s[idx..] } else { s }
 }
 
 // CHECK-LABEL: @rposition_index_no_bounds_check
@@ -86,9 +66,5 @@ pub fn rposition_index_no_bounds_check(s: &[u8]) -> u8 {
     // CHECK-NOT: slice_end_index_len_fail
     // CHECK-NOT: panic_bounds_check
     // CHECK-NOT: unreachable
-    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') {
-        s[idx]
-    } else {
-        42
-    }
+    if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { s[idx] } else { 42 }
 }

tests/codegen/issues/issue-75546.rs

@@ -9,7 +9,9 @@ pub fn issue_75546() {
     let mut i = 1u32;
     while i < u32::MAX {
         // CHECK-NOT: panic
-        if i == 0 { panic!(); }
+        if i == 0 {
+            panic!();
+        }
         i += 1;
     }
 }

tests/codegen/issues/issue-77812.rs

@@ -10,7 +10,7 @@ pub enum Variant {
     Two,
 }
 
-extern {
+extern "C" {
     fn exf1();
     fn exf2();
 }

tests/codegen/issues/issue-84268.rs

@@ -17,7 +17,5 @@ pub struct M([i32; 4]);
 pub fn is_infinite(v: V) -> M {
     // CHECK: fabs
     // CHECK: cmp oeq
-    unsafe {
-        simd_eq(simd_fabs(v), V([f32::INFINITY; 4]))
-    }
+    unsafe { simd_eq(simd_fabs(v), V([f32::INFINITY; 4])) }
 }

tests/codegen/issues/issue-99960.rs

@@ -6,9 +6,5 @@
 pub fn test(dividend: i64, divisor: i64) -> Option<i64> {
     // CHECK-LABEL: @test(
     // CHECK-NOT: panic
-    if dividend > i64::min_value() && divisor != 0 {
-        Some(dividend / divisor)
-    } else {
-        None
-    }
+    if dividend > i64::min_value() && divisor != 0 { Some(dividend / divisor) } else { None }
 }

tests/codegen/lib-optimizations/iter-sum.rs

@@ -2,7 +2,6 @@
 //@ only-x86_64 (vectorization varies between architectures)
 #![crate_type = "lib"]
 
-
 // Ensure that slice + take + sum gets vectorized.
 // Currently this relies on the slice::Iter::try_fold implementation
 // CHECK-LABEL: @slice_take_sum

tests/codegen/link-dead-code.rs

@@ -8,15 +8,21 @@
 // CHECK-LABEL: ; link_dead_code::const_fn
 // CHECK-NEXT: ; Function Attrs:
 // CHECK-NEXT: define hidden
-const fn const_fn() -> i32 { 1 }
+const fn const_fn() -> i32 {
+    1
+}
 
 // CHECK-LABEL: ; link_dead_code::inline_fn
 // CHECK-NEXT: ; Function Attrs:
 // CHECK-NEXT: define hidden
 #[inline]
-fn inline_fn() -> i32 { 2 }
+fn inline_fn() -> i32 {
+    2
+}
 
 // CHECK-LABEL: ; link_dead_code::private_fn
 // CHECK-NEXT: ; Function Attrs:
 // CHECK-NEXT: define hidden
-fn private_fn() -> i32 { 3 }
+fn private_fn() -> i32 {
+    3
+}

tests/codegen/link_section.rs

@@ -16,7 +16,7 @@ pub static VAR1: u32 = 0x01000000;
 
 pub enum E {
     A(u32),
-    B(f32)
+    B(f32),
 }
 
 // CHECK: @VAR2 = {{(dso_local )?}}constant {{.*}}, section ".test_two"

tests/codegen/loongarch-abi/loongarch64-lp64d-abi.rs

@@ -6,9 +6,12 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 // CHECK: define void @f_fpr_tracking(double %0, double %1, double %2, double %3, double %4, double %5, double %6, double %7, i8 noundef zeroext %i)
 #[no_mangle]

tests/codegen/match-optimizes-away.rs

@@ -2,10 +2,19 @@
 //@ compile-flags: -O
 #![crate_type = "lib"]
 
-pub enum Three { A, B, C }
+pub enum Three {
+    A,
+    B,
+    C,
+}
 
 #[repr(u16)]
-pub enum Four { A, B, C, D }
+pub enum Four {
+    A,
+    B,
+    C,
+    D,
+}
 
 #[no_mangle]
 pub fn three_valued(x: Three) -> Three {

tests/codegen/mir_zst_stores.rs

@@ -4,7 +4,9 @@
 use std::marker::PhantomData;
 
 #[derive(Copy, Clone)]
-struct Zst { phantom: PhantomData<Zst> }
+struct Zst {
+    phantom: PhantomData<Zst>,
+}
 
 // CHECK-LABEL: @mir
 // CHECK-NOT: store{{.*}}undef

tests/codegen/naked-fn/naked-functions.rs

@@ -14,8 +14,7 @@ pub unsafe extern "C" fn naked_empty() {
     // CHECK-NEXT: {{.+}}:
     // CHECK-NEXT: call void asm
     // CHECK-NEXT: unreachable
-    asm!("ret",
-         options(noreturn));
+    asm!("ret", options(noreturn));
 }
 
 // CHECK: Function Attrs: naked
@@ -26,7 +25,5 @@ pub unsafe extern "C" fn naked_with_args_and_return(a: isize, b: isize) -> isize
     // CHECK-NEXT: {{.+}}:
     // CHECK-NEXT: call void asm
     // CHECK-NEXT: unreachable
-    asm!("lea rax, [rdi + rsi]",
-         "ret",
-         options(noreturn));
+    asm!("lea rax, [rdi + rsi]", "ret", options(noreturn));
 }

tests/codegen/noalias-freeze.rs

@@ -8,7 +8,9 @@
 
 #![crate_type = "lib"]
 
-fn project<T>(x: &(T,)) -> &T { &x.0 }
+fn project<T>(x: &(T,)) -> &T {
+    &x.0
+}
 
 fn dummy() {}
 

tests/codegen/noalias-unpin.rs

@@ -4,7 +4,7 @@
 
 pub struct SelfRef {
     self_ref: *mut SelfRef,
-    _pin: std::marker::PhantomPinned
+    _pin: std::marker::PhantomPinned,
 }
 
 // CHECK-LABEL: @test_self_ref(

tests/codegen/non-terminate/infinite-recursion.rs

@@ -1,7 +1,6 @@
 //@ compile-flags: -C opt-level=3
 
 #![crate_type = "lib"]
-
 #![allow(unconditional_recursion)]
 
 // CHECK-LABEL: @infinite_recursion

tests/codegen/option-niche-eq.rs

@@ -4,8 +4,8 @@
 
 extern crate core;
 use core::cmp::Ordering;
-use core::ptr::NonNull;
 use core::num::NonZero;
+use core::ptr::NonNull;
 
 // CHECK-LABEL: @non_zero_eq
 #[no_mangle]

tests/codegen/packed.rs

@@ -6,13 +6,13 @@
 #[repr(packed)]
 pub struct Packed1 {
     dealign: u8,
-    data: u32
+    data: u32,
 }
 
 #[repr(packed(2))]
 pub struct Packed2 {
     dealign: u8,
-    data: u32
+    data: u32,
 }
 
 // CHECK-LABEL: @write_pkd1
@@ -39,13 +39,13 @@ pub struct Array([i32; 8]);
 #[repr(packed)]
 pub struct BigPacked1 {
     dealign: u8,
-    data: Array
+    data: Array,
 }
 
 #[repr(packed(2))]
 pub struct BigPacked2 {
     dealign: u8,
-    data: Array
+    data: Array,
 }
 
 // CHECK-LABEL: @call_pkd1

tests/codegen/panic-abort-windows.rs

@@ -8,11 +8,9 @@
 // CHECK: Function Attrs: nounwind uwtable
 // CHECK-NEXT: define void @normal_uwtable()
 #[no_mangle]
-pub fn normal_uwtable() {
-}
+pub fn normal_uwtable() {}
 
 // CHECK: Function Attrs: nounwind uwtable
 // CHECK-NEXT: define void @extern_uwtable()
 #[no_mangle]
-pub extern fn extern_uwtable() {
-}
+pub extern "C" fn extern_uwtable() {}

tests/codegen/personality_lifetimes.rs

@@ -9,13 +9,11 @@ struct S;
 
 impl Drop for S {
     #[inline(never)]
-    fn drop(&mut self) {
-    }
+    fn drop(&mut self) {}
 }
 
 #[inline(never)]
-fn might_unwind() {
-}
+fn might_unwind() {}
 
 // CHECK-LABEL: @test
 #[no_mangle]

tests/codegen/pgo-instrumentation.rs

@@ -13,9 +13,7 @@
 #![crate_type = "lib"]
 
 #[inline(never)]
-fn some_function() {
-
-}
+fn some_function() {}
 
 pub fn some_other_function() {
     some_function();

tests/codegen/pic-relocation-model.rs

@@ -5,15 +5,15 @@
 // CHECK: define i8 @call_foreign_fn()
 #[no_mangle]
 pub fn call_foreign_fn() -> u8 {
-    unsafe {
-        foreign_fn()
-    }
+    unsafe { foreign_fn() }
 }
 
 // (Allow but do not require `zeroext` here, because it is not worth effort to
 // spell out which targets have it and which ones do not; see rust#97800.)
 
 // 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}

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}

tests/codegen/powerpc64le-struct-align-128.rs

@@ -23,7 +23,7 @@ pub struct Align8 {
 
 #[repr(transparent)]
 pub struct Transparent8 {
-    a: Align8
+    a: Align8,
 }
 
 #[repr(C)]
@@ -45,7 +45,7 @@ pub struct Align16 {
 
 #[repr(transparent)]
 pub struct Transparent16 {
-    a: Align16
+    a: Align16,
 }
 
 #[repr(C)]
@@ -69,7 +69,7 @@ pub struct Align32 {
 
 #[repr(transparent)]
 pub struct Transparent32 {
-    a: Align32
+    a: Align32,
 }
 
 #[repr(C)]
@@ -83,9 +83,15 @@ extern "C" {
 }
 
 pub unsafe fn main(
-    a1: Align8, a2: Transparent8, a3: Wrapped8,
-    b1: Align16, b2: Transparent16, b3: Wrapped16,
-    c1: Align32, c2: Transparent32, c3: Wrapped32,
+    a1: Align8,
+    a2: Transparent8,
+    a3: Wrapped8,
+    b1: Align16,
+    b2: Transparent16,
+    b3: Wrapped16,
+    c1: Align32,
+    c2: Transparent32,
+    c3: Wrapped32,
 ) {
     test_8(a1, a2, a3);
     test_16(b1, b2, b3);

tests/codegen/precondition-checks.rs

@@ -21,7 +21,5 @@ use std::ptr::NonNull;
 #[no_mangle]
 pub unsafe fn nonnull_new(ptr: *mut u8) -> NonNull<u8> {
     // CHECK: ; call core::ptr::non_null::NonNull<T>::new_unchecked
-    unsafe {
-        NonNull::new_unchecked(ptr)
-    }
+    unsafe { NonNull::new_unchecked(ptr) }
 }

tests/codegen/refs.rs

@@ -5,8 +5,7 @@
 // Hack to get the correct size for the length part in slices
 // CHECK: @helper([[USIZE:i[0-9]+]] %_1)
 #[no_mangle]
-pub fn helper(_: usize) {
-}
+pub fn helper(_: usize) {}
 
 // CHECK-LABEL: @ref_dst
 #[no_mangle]

tests/codegen/repr/transparent-imm-array.rs

@@ -26,15 +26,17 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 impl Copy for [u32; 16] {}
 impl Copy for BigS {}
 impl Copy for BigU {}
 
-
 #[repr(C)]
 pub struct BigS([u32; 16]);
 
@@ -53,20 +55,27 @@ pub enum TeBigS {
 
 // CHECK: define void @test_BigS(ptr [[BIGS_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGS_RET_ATTRS2:.*]], [16 x i32]
 #[no_mangle]
-pub extern fn test_BigS(_: BigS) -> BigS { loop {} }
+pub extern "C" fn test_BigS(_: BigS) -> BigS {
+    loop {}
+}
 
 // CHECK: define void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
+pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS {
+    loop {}
+}
 
 // CHECK: define void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
+pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS {
+    loop {}
+}
 
 // CHECK: define void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
-
+pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS {
+    loop {}
+}
 
 #[repr(C)]
 pub union BigU {
@@ -88,16 +97,24 @@ pub enum TeBigU {
 
 // CHECK: define void @test_BigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], [16 x i32]
 #[no_mangle]
-pub extern fn test_BigU(_: BigU) -> BigU { loop {} }
+pub extern "C" fn test_BigU(_: BigU) -> BigU {
+    loop {}
+}
 
 // CHECK: define void @test_TsBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
+pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU {
+    loop {}
+}
 
 // CHECK: define void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
+pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU {
+    loop {}
+}
 
 // CHECK: define void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [16 x i32]
 #[no_mangle]
-pub extern fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}

tests/codegen/repr/transparent-mips64.rs

@@ -13,9 +13,12 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 impl Copy for [u32; 16] {}
 impl Copy for BigS {}
@@ -39,20 +42,27 @@ pub enum TeBigS {
 
 // CHECK: define void @test_BigS(ptr [[BIGS_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGS_RET_ATTRS2:.*]], [8 x i64]
 #[no_mangle]
-pub extern fn test_BigS(_: BigS) -> BigS { loop {} }
+pub extern "C" fn test_BigS(_: BigS) -> BigS {
+    loop {}
+}
 
 // CHECK: define void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
+pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS {
+    loop {}
+}
 
 // CHECK: define void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
+pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS {
+    loop {}
+}
 
 // CHECK: define void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
-
+pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS {
+    loop {}
+}
 
 #[repr(C)]
 pub union BigU {
@@ -74,16 +84,24 @@ pub enum TeBigU {
 
 // CHECK: define void @test_BigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], [8 x i64]
 #[no_mangle]
-pub extern fn test_BigU(_: BigU) -> BigU { loop {} }
+pub extern "C" fn test_BigU(_: BigU) -> BigU {
+    loop {}
+}
 
 // CHECK: define void @test_TsBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
+pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU {
+    loop {}
+}
 
 // CHECK: define void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
+pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU {
+    loop {}
+}
 
 // CHECK: define void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2]], [8 x i64]
 #[no_mangle]
-pub extern fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}

tests/codegen/repr/transparent-sparc64.rs

@@ -8,15 +8,17 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 impl Copy for [u32; 16] {}
 impl Copy for BigS {}
 impl Copy for BigU {}
 
-
 #[repr(C)]
 pub struct BigS([u32; 16]);
 
@@ -37,26 +39,33 @@ pub enum TeBigS {
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_BigS(_: BigS) -> BigS { loop {} }
+pub extern "C" fn test_BigS(_: BigS) -> BigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
+pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
+pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
-
+pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS {
+    loop {}
+}
 
 #[repr(C)]
 pub union BigU {
@@ -80,22 +89,30 @@ pub enum TeBigU {
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_BigU(_: BigU) -> BigU { loop {} }
+pub extern "C" fn test_BigU(_: BigU) -> BigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TsBigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
+pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
+pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr
 // CHECK-NOT: byval
 // CHECK-SAME: %{{[0-9a-z_]+}})
 #[no_mangle]
-pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}

tests/codegen/repr/transparent-struct-ptr.rs

@@ -22,15 +22,17 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 impl Copy for [u32; 16] {}
 impl Copy for BigS {}
 impl Copy for BigU {}
 
-
 #[repr(C)]
 pub struct BigS([u32; 16]);
 
@@ -49,20 +51,27 @@ pub enum TeBigS {
 
 // CHECK: define{{.*}}void @test_BigS(ptr [[BIGS_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGS_RET_ATTRS2:.*]], ptr [[BIGS_ARG_ATTRS1:.*]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
 #[no_mangle]
-pub extern "C" fn test_BigS(_: BigS) -> BigS { loop {} }
+pub extern "C" fn test_BigS(_: BigS) -> BigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
 #[no_mangle]
-pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
+pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
 #[no_mangle]
-pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
+pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2]])
 #[no_mangle]
-pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
-
+pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS {
+    loop {}
+}
 
 #[repr(C)]
 pub union BigU {
@@ -84,16 +93,24 @@ pub enum TeBigU {
 
 // CHECK: define{{.*}}void @test_BigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1:.*]] byval([64 x i8]) [[BIGU_ARG_ATTRS2:.*]])
 #[no_mangle]
-pub extern "C" fn test_BigU(_: BigU) -> BigU { loop {} }
+pub extern "C" fn test_BigU(_: BigU) -> BigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TsBigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
 #[no_mangle]
-pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
+pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
 #[no_mangle]
-pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
+pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU {
+    loop {}
+}
 
 // CHECK: define{{.*}}void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
 #[no_mangle]
-pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}

tests/codegen/repr/transparent-sysv64.rs

@@ -13,19 +13,28 @@
 #![no_std]
 #![no_core]
 
-#[lang="sized"] trait Sized { }
-#[lang="freeze"] trait Freeze { }
-#[lang="copy"] trait Copy { }
+#[lang = "sized"]
+trait Sized {}
+#[lang = "freeze"]
+trait Freeze {}
+#[lang = "copy"]
+trait Copy {}
 
 #[repr(C)]
-pub struct Rgb8 { r: u8, g: u8, b: u8 }
+pub struct Rgb8 {
+    r: u8,
+    g: u8,
+    b: u8,
+}
 
 #[repr(transparent)]
 pub struct Rgb8Wrap(Rgb8);
 
 // CHECK: i24 @test_Rgb8Wrap(i24{{( %0)?}})
 #[no_mangle]
-pub extern "sysv64" fn test_Rgb8Wrap(_: Rgb8Wrap) -> Rgb8Wrap { loop {} }
+pub extern "sysv64" fn test_Rgb8Wrap(_: Rgb8Wrap) -> Rgb8Wrap {
+    loop {}
+}
 
 #[repr(C)]
 pub union FloatBits {
@@ -38,4 +47,6 @@ pub struct SmallUnion(FloatBits);
 
 // CHECK: i32 @test_SmallUnion(i32{{( %0)?}})
 #[no_mangle]
-pub extern "sysv64" fn test_SmallUnion(_: SmallUnion) -> SmallUnion { loop {} }
+pub extern "sysv64" fn test_SmallUnion(_: SmallUnion) -> SmallUnion {
+    loop {}
+}

tests/codegen/repr/transparent.rs

@@ -24,83 +24,112 @@ pub struct F32(f32);
 
 // CHECK: define{{.*}}float @test_F32(float noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_F32(_: F32) -> F32 { loop {} }
+pub extern "C" fn test_F32(_: F32) -> F32 {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct Ptr(*mut u8);
 
 // CHECK: define{{.*}}ptr @test_Ptr(ptr noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_Ptr(_: Ptr) -> Ptr { loop {} }
+pub extern "C" fn test_Ptr(_: Ptr) -> Ptr {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct WithZst(u64, Zst1);
 
 // CHECK: define{{.*}}i64 @test_WithZst(i64 noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_WithZst(_: WithZst) -> WithZst { loop {} }
+pub extern "C" fn test_WithZst(_: WithZst) -> WithZst {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct WithZeroSizedArray(*const f32, [i8; 0]);
 
 // CHECK: define{{.*}}ptr @test_WithZeroSizedArray(ptr noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_WithZeroSizedArray(_: WithZeroSizedArray) -> WithZeroSizedArray { loop {} }
+pub extern "C" fn test_WithZeroSizedArray(_: WithZeroSizedArray) -> WithZeroSizedArray {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct Generic<T>(T);
 
 // CHECK: define{{.*}}double @test_Generic(double noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_Generic(_: Generic<f64>) -> Generic<f64> { loop {} }
+pub extern "C" fn test_Generic(_: Generic<f64>) -> Generic<f64> {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct GenericPlusZst<T>(T, Zst2);
 
 #[repr(u8)]
-pub enum Bool { True, False, FileNotFound }
+pub enum Bool {
+    True,
+    False,
+    FileNotFound,
+}
 
 // CHECK: define{{( dso_local)?}} noundef{{( zeroext)?}} i8 @test_Gpz(i8 noundef{{( zeroext)?}} %_1)
 #[no_mangle]
-pub extern "C" fn test_Gpz(_: GenericPlusZst<Bool>) -> GenericPlusZst<Bool> { loop {} }
+pub extern "C" fn test_Gpz(_: GenericPlusZst<Bool>) -> GenericPlusZst<Bool> {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct LifetimePhantom<'a, T: 'a>(*const T, PhantomData<&'a T>);
 
 // CHECK: define{{.*}}ptr @test_LifetimePhantom(ptr noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_LifetimePhantom(_: LifetimePhantom<i16>) -> LifetimePhantom<i16> { loop {} }
+pub extern "C" fn test_LifetimePhantom(_: LifetimePhantom<i16>) -> LifetimePhantom<i16> {
+    loop {}
+}
 
 // This works despite current alignment resrictions because PhantomData is always align(1)
 #[repr(transparent)]
-pub struct UnitPhantom<T, U> { val: T, unit: PhantomData<U> }
+pub struct UnitPhantom<T, U> {
+    val: T,
+    unit: PhantomData<U>,
+}
 
 pub struct Px;
 
 // CHECK: define{{.*}}float @test_UnitPhantom(float noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_UnitPhantom(_: UnitPhantom<f32, Px>) -> UnitPhantom<f32, Px> { loop {} }
+pub extern "C" fn test_UnitPhantom(_: UnitPhantom<f32, Px>) -> UnitPhantom<f32, Px> {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct TwoZsts(Zst1, i8, Zst2);
 
 // CHECK: define{{( dso_local)?}} noundef{{( signext)?}} i8 @test_TwoZsts(i8 noundef{{( signext)?}} %_1)
 #[no_mangle]
-pub extern "C" fn test_TwoZsts(_: TwoZsts) -> TwoZsts { loop {} }
+pub extern "C" fn test_TwoZsts(_: TwoZsts) -> TwoZsts {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct Nested1(Zst2, Generic<f64>);
 
 // CHECK: define{{.*}}double @test_Nested1(double noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_Nested1(_: Nested1) -> Nested1 { loop {} }
+pub extern "C" fn test_Nested1(_: Nested1) -> Nested1 {
+    loop {}
+}
 
 #[repr(transparent)]
 pub struct Nested2(Nested1, Zst1);
 
 // CHECK: define{{.*}}double @test_Nested2(double noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_Nested2(_: Nested2) -> Nested2 { loop {} }
+pub extern "C" fn test_Nested2(_: Nested2) -> Nested2 {
+    loop {}
+}
 
 #[repr(simd)]
 struct f32x4(f32, f32, f32, f32);
@@ -110,35 +139,47 @@ pub struct Vector(f32x4);
 
 // CHECK: define{{.*}}<4 x float> @test_Vector(<4 x float> %_1)
 #[no_mangle]
-pub extern "C" fn test_Vector(_: Vector) -> Vector { loop {} }
+pub extern "C" fn test_Vector(_: Vector) -> Vector {
+    loop {}
+}
 
-trait Mirror { type It: ?Sized; }
-impl<T: ?Sized> Mirror for T { type It = Self; }
+trait Mirror {
+    type It: ?Sized;
+}
+impl<T: ?Sized> Mirror for T {
+    type It = Self;
+}
 
 #[repr(transparent)]
 pub struct StructWithProjection(<f32 as Mirror>::It);
 
 // CHECK: define{{.*}}float @test_Projection(float noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_Projection(_: StructWithProjection) -> StructWithProjection { loop {} }
+pub extern "C" fn test_Projection(_: StructWithProjection) -> StructWithProjection {
+    loop {}
+}
 
 #[repr(transparent)]
 pub enum EnumF32 {
-    Variant(F32)
+    Variant(F32),
 }
 
 // CHECK: define{{.*}}float @test_EnumF32(float noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_EnumF32(_: EnumF32) -> EnumF32 { loop {} }
+pub extern "C" fn test_EnumF32(_: EnumF32) -> EnumF32 {
+    loop {}
+}
 
 #[repr(transparent)]
 pub enum EnumF32WithZsts {
-    Variant(Zst1, F32, Zst2)
+    Variant(Zst1, F32, Zst2),
 }
 
 // CHECK: define{{.*}}float @test_EnumF32WithZsts(float noundef %_1)
 #[no_mangle]
-pub extern "C" fn test_EnumF32WithZsts(_: EnumF32WithZsts) -> EnumF32WithZsts { loop {} }
+pub extern "C" fn test_EnumF32WithZsts(_: EnumF32WithZsts) -> EnumF32WithZsts {
+    loop {}
+}
 
 #[repr(transparent)]
 pub union UnionF32 {
@@ -147,7 +188,9 @@ pub union UnionF32 {
 
 // CHECK: define{{.*}} float @test_UnionF32(float %_1)
 #[no_mangle]
-pub extern "C" fn test_UnionF32(_: UnionF32) -> UnionF32 { loop {} }
+pub extern "C" fn test_UnionF32(_: UnionF32) -> UnionF32 {
+    loop {}
+}
 
 #[repr(transparent)]
 pub union UnionF32WithZsts {
@@ -158,8 +201,9 @@ pub union UnionF32WithZsts {
 
 // CHECK: define{{.*}}float @test_UnionF32WithZsts(float %_1)
 #[no_mangle]
-pub extern "C" fn test_UnionF32WithZsts(_: UnionF32WithZsts) -> UnionF32WithZsts { loop {} }
-
+pub extern "C" fn test_UnionF32WithZsts(_: UnionF32WithZsts) -> UnionF32WithZsts {
+    loop {}
+}
 
 // All that remains to be tested are aggregates. They are tested in separate files called
 // transparent-*.rs  with `only-*` or `ignore-*` directives, because the expected LLVM IR

tests/codegen/riscv-abi/riscv64-lp64-lp64f-lp64d-abi.rs

@@ -83,8 +83,7 @@ pub struct Tiny {
 
 // CHECK: define void @f_agg_tiny(i64 %0)
 #[no_mangle]
-pub extern "C" fn f_agg_tiny(mut e: Tiny) {
-}
+pub extern "C" fn f_agg_tiny(mut e: Tiny) {}
 
 // CHECK: define i64 @f_agg_tiny_ret()
 #[no_mangle]
@@ -100,8 +99,7 @@ pub struct Small {
 
 // CHECK: define void @f_agg_small([2 x i64] %0)
 #[no_mangle]
-pub extern "C" fn f_agg_small(mut x: Small) {
-}
+pub extern "C" fn f_agg_small(mut x: Small) {}
 
 // CHECK: define [2 x i64] @f_agg_small_ret()
 #[no_mangle]
@@ -116,8 +114,7 @@ pub struct SmallAligned {
 
 // CHECK: define void @f_agg_small_aligned(i128 %0)
 #[no_mangle]
-pub extern "C" fn f_agg_small_aligned(mut x: SmallAligned) {
-}
+pub extern "C" fn f_agg_small_aligned(mut x: SmallAligned) {}
 
 #[repr(C)]
 pub struct Large {
@@ -129,8 +126,7 @@ pub struct Large {
 
 // CHECK: define void @f_agg_large(ptr {{.*}}%x)
 #[no_mangle]
-pub extern "C" fn f_agg_large(mut x: Large) {
-}
+pub extern "C" fn f_agg_large(mut x: Large) {}
 
 // CHECK: define void @f_agg_large_ret(ptr {{.*}}sret{{.*}}, i32 noundef signext %i, i8 noundef signext %j)
 #[no_mangle]

tests/codegen/sanitizer/cfi/add-canonical-jump-tables-flag.rs

@@ -5,7 +5,6 @@
 
 #![crate_type = "lib"]
 
-pub fn foo() {
-}
+pub fn foo() {}
 
 // CHECK: !{{[0-9]+}} = !{i32 4, !"CFI Canonical Jump Tables", i32 1}

tests/codegen/sanitizer/cfi/add-enable-split-lto-unit-flag.rs

@@ -5,7 +5,6 @@
 
 #![crate_type = "lib"]
 
-pub fn foo() {
-}
+pub fn foo() {}
 
 // CHECK: !{{[0-9]+}} = !{i32 4, !"EnableSplitLTOUnit", i32 1}

tests/codegen/sanitizer/cfi/emit-type-metadata-attr-cfi-encoding.rs

@@ -9,7 +9,7 @@
 #[cfi_encoding = "3Foo"]
 pub struct Type1(i32);
 
-extern {
+extern "C" {
     #[cfi_encoding = "3Bar"]
     type Type2;
 }

tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-const-generics.rs

@@ -11,7 +11,8 @@ extern crate core;
 
 pub type Type1 = impl Send;
 
-pub fn foo() where
+pub fn foo()
+where
     Type1: 'static,
 {
     pub struct Foo<T, const N: usize>([T; N]);

tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-lifetimes.rs

@@ -11,7 +11,8 @@ extern crate core;
 
 pub type Type1 = impl Send;
 
-pub fn foo<'a>() where
+pub fn foo<'a>()
+where
     Type1: 'static,
 {
     pub struct Foo<'a>(&'a i32);