Add new EFIAPI ABI

Adds a new ABI for the EFIAPI calls. This ABI should reflect the latest
version of the UEFI specification at the time of commit (UEFI spec 2.8,
URL below). The specification says that for x86_64, we should follow the
win64 ABI, while on all other supported platforms (ia32, itanium, arm,
arm64 and risc-v), we should follow the C ABI.

To simplify the implementation, we will simply follow the C ABI on all
platforms except x86_64, even those technically unsupported by the UEFI
specification.

https://uefi.org/sites/default/files/resources/UEFI_Spec_2_8_final.pdf

12 files changed, 182 insertions, 72 deletions

diff --git a/src/librustc/ich/impls_syntax.rs b/src/librustc/ich/impls_syntax.rs
index dc1f6fd3131..aad3cd95506 100644
--- a/src/librustc/ich/impls_syntax.rs
+++ b/src/librustc/ich/impls_syntax.rs
@@ -80,6 +80,7 @@ impl_stable_hash_for!(enum ::rustc_target::spec::abi::Abi {
     Msp430Interrupt,
     X86Interrupt,
     AmdGpuKernel,
+    EfiApi,
     Rust,
     C,
     System,
diff --git a/src/librustc/ty/layout.rs b/src/librustc/ty/layout.rs
index aed9e87a168..e82232ac10f 100644
--- a/src/librustc/ty/layout.rs
+++ b/src/librustc/ty/layout.rs
@@ -2596,6 +2596,7 @@ where
 
             // It's the ABI's job to select this, not ours.
             System => bug!("system abi should be selected elsewhere"),
+            EfiApi => bug!("eficall abi should be selected elsewhere"),
 
             Stdcall => Conv::X86Stdcall,
             Fastcall => Conv::X86Fastcall,
diff --git a/src/librustc_target/spec/abi.rs b/src/librustc_target/spec/abi.rs
index 909f0fc53fc..3a24d30966f 100644
--- a/src/librustc_target/spec/abi.rs
+++ b/src/librustc_target/spec/abi.rs
@@ -21,6 +21,7 @@ pub enum Abi {
     Msp430Interrupt,
     X86Interrupt,
     AmdGpuKernel,
+    EfiApi,
 
     // Multiplatform / generic ABIs
     Rust,
@@ -58,6 +59,7 @@ const AbiDatas: &[AbiData] = &[
     AbiData {abi: Abi::Msp430Interrupt, name: "msp430-interrupt", generic: false },
     AbiData {abi: Abi::X86Interrupt, name: "x86-interrupt", generic: false },
     AbiData {abi: Abi::AmdGpuKernel, name: "amdgpu-kernel", generic: false },
+    AbiData {abi: Abi::EfiApi, name: "efiapi", generic: false },
 
     // Cross-platform ABIs
     AbiData {abi: Abi::Rust, name: "Rust", generic: true },
diff --git a/src/librustc_target/spec/mod.rs b/src/librustc_target/spec/mod.rs
index d91588db183..e27220cc2f8 100644
--- a/src/librustc_target/spec/mod.rs
+++ b/src/librustc_target/spec/mod.rs
@@ -905,6 +905,13 @@ impl Target {
                     abi
                 }
             },
+            Abi::EfiApi => {
+                if self.arch != "x86_64" {
+                    Abi::Win64
+                } else {
+                    Abi::C
+                }
+            },
             abi => abi
         }
     }
diff --git a/src/libsyntax/feature_gate/active.rs b/src/libsyntax/feature_gate/active.rs
index 1386eac48da..5ca2695fe35 100644
--- a/src/libsyntax/feature_gate/active.rs
+++ b/src/libsyntax/feature_gate/active.rs
@@ -531,6 +531,9 @@ declare_features! (
     /// Non-object safe trait objects safe to use but cannot be created in safe rust
     (active, object_safe_for_dispatch, "1.40.0", Some(43561), None),
 
+    /// Allows using the `efiapi` ABI.
+    (active, abi_efiapi, "1.40.0", Some(1), None),
+
     // -------------------------------------------------------------------------
     // feature-group-end: actual feature gates
     // -------------------------------------------------------------------------
diff --git a/src/libsyntax/feature_gate/check.rs b/src/libsyntax/feature_gate/check.rs
index 172511f0f09..e68675a9b8e 100644
--- a/src/libsyntax/feature_gate/check.rs
+++ b/src/libsyntax/feature_gate/check.rs
@@ -234,6 +234,10 @@ impl<'a> PostExpansionVisitor<'a> {
                 gate_feature_post!(&self, abi_amdgpu_kernel, span,
                                    "amdgpu-kernel ABI is experimental and subject to change");
             },
+            Abi::EfiApi => {
+                gate_feature_post!(&self, abi_efiapi, span,
+                                   "efiapi ABI is experimental and subject to change");
+            },
             // Stable
             Abi::Cdecl |
             Abi::Stdcall |
diff --git a/src/libsyntax_pos/symbol.rs b/src/libsyntax_pos/symbol.rs
index 377d2f877b3..8ba161f55c1 100644
--- a/src/libsyntax_pos/symbol.rs
+++ b/src/libsyntax_pos/symbol.rs
@@ -110,6 +110,7 @@ symbols! {
         aarch64_target_feature,
         abi,
         abi_amdgpu_kernel,
+        abi_efiapi,
         abi_msp430_interrupt,
         abi_ptx,
         abi_sysv64,
diff --git a/src/test/codegen/abi-efiapi.rs b/src/test/codegen/abi-efiapi.rs
new file mode 100644
index 00000000000..471f572375a
--- /dev/null
+++ b/src/test/codegen/abi-efiapi.rs
@@ -0,0 +1,20 @@
+// Checks if the correct annotation for the efiapi ABI is passed to llvm.
+
+// compile-flags: -C no-prepopulate-passes
+
+#![crate_type = "lib"]
+#![feature(abi_efiapi)]
+
+// CHECK: define win64 i64 @has_efiapi
+#[no_mangle]
+#[cfg(target_arch = "x86_64")]
+pub extern "efiapi" fn has_efiapi(a: i64) -> i64 {
+    a * 2
+}
+
+// CHECK: define c i64 @has_efiapi
+#[no_mangle]
+#[cfg(not(target_arch = "x86_64"))]
+pub extern "efiapi" fn has_efiapi(a: i64) -> i64 {
+    a * 2
+}
diff --git a/src/test/ui/codemap_tests/unicode.stderr b/src/test/ui/codemap_tests/unicode.stderr
index 1ba578b0c04..fc2a0b5950e 100644
--- a/src/test/ui/codemap_tests/unicode.stderr
+++ b/src/test/ui/codemap_tests/unicode.stderr
@@ -4,7 +4,7 @@ error[E0703]: invalid ABI: found `路濫狼á́́`
 LL | extern "路濫狼á́́" fn foo() {}
    |        ^^^^^^^^^ invalid ABI
    |
-   = help: valid ABIs: cdecl, stdcall, fastcall, vectorcall, thiscall, aapcs, win64, sysv64, ptx-kernel, msp430-interrupt, x86-interrupt, amdgpu-kernel, Rust, C, system, rust-intrinsic, rust-call, platform-intrinsic, unadjusted
+   = help: valid ABIs: cdecl, stdcall, fastcall, vectorcall, thiscall, aapcs, win64, sysv64, ptx-kernel, msp430-interrupt, x86-interrupt, amdgpu-kernel, efiapi, Rust, C, system, rust-intrinsic, rust-call, platform-intrinsic, unadjusted
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/feature-gates/feature-gate-abi.rs b/src/test/ui/feature-gates/feature-gate-abi.rs
index 61da38eea74..e89dc4d5a05 100644
--- a/src/test/ui/feature-gates/feature-gate-abi.rs
+++ b/src/test/ui/feature-gates/feature-gate-abi.rs
@@ -7,6 +7,7 @@
 // gate-test-abi_ptx
 // gate-test-abi_x86_interrupt
 // gate-test-abi_amdgpu_kernel
+// gate-test-abi_efiapi
 
 // Functions
 extern "rust-intrinsic" fn f1() {} //~ ERROR intrinsics are subject to change
@@ -20,6 +21,7 @@ extern "ptx-kernel" fn f6() {} //~ ERROR PTX ABIs are experimental and subject t
 extern "x86-interrupt" fn f7() {} //~ ERROR x86-interrupt ABI is experimental
 extern "thiscall" fn f8() {} //~ ERROR thiscall is experimental and subject to change
 extern "amdgpu-kernel" fn f9() {} //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+extern "efiapi" fn f10() {} //~ ERROR efiapi ABI is experimental and subject to change
 
 // Methods in trait definition
 trait Tr {
@@ -34,6 +36,7 @@ trait Tr {
     extern "x86-interrupt" fn m7(); //~ ERROR x86-interrupt ABI is experimental
     extern "thiscall" fn m8(); //~ ERROR thiscall is experimental and subject to change
     extern "amdgpu-kernel" fn m9(); //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+    extern "efiapi" fn m10(); //~ ERROR efiapi ABI is experimental and subject to change
 
     extern "vectorcall" fn dm3() {} //~ ERROR vectorcall is experimental and subject to change
     extern "rust-call" fn dm4() {} //~ ERROR rust-call ABI is subject to change
@@ -42,6 +45,7 @@ trait Tr {
     extern "x86-interrupt" fn dm7() {} //~ ERROR x86-interrupt ABI is experimental
     extern "thiscall" fn dm8() {} //~ ERROR thiscall is experimental and subject to change
     extern "amdgpu-kernel" fn dm9() {} //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+    extern "efiapi" fn dm10() {} //~ ERROR efiapi ABI is experimental and subject to change
 }
 
 struct S;
@@ -59,6 +63,7 @@ impl Tr for S {
     extern "x86-interrupt" fn m7() {} //~ ERROR x86-interrupt ABI is experimental
     extern "thiscall" fn m8() {} //~ ERROR thiscall is experimental and subject to change
     extern "amdgpu-kernel" fn m9() {} //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+    extern "efiapi" fn m10() {} //~ ERROR efiapi ABI is experimental and subject to change
 }
 
 // Methods in inherent impl
@@ -74,6 +79,7 @@ impl S {
     extern "x86-interrupt" fn im7() {} //~ ERROR x86-interrupt ABI is experimental
     extern "thiscall" fn im8() {} //~ ERROR thiscall is experimental and subject to change
     extern "amdgpu-kernel" fn im9() {} //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+    extern "efiapi" fn im10() {} //~ ERROR efiapi ABI is experimental and subject to change
 }
 
 // Function pointer types
@@ -86,6 +92,7 @@ type A6 = extern "ptx-kernel" fn (); //~ ERROR PTX ABIs are experimental and sub
 type A7 = extern "x86-interrupt" fn(); //~ ERROR x86-interrupt ABI is experimental
 type A8 = extern "thiscall" fn(); //~ ERROR thiscall is experimental and subject to change
 type A9 = extern "amdgpu-kernel" fn(); //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+type A10 = extern "efiapi" fn(); //~ ERROR efiapi ABI is experimental and subject to change
 
 // Foreign modules
 extern "rust-intrinsic" {} //~ ERROR intrinsics are subject to change
@@ -97,5 +104,6 @@ extern "ptx-kernel" {} //~ ERROR PTX ABIs are experimental and subject to change
 extern "x86-interrupt" {} //~ ERROR x86-interrupt ABI is experimental
 extern "thiscall" {} //~ ERROR thiscall is experimental and subject to change
 extern "amdgpu-kernel" {} //~ ERROR amdgpu-kernel ABI is experimental and subject to change
+extern "efiapi" {} //~ ERROR efiapi ABI is experimental and subject to change
 
 fn main() {}
diff --git a/src/test/ui/feature-gates/feature-gate-abi.stderr b/src/test/ui/feature-gates/feature-gate-abi.stderr
index afda76dc2b0..22b6ee4cd15 100644
--- a/src/test/ui/feature-gates/feature-gate-abi.stderr
+++ b/src/test/ui/feature-gates/feature-gate-abi.stderr
@@ -1,5 +1,5 @@
 error[E0658]: intrinsics are subject to change
-  --> $DIR/feature-gate-abi.rs:12:1
+  --> $DIR/feature-gate-abi.rs:13:1
    |
 LL | extern "rust-intrinsic" fn f1() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -7,7 +7,7 @@ LL | extern "rust-intrinsic" fn f1() {}
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:14:1
+  --> $DIR/feature-gate-abi.rs:15:1
    |
 LL | extern "platform-intrinsic" fn f2() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -16,7 +16,7 @@ LL | extern "platform-intrinsic" fn f2() {}
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:16:1
+  --> $DIR/feature-gate-abi.rs:17:1
    |
 LL | extern "vectorcall" fn f3() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -24,7 +24,7 @@ LL | extern "vectorcall" fn f3() {}
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:17:1
+  --> $DIR/feature-gate-abi.rs:18:1
    |
 LL | extern "rust-call" fn f4() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -33,7 +33,7 @@ LL | extern "rust-call" fn f4() {}
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:18:1
+  --> $DIR/feature-gate-abi.rs:19:1
    |
 LL | extern "msp430-interrupt" fn f5() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -42,7 +42,7 @@ LL | extern "msp430-interrupt" fn f5() {}
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:19:1
+  --> $DIR/feature-gate-abi.rs:20:1
    |
 LL | extern "ptx-kernel" fn f6() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -51,7 +51,7 @@ LL | extern "ptx-kernel" fn f6() {}
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:20:1
+  --> $DIR/feature-gate-abi.rs:21:1
    |
 LL | extern "x86-interrupt" fn f7() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -60,7 +60,7 @@ LL | extern "x86-interrupt" fn f7() {}
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:21:1
+  --> $DIR/feature-gate-abi.rs:22:1
    |
 LL | extern "thiscall" fn f8() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -68,7 +68,7 @@ LL | extern "thiscall" fn f8() {}
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:22:1
+  --> $DIR/feature-gate-abi.rs:23:1
    |
 LL | extern "amdgpu-kernel" fn f9() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -76,8 +76,17 @@ LL | extern "amdgpu-kernel" fn f9() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:24:1
+   |
+LL | extern "efiapi" fn f10() {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error[E0658]: intrinsics are subject to change
-  --> $DIR/feature-gate-abi.rs:26:5
+  --> $DIR/feature-gate-abi.rs:28:5
    |
 LL |     extern "rust-intrinsic" fn m1();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -85,7 +94,7 @@ LL |     extern "rust-intrinsic" fn m1();
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:28:5
+  --> $DIR/feature-gate-abi.rs:30:5
    |
 LL |     extern "platform-intrinsic" fn m2();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -94,7 +103,7 @@ LL |     extern "platform-intrinsic" fn m2();
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:30:5
+  --> $DIR/feature-gate-abi.rs:32:5
    |
 LL |     extern "vectorcall" fn m3();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -102,7 +111,7 @@ LL |     extern "vectorcall" fn m3();
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:31:5
+  --> $DIR/feature-gate-abi.rs:33:5
    |
 LL |     extern "rust-call" fn m4();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -111,7 +120,7 @@ LL |     extern "rust-call" fn m4();
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:32:5
+  --> $DIR/feature-gate-abi.rs:34:5
    |
 LL |     extern "msp430-interrupt" fn m5();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -120,7 +129,7 @@ LL |     extern "msp430-interrupt" fn m5();
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:33:5
+  --> $DIR/feature-gate-abi.rs:35:5
    |
 LL |     extern "ptx-kernel" fn m6();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -129,7 +138,7 @@ LL |     extern "ptx-kernel" fn m6();
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:34:5
+  --> $DIR/feature-gate-abi.rs:36:5
    |
 LL |     extern "x86-interrupt" fn m7();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -138,7 +147,7 @@ LL |     extern "x86-interrupt" fn m7();
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:35:5
+  --> $DIR/feature-gate-abi.rs:37:5
    |
 LL |     extern "thiscall" fn m8();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -146,7 +155,7 @@ LL |     extern "thiscall" fn m8();
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:36:5
+  --> $DIR/feature-gate-abi.rs:38:5
    |
 LL |     extern "amdgpu-kernel" fn m9();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -154,8 +163,17 @@ LL |     extern "amdgpu-kernel" fn m9();
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:39:5
+   |
+LL |     extern "efiapi" fn m10();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:38:5
+  --> $DIR/feature-gate-abi.rs:41:5
    |
 LL |     extern "vectorcall" fn dm3() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -163,7 +181,7 @@ LL |     extern "vectorcall" fn dm3() {}
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:39:5
+  --> $DIR/feature-gate-abi.rs:42:5
    |
 LL |     extern "rust-call" fn dm4() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -172,7 +190,7 @@ LL |     extern "rust-call" fn dm4() {}
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:40:5
+  --> $DIR/feature-gate-abi.rs:43:5
    |
 LL |     extern "msp430-interrupt" fn dm5() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -181,7 +199,7 @@ LL |     extern "msp430-interrupt" fn dm5() {}
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:41:5
+  --> $DIR/feature-gate-abi.rs:44:5
    |
 LL |     extern "ptx-kernel" fn dm6() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -190,7 +208,7 @@ LL |     extern "ptx-kernel" fn dm6() {}
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:42:5
+  --> $DIR/feature-gate-abi.rs:45:5
    |
 LL |     extern "x86-interrupt" fn dm7() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -199,7 +217,7 @@ LL |     extern "x86-interrupt" fn dm7() {}
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:43:5
+  --> $DIR/feature-gate-abi.rs:46:5
    |
 LL |     extern "thiscall" fn dm8() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -207,7 +225,7 @@ LL |     extern "thiscall" fn dm8() {}
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:44:5
+  --> $DIR/feature-gate-abi.rs:47:5
    |
 LL |     extern "amdgpu-kernel" fn dm9() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -215,8 +233,17 @@ LL |     extern "amdgpu-kernel" fn dm9() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:48:5
+   |
+LL |     extern "efiapi" fn dm10() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error[E0658]: intrinsics are subject to change
-  --> $DIR/feature-gate-abi.rs:51:5
+  --> $DIR/feature-gate-abi.rs:55:5
    |
 LL |     extern "rust-intrinsic" fn m1() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -224,7 +251,7 @@ LL |     extern "rust-intrinsic" fn m1() {}
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:53:5
+  --> $DIR/feature-gate-abi.rs:57:5
    |
 LL |     extern "platform-intrinsic" fn m2() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -233,7 +260,7 @@ LL |     extern "platform-intrinsic" fn m2() {}
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:55:5
+  --> $DIR/feature-gate-abi.rs:59:5
    |
 LL |     extern "vectorcall" fn m3() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -241,7 +268,7 @@ LL |     extern "vectorcall" fn m3() {}
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:56:5
+  --> $DIR/feature-gate-abi.rs:60:5
    |
 LL |     extern "rust-call" fn m4() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -250,7 +277,7 @@ LL |     extern "rust-call" fn m4() {}
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:57:5
+  --> $DIR/feature-gate-abi.rs:61:5
    |
 LL |     extern "msp430-interrupt" fn m5() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -259,7 +286,7 @@ LL |     extern "msp430-interrupt" fn m5() {}
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:58:5
+  --> $DIR/feature-gate-abi.rs:62:5
    |
 LL |     extern "ptx-kernel" fn m6() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -268,7 +295,7 @@ LL |     extern "ptx-kernel" fn m6() {}
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:59:5
+  --> $DIR/feature-gate-abi.rs:63:5
    |
 LL |     extern "x86-interrupt" fn m7() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -277,7 +304,7 @@ LL |     extern "x86-interrupt" fn m7() {}
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:60:5
+  --> $DIR/feature-gate-abi.rs:64:5
    |
 LL |     extern "thiscall" fn m8() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -285,7 +312,7 @@ LL |     extern "thiscall" fn m8() {}
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:61:5
+  --> $DIR/feature-gate-abi.rs:65:5
    |
 LL |     extern "amdgpu-kernel" fn m9() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -293,16 +320,25 @@ LL |     extern "amdgpu-kernel" fn m9() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
-error[E0658]: intrinsics are subject to change
+error[E0658]: efiapi ABI is experimental and subject to change
   --> $DIR/feature-gate-abi.rs:66:5
    |
+LL |     extern "efiapi" fn m10() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
+error[E0658]: intrinsics are subject to change
+  --> $DIR/feature-gate-abi.rs:71:5
+   |
 LL |     extern "rust-intrinsic" fn im1() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:68:5
+  --> $DIR/feature-gate-abi.rs:73:5
    |
 LL |     extern "platform-intrinsic" fn im2() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -311,7 +347,7 @@ LL |     extern "platform-intrinsic" fn im2() {}
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:70:5
+  --> $DIR/feature-gate-abi.rs:75:5
    |
 LL |     extern "vectorcall" fn im3() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -319,7 +355,7 @@ LL |     extern "vectorcall" fn im3() {}
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:71:5
+  --> $DIR/feature-gate-abi.rs:76:5
    |
 LL |     extern "rust-call" fn im4() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -328,7 +364,7 @@ LL |     extern "rust-call" fn im4() {}
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:72:5
+  --> $DIR/feature-gate-abi.rs:77:5
    |
 LL |     extern "msp430-interrupt" fn im5() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -337,7 +373,7 @@ LL |     extern "msp430-interrupt" fn im5() {}
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:73:5
+  --> $DIR/feature-gate-abi.rs:78:5
    |
 LL |     extern "ptx-kernel" fn im6() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -346,7 +382,7 @@ LL |     extern "ptx-kernel" fn im6() {}
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:74:5
+  --> $DIR/feature-gate-abi.rs:79:5
    |
 LL |     extern "x86-interrupt" fn im7() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -355,7 +391,7 @@ LL |     extern "x86-interrupt" fn im7() {}
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:75:5
+  --> $DIR/feature-gate-abi.rs:80:5
    |
 LL |     extern "thiscall" fn im8() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -363,7 +399,7 @@ LL |     extern "thiscall" fn im8() {}
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:76:5
+  --> $DIR/feature-gate-abi.rs:81:5
    |
 LL |     extern "amdgpu-kernel" fn im9() {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -371,8 +407,17 @@ LL |     extern "amdgpu-kernel" fn im9() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:82:5
+   |
+LL |     extern "efiapi" fn im10() {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error[E0658]: intrinsics are subject to change
-  --> $DIR/feature-gate-abi.rs:80:11
+  --> $DIR/feature-gate-abi.rs:86:11
    |
 LL | type A1 = extern "rust-intrinsic" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -380,7 +425,7 @@ LL | type A1 = extern "rust-intrinsic" fn();
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:81:11
+  --> $DIR/feature-gate-abi.rs:87:11
    |
 LL | type A2 = extern "platform-intrinsic" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -389,7 +434,7 @@ LL | type A2 = extern "platform-intrinsic" fn();
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:82:11
+  --> $DIR/feature-gate-abi.rs:88:11
    |
 LL | type A3 = extern "vectorcall" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -397,7 +442,7 @@ LL | type A3 = extern "vectorcall" fn();
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:83:11
+  --> $DIR/feature-gate-abi.rs:89:11
    |
 LL | type A4 = extern "rust-call" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^
@@ -406,7 +451,7 @@ LL | type A4 = extern "rust-call" fn();
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:84:11
+  --> $DIR/feature-gate-abi.rs:90:11
    |
 LL | type A5 = extern "msp430-interrupt" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -415,7 +460,7 @@ LL | type A5 = extern "msp430-interrupt" fn();
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:85:11
+  --> $DIR/feature-gate-abi.rs:91:11
    |
 LL | type A6 = extern "ptx-kernel" fn ();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -424,7 +469,7 @@ LL | type A6 = extern "ptx-kernel" fn ();
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:86:11
+  --> $DIR/feature-gate-abi.rs:92:11
    |
 LL | type A7 = extern "x86-interrupt" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -433,7 +478,7 @@ LL | type A7 = extern "x86-interrupt" fn();
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:87:11
+  --> $DIR/feature-gate-abi.rs:93:11
    |
 LL | type A8 = extern "thiscall" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^
@@ -441,7 +486,7 @@ LL | type A8 = extern "thiscall" fn();
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:88:11
+  --> $DIR/feature-gate-abi.rs:94:11
    |
 LL | type A9 = extern "amdgpu-kernel" fn();
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -449,8 +494,17 @@ LL | type A9 = extern "amdgpu-kernel" fn();
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:95:12
+   |
+LL | type A10 = extern "efiapi" fn();
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error[E0658]: intrinsics are subject to change
-  --> $DIR/feature-gate-abi.rs:91:1
+  --> $DIR/feature-gate-abi.rs:98:1
    |
 LL | extern "rust-intrinsic" {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -458,7 +512,7 @@ LL | extern "rust-intrinsic" {}
    = help: add `#![feature(intrinsics)]` to the crate attributes to enable
 
 error[E0658]: platform intrinsics are experimental and possibly buggy
-  --> $DIR/feature-gate-abi.rs:92:1
+  --> $DIR/feature-gate-abi.rs:99:1
    |
 LL | extern "platform-intrinsic" {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -467,7 +521,7 @@ LL | extern "platform-intrinsic" {}
    = help: add `#![feature(platform_intrinsics)]` to the crate attributes to enable
 
 error[E0658]: vectorcall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:93:1
+  --> $DIR/feature-gate-abi.rs:100:1
    |
 LL | extern "vectorcall" {}
    | ^^^^^^^^^^^^^^^^^^^^^^
@@ -475,7 +529,7 @@ LL | extern "vectorcall" {}
    = help: add `#![feature(abi_vectorcall)]` to the crate attributes to enable
 
 error[E0658]: rust-call ABI is subject to change
-  --> $DIR/feature-gate-abi.rs:94:1
+  --> $DIR/feature-gate-abi.rs:101:1
    |
 LL | extern "rust-call" {}
    | ^^^^^^^^^^^^^^^^^^^^^
@@ -484,7 +538,7 @@ LL | extern "rust-call" {}
    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
 
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:95:1
+  --> $DIR/feature-gate-abi.rs:102:1
    |
 LL | extern "msp430-interrupt" {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -493,7 +547,7 @@ LL | extern "msp430-interrupt" {}
    = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable
 
 error[E0658]: PTX ABIs are experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:96:1
+  --> $DIR/feature-gate-abi.rs:103:1
    |
 LL | extern "ptx-kernel" {}
    | ^^^^^^^^^^^^^^^^^^^^^^
@@ -502,7 +556,7 @@ LL | extern "ptx-kernel" {}
    = help: add `#![feature(abi_ptx)]` to the crate attributes to enable
 
 error[E0658]: x86-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:97:1
+  --> $DIR/feature-gate-abi.rs:104:1
    |
 LL | extern "x86-interrupt" {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -511,7 +565,7 @@ LL | extern "x86-interrupt" {}
    = help: add `#![feature(abi_x86_interrupt)]` to the crate attributes to enable
 
 error[E0658]: thiscall is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:98:1
+  --> $DIR/feature-gate-abi.rs:105:1
    |
 LL | extern "thiscall" {}
    | ^^^^^^^^^^^^^^^^^^^^
@@ -519,7 +573,7 @@ LL | extern "thiscall" {}
    = help: add `#![feature(abi_thiscall)]` to the crate attributes to enable
 
 error[E0658]: amdgpu-kernel ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi.rs:99:1
+  --> $DIR/feature-gate-abi.rs:106:1
    |
 LL | extern "amdgpu-kernel" {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -527,54 +581,63 @@ LL | extern "amdgpu-kernel" {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/51575
    = help: add `#![feature(abi_amdgpu_kernel)]` to the crate attributes to enable
 
+error[E0658]: efiapi ABI is experimental and subject to change
+  --> $DIR/feature-gate-abi.rs:107:1
+   |
+LL | extern "efiapi" {}
+   | ^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/1
+   = help: add `#![feature(abi_efiapi)]` to the crate attributes to enable
+
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:26:32
+  --> $DIR/feature-gate-abi.rs:28:32
    |
 LL |     extern "rust-intrinsic" fn m1();
    |                                ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:28:36
+  --> $DIR/feature-gate-abi.rs:30:36
    |
 LL |     extern "platform-intrinsic" fn m2();
    |                                    ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:12:33
+  --> $DIR/feature-gate-abi.rs:13:33
    |
 LL | extern "rust-intrinsic" fn f1() {}
    |                                 ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:14:37
+  --> $DIR/feature-gate-abi.rs:15:37
    |
 LL | extern "platform-intrinsic" fn f2() {}
    |                                     ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:51:37
+  --> $DIR/feature-gate-abi.rs:55:37
    |
 LL |     extern "rust-intrinsic" fn m1() {}
    |                                     ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:53:41
+  --> $DIR/feature-gate-abi.rs:57:41
    |
 LL |     extern "platform-intrinsic" fn m2() {}
    |                                         ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:66:38
+  --> $DIR/feature-gate-abi.rs:71:38
    |
 LL |     extern "rust-intrinsic" fn im1() {}
    |                                      ^^
 
 error: intrinsic must be in `extern "rust-intrinsic" { ... }` block
-  --> $DIR/feature-gate-abi.rs:68:42
+  --> $DIR/feature-gate-abi.rs:73:42
    |
 LL |     extern "platform-intrinsic" fn im2() {}
    |                                          ^^
 
-error: aborting due to 69 previous errors
+error: aborting due to 76 previous errors
 
 For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/parser/issue-8537.stderr b/src/test/ui/parser/issue-8537.stderr
index 29a68c9e1c3..b20226f87e8 100644
--- a/src/test/ui/parser/issue-8537.stderr
+++ b/src/test/ui/parser/issue-8537.stderr
@@ -4,7 +4,7 @@ error[E0703]: invalid ABI: found `invalid-ab_isize`
 LL |   "invalid-ab_isize"
    |   ^^^^^^^^^^^^^^^^^^ invalid ABI
    |
-   = help: valid ABIs: cdecl, stdcall, fastcall, vectorcall, thiscall, aapcs, win64, sysv64, ptx-kernel, msp430-interrupt, x86-interrupt, amdgpu-kernel, Rust, C, system, rust-intrinsic, rust-call, platform-intrinsic, unadjusted
+   = help: valid ABIs: cdecl, stdcall, fastcall, vectorcall, thiscall, aapcs, win64, sysv64, ptx-kernel, msp430-interrupt, x86-interrupt, amdgpu-kernel, efiapi, Rust, C, system, rust-intrinsic, rust-call, platform-intrinsic, unadjusted
 
 error: aborting due to previous error