Restrict most uses of const_fn to min_const_fn

src/test/ui/borrowck/move-in-static-initializer-issue-38520.rs

@@ -15,7 +15,7 @@
 // permitted as `Foo` is not copy (even in a static/const
 // initializer).
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 struct Foo(usize);
 

src/test/ui/consts/auxiliary/const_fn_lib.rs

@@ -11,6 +11,6 @@
 // Crate that exports a const fn. Used for testing cross-crate.
 
 #![crate_type="rlib"]
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 pub const fn foo() -> usize { 22 } //~ ERROR const fn is unstable

src/test/ui/consts/const-eval/issue-43197.rs

@@ -10,7 +10,7 @@
 
 #![warn(const_err)]
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 const fn foo(x: u32) -> u32 {
     x

src/test/ui/consts/const-eval/issue-47971.rs

@@ -10,7 +10,7 @@
 
 // compile-pass
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 struct S(pub &'static u32, pub u32);
 

src/test/ui/consts/const-pattern-not-const-evaluable.rs

@@ -10,7 +10,7 @@
 
 // compile-pass
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 #[derive(PartialEq, Eq)]
 enum Cake {

src/test/ui/consts/const-size_of-cycle.rs

@@ -10,8 +10,6 @@
 
 // error-pattern: cycle detected
 
-#![feature(const_fn)]
-
 struct Foo {
     bytes: [u8; std::mem::size_of::<Foo>()]
 }

src/test/ui/infinite/infinite-recursion-const-fn.rs

@@ -10,7 +10,7 @@
 
 //https://github.com/rust-lang/rust/issues/31364
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 const fn a() -> usize { b() }
 const fn b() -> usize { a() }
 const ARR: [i32; a()] = [5; 6]; //~ ERROR could not evaluate constant expression

src/test/ui/issues/issue-44415.rs

@@ -10,7 +10,7 @@
 
 //~^^^^^^^^^^ ERROR cycle detected when computing layout of
 
-#![feature(const_fn)]
+
 #![feature(core_intrinsics)]
 
 use std::intrinsics;

src/test/ui/unsafe/unsafe-const-fn.rs

@@ -10,7 +10,7 @@
 
 // A quick test of 'unsafe const fn' functionality
 
-#![feature(const_fn)]
+#![feature(min_const_fn)]
 
 const unsafe fn dummy(v: u32) -> u32 {
     !v