Merge pull request rust-lang#386 from rust-lang/core-intrinsics

Use core::intrinsics

Author: calebzulawski

crates/core_simd/src/intrinsics.rs

@@ -1,13 +1,13 @@
 #![no_std]
 #![feature(
+    core_intrinsics,
     const_refs_to_cell,
     const_maybe_uninit_as_mut_ptr,
     const_mut_refs,
     convert_float_to_int,
     decl_macro,
     inline_const,
     intra_doc_pointers,
-    platform_intrinsics,
     repr_simd,
     simd_ffi,
     staged_api,

crates/core_simd/src/lib.rs

@@ -12,9 +12,7 @@
 )]
 mod mask_impl;
 
-use crate::simd::{
-    cmp::SimdPartialEq, intrinsics, LaneCount, Simd, SimdCast, SimdElement, SupportedLaneCount,
-};
+use crate::simd::{cmp::SimdPartialEq, LaneCount, Simd, SimdCast, SimdElement, SupportedLaneCount};
 use core::cmp::Ordering;
 use core::{fmt, mem};
 
@@ -141,8 +139,9 @@ where
         // but these are "dependently-sized" types, so copy elision it is!
         unsafe {
             let bytes: [u8; N] = mem::transmute_copy(&array);
-            let bools: Simd<i8, N> = intrinsics::simd_ne(Simd::from_array(bytes), Simd::splat(0u8));
-            Mask::from_int_unchecked(intrinsics::simd_cast(bools))
+            let bools: Simd<i8, N> =
+                core::intrinsics::simd::simd_ne(Simd::from_array(bytes), Simd::splat(0u8));
+            Mask::from_int_unchecked(core::intrinsics::simd::simd_cast(bools))
         }
     }
 
@@ -160,7 +159,7 @@ where
         // This would be hypothetically valid as an "in-place" transmute,
         // but these are "dependently-sized" types, so copy elision it is!
         unsafe {
-            let mut bytes: Simd<i8, N> = intrinsics::simd_cast(self.to_int());
+            let mut bytes: Simd<i8, N> = core::intrinsics::simd::simd_cast(self.to_int());
             bytes &= Simd::splat(1i8);
             mem::transmute_copy(&bytes)
         }
@@ -374,15 +373,17 @@ where
         );
 
         // Safety: the input and output are integer vectors
-        let index: Simd<T, N> = unsafe { intrinsics::simd_cast(index) };
+        let index: Simd<T, N> = unsafe { core::intrinsics::simd::simd_cast(index) };
 
         let masked_index = self.select(index, Self::splat(true).to_int());
 
         // Safety: the input and output are integer vectors
-        let masked_index: Simd<T::Unsigned, N> = unsafe { intrinsics::simd_cast(masked_index) };
+        let masked_index: Simd<T::Unsigned, N> =
+            unsafe { core::intrinsics::simd::simd_cast(masked_index) };
 
         // Safety: the input is an integer vector
-        let min_index: T::Unsigned = unsafe { intrinsics::simd_reduce_min(masked_index) };
+        let min_index: T::Unsigned =
+            unsafe { core::intrinsics::simd::simd_reduce_min(masked_index) };
 
         // Safety: the return value is the unsigned version of T
         let min_index: T = unsafe { core::mem::transmute_copy(&min_index) };

crates/core_simd/src/masks.rs

@@ -1,6 +1,5 @@
 #![allow(unused_imports)]
 use super::MaskElement;
-use crate::simd::intrinsics;
 use crate::simd::{LaneCount, Simd, SupportedLaneCount};
 use core::marker::PhantomData;
 
@@ -109,14 +108,18 @@ where
     #[must_use = "method returns a new vector and does not mutate the original value"]
     pub fn to_int(self) -> Simd<T, N> {
         unsafe {
-            intrinsics::simd_select_bitmask(self.0, Simd::splat(T::TRUE), Simd::splat(T::FALSE))
+            core::intrinsics::simd::simd_select_bitmask(
+                self.0,
+                Simd::splat(T::TRUE),
+                Simd::splat(T::FALSE),
+            )
         }
     }
 
     #[inline]
     #[must_use = "method returns a new mask and does not mutate the original value"]
     pub unsafe fn from_int_unchecked(value: Simd<T, N>) -> Self {
-        unsafe { Self(intrinsics::simd_bitmask(value), PhantomData) }
+        unsafe { Self(core::intrinsics::simd::simd_bitmask(value), PhantomData) }
     }
 
     #[inline]

crates/core_simd/src/masks/bitmask.rs

@@ -1,6 +1,5 @@
 //! Masks that take up full SIMD vector registers.
 
-use crate::simd::intrinsics;
 use crate::simd::{LaneCount, MaskElement, Simd, SupportedLaneCount};
 
 #[repr(transparent)]
@@ -138,7 +137,7 @@ where
         U: MaskElement,
     {
         // Safety: masks are simply integer vectors of 0 and -1, and we can cast the element type.
-        unsafe { Mask(intrinsics::simd_cast(self.0)) }
+        unsafe { Mask(core::intrinsics::simd::simd_cast(self.0)) }
     }
 
     #[inline]
@@ -150,7 +149,7 @@ where
         unsafe {
             // Compute the bitmask
             let mut bytes: <LaneCount<N> as SupportedLaneCount>::BitMask =
-                intrinsics::simd_bitmask(self.0);
+                core::intrinsics::simd::simd_bitmask(self.0);
 
             // LLVM assumes bit order should match endianness
             if cfg!(target_endian = "big") {
@@ -183,7 +182,7 @@ where
             }
 
             // Compute the regular mask
-            Self::from_int_unchecked(intrinsics::simd_select_bitmask(
+            Self::from_int_unchecked(core::intrinsics::simd::simd_select_bitmask(
                 bytes,
                 Self::splat(true).to_int(),
                 Self::splat(false).to_int(),
@@ -199,7 +198,7 @@ where
         let resized = self.to_int().resize::<M>(T::FALSE);
 
         // Safety: `resized` is an integer vector with length M, which must match T
-        let bitmask: U = unsafe { intrinsics::simd_bitmask(resized) };
+        let bitmask: U = unsafe { core::intrinsics::simd::simd_bitmask(resized) };
 
         // LLVM assumes bit order should match endianness
         if cfg!(target_endian = "big") {
@@ -223,7 +222,7 @@ where
 
         // SAFETY: `mask` is the correct bitmask type for a u64 bitmask
         let mask: Simd<T, M> = unsafe {
-            intrinsics::simd_select_bitmask(
+            core::intrinsics::simd::simd_select_bitmask(
                 bitmask,
                 Simd::<T, M>::splat(T::TRUE),
                 Simd::<T, M>::splat(T::FALSE),
@@ -274,14 +273,14 @@ where
     #[must_use = "method returns a new bool and does not mutate the original value"]
     pub fn any(self) -> bool {
         // Safety: use `self` as an integer vector
-        unsafe { intrinsics::simd_reduce_any(self.to_int()) }
+        unsafe { core::intrinsics::simd::simd_reduce_any(self.to_int()) }
     }
 
     #[inline]
     #[must_use = "method returns a new vector and does not mutate the original value"]
     pub fn all(self) -> bool {
         // Safety: use `self` as an integer vector
-        unsafe { intrinsics::simd_reduce_all(self.to_int()) }
+        unsafe { core::intrinsics::simd::simd_reduce_all(self.to_int()) }
     }
 }
 
@@ -306,7 +305,7 @@ where
     #[must_use = "method returns a new mask and does not mutate the original value"]
     fn bitand(self, rhs: Self) -> Self {
         // Safety: `self` is an integer vector
-        unsafe { Self(intrinsics::simd_and(self.0, rhs.0)) }
+        unsafe { Self(core::intrinsics::simd::simd_and(self.0, rhs.0)) }
     }
 }
 
@@ -320,7 +319,7 @@ where
     #[must_use = "method returns a new mask and does not mutate the original value"]
     fn bitor(self, rhs: Self) -> Self {
         // Safety: `self` is an integer vector
-        unsafe { Self(intrinsics::simd_or(self.0, rhs.0)) }
+        unsafe { Self(core::intrinsics::simd::simd_or(self.0, rhs.0)) }
     }
 }
 
@@ -334,7 +333,7 @@ where
     #[must_use = "method returns a new mask and does not mutate the original value"]
     fn bitxor(self, rhs: Self) -> Self {
         // Safety: `self` is an integer vector
-        unsafe { Self(intrinsics::simd_xor(self.0, rhs.0)) }
+        unsafe { Self(core::intrinsics::simd::simd_xor(self.0, rhs.0)) }
     }
 }
 

crates/core_simd/src/masks/full_masks.rs

@@ -1,8 +1,6 @@
 #[macro_use]
 mod swizzle;
 
-pub(crate) mod intrinsics;
-
 mod alias;
 mod cast;
 mod fmt;
@@ -27,8 +25,6 @@ pub mod simd {
 
     pub mod cmp;
 
-    pub(crate) use crate::core_simd::intrinsics;
-
     pub use crate::core_simd::alias::*;
     pub use crate::core_simd::cast::*;
     pub use crate::core_simd::lane_count::{LaneCount, SupportedLaneCount};