fix(tests): dead_code

tests/basic_math.rs

@@ -18,12 +18,6 @@ use core::hint::black_box;
 
 use common::exit;
 
-// Either use black_box from core::hint or the value_fence definition
-// core hint is a nop, but possibly only prevents dead code elimination
-// value_fence has higher overhead but should be a bit safer regarding preventing optimizations
-// pub fn black_box<T>(x: T) -> T {
-// 	common::value_fence::<T>(x)
-// }
 mod common;
 
 #[test_case]

tests/common/mod.rs

@@ -275,11 +275,3 @@ macro_rules! runtime_entry_with_args {
 		}
 	};
 }
-
-//adapted from: https://rust-lang.github.io/rfcs/2360-bench-black-box.html
-#[inline(always)]
-pub fn value_fence<T>(x: T) -> T {
-	let y = unsafe { (&x as *const T).read_volatile() };
-	//std::hint::forget(x); - doesn't exist (anymore)
-	y
-}