Allow core_intrinsics when autodiff is enabled

Author: Sa4dUs

library/core/src/macros/mod.rs

@@ -1491,6 +1491,7 @@ pub(crate) mod builtin {
     ///   (or explicitly returns `-> ()`). Otherwise, it must be set to one of the allowed activities.
     #[unstable(feature = "autodiff", issue = "124509")]
     #[allow_internal_unstable(rustc_attrs)]
+    #[allow_internal_unstable(core_intrinsics)]
     #[rustc_builtin_macro]
     pub macro autodiff_forward($item:item) {
         /* compiler built-in */
@@ -1509,6 +1510,7 @@ pub(crate) mod builtin {
     ///   (or explicitly returns `-> ()`). Otherwise, it must be set to one of the allowed activities.
     #[unstable(feature = "autodiff", issue = "124509")]
     #[allow_internal_unstable(rustc_attrs)]
+    #[allow_internal_unstable(core_intrinsics)]
     #[rustc_builtin_macro]
     pub macro autodiff_reverse($item:item) {
         /* compiler built-in */

tests/codegen-llvm/autodiffv2.rs renamed to tests/codegen-llvm/autodiff/autodiffv2.rs

@@ -25,7 +25,6 @@
 // in our frontend and in the llvm backend to avoid these issues.
 
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_forward;
 

tests/codegen-llvm/autodiff/batched.rs

@@ -10,7 +10,6 @@
 // reduce this test to only match the first lines and the ret instructions.
 
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_forward;
 

tests/codegen-llvm/autodiff/generic.rs

@@ -2,7 +2,6 @@
 //@ no-prefer-dynamic
 //@ needs-enzyme
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_reverse;
 

tests/codegen-llvm/autodiff/identical_fnc.rs

@@ -10,7 +10,6 @@
 // We also explicetly test that we keep running merge_function after AD, by checking for two
 // identical function calls in the LLVM-IR, while having two different calls in the Rust code.
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_reverse;
 

tests/codegen-llvm/autodiff/scalar.rs

@@ -2,7 +2,6 @@
 //@ no-prefer-dynamic
 //@ needs-enzyme
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_reverse;
 

tests/codegen-llvm/autodiff/sret.rs

@@ -8,7 +8,6 @@
 // We therefore use this test to verify some of our sret handling.
 
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_reverse;
 

tests/codegen-llvm/autodiff/trait.rs

@@ -5,7 +5,6 @@
 // Just check it does not crash for now
 // CHECK: ;
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 
 use std::autodiff::autodiff_reverse;
 

tests/pretty/autodiff/autodiff_forward.pp

@@ -3,7 +3,6 @@
 //@ needs-enzyme
 
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 #[prelude_import]
 use ::std::prelude::rust_2015::*;
 #[macro_use]

tests/pretty/autodiff/autodiff_forward.rs

@@ -1,7 +1,6 @@
 //@ needs-enzyme
 
 #![feature(autodiff)]
-#![feature(core_intrinsics)]
 //@ pretty-mode:expanded
 //@ pretty-compare-only
 //@ pp-exact:autodiff_forward.pp