diff --git a/tests/codegen/box-maybe-uninit-llvm14.rs b/tests/codegen/box-maybe-uninit-llvm14.rs
index b0c88f76c43..c9f88fb3fe4 100644
--- a/tests/codegen/box-maybe-uninit-llvm14.rs
+++ b/tests/codegen/box-maybe-uninit-llvm14.rs
@@ -31,4 +31,4 @@ pub fn box_uninitialized2() -> Box<MaybeUninit<[usize; 1024 * 1024]>> {
 // Hide the LLVM 15+ `allocalign` attribute in the declaration of __rust_alloc
 // from the CHECK-NOT above. We don't check the attributes here because we can't rely
 // on all of them being set until LLVM 15.
-// CHECK: declare noalias{{.*}} @__rust_alloc(i{{[0-9]+}} noundef, i{{[0-9]+.*}} noundef)
+// CHECK: declare {{(dso_local )?}}noalias{{.*}} @__rust_alloc(i{{[0-9]+}} noundef, i{{[0-9]+.*}} noundef)
diff --git a/tests/codegen/box-maybe-uninit.rs b/tests/codegen/box-maybe-uninit.rs
index 2f88966996a..9f079e99b9c 100644
--- a/tests/codegen/box-maybe-uninit.rs
+++ b/tests/codegen/box-maybe-uninit.rs
@@ -28,6 +28,6 @@ pub fn box_uninitialized2() -> Box<MaybeUninit<[usize; 1024 * 1024]>> {
 
 // Hide the `allocalign` attribute in the declaration of __rust_alloc
 // from the CHECK-NOT above, and also verify the attributes got set reasonably.
-// CHECK: declare noalias noundef ptr @__rust_alloc(i{{[0-9]+}} noundef, i{{[0-9]+}} allocalign noundef) unnamed_addr [[RUST_ALLOC_ATTRS:#[0-9]+]]
+// CHECK: declare {{(dso_local )?}}noalias noundef ptr @__rust_alloc(i{{[0-9]+}} noundef, i{{[0-9]+}} allocalign noundef) unnamed_addr [[RUST_ALLOC_ATTRS:#[0-9]+]]
 
 // CHECK-DAG: attributes [[RUST_ALLOC_ATTRS]] = { {{.*}} allockind("alloc,uninitialized,aligned") allocsize(0) uwtable "alloc-family"="__rust_alloc" {{.*}} }
diff --git a/tests/codegen/external-no-mangle-statics.rs b/tests/codegen/external-no-mangle-statics.rs
index c6ecb7aa96a..48023a2a901 100644
--- a/tests/codegen/external-no-mangle-statics.rs
+++ b/tests/codegen/external-no-mangle-statics.rs
@@ -6,72 +6,72 @@
 // `#[no_mangle]`d static variables always have external linkage, i.e., no `internal` in their
 // definitions
 
-// CHECK: @A = local_unnamed_addr constant
+// CHECK: @A = {{(dso_local )?}}local_unnamed_addr constant
 #[no_mangle]
 static A: u8 = 0;
 
-// CHECK: @B = local_unnamed_addr global
+// CHECK: @B = {{(dso_local )?}}local_unnamed_addr global
 #[no_mangle]
 static mut B: u8 = 0;
 
-// CHECK: @C = local_unnamed_addr constant
+// CHECK: @C = {{(dso_local )?}}local_unnamed_addr constant
 #[no_mangle]
 pub static C: u8 = 0;
 
-// CHECK: @D = local_unnamed_addr global
+// CHECK: @D = {{(dso_local )?}}local_unnamed_addr global
 #[no_mangle]
 pub static mut D: u8 = 0;
 
 mod private {
-    // CHECK: @E = local_unnamed_addr constant
+    // CHECK: @E = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     static E: u8 = 0;
 
-    // CHECK: @F = local_unnamed_addr global
+    // CHECK: @F = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     static mut F: u8 = 0;
 
-    // CHECK: @G = local_unnamed_addr constant
+    // CHECK: @G = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     pub static G: u8 = 0;
 
-    // CHECK: @H = local_unnamed_addr global
+    // CHECK: @H = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     pub static mut H: u8 = 0;
 }
 
 const HIDDEN: () = {
-    // CHECK: @I = local_unnamed_addr constant
+    // CHECK: @I = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     static I: u8 = 0;
 
-    // CHECK: @J = local_unnamed_addr global
+    // CHECK: @J = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     static mut J: u8 = 0;
 
-    // CHECK: @K = local_unnamed_addr constant
+    // CHECK: @K = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     pub static K: u8 = 0;
 
-    // CHECK: @L = local_unnamed_addr global
+    // CHECK: @L = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     pub static mut L: u8 = 0;
 };
 
 fn x() {
-    // CHECK: @M = local_unnamed_addr constant
+    // CHECK: @M = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     static M: fn() = x;
 
-    // CHECK: @N = local_unnamed_addr global
+    // CHECK: @N = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     static mut N: u8 = 0;
 
-    // CHECK: @O = local_unnamed_addr constant
+    // CHECK: @O = {{(dso_local )?}}local_unnamed_addr constant
     #[no_mangle]
     pub static O: u8 = 0;
 
-    // CHECK: @P = local_unnamed_addr global
+    // CHECK: @P = {{(dso_local )?}}local_unnamed_addr global
     #[no_mangle]
     pub static mut P: u8 = 0;
 }
diff --git a/tests/codegen/issues/issue-86106.rs b/tests/codegen/issues/issue-86106.rs
index c0be7fab2f3..be5034dcfbd 100644
--- a/tests/codegen/issues/issue-86106.rs
+++ b/tests/codegen/issues/issue-86106.rs
@@ -7,7 +7,7 @@
 
 #![crate_type = "lib"]
 
-// CHECK-LABEL: define void @string_new
+// CHECK-LABEL: define {{(dso_local )?}}void @string_new
 #[no_mangle]
 pub fn string_new() -> String {
     // CHECK: store ptr inttoptr
@@ -17,7 +17,7 @@ pub fn string_new() -> String {
     String::new()
 }
 
-// CHECK-LABEL: define void @empty_to_string
+// CHECK-LABEL: define {{(dso_local )?}}void @empty_to_string
 #[no_mangle]
 pub fn empty_to_string() -> String {
     // CHECK: store ptr inttoptr
diff --git a/tests/codegen/link_section.rs b/tests/codegen/link_section.rs
index 88b8692b0ac..2b26b604ad3 100644
--- a/tests/codegen/link_section.rs
+++ b/tests/codegen/link_section.rs
@@ -3,7 +3,7 @@
 
 #![crate_type = "lib"]
 
-// CHECK: @VAR1 = constant <{ [4 x i8] }> <{ [4 x i8] c"\01\00\00\00" }>, section ".test_one"
+// CHECK: @VAR1 = {{(dso_local )?}}constant <{ [4 x i8] }> <{ [4 x i8] c"\01\00\00\00" }>, section ".test_one"
 #[no_mangle]
 #[link_section = ".test_one"]
 #[cfg(target_endian = "little")]
@@ -19,17 +19,17 @@ pub enum E {
     B(f32)
 }
 
-// CHECK: @VAR2 = constant {{.*}}, section ".test_two"
+// CHECK: @VAR2 = {{(dso_local )?}}constant {{.*}}, section ".test_two"
 #[no_mangle]
 #[link_section = ".test_two"]
 pub static VAR2: E = E::A(666);
 
-// CHECK: @VAR3 = constant {{.*}}, section ".test_three"
+// CHECK: @VAR3 = {{(dso_local )?}}constant {{.*}}, section ".test_three"
 #[no_mangle]
 #[link_section = ".test_three"]
 pub static VAR3: E = E::B(1.);
 
-// CHECK: define void @fn1() {{.*}} section ".test_four" {
+// CHECK: define {{(dso_local )?}}void @fn1() {{.*}} section ".test_four" {
 #[no_mangle]
 #[link_section = ".test_four"]
 pub fn fn1() {}
diff --git a/tests/codegen/naked-noinline.rs b/tests/codegen/naked-noinline.rs
index c0ac69f4ed7..5cfb500c0ef 100644
--- a/tests/codegen/naked-noinline.rs
+++ b/tests/codegen/naked-noinline.rs
@@ -12,7 +12,7 @@ use std::arch::asm;
 pub unsafe extern "C" fn f() {
     // Check that f has naked and noinline attributes.
     //
-    // CHECK:       define void @f() unnamed_addr [[ATTR:#[0-9]+]]
+    // CHECK:       define {{(dso_local )?}}void @f() unnamed_addr [[ATTR:#[0-9]+]]
     // CHECK-NEXT:  start:
     // CHECK-NEXT:    call void asm
     asm!("", options(noreturn));
@@ -22,7 +22,7 @@ pub unsafe extern "C" fn f() {
 pub unsafe fn g() {
     // Check that call to f is not inlined.
     //
-    // CHECK-LABEL: define void @g()
+    // CHECK-LABEL: define {{(dso_local )?}}void @g()
     // CHECK-NEXT:  start:
     // CHECK-NEXT:    call void @f()
     f();
diff --git a/tests/codegen/ptr-read-metadata.rs b/tests/codegen/ptr-read-metadata.rs
index e1e3272662c..73d1db6df27 100644
--- a/tests/codegen/ptr-read-metadata.rs
+++ b/tests/codegen/ptr-read-metadata.rs
@@ -9,7 +9,7 @@
 
 use std::mem::MaybeUninit;
 
-// CHECK-LABEL: define noundef i8 @copy_byte(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i8 @copy_byte(
 #[no_mangle]
 pub unsafe fn copy_byte(p: *const u8) -> u8 {
     // CHECK-NOT: load
@@ -19,7 +19,7 @@ pub unsafe fn copy_byte(p: *const u8) -> u8 {
     *p
 }
 
-// CHECK-LABEL: define noundef i8 @read_byte(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i8 @read_byte(
 #[no_mangle]
 pub unsafe fn read_byte(p: *const u8) -> u8 {
     // CHECK-NOT: load
@@ -29,7 +29,7 @@ pub unsafe fn read_byte(p: *const u8) -> u8 {
     p.read()
 }
 
-// CHECK-LABEL: define i8 @read_byte_maybe_uninit(
+// CHECK-LABEL: define {{(dso_local )?}}i8 @read_byte_maybe_uninit(
 #[no_mangle]
 pub unsafe fn read_byte_maybe_uninit(p: *const MaybeUninit<u8>) -> MaybeUninit<u8> {
     // CHECK-NOT: load
@@ -39,7 +39,7 @@ pub unsafe fn read_byte_maybe_uninit(p: *const MaybeUninit<u8>) -> MaybeUninit<u
     p.read()
 }
 
-// CHECK-LABEL: define noundef i8 @read_byte_assume_init(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i8 @read_byte_assume_init(
 #[no_mangle]
 pub unsafe fn read_byte_assume_init(p: &MaybeUninit<u8>) -> u8 {
     // CHECK-NOT: load
@@ -49,7 +49,7 @@ pub unsafe fn read_byte_assume_init(p: &MaybeUninit<u8>) -> u8 {
     p.assume_init_read()
 }
 
-// CHECK-LABEL: define noundef i32 @copy_char(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i32 @copy_char(
 #[no_mangle]
 pub unsafe fn copy_char(p: *const char) -> char {
     // CHECK-NOT: load
@@ -60,7 +60,7 @@ pub unsafe fn copy_char(p: *const char) -> char {
     *p
 }
 
-// CHECK-LABEL: define noundef i32 @read_char(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i32 @read_char(
 #[no_mangle]
 pub unsafe fn read_char(p: *const char) -> char {
     // CHECK-NOT: load
@@ -71,7 +71,7 @@ pub unsafe fn read_char(p: *const char) -> char {
     p.read()
 }
 
-// CHECK-LABEL: define i32 @read_char_maybe_uninit(
+// CHECK-LABEL: define {{(dso_local )?}}i32 @read_char_maybe_uninit(
 #[no_mangle]
 pub unsafe fn read_char_maybe_uninit(p: *const MaybeUninit<char>) -> MaybeUninit<char> {
     // CHECK-NOT: load
@@ -82,7 +82,7 @@ pub unsafe fn read_char_maybe_uninit(p: *const MaybeUninit<char>) -> MaybeUninit
     p.read()
 }
 
-// CHECK-LABEL: define noundef i32 @read_char_assume_init(
+// CHECK-LABEL: define {{(dso_local )?}}noundef i32 @read_char_assume_init(
 #[no_mangle]
 pub unsafe fn read_char_assume_init(p: &MaybeUninit<char>) -> char {
     // CHECK-NOT: load
diff --git a/tests/codegen/tuple-layout-opt.rs b/tests/codegen/tuple-layout-opt.rs
index 35f76085145..309fe1d5ec9 100644
--- a/tests/codegen/tuple-layout-opt.rs
+++ b/tests/codegen/tuple-layout-opt.rs
@@ -6,31 +6,31 @@
 #![crate_type="lib"]
 
 type ScalarZstLast = (u128, ());
-// CHECK: define i128 @test_ScalarZstLast(i128 %_1)
+// CHECK: define {{(dso_local )?}}i128 @test_ScalarZstLast(i128 %_1)
 #[no_mangle]
 pub fn test_ScalarZstLast(_: ScalarZstLast) -> ScalarZstLast { loop {} }
 
 type ScalarZstFirst = ((), u128);
-// CHECK: define i128 @test_ScalarZstFirst(i128 %_1)
+// CHECK: define {{(dso_local )?}}i128 @test_ScalarZstFirst(i128 %_1)
 #[no_mangle]
 pub fn test_ScalarZstFirst(_: ScalarZstFirst) -> ScalarZstFirst { loop {} }
 
 type ScalarPairZstLast = (u8, u128, ());
-// CHECK: define { i128, i8 } @test_ScalarPairZstLast(i128 %_1.0, i8 %_1.1)
+// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairZstLast(i128 %_1.0, i8 %_1.1)
 #[no_mangle]
 pub fn test_ScalarPairZstLast(_: ScalarPairZstLast) -> ScalarPairZstLast { loop {} }
 
 type ScalarPairZstFirst = ((), u8, u128);
-// CHECK: define { i8, i128 } @test_ScalarPairZstFirst(i8 %_1.0, i128 %_1.1)
+// CHECK: define {{(dso_local )?}}{ i8, i128 } @test_ScalarPairZstFirst(i8 %_1.0, i128 %_1.1)
 #[no_mangle]
 pub fn test_ScalarPairZstFirst(_: ScalarPairZstFirst) -> ScalarPairZstFirst { loop {} }
 
 type ScalarPairLotsOfZsts = ((), u8, (), u128, ());
-// CHECK: define { i128, i8 } @test_ScalarPairLotsOfZsts(i128 %_1.0, i8 %_1.1)
+// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairLotsOfZsts(i128 %_1.0, i8 %_1.1)
 #[no_mangle]
 pub fn test_ScalarPairLotsOfZsts(_: ScalarPairLotsOfZsts) -> ScalarPairLotsOfZsts { loop {} }
 
 type ScalarPairLottaNesting = (((), ((), u8, (), u128, ())), ());
-// CHECK: define { i128, i8 } @test_ScalarPairLottaNesting(i128 %_1.0, i8 %_1.1)
+// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairLottaNesting(i128 %_1.0, i8 %_1.1)
 #[no_mangle]
 pub fn test_ScalarPairLottaNesting(_: ScalarPairLottaNesting) -> ScalarPairLottaNesting { loop {} }
diff --git a/tests/codegen/union-abi.rs b/tests/codegen/union-abi.rs
index c18f2a49fc3..8481ca8ccfa 100644
--- a/tests/codegen/union-abi.rs
+++ b/tests/codegen/union-abi.rs
@@ -17,60 +17,60 @@ pub struct i64x4(i64, i64, i64, i64);
 #[derive(Copy, Clone)]
 pub union UnionI64x4{ a:(), b: i64x4 }
 
-// CHECK: define void @test_UnionI64x4({{<4 x i64>\*|ptr}} {{.*}} %_1)
+// CHECK: define {{(dso_local )?}}void @test_UnionI64x4({{<4 x i64>\*|ptr}} {{.*}} %_1)
 #[no_mangle]
 pub fn test_UnionI64x4(_: UnionI64x4) { loop {} }
 
 pub union UnionI64x4_{ a: i64x4, b: (), c:i64x4, d: Unhab, e: ((),()), f: UnionI64x4 }
 
-// CHECK: define void @test_UnionI64x4_({{<4 x i64>\*|ptr}} {{.*}} %_1)
+// CHECK: define {{(dso_local )?}}void @test_UnionI64x4_({{<4 x i64>\*|ptr}} {{.*}} %_1)
 #[no_mangle]
 pub fn test_UnionI64x4_(_: UnionI64x4_) { loop {} }
 
 pub union UnionI64x4I64{ a: i64x4, b: i64 }
 
-// CHECK: define void @test_UnionI64x4I64({{%UnionI64x4I64\*|ptr}} {{.*}} %_1)
+// CHECK: define {{(dso_local )?}}void @test_UnionI64x4I64({{%UnionI64x4I64\*|ptr}} {{.*}} %_1)
 #[no_mangle]
 pub fn test_UnionI64x4I64(_: UnionI64x4I64) { loop {} }
 
 pub union UnionI64x4Tuple{ a: i64x4, b: (i64, i64, i64, i64) }
 
-// CHECK: define void @test_UnionI64x4Tuple({{%UnionI64x4Tuple\*|ptr}} {{.*}} %_1)
+// CHECK: define {{(dso_local )?}}void @test_UnionI64x4Tuple({{%UnionI64x4Tuple\*|ptr}} {{.*}} %_1)
 #[no_mangle]
 pub fn test_UnionI64x4Tuple(_: UnionI64x4Tuple) { loop {} }
 
 
 pub union UnionF32{a:f32}
 
-// CHECK: define float @test_UnionF32(float %_1)
+// CHECK: define {{(dso_local )?}}float @test_UnionF32(float %_1)
 #[no_mangle]
 pub fn test_UnionF32(_: UnionF32) -> UnionF32 { loop {} }
 
 pub union UnionF32F32{a:f32, b:f32}
 
-// CHECK: define float @test_UnionF32F32(float %_1)
+// CHECK: define {{(dso_local )?}}float @test_UnionF32F32(float %_1)
 #[no_mangle]
 pub fn test_UnionF32F32(_: UnionF32F32) -> UnionF32F32 { loop {} }
 
 pub union UnionF32U32{a:f32, b:u32}
 
-// CHECK: define i32 @test_UnionF32U32(i32{{( %0)?}})
+// CHECK: define {{(dso_local )?}}i32 @test_UnionF32U32(i32{{( %0)?}})
 #[no_mangle]
 pub fn test_UnionF32U32(_: UnionF32U32) -> UnionF32U32 { loop {} }
 
 pub union UnionU128{a:u128}
-// CHECK: define i128 @test_UnionU128(i128 %_1)
+// CHECK: define {{(dso_local )?}}i128 @test_UnionU128(i128 %_1)
 #[no_mangle]
 pub fn test_UnionU128(_: UnionU128) -> UnionU128 { loop {} }
 
 #[repr(C)]
 pub union CUnionU128{a:u128}
-// CHECK: define void @test_CUnionU128({{%CUnionU128\*|ptr}} {{.*}} %_1)
+// CHECK: define {{(dso_local )?}}void @test_CUnionU128({{%CUnionU128\*|ptr}} {{.*}} %_1)
 #[no_mangle]
 pub fn test_CUnionU128(_: CUnionU128) { loop {} }
 
 pub union UnionBool { b:bool }
-// CHECK: define noundef zeroext i1 @test_UnionBool(i8 %b)
+// CHECK: define {{(dso_local )?}}noundef zeroext i1 @test_UnionBool(i8 %b)
 #[no_mangle]
 pub fn test_UnionBool(b: UnionBool) -> bool { unsafe { b.b }  }
 // CHECK: %0 = trunc i8 %b to i1