Auto merge of #128651 - folkertdev:naked-asm-macro-v2, r=Amanieu

add `naked_asm!` macro for use in `#[naked]` functions

tracking issue: https://github.com/rust-lang/rust/issues/90957

Adds the `core::arch::naked_asm` macro, to be used in `#[naked]` functions, but providing better error messages and a place to explain the restrictions on assembly in naked functions.

This PR does not yet require that the `naked_asm!` macro is used inside of `#[naked]` functions:

- the `asm!` macro can still be used in `#[naked]` functions currently, with the same restrictions and error messages as before.
- the `naked_asm!` macro can be used outside of `#[naked]` functions. It has not yet been decided whether that should be allowed long-term.

In this PR, the parsing code of `naked_asm!` now enforces the restrictions on assembly in naked functions, with the exception of checking that the `noreturn` option is specified. It also has not currently been decided if `noreturn` should be implicit or not.

This PR looks large because it touches a bunch of tests. The code changes are mostly straightforward I think: we now have 3 flavors of assembly macro, and that information must be propagated through the parsing code and error messages.

cc `@Lokathor`

r? `@Amanieu`

27 files changed, 306 insertions, 311 deletions

diff --git a/tests/assembly/aarch64-naked-fn-no-bti-prolog.rs b/tests/assembly/aarch64-naked-fn-no-bti-prolog.rs
index 8ee6f6792e9..46e627eaa00 100644
--- a/tests/assembly/aarch64-naked-fn-no-bti-prolog.rs
+++ b/tests/assembly/aarch64-naked-fn-no-bti-prolog.rs
@@ -5,7 +5,7 @@
 
 #![crate_type = "lib"]
 #![feature(naked_functions)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 // The problem at hand: Rust has adopted a fairly strict meaning for "naked functions",
 // meaning "no prologue whatsoever, no, really, not one instruction."
@@ -17,5 +17,5 @@ use std::arch::asm;
 pub unsafe extern "C" fn _hlt() -> ! {
     // CHECK-NOT: hint #34
     // CHECK: hlt #0x1
-    asm!("hlt #1", options(noreturn))
+    naked_asm!("hlt #1")
 }
diff --git a/tests/assembly/x86_64-naked-fn-no-cet-prolog.rs b/tests/assembly/x86_64-naked-fn-no-cet-prolog.rs
index a5683874182..54e1d93c68b 100644
--- a/tests/assembly/x86_64-naked-fn-no-cet-prolog.rs
+++ b/tests/assembly/x86_64-naked-fn-no-cet-prolog.rs
@@ -5,7 +5,7 @@
 
 #![crate_type = "lib"]
 #![feature(naked_functions)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 // The problem at hand: Rust has adopted a fairly strict meaning for "naked functions",
 // meaning "no prologue whatsoever, no, really, not one instruction."
@@ -17,7 +17,7 @@ use std::arch::asm;
 pub unsafe extern "sysv64" fn will_halt() -> ! {
     // CHECK-NOT: endbr{{32|64}}
     // CHECK: hlt
-    asm!("hlt", options(noreturn))
+    naked_asm!("hlt")
 }
 
 // what about aarch64?
diff --git a/tests/codegen/cffi/c-variadic-naked.rs b/tests/codegen/cffi/c-variadic-naked.rs
index 807873ea368..24b69c5f59e 100644
--- a/tests/codegen/cffi/c-variadic-naked.rs
+++ b/tests/codegen/cffi/c-variadic-naked.rs
@@ -12,8 +12,7 @@
 pub unsafe extern "C" fn c_variadic(_: usize, _: ...) {
     // CHECK-NOT: va_start
     // CHECK-NOT: alloca
-    core::arch::asm! {
+    core::arch::naked_asm! {
         "ret",
-        options(noreturn),
     }
 }
diff --git a/tests/codegen/naked-asan.rs b/tests/codegen/naked-asan.rs
index ac36018eed3..bcaa60baeff 100644
--- a/tests/codegen/naked-asan.rs
+++ b/tests/codegen/naked-asan.rs
@@ -14,7 +14,7 @@
 #[no_mangle]
 pub extern "x86-interrupt" fn page_fault_handler(_: u64, _: u64) {
     unsafe {
-        core::arch::asm!("ud2", options(noreturn));
+        core::arch::naked_asm!("ud2");
     }
 }
 
diff --git a/tests/codegen/naked-fn/aligned.rs b/tests/codegen/naked-fn/aligned.rs
index d5faac44836..3bbd67981e5 100644
--- a/tests/codegen/naked-fn/aligned.rs
+++ b/tests/codegen/naked-fn/aligned.rs
@@ -4,7 +4,7 @@
 
 #![crate_type = "lib"]
 #![feature(naked_functions, fn_align)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 // CHECK: Function Attrs: naked
 // CHECK-NEXT: define{{.*}}void @naked_empty()
@@ -16,5 +16,5 @@ pub unsafe extern "C" fn naked_empty() {
     // CHECK-NEXT: start:
     // CHECK-NEXT: call void asm
     // CHECK-NEXT: unreachable
-    asm!("ret", options(noreturn));
+    naked_asm!("ret");
 }
diff --git a/tests/codegen/naked-fn/naked-functions.rs b/tests/codegen/naked-fn/naked-functions.rs
index 307745a921c..3f7447af599 100644
--- a/tests/codegen/naked-fn/naked-functions.rs
+++ b/tests/codegen/naked-fn/naked-functions.rs
@@ -4,7 +4,7 @@
 
 #![crate_type = "lib"]
 #![feature(naked_functions)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 // CHECK: Function Attrs: naked
 // CHECK-NEXT: define{{.*}}void @naked_empty()
@@ -14,7 +14,7 @@ pub unsafe extern "C" fn naked_empty() {
     // CHECK-NEXT: {{.+}}:
     // CHECK-NEXT: call void asm
     // CHECK-NEXT: unreachable
-    asm!("ret", options(noreturn));
+    naked_asm!("ret");
 }
 
 // CHECK: Function Attrs: naked
@@ -25,5 +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));
+    naked_asm!("lea rax, [rdi + rsi]", "ret");
 }
diff --git a/tests/codegen/naked-fn/naked-nocoverage.rs b/tests/codegen/naked-fn/naked-nocoverage.rs
index d73c5b7fd26..f63661bcd3a 100644
--- a/tests/codegen/naked-fn/naked-nocoverage.rs
+++ b/tests/codegen/naked-fn/naked-nocoverage.rs
@@ -6,7 +6,7 @@
 //@ compile-flags: -Cinstrument-coverage
 #![crate_type = "lib"]
 #![feature(naked_functions)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[naked]
 #[no_mangle]
@@ -15,5 +15,5 @@ pub unsafe extern "C" fn f() {
     // CHECK-NEXT:  start:
     // CHECK-NEXT:    call void asm
     // CHECK-NEXT:    unreachable
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
diff --git a/tests/codegen/naked-fn/naked-noinline.rs b/tests/codegen/naked-fn/naked-noinline.rs
index c1e8f368249..6ea36d96783 100644
--- a/tests/codegen/naked-fn/naked-noinline.rs
+++ b/tests/codegen/naked-fn/naked-noinline.rs
@@ -5,7 +5,7 @@
 #![crate_type = "lib"]
 #![feature(naked_functions)]
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[naked]
 #[no_mangle]
@@ -15,7 +15,7 @@ pub unsafe extern "C" fn f() {
     // CHECK:       define {{(dso_local )?}}void @f() unnamed_addr [[ATTR:#[0-9]+]]
     // CHECK-NEXT:  start:
     // CHECK-NEXT:    call void asm
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
 
 #[no_mangle]
diff --git a/tests/crashes/124375.rs b/tests/crashes/124375.rs
index 7165655178d..1d877caeb8b 100644
--- a/tests/crashes/124375.rs
+++ b/tests/crashes/124375.rs
@@ -3,9 +3,9 @@
 //@ only-x86_64
 #![crate_type = "lib"]
 #![feature(naked_functions)]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[naked]
 pub unsafe extern "C" fn naked_with_args_and_return(a: isize, b: isize) -> isize {
-    asm!("lea rax, [rdi + rsi]", "ret", options(noreturn));
+    naked_asm!("lea rax, [rdi + rsi]", "ret");
 }
diff --git a/tests/run-make/naked-symbol-visibility/a_rust_dylib.rs b/tests/run-make/naked-symbol-visibility/a_rust_dylib.rs
index f00123f006b..8dd19e613bf 100644
--- a/tests/run-make/naked-symbol-visibility/a_rust_dylib.rs
+++ b/tests/run-make/naked-symbol-visibility/a_rust_dylib.rs
@@ -1,7 +1,7 @@
 #![feature(naked_functions, asm_const, linkage)]
 #![crate_type = "dylib"]
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 pub trait TraitWithConst {
     const COUNT: u32;
@@ -28,7 +28,7 @@ extern "C" fn private_vanilla() -> u32 {
 
 #[naked]
 extern "C" fn private_naked() -> u32 {
-    unsafe { asm!("mov rax, 42", "ret", options(noreturn)) }
+    unsafe { naked_asm!("mov rax, 42", "ret") }
 }
 
 #[no_mangle]
@@ -39,7 +39,7 @@ pub extern "C" fn public_vanilla() -> u32 {
 #[naked]
 #[no_mangle]
 pub extern "C" fn public_naked() -> u32 {
-    unsafe { asm!("mov rax, 42", "ret", options(noreturn)) }
+    unsafe { naked_asm!("mov rax, 42", "ret") }
 }
 
 pub extern "C" fn public_vanilla_generic<T: TraitWithConst>() -> u32 {
@@ -48,7 +48,7 @@ pub extern "C" fn public_vanilla_generic<T: TraitWithConst>() -> u32 {
 
 #[naked]
 pub extern "C" fn public_naked_generic<T: TraitWithConst>() -> u32 {
-    unsafe { asm!("mov rax, {}", "ret", const T::COUNT, options(noreturn)) }
+    unsafe { naked_asm!("mov rax, {}", "ret", const T::COUNT) }
 }
 
 #[linkage = "external"]
@@ -59,7 +59,7 @@ extern "C" fn vanilla_external_linkage() -> u32 {
 #[naked]
 #[linkage = "external"]
 extern "C" fn naked_external_linkage() -> u32 {
-    unsafe { asm!("mov rax, 42", "ret", options(noreturn)) }
+    unsafe { naked_asm!("mov rax, 42", "ret") }
 }
 
 #[cfg(not(windows))]
@@ -72,7 +72,7 @@ extern "C" fn vanilla_weak_linkage() -> u32 {
 #[cfg(not(windows))]
 #[linkage = "weak"]
 extern "C" fn naked_weak_linkage() -> u32 {
-    unsafe { asm!("mov rax, 42", "ret", options(noreturn)) }
+    unsafe { naked_asm!("mov rax, 42", "ret") }
 }
 
 // functions that are declared in an `extern "C"` block are currently not exported
diff --git a/tests/ui/asm/naked-functions-ffi.rs b/tests/ui/asm/naked-functions-ffi.rs
index 93d23885b13..b78d1e6a0d1 100644
--- a/tests/ui/asm/naked-functions-ffi.rs
+++ b/tests/ui/asm/naked-functions-ffi.rs
@@ -3,13 +3,13 @@
 #![feature(naked_functions)]
 #![crate_type = "lib"]
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[naked]
 pub extern "C" fn naked(p: char) -> u128 {
     //~^ WARN uses type `char`
     //~| WARN uses type `u128`
     unsafe {
-        asm!("", options(noreturn));
+        naked_asm!("");
     }
 }
diff --git a/tests/ui/asm/naked-functions-instruction-set.rs b/tests/ui/asm/naked-functions-instruction-set.rs
index b81b65cff74..37c7b52c191 100644
--- a/tests/ui/asm/naked-functions-instruction-set.rs
+++ b/tests/ui/asm/naked-functions-instruction-set.rs
@@ -8,7 +8,7 @@
 #![no_core]
 
 #[rustc_builtin_macro]
-macro_rules! asm {
+macro_rules! naked_asm {
     () => {};
 }
 
@@ -19,12 +19,12 @@ trait Sized {}
 #[naked]
 #[instruction_set(arm::t32)]
 unsafe extern "C" fn test_thumb() {
-    asm!("bx lr", options(noreturn));
+    naked_asm!("bx lr");
 }
 
 #[no_mangle]
 #[naked]
 #[instruction_set(arm::t32)]
 unsafe extern "C" fn test_arm() {
-    asm!("bx lr", options(noreturn));
+    naked_asm!("bx lr");
 }
diff --git a/tests/ui/asm/naked-functions-testattrs.rs b/tests/ui/asm/naked-functions-testattrs.rs
index 12943ac0378..7e373270e9f 100644
--- a/tests/ui/asm/naked-functions-testattrs.rs
+++ b/tests/ui/asm/naked-functions-testattrs.rs
@@ -6,13 +6,13 @@
 #![feature(test)]
 #![crate_type = "lib"]
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[test]
 #[naked]
 //~^ ERROR [E0736]
 fn test_naked() {
-    unsafe { asm!("", options(noreturn)) };
+    unsafe { naked_asm!("") };
 }
 
 #[should_panic]
@@ -20,7 +20,7 @@ fn test_naked() {
 #[naked]
 //~^ ERROR [E0736]
 fn test_naked_should_panic() {
-    unsafe { asm!("", options(noreturn)) };
+    unsafe { naked_asm!("") };
 }
 
 #[ignore]
@@ -28,12 +28,12 @@ fn test_naked_should_panic() {
 #[naked]
 //~^ ERROR [E0736]
 fn test_naked_ignore() {
-    unsafe { asm!("", options(noreturn)) };
+    unsafe { naked_asm!("") };
 }
 
 #[bench]
 #[naked]
 //~^ ERROR [E0736]
 fn bench_naked() {
-    unsafe { asm!("", options(noreturn)) };
+    unsafe { naked_asm!("") };
 }
diff --git a/tests/ui/asm/naked-functions-unused.aarch64.stderr b/tests/ui/asm/naked-functions-unused.aarch64.stderr
index 8d3c300e058..ea63ced1aab 100644
--- a/tests/ui/asm/naked-functions-unused.aarch64.stderr
+++ b/tests/ui/asm/naked-functions-unused.aarch64.stderr
@@ -18,49 +18,49 @@ LL |     pub extern "C" fn function(a: usize, b: usize) -> usize {
    |                                          ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:26:38
+  --> $DIR/naked-functions-unused.rs:28:38
    |
 LL |         pub extern "C" fn associated(a: usize, b: usize) -> usize {
    |                                      ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:26:48
+  --> $DIR/naked-functions-unused.rs:28:48
    |
 LL |         pub extern "C" fn associated(a: usize, b: usize) -> usize {
    |                                                ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:32:41
+  --> $DIR/naked-functions-unused.rs:36:41
    |
 LL |         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:32:51
+  --> $DIR/naked-functions-unused.rs:36:51
    |
 LL |         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
    |                                                   ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:40:40
+  --> $DIR/naked-functions-unused.rs:46:40
    |
 LL |         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
    |                                        ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:40:50
+  --> $DIR/naked-functions-unused.rs:46:50
    |
 LL |         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:46:43
+  --> $DIR/naked-functions-unused.rs:54:43
    |
 LL |         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
    |                                           ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:46:53
+  --> $DIR/naked-functions-unused.rs:54:53
    |
 LL |         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
    |                                                     ^ help: if this is intentional, prefix it with an underscore: `_b`
diff --git a/tests/ui/asm/naked-functions-unused.rs b/tests/ui/asm/naked-functions-unused.rs
index 745d30e6a84..c27037819a4 100644
--- a/tests/ui/asm/naked-functions-unused.rs
+++ b/tests/ui/asm/naked-functions-unused.rs
@@ -17,7 +17,9 @@ pub mod normal {
     pub extern "C" fn function(a: usize, b: usize) -> usize {
         //~^ ERROR unused variable: `a`
         //~| ERROR unused variable: `b`
-        unsafe { asm!("", options(noreturn)); }
+        unsafe {
+            asm!("", options(noreturn));
+        }
     }
 
     pub struct Normal;
@@ -26,13 +28,17 @@ pub mod normal {
         pub extern "C" fn associated(a: usize, b: usize) -> usize {
             //~^ ERROR unused variable: `a`
             //~| ERROR unused variable: `b`
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                asm!("", options(noreturn));
+            }
         }
 
         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
             //~^ ERROR unused variable: `a`
             //~| ERROR unused variable: `b`
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                asm!("", options(noreturn));
+            }
         }
     }
 
@@ -40,23 +46,29 @@ pub mod normal {
         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
             //~^ ERROR unused variable: `a`
             //~| ERROR unused variable: `b`
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                asm!("", options(noreturn));
+            }
         }
 
         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
             //~^ ERROR unused variable: `a`
             //~| ERROR unused variable: `b`
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                asm!("", options(noreturn));
+            }
         }
     }
 }
 
 pub mod naked {
-    use std::arch::asm;
+    use std::arch::naked_asm;
 
     #[naked]
     pub extern "C" fn function(a: usize, b: usize) -> usize {
-        unsafe { asm!("", options(noreturn)); }
+        unsafe {
+            naked_asm!("");
+        }
     }
 
     pub struct Naked;
@@ -64,24 +76,32 @@ pub mod naked {
     impl Naked {
         #[naked]
         pub extern "C" fn associated(a: usize, b: usize) -> usize {
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                naked_asm!("");
+            }
         }
 
         #[naked]
         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                naked_asm!("");
+            }
         }
     }
 
     impl super::Trait for Naked {
         #[naked]
         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                naked_asm!("");
+            }
         }
 
         #[naked]
         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
-            unsafe { asm!("", options(noreturn)); }
+            unsafe {
+                naked_asm!("");
+            }
         }
     }
 }
diff --git a/tests/ui/asm/naked-functions-unused.x86_64.stderr b/tests/ui/asm/naked-functions-unused.x86_64.stderr
index 8d3c300e058..ea63ced1aab 100644
--- a/tests/ui/asm/naked-functions-unused.x86_64.stderr
+++ b/tests/ui/asm/naked-functions-unused.x86_64.stderr
@@ -18,49 +18,49 @@ LL |     pub extern "C" fn function(a: usize, b: usize) -> usize {
    |                                          ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:26:38
+  --> $DIR/naked-functions-unused.rs:28:38
    |
 LL |         pub extern "C" fn associated(a: usize, b: usize) -> usize {
    |                                      ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:26:48
+  --> $DIR/naked-functions-unused.rs:28:48
    |
 LL |         pub extern "C" fn associated(a: usize, b: usize) -> usize {
    |                                                ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:32:41
+  --> $DIR/naked-functions-unused.rs:36:41
    |
 LL |         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:32:51
+  --> $DIR/naked-functions-unused.rs:36:51
    |
 LL |         pub extern "C" fn method(&self, a: usize, b: usize) -> usize {
    |                                                   ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:40:40
+  --> $DIR/naked-functions-unused.rs:46:40
    |
 LL |         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
    |                                        ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:40:50
+  --> $DIR/naked-functions-unused.rs:46:50
    |
 LL |         extern "C" fn trait_associated(a: usize, b: usize) -> usize {
    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
 
 error: unused variable: `a`
-  --> $DIR/naked-functions-unused.rs:46:43
+  --> $DIR/naked-functions-unused.rs:54:43
    |
 LL |         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
    |                                           ^ help: if this is intentional, prefix it with an underscore: `_a`
 
 error: unused variable: `b`
-  --> $DIR/naked-functions-unused.rs:46:53
+  --> $DIR/naked-functions-unused.rs:54:53
    |
 LL |         extern "C" fn trait_method(&self, a: usize, b: usize) -> usize {
    |                                                     ^ help: if this is intentional, prefix it with an underscore: `_b`
diff --git a/tests/ui/asm/naked-functions.rs b/tests/ui/asm/naked-functions.rs
index 116a84506c5..5c58f1498cc 100644
--- a/tests/ui/asm/naked-functions.rs
+++ b/tests/ui/asm/naked-functions.rs
@@ -6,7 +6,13 @@
 #![feature(asm_unwind, linkage)]
 #![crate_type = "lib"]
 
-use std::arch::asm;
+use std::arch::{asm, naked_asm};
+
+#[naked]
+pub unsafe extern "C" fn inline_asm_macro() {
+    asm!("", options(raw));
+    //~^ERROR the `asm!` macro is not allowed in naked functions
+}
 
 #[repr(C)]
 pub struct P {
@@ -25,12 +31,12 @@ pub unsafe extern "C" fn patterns(
     P { x, y }: P,
     //~^ ERROR patterns not allowed in naked function parameters
 ) {
-    asm!("", options(noreturn))
+    naked_asm!("")
 }
 
 #[naked]
 pub unsafe extern "C" fn inc(a: u32) -> u32 {
-    //~^ ERROR naked functions must contain a single asm block
+    //~^ ERROR naked functions must contain a single `naked_asm!` invocation
     a + 1
     //~^ ERROR referencing function parameters is not allowed in naked functions
 }
@@ -38,20 +44,19 @@ pub unsafe extern "C" fn inc(a: u32) -> u32 {
 #[naked]
 #[allow(asm_sub_register)]
 pub unsafe extern "C" fn inc_asm(a: u32) -> u32 {
-    asm!("/* {0} */", in(reg) a, options(noreturn));
-    //~^ ERROR referencing function parameters is not allowed in naked functions
-    //~| ERROR only `const` and `sym` operands are supported in naked functions
+    naked_asm!("/* {0} */", in(reg) a)
+    //~^ ERROR the `in` operand cannot be used with `naked_asm!`
 }
 
 #[naked]
 pub unsafe extern "C" fn inc_closure(a: u32) -> u32 {
-    //~^ ERROR naked functions must contain a single asm block
+    //~^ ERROR naked functions must contain a single `naked_asm!` invocation
     (|| a + 1)()
 }
 
 #[naked]
 pub unsafe extern "C" fn unsupported_operands() {
-    //~^ ERROR naked functions must contain a single asm block
+    //~^ ERROR naked functions must contain a single `naked_asm!` invocation
     let mut a = 0usize;
     let mut b = 0usize;
     let mut c = 0usize;
@@ -59,10 +64,9 @@ pub unsafe extern "C" fn unsupported_operands() {
     let mut e = 0usize;
     const F: usize = 0usize;
     static G: usize = 0usize;
-    asm!("/* {0} {1} {2} {3} {4} {5} {6} */",
-         //~^ ERROR asm in naked functions must use `noreturn` option
+    naked_asm!("/* {0} {1} {2} {3} {4} {5} {6} */",
          in(reg) a,
-         //~^ ERROR only `const` and `sym` operands are supported in naked functions
+         //~^ ERROR the `in` operand cannot be used with `naked_asm!`
          inlateout(reg) b,
          inout(reg) c,
          lateout(reg) d,
@@ -74,27 +78,23 @@ pub unsafe extern "C" fn unsupported_operands() {
 
 #[naked]
 pub extern "C" fn missing_assembly() {
-    //~^ ERROR naked functions must contain a single asm block
+    //~^ ERROR naked functions must contain a single `naked_asm!` invocation
 }
 
 #[naked]
 pub extern "C" fn too_many_asm_blocks() {
-    //~^ ERROR naked functions must contain a single asm block
+    //~^ ERROR naked functions must contain a single `naked_asm!` invocation
     unsafe {
-        asm!("");
-        //~^ ERROR asm in naked functions must use `noreturn` option
-        asm!("");
-        //~^ ERROR asm in naked functions must use `noreturn` option
-        asm!("");
-        //~^ ERROR asm in naked functions must use `noreturn` option
-        asm!("", options(noreturn));
+        naked_asm!("", options(noreturn));
+        //~^ ERROR the `noreturn` option cannot be used with `naked_asm!`
+        naked_asm!("");
     }
 }
 
 pub fn outer(x: u32) -> extern "C" fn(usize) -> usize {
     #[naked]
     pub extern "C" fn inner(y: usize) -> usize {
-        //~^ ERROR naked functions must contain a single asm block
+        //~^ ERROR naked functions must contain a single `naked_asm!` invocation
         *&y
         //~^ ERROR referencing function parameters is not allowed in naked functions
     }
@@ -103,40 +103,41 @@ pub fn outer(x: u32) -> extern "C" fn(usize) -> usize {
 
 #[naked]
 unsafe extern "C" fn invalid_options() {
-    asm!("", options(nomem, preserves_flags, noreturn));
-    //~^ ERROR asm options unsupported in naked functions: `nomem`, `preserves_flags`
+    naked_asm!("", options(nomem, preserves_flags));
+    //~^ ERROR the `nomem` option cannot be used with `naked_asm!`
+    //~| ERROR the `preserves_flags` option cannot be used with `naked_asm!`
 }
 
 #[naked]
 unsafe extern "C" fn invalid_options_continued() {
-    asm!("", options(readonly, nostack), options(pure));
-    //~^ ERROR asm with the `pure` option must have at least one output
-    //~| ERROR asm options unsupported in naked functions: `pure`, `readonly`, `nostack`
-    //~| ERROR asm in naked functions must use `noreturn` option
+    naked_asm!("", options(readonly, nostack), options(pure));
+    //~^ ERROR the `readonly` option cannot be used with `naked_asm!`
+    //~| ERROR the `nostack` option cannot be used with `naked_asm!`
+    //~| ERROR the `pure` option cannot be used with `naked_asm!`
 }
 
 #[naked]
 unsafe extern "C" fn invalid_may_unwind() {
-    asm!("", options(noreturn, may_unwind));
-    //~^ ERROR asm options unsupported in naked functions: `may_unwind`
+    naked_asm!("", options(may_unwind));
+    //~^ ERROR the `may_unwind` option cannot be used with `naked_asm!`
 }
 
 #[naked]
 pub unsafe fn default_abi() {
     //~^ WARN Rust ABI is unsupported in naked functions
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
 
 #[naked]
 pub unsafe fn rust_abi() {
     //~^ WARN Rust ABI is unsupported in naked functions
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
 
 #[naked]
 pub extern "C" fn valid_a<T>() -> T {
     unsafe {
-        asm!("", options(noreturn));
+        naked_asm!("");
     }
 }
 
@@ -145,7 +146,7 @@ pub extern "C" fn valid_b() {
     unsafe {
         {
             {
-                asm!("", options(noreturn));
+                naked_asm!("");
             };
         };
     }
@@ -153,13 +154,13 @@ pub extern "C" fn valid_b() {
 
 #[naked]
 pub unsafe extern "C" fn valid_c() {
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
 
 #[cfg(target_arch = "x86_64")]
 #[naked]
 pub unsafe extern "C" fn valid_att_syntax() {
-    asm!("", options(noreturn, att_syntax));
+    naked_asm!("", options(att_syntax));
 }
 
 #[naked]
@@ -173,12 +174,12 @@ pub unsafe extern "C" fn allow_compile_error(a: u32) -> u32 {
 pub unsafe extern "C" fn allow_compile_error_and_asm(a: u32) -> u32 {
     compile_error!("this is a user specified error");
     //~^ ERROR this is a user specified error
-    asm!("", options(noreturn))
+    naked_asm!("")
 }
 
 #[naked]
 pub unsafe extern "C" fn invalid_asm_syntax(a: u32) -> u32 {
-    asm!(invalid_syntax)
+    naked_asm!(invalid_syntax)
     //~^ ERROR asm template must be a string literal
 }
 
@@ -186,7 +187,7 @@ pub unsafe extern "C" fn invalid_asm_syntax(a: u32) -> u32 {
 #[cfg_attr(target_pointer_width = "64", no_mangle)]
 #[naked]
 pub unsafe extern "C" fn compatible_cfg_attributes() {
-    asm!("", options(noreturn, att_syntax));
+    naked_asm!("", options(att_syntax));
 }
 
 #[allow(dead_code)]
@@ -195,25 +196,24 @@ pub unsafe extern "C" fn compatible_cfg_attributes() {
 #[forbid(dead_code)]
 #[naked]
 pub unsafe extern "C" fn compatible_diagnostic_attributes() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
 
 #[deprecated = "test"]
 #[naked]
 pub unsafe extern "C" fn compatible_deprecated_attributes() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
 
 #[cfg(target_arch = "x86_64")]
 #[must_use]
 #[naked]
 pub unsafe extern "C" fn compatible_must_use_attributes() -> u64 {
-    asm!(
+    naked_asm!(
         "
         mov rax, 42
         ret
         ",
-        options(noreturn)
     )
 }
 
@@ -222,20 +222,20 @@ pub unsafe extern "C" fn compatible_must_use_attributes() -> u64 {
 #[no_mangle]
 #[naked]
 pub unsafe extern "C" fn compatible_ffi_attributes_1() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
 
 #[cold]
 #[naked]
 pub unsafe extern "C" fn compatible_codegen_attributes() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
 
 #[cfg(target_arch = "x86_64")]
 #[target_feature(enable = "sse2")]
 #[naked]
 pub unsafe extern "C" fn compatible_target_feature() {
-    asm!("", options(noreturn));
+    naked_asm!("");
 }
 
 #[doc = "foo bar baz"]
@@ -244,11 +244,11 @@ pub unsafe extern "C" fn compatible_target_feature() {
 #[doc(alias = "ADocAlias")]
 #[naked]
 pub unsafe extern "C" fn compatible_doc_attributes() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
 
 #[linkage = "external"]
 #[naked]
 pub unsafe extern "C" fn compatible_linkage() {
-    asm!("", options(noreturn, raw));
+    naked_asm!("", options(raw));
 }
diff --git a/tests/ui/asm/naked-functions.stderr b/tests/ui/asm/naked-functions.stderr
index 93c02e2fbef..0898f3620f2 100644
--- a/tests/ui/asm/naked-functions.stderr
+++ b/tests/ui/asm/naked-functions.stderr
@@ -1,193 +1,162 @@
-error: asm with the `pure` option must have at least one output
-  --> $DIR/naked-functions.rs:112:14
+error: the `in` operand cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:47:29
    |
-LL |     asm!("", options(readonly, nostack), options(pure));
-   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^
+LL |     naked_asm!("/* {0} */", in(reg) a)
+   |                             ^^ the `in` operand is not meaningful for global-scoped inline assembly, remove it
+
+error: the `in` operand cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:68:10
+   |
+LL |          in(reg) a,
+   |          ^^ the `in` operand is not meaningful for global-scoped inline assembly, remove it
+
+error: the `noreturn` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:88:32
+   |
+LL |         naked_asm!("", options(noreturn));
+   |                                ^^^^^^^^ the `noreturn` option is not meaningful for global-scoped inline assembly
+
+error: the `nomem` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:106:28
+   |
+LL |     naked_asm!("", options(nomem, preserves_flags));
+   |                            ^^^^^ the `nomem` option is not meaningful for global-scoped inline assembly
+
+error: the `preserves_flags` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:106:35
+   |
+LL |     naked_asm!("", options(nomem, preserves_flags));
+   |                                   ^^^^^^^^^^^^^^^ the `preserves_flags` option is not meaningful for global-scoped inline assembly
+
+error: the `readonly` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:113:28
+   |
+LL |     naked_asm!("", options(readonly, nostack), options(pure));
+   |                            ^^^^^^^^ the `readonly` option is not meaningful for global-scoped inline assembly
+
+error: the `nostack` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:113:38
+   |
+LL |     naked_asm!("", options(readonly, nostack), options(pure));
+   |                                      ^^^^^^^ the `nostack` option is not meaningful for global-scoped inline assembly
+
+error: the `pure` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:113:56
+   |
+LL |     naked_asm!("", options(readonly, nostack), options(pure));
+   |                                                        ^^^^ the `pure` option is not meaningful for global-scoped inline assembly
+
+error: the `may_unwind` option cannot be used with `naked_asm!`
+  --> $DIR/naked-functions.rs:121:28
+   |
+LL |     naked_asm!("", options(may_unwind));
+   |                            ^^^^^^^^^^ the `may_unwind` option is not meaningful for global-scoped inline assembly
 
 error: this is a user specified error
-  --> $DIR/naked-functions.rs:168:5
+  --> $DIR/naked-functions.rs:169:5
    |
 LL |     compile_error!("this is a user specified error")
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this is a user specified error
-  --> $DIR/naked-functions.rs:174:5
+  --> $DIR/naked-functions.rs:175:5
    |
 LL |     compile_error!("this is a user specified error");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: asm template must be a string literal
-  --> $DIR/naked-functions.rs:181:10
+  --> $DIR/naked-functions.rs:182:16
    |
-LL |     asm!(invalid_syntax)
-   |          ^^^^^^^^^^^^^^
+LL |     naked_asm!(invalid_syntax)
+   |                ^^^^^^^^^^^^^^
+
+error[E0787]: the `asm!` macro is not allowed in naked functions
+  --> $DIR/naked-functions.rs:13:5
+   |
+LL |     asm!("", options(raw));
+   |     ^^^^^^^^^^^^^^^^^^^^^^ consider using the `naked_asm!` macro instead
 
 error: patterns not allowed in naked function parameters
-  --> $DIR/naked-functions.rs:19:5
+  --> $DIR/naked-functions.rs:25:5
    |
 LL |     mut a: u32,
    |     ^^^^^
 
 error: patterns not allowed in naked function parameters
-  --> $DIR/naked-functions.rs:21:5
+  --> $DIR/naked-functions.rs:27:5
    |
 LL |     &b: &i32,
    |     ^^
 
 error: patterns not allowed in naked function parameters
-  --> $DIR/naked-functions.rs:23:6
+  --> $DIR/naked-functions.rs:29:6
    |
 LL |     (None | Some(_)): Option<std::ptr::NonNull<u8>>,
    |      ^^^^^^^^^^^^^^
 
 error: patterns not allowed in naked function parameters
-  --> $DIR/naked-functions.rs:25:5
+  --> $DIR/naked-functions.rs:31:5
    |
 LL |     P { x, y }: P,
    |     ^^^^^^^^^^
 
 error: referencing function parameters is not allowed in naked functions
-  --> $DIR/naked-functions.rs:34:5
+  --> $DIR/naked-functions.rs:40:5
    |
 LL |     a + 1
    |     ^
    |
    = help: follow the calling convention in asm block to use parameters
 
-error[E0787]: naked functions must contain a single asm block
-  --> $DIR/naked-functions.rs:32:1
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
+  --> $DIR/naked-functions.rs:38:1
    |
 LL | pub unsafe extern "C" fn inc(a: u32) -> u32 {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |
 LL |     a + 1
-   |     ----- non-asm is unsupported in naked functions
-
-error: referencing function parameters is not allowed in naked functions
-  --> $DIR/naked-functions.rs:41:31
-   |
-LL |     asm!("/* {0} */", in(reg) a, options(noreturn));
-   |                               ^
-   |
-   = help: follow the calling convention in asm block to use parameters
-
-error[E0787]: only `const` and `sym` operands are supported in naked functions
-  --> $DIR/naked-functions.rs:41:23
-   |
-LL |     asm!("/* {0} */", in(reg) a, options(noreturn));
-   |                       ^^^^^^^^^
+   |     ----- not allowed in naked functions
 
-error[E0787]: naked functions must contain a single asm block
-  --> $DIR/naked-functions.rs:47:1
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
+  --> $DIR/naked-functions.rs:52:1
    |
 LL | pub unsafe extern "C" fn inc_closure(a: u32) -> u32 {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |
 LL |     (|| a + 1)()
-   |     ------------ non-asm is unsupported in naked functions
+   |     ------------ not allowed in naked functions
 
-error[E0787]: only `const` and `sym` operands are supported in naked functions
-  --> $DIR/naked-functions.rs:64:10
-   |
-LL |          in(reg) a,
-   |          ^^^^^^^^^
-LL |
-LL |          inlateout(reg) b,
-   |          ^^^^^^^^^^^^^^^^
-LL |          inout(reg) c,
-   |          ^^^^^^^^^^^^
-LL |          lateout(reg) d,
-   |          ^^^^^^^^^^^^^^
-LL |          out(reg) e,
-   |          ^^^^^^^^^^
-
-error[E0787]: asm in naked functions must use `noreturn` option
-  --> $DIR/naked-functions.rs:62:5
-   |
-LL | /     asm!("/* {0} {1} {2} {3} {4} {5} {6} */",
-LL | |
-LL | |          in(reg) a,
-LL | |
-...  |
-LL | |          sym G,
-LL | |     );
-   | |_____^
-   |
-help: consider specifying that the asm block is responsible for returning from the function
-   |
-LL |          sym G, options(noreturn),
-   |               +++++++++++++++++++
-
-error[E0787]: naked functions must contain a single asm block
-  --> $DIR/naked-functions.rs:53:1
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
+  --> $DIR/naked-functions.rs:58:1
    |
 LL | pub unsafe extern "C" fn unsupported_operands() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |
 LL |     let mut a = 0usize;
-   |     ------------------- non-asm is unsupported in naked functions
+   |     ------------------- not allowed in naked functions
 LL |     let mut b = 0usize;
-   |     ------------------- non-asm is unsupported in naked functions
+   |     ------------------- not allowed in naked functions
 LL |     let mut c = 0usize;
-   |     ------------------- non-asm is unsupported in naked functions
+   |     ------------------- not allowed in naked functions
 LL |     let mut d = 0usize;
-   |     ------------------- non-asm is unsupported in naked functions
+   |     ------------------- not allowed in naked functions
 LL |     let mut e = 0usize;
-   |     ------------------- non-asm is unsupported in naked functions
+   |     ------------------- not allowed in naked functions
 
-error[E0787]: naked functions must contain a single asm block
-  --> $DIR/naked-functions.rs:76:1
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
+  --> $DIR/naked-functions.rs:80:1
    |
 LL | pub extern "C" fn missing_assembly() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error[E0787]: asm in naked functions must use `noreturn` option
-  --> $DIR/naked-functions.rs:84:9
-   |
-LL |         asm!("");
-   |         ^^^^^^^^
-   |
-help: consider specifying that the asm block is responsible for returning from the function
-   |
-LL |         asm!("", options(noreturn));
-   |                +++++++++++++++++++
-
-error[E0787]: asm in naked functions must use `noreturn` option
-  --> $DIR/naked-functions.rs:86:9
-   |
-LL |         asm!("");
-   |         ^^^^^^^^
-   |
-help: consider specifying that the asm block is responsible for returning from the function
-   |
-LL |         asm!("", options(noreturn));
-   |                +++++++++++++++++++
-
-error[E0787]: asm in naked functions must use `noreturn` option
-  --> $DIR/naked-functions.rs:88:9
-   |
-LL |         asm!("");
-   |         ^^^^^^^^
-   |
-help: consider specifying that the asm block is responsible for returning from the function
-   |
-LL |         asm!("", options(noreturn));
-   |                +++++++++++++++++++
-
-error[E0787]: naked functions must contain a single asm block
-  --> $DIR/naked-functions.rs:81:1
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
+  --> $DIR/naked-functions.rs:85:1
    |
 LL | pub extern "C" fn too_many_asm_blocks() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 ...
-LL |         asm!("");
-   |         -------- multiple asm blocks are unsupported in naked functions
-LL |
-LL |         asm!("");
-   |         -------- multiple asm blocks are unsupported in naked functions
-LL |
-LL |         asm!("", options(noreturn));
-   |         --------------------------- multiple asm blocks are unsupported in naked functions
+LL |         naked_asm!("");
+   |         -------------- multiple `naked_asm!` invocations are not allowed in naked functions
 
 error: referencing function parameters is not allowed in naked functions
   --> $DIR/naked-functions.rs:98:11
@@ -197,46 +166,17 @@ LL |         *&y
    |
    = help: follow the calling convention in asm block to use parameters
 
-error[E0787]: naked functions must contain a single asm block
+error[E0787]: naked functions must contain a single `naked_asm!` invocation
   --> $DIR/naked-functions.rs:96:5
    |
 LL |     pub extern "C" fn inner(y: usize) -> usize {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |
 LL |         *&y
-   |         --- non-asm is unsupported in naked functions
-
-error[E0787]: asm options unsupported in naked functions: `nomem`, `preserves_flags`
-  --> $DIR/naked-functions.rs:106:5
-   |
-LL |     asm!("", options(nomem, preserves_flags, noreturn));
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error[E0787]: asm options unsupported in naked functions: `pure`, `readonly`, `nostack`
-  --> $DIR/naked-functions.rs:112:5
-   |
-LL |     asm!("", options(readonly, nostack), options(pure));
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error[E0787]: asm in naked functions must use `noreturn` option
-  --> $DIR/naked-functions.rs:112:5
-   |
-LL |     asm!("", options(readonly, nostack), options(pure));
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-help: consider specifying that the asm block is responsible for returning from the function
-   |
-LL |     asm!("", options(noreturn), options(readonly, nostack), options(pure));
-   |            +++++++++++++++++++
-
-error[E0787]: asm options unsupported in naked functions: `may_unwind`
-  --> $DIR/naked-functions.rs:120:5
-   |
-LL |     asm!("", options(noreturn, may_unwind));
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |         --- not allowed in naked functions
 
 warning: Rust ABI is unsupported in naked functions
-  --> $DIR/naked-functions.rs:125:1
+  --> $DIR/naked-functions.rs:126:1
    |
 LL | pub unsafe fn default_abi() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -244,11 +184,11 @@ LL | pub unsafe fn default_abi() {
    = note: `#[warn(undefined_naked_function_abi)]` on by default
 
 warning: Rust ABI is unsupported in naked functions
-  --> $DIR/naked-functions.rs:131:1
+  --> $DIR/naked-functions.rs:132:1
    |
 LL | pub unsafe fn rust_abi() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 27 previous errors; 2 warnings emitted
+error: aborting due to 25 previous errors; 2 warnings emitted
 
 For more information about this error, try `rustc --explain E0787`.
diff --git a/tests/ui/asm/naked-invalid-attr.rs b/tests/ui/asm/naked-invalid-attr.rs
index 57edd57de99..4053c58fb51 100644
--- a/tests/ui/asm/naked-invalid-attr.rs
+++ b/tests/ui/asm/naked-invalid-attr.rs
@@ -4,7 +4,7 @@
 #![feature(naked_functions)]
 #![naked] //~ ERROR should be applied to a function definition
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 extern "C" {
     #[naked] //~ ERROR should be applied to a function definition
@@ -26,27 +26,28 @@ trait Invoke {
 impl Invoke for S {
     #[naked]
     extern "C" fn invoke(&self) {
-        unsafe { asm!("", options(noreturn)) }
+        unsafe { naked_asm!("") }
     }
 }
 
 #[naked]
 extern "C" fn ok() {
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
 
 impl S {
     #[naked]
     extern "C" fn g() {
-        unsafe { asm!("", options(noreturn)) }
+        unsafe { naked_asm!("") }
     }
 
     #[naked]
     extern "C" fn h(&self) {
-        unsafe { asm!("", options(noreturn)) }
+        unsafe { naked_asm!("") }
     }
 }
 
 fn main() {
-    #[naked] || {}; //~ ERROR should be applied to a function definition
+    #[naked] //~ ERROR should be applied to a function definition
+    || {};
 }
diff --git a/tests/ui/asm/naked-invalid-attr.stderr b/tests/ui/asm/naked-invalid-attr.stderr
index e8ddccc854a..640f9d9510d 100644
--- a/tests/ui/asm/naked-invalid-attr.stderr
+++ b/tests/ui/asm/naked-invalid-attr.stderr
@@ -13,8 +13,10 @@ LL | | }
 error: attribute should be applied to a function definition
   --> $DIR/naked-invalid-attr.rs:51:5
    |
-LL |     #[naked] || {};
-   |     ^^^^^^^^ ----- not a function definition
+LL |     #[naked]
+   |     ^^^^^^^^
+LL |     || {};
+   |     ----- not a function definition
 
 error: attribute should be applied to a function definition
   --> $DIR/naked-invalid-attr.rs:22:5
diff --git a/tests/ui/asm/naked-with-invalid-repr-attr.rs b/tests/ui/asm/naked-with-invalid-repr-attr.rs
index 687fe1ad73d..18b9c1014c3 100644
--- a/tests/ui/asm/naked-with-invalid-repr-attr.rs
+++ b/tests/ui/asm/naked-with-invalid-repr-attr.rs
@@ -2,14 +2,14 @@
 #![feature(naked_functions)]
 #![feature(fn_align)]
 #![crate_type = "lib"]
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[repr(C)]
 //~^ ERROR attribute should be applied to a struct, enum, or union [E0517]
 #[naked]
 extern "C" fn example1() {
     //~^ NOTE not a struct, enum, or union
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
 
 #[repr(transparent)]
@@ -17,7 +17,7 @@ extern "C" fn example1() {
 #[naked]
 extern "C" fn example2() {
     //~^ NOTE not a struct, enum, or union
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
 
 #[repr(align(16), C)]
@@ -25,7 +25,7 @@ extern "C" fn example2() {
 #[naked]
 extern "C" fn example3() {
     //~^ NOTE not a struct, enum, or union
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
 
 // note: two errors because of packed and C
@@ -36,7 +36,7 @@ extern "C" fn example3() {
 extern "C" fn example4() {
     //~^ NOTE not a struct, enum, or union
     //~| NOTE not a struct or union
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
 
 #[repr(u8)]
@@ -44,5 +44,5 @@ extern "C" fn example4() {
 #[naked]
 extern "C" fn example5() {
     //~^ NOTE not an enum
-    unsafe { asm!("", options(noreturn)) }
+    unsafe { naked_asm!("") }
 }
diff --git a/tests/ui/asm/naked-with-invalid-repr-attr.stderr b/tests/ui/asm/naked-with-invalid-repr-attr.stderr
index 3740f17a9dc..8248a8c1657 100644
--- a/tests/ui/asm/naked-with-invalid-repr-attr.stderr
+++ b/tests/ui/asm/naked-with-invalid-repr-attr.stderr
@@ -6,7 +6,7 @@ LL |   #[repr(C)]
 ...
 LL | / extern "C" fn example1() {
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not a struct, enum, or union
 
@@ -18,7 +18,7 @@ LL |   #[repr(transparent)]
 ...
 LL | / extern "C" fn example2() {
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not a struct, enum, or union
 
@@ -30,7 +30,7 @@ LL |   #[repr(align(16), C)]
 ...
 LL | / extern "C" fn example3() {
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not a struct, enum, or union
 
@@ -43,7 +43,7 @@ LL |   #[repr(C, packed)]
 LL | / extern "C" fn example4() {
 LL | |
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not a struct, enum, or union
 
@@ -56,7 +56,7 @@ LL |   #[repr(C, packed)]
 LL | / extern "C" fn example4() {
 LL | |
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not a struct or union
 
@@ -68,7 +68,7 @@ LL |   #[repr(u8)]
 ...
 LL | / extern "C" fn example5() {
 LL | |
-LL | |     unsafe { asm!("", options(noreturn)) }
+LL | |     unsafe { naked_asm!("") }
 LL | | }
    | |_- not an enum
 
diff --git a/tests/ui/asm/named-asm-labels.rs b/tests/ui/asm/named-asm-labels.rs
index 043aab9029d..77831e679ed 100644
--- a/tests/ui/asm/named-asm-labels.rs
+++ b/tests/ui/asm/named-asm-labels.rs
@@ -12,7 +12,7 @@
 
 #![feature(naked_functions)]
 
-use std::arch::{asm, global_asm};
+use std::arch::{asm, global_asm, naked_asm};
 
 #[no_mangle]
 pub static FOO: usize = 42;
@@ -177,7 +177,7 @@ fn main() {
 // label or LTO can cause labels to break
 #[naked]
 pub extern "C" fn foo() -> i32 {
-    unsafe { asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1, options(noreturn)) }
+    unsafe { naked_asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1) }
     //~^ ERROR avoid using named labels
 }
 
@@ -192,7 +192,7 @@ pub extern "C" fn bar() {
 pub extern "C" fn aaa() {
     fn _local() {}
 
-    unsafe { asm!(".Laaa: nop; ret;", options(noreturn)) } //~ ERROR avoid using named labels
+    unsafe { naked_asm!(".Laaa: nop; ret;") } //~ ERROR avoid using named labels
 }
 
 pub fn normal() {
@@ -202,7 +202,7 @@ pub fn normal() {
     pub extern "C" fn bbb() {
         fn _very_local() {}
 
-        unsafe { asm!(".Lbbb: nop; ret;", options(noreturn)) } //~ ERROR avoid using named labels
+        unsafe { naked_asm!(".Lbbb: nop; ret;") } //~ ERROR avoid using named labels
     }
 
     fn _local2() {}
@@ -221,7 +221,7 @@ fn closures() {
     || {
         #[naked]
         unsafe extern "C" fn _nested() {
-            asm!("ret;", options(noreturn));
+            naked_asm!("ret;");
         }
 
         unsafe {
diff --git a/tests/ui/asm/named-asm-labels.stderr b/tests/ui/asm/named-asm-labels.stderr
index e5e177fb8b8..44ce358c62b 100644
--- a/tests/ui/asm/named-asm-labels.stderr
+++ b/tests/ui/asm/named-asm-labels.stderr
@@ -475,10 +475,10 @@ LL |         #[warn(named_asm_labels)]
    |                ^^^^^^^^^^^^^^^^
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:180:20
+  --> $DIR/named-asm-labels.rs:180:26
    |
-LL |     unsafe { asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1, options(noreturn)) }
-   |                    ^^^^^
+LL |     unsafe { naked_asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1) }
+   |                          ^^^^^
    |
    = help: only local labels of the form `<number>:` should be used in inline asm
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
@@ -493,19 +493,19 @@ LL |     unsafe { asm!(".Lbar: mov rax, {}; ret;", "nop", const 1, options(noret
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:195:20
+  --> $DIR/named-asm-labels.rs:195:26
    |
-LL |     unsafe { asm!(".Laaa: nop; ret;", options(noreturn)) }
-   |                    ^^^^^
+LL |     unsafe { naked_asm!(".Laaa: nop; ret;") }
+   |                          ^^^^^
    |
    = help: only local labels of the form `<number>:` should be used in inline asm
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:205:24
+  --> $DIR/named-asm-labels.rs:205:30
    |
-LL |         unsafe { asm!(".Lbbb: nop; ret;", options(noreturn)) }
-   |                        ^^^^^
+LL |         unsafe { naked_asm!(".Lbbb: nop; ret;") }
+   |                              ^^^^^
    |
    = help: only local labels of the form `<number>:` should be used in inline asm
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
diff --git a/tests/ui/feature-gates/feature-gate-naked_functions.rs b/tests/ui/feature-gates/feature-gate-naked_functions.rs
index 36980fd74c2..5fe0bbdc774 100644
--- a/tests/ui/feature-gates/feature-gate-naked_functions.rs
+++ b/tests/ui/feature-gates/feature-gate-naked_functions.rs
@@ -1,19 +1,22 @@
 //@ needs-asm-support
 
-use std::arch::asm;
+use std::arch::naked_asm;
+//~^ ERROR use of unstable library feature 'naked_functions'
 
 #[naked]
 //~^ the `#[naked]` attribute is an experimental feature
 extern "C" fn naked() {
-    asm!("", options(noreturn))
-    //~^ ERROR: requires unsafe
+    naked_asm!("")
+    //~^ ERROR use of unstable library feature 'naked_functions'
+    //~| ERROR: requires unsafe
 }
 
 #[naked]
 //~^ the `#[naked]` attribute is an experimental feature
 extern "C" fn naked_2() -> isize {
-    asm!("", options(noreturn))
-    //~^ ERROR: requires unsafe
+    naked_asm!("")
+    //~^ ERROR use of unstable library feature 'naked_functions'
+    //~| ERROR: requires unsafe
 }
 
 fn main() {}
diff --git a/tests/ui/feature-gates/feature-gate-naked_functions.stderr b/tests/ui/feature-gates/feature-gate-naked_functions.stderr
index ffdf31e147a..709234eb023 100644
--- a/tests/ui/feature-gates/feature-gate-naked_functions.stderr
+++ b/tests/ui/feature-gates/feature-gate-naked_functions.stderr
@@ -1,5 +1,25 @@
+error[E0658]: use of unstable library feature 'naked_functions'
+  --> $DIR/feature-gate-naked_functions.rs:9:5
+   |
+LL |     naked_asm!("")
+   |     ^^^^^^^^^
+   |
+   = note: see issue #90957 <https://github.com/rust-lang/rust/issues/90957> for more information
+   = help: add `#![feature(naked_functions)]` to the crate attributes to enable
+   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
+
+error[E0658]: use of unstable library feature 'naked_functions'
+  --> $DIR/feature-gate-naked_functions.rs:17:5
+   |
+LL |     naked_asm!("")
+   |     ^^^^^^^^^
+   |
+   = note: see issue #90957 <https://github.com/rust-lang/rust/issues/90957> for more information
+   = help: add `#![feature(naked_functions)]` to the crate attributes to enable
+   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
+
 error[E0658]: the `#[naked]` attribute is an experimental feature
-  --> $DIR/feature-gate-naked_functions.rs:5:1
+  --> $DIR/feature-gate-naked_functions.rs:6:1
    |
 LL | #[naked]
    | ^^^^^^^^
@@ -9,7 +29,7 @@ LL | #[naked]
    = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
 
 error[E0658]: the `#[naked]` attribute is an experimental feature
-  --> $DIR/feature-gate-naked_functions.rs:12:1
+  --> $DIR/feature-gate-naked_functions.rs:14:1
    |
 LL | #[naked]
    | ^^^^^^^^
@@ -18,23 +38,33 @@ LL | #[naked]
    = help: add `#![feature(naked_functions)]` to the crate attributes to enable
    = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
 
+error[E0658]: use of unstable library feature 'naked_functions'
+  --> $DIR/feature-gate-naked_functions.rs:3:5
+   |
+LL | use std::arch::naked_asm;
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #90957 <https://github.com/rust-lang/rust/issues/90957> for more information
+   = help: add `#![feature(naked_functions)]` to the crate attributes to enable
+   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
+
 error[E0133]: use of inline assembly is unsafe and requires unsafe function or block
-  --> $DIR/feature-gate-naked_functions.rs:8:5
+  --> $DIR/feature-gate-naked_functions.rs:9:5
    |
-LL |     asm!("", options(noreturn))
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of inline assembly
+LL |     naked_asm!("")
+   |     ^^^^^^^^^^^^^^ use of inline assembly
    |
    = note: inline assembly is entirely unchecked and can cause undefined behavior
 
 error[E0133]: use of inline assembly is unsafe and requires unsafe function or block
-  --> $DIR/feature-gate-naked_functions.rs:15:5
+  --> $DIR/feature-gate-naked_functions.rs:17:5
    |
-LL |     asm!("", options(noreturn))
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of inline assembly
+LL |     naked_asm!("")
+   |     ^^^^^^^^^^^^^^ use of inline assembly
    |
    = note: inline assembly is entirely unchecked and can cause undefined behavior
 
-error: aborting due to 4 previous errors
+error: aborting due to 7 previous errors
 
 Some errors have detailed explanations: E0133, E0658.
 For more information about an error, try `rustc --explain E0133`.
diff --git a/tests/ui/rfcs/rfc-2091-track-caller/error-with-naked.rs b/tests/ui/rfcs/rfc-2091-track-caller/error-with-naked.rs
index 0c73b9abf35..0e85515fd10 100644
--- a/tests/ui/rfcs/rfc-2091-track-caller/error-with-naked.rs
+++ b/tests/ui/rfcs/rfc-2091-track-caller/error-with-naked.rs
@@ -1,14 +1,14 @@
 //@ needs-asm-support
 #![feature(naked_functions)]
 
-use std::arch::asm;
+use std::arch::naked_asm;
 
 #[track_caller] //~ ERROR [E0736]
 //~^ ERROR `#[track_caller]` requires Rust ABI
 #[naked]
 extern "C" fn f() {
     unsafe {
-        asm!("", options(noreturn));
+        naked_asm!("");
     }
 }
 
@@ -20,7 +20,7 @@ impl S {
     #[naked]
     extern "C" fn g() {
         unsafe {
-            asm!("", options(noreturn));
+            naked_asm!("");
         }
     }
 }