Rollup merge of rust-lang#40168 - topecongiro:compile-fail-test-abi-ptx, r=petrochenkov

Add compile fail test for abi_ptx

Issue rust-lang#39059.

Author: GuillaumeGomez

src/test/compile-fail/feature-gate-abi.rs

@@ -11,13 +11,15 @@
 // gate-test-intrinsics
 // gate-test-platform_intrinsics
 // gate-test-abi_vectorcall
+// gate-test-abi_ptx
 
 // Functions
 extern "rust-intrinsic" fn f1() {} //~ ERROR intrinsics are subject to change
 extern "platform-intrinsic" fn f2() {} //~ ERROR platform intrinsics are experimental
 extern "vectorcall" fn f3() {} //~ ERROR vectorcall is experimental and subject to change
 extern "rust-call" fn f4() {} //~ ERROR rust-call ABI is subject to change
 extern "msp430-interrupt" fn f5() {} //~ ERROR msp430-interrupt ABI is experimental
+extern "ptx-kernel" fn f6() {} //~ ERROR PTX ABIs are experimental and subject to change
 
 // Methods in trait definition
 trait Tr {
@@ -26,12 +28,14 @@ trait Tr {
     extern "vectorcall" fn m3(); //~ ERROR vectorcall is experimental and subject to change
     extern "rust-call" fn m4(); //~ ERROR rust-call ABI is subject to change
     extern "msp430-interrupt" fn m5(); //~ ERROR msp430-interrupt ABI is experimental
+    extern "ptx-kernel" fn m6(); //~ ERROR PTX ABIs are experimental and subject to change
 
     extern "rust-intrinsic" fn dm1() {} //~ ERROR intrinsics are subject to change
     extern "platform-intrinsic" fn dm2() {} //~ ERROR platform intrinsics are experimental
     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
     extern "msp430-interrupt" fn dm5() {} //~ ERROR msp430-interrupt ABI is experimental
+    extern "ptx-kernel" fn dm6() {} //~ ERROR PTX ABIs are experimental and subject to change
 }
 
 struct S;
@@ -43,6 +47,7 @@ impl Tr for S {
     extern "vectorcall" fn m3() {} //~ ERROR vectorcall is experimental and subject to change
     extern "rust-call" fn m4() {} //~ ERROR rust-call ABI is subject to change
     extern "msp430-interrupt" fn m5() {} //~ ERROR msp430-interrupt ABI is experimental
+    extern "ptx-kernel" fn m6() {} //~ ERROR PTX ABIs are experimental and subject to change
 }
 
 // Methods in inherent impl
@@ -52,6 +57,7 @@ impl S {
     extern "vectorcall" fn im3() {} //~ ERROR vectorcall is experimental and subject to change
     extern "rust-call" fn im4() {} //~ ERROR rust-call ABI is subject to change
     extern "msp430-interrupt" fn im5() {} //~ ERROR msp430-interrupt ABI is experimental
+    extern "ptx-kernel" fn im6() {} //~ ERROR PTX ABIs are experimental and subject to change
 }
 
 // Function pointer types
@@ -60,12 +66,14 @@ type A2 = extern "platform-intrinsic" fn(); //~ ERROR platform intrinsics are ex
 type A3 = extern "vectorcall" fn(); //~ ERROR vectorcall is experimental and subject to change
 type A4 = extern "rust-call" fn(); //~ ERROR rust-call ABI is subject to change
 type A5 = extern "msp430-interrupt" fn(); //~ ERROR msp430-interrupt ABI is experimental
+type A6 = extern "ptx-kernel" fn (); //~ ERROR PTX ABIs are experimental and subject to change
 
 // Foreign modules
 extern "rust-intrinsic" {} //~ ERROR intrinsics are subject to change
 extern "platform-intrinsic" {} //~ ERROR platform intrinsics are experimental
 extern "vectorcall" {} //~ ERROR vectorcall is experimental and subject to change
 extern "rust-call" {} //~ ERROR rust-call ABI is subject to change
 extern "msp430-interrupt" {} //~ ERROR msp430-interrupt ABI is experimental
+extern "ptx-kernel" {} //~ ERROR PTX ABIs are experimental and subject to change
 
 fn main() {}

src/tools/tidy/src/features.rs

@@ -167,7 +167,7 @@ pub fn check(path: &Path, bad: &mut bool) {
 
     // FIXME get this whitelist empty.
     let whitelist = vec![
-        "abi_ptx", "simd",
+        "simd",
         "stmt_expr_attributes",
         "cfg_target_thread_local", "unwind_attributes",
     ];