Fix cargo features for nightly (rust-lang#155)

* Fix cargo features for nightly

Author: calebzulawski

.github/workflows/ci.yml

@@ -208,8 +208,8 @@ jobs:
         features:
           - ""
           - "--features std"
-          - "--features const_evaluatable_checked"
-          - "--features std --features const_evaluatable_checked"
+          - "--features generic_const_exprs"
+          - "--features std --features generic_const_exprs"
 
     steps:
       - uses: actions/checkout@v2

crates/core_simd/Cargo.toml

@@ -9,9 +9,9 @@ categories = ["hardware-support", "no-std"]
 license = "MIT OR Apache-2.0"
 
 [features]
-default = ["std", "const_evaluatable_checked"]
+default = ["std", "generic_const_exprs"]
 std = []
-const_evaluatable_checked = []
+generic_const_exprs = []
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies.wasm-bindgen]
 version = "0.2"

crates/core_simd/src/lib.rs

@@ -1,15 +1,15 @@
-#![no_std]
+#![cfg_attr(not(feature = "std"), no_std)]
 #![allow(incomplete_features)]
 #![feature(
-    const_evaluatable_checked,
+    adt_const_params,
     const_fn_trait_bound,
-    const_generics,
     platform_intrinsics,
     repr_simd,
     simd_ffi,
     staged_api,
     stdsimd
 )]
+#![cfg_attr(feature = "generic_const_exprs", feature(generic_const_exprs))]
 #![warn(missing_docs)]
 #![unstable(feature = "portable_simd", issue = "86656")]
 //! Portable SIMD module.
@@ -22,7 +22,7 @@ mod reduction;
 mod select;
 pub use select::Select;
 
-#[cfg(feature = "const_evaluatable_checked")]
+#[cfg(feature = "generic_const_exprs")]
 mod to_bytes;
 
 mod comparisons;

crates/core_simd/src/masks.rs

@@ -178,11 +178,13 @@ where
     }
 
     /// Convert this mask to a bitmask, with one bit set per lane.
+    #[cfg(feature = "generic_const_exprs")]
     pub fn to_bitmask(self) -> [u8; LaneCount::<LANES>::BITMASK_LEN] {
         self.0.to_bitmask()
     }
 
     /// Convert a bitmask to a mask.
+    #[cfg(feature = "generic_const_exprs")]
     pub fn from_bitmask(bitmask: [u8; LaneCount::<LANES>::BITMASK_LEN]) -> Self {
         Self(mask_impl::Mask::from_bitmask(bitmask))
     }

crates/core_simd/src/masks/bitmask.rs

@@ -119,12 +119,14 @@ where
         Self(core::mem::transmute_copy(&mask), PhantomData)
     }
 
+    #[cfg(feature = "generic_const_exprs")]
     #[inline]
     pub fn to_bitmask(self) -> [u8; LaneCount::<LANES>::BITMASK_LEN] {
         // Safety: these are the same type and we are laundering the generic
         unsafe { core::mem::transmute_copy(&self.0) }
     }
 
+    #[cfg(feature = "generic_const_exprs")]
     #[inline]
     pub fn from_bitmask(bitmask: [u8; LaneCount::<LANES>::BITMASK_LEN]) -> Self {
         // Safety: these are the same type and we are laundering the generic

crates/core_simd/src/masks/full_masks.rs

@@ -101,6 +101,7 @@ where
         unsafe { Mask(crate::intrinsics::simd_cast(self.0)) }
     }
 
+    #[cfg(feature = "generic_const_exprs")]
     #[inline]
     pub fn to_bitmask(self) -> [u8; LaneCount::<LANES>::BITMASK_LEN] {
         unsafe {
@@ -127,6 +128,7 @@ where
         }
     }
 
+    #[cfg(feature = "generic_const_exprs")]
     #[inline]
     pub fn from_bitmask(mut bitmask: [u8; LaneCount::<LANES>::BITMASK_LEN]) -> Self {
         unsafe {

crates/core_simd/tests/masks.rs

@@ -68,6 +68,7 @@ macro_rules! test_mask_api {
                 assert_eq!(core_simd::Mask::<$type, 8>::from_int(int), mask);
             }
 
+            #[cfg(feature = "generic_const_exprs")]
             #[test]
             fn roundtrip_bitmask_conversion() {
                 let values = [

crates/core_simd/tests/to_bytes.rs

@@ -1,6 +1,6 @@
-#![feature(portable_simd, const_generics, const_evaluatable_checked)]
+#![feature(portable_simd, generic_const_exprs, adt_const_params)]
 #![allow(incomplete_features)]
-#![cfg(feature = "const_evaluatable_checked")]
+#![cfg(feature = "generic_const_exprs")]
 
 use core_simd::Simd;