From 9acc11209019b7d3f31bd1945066522ea9c2f88c Mon Sep 17 00:00:00 2001
From: Jubilee Young <workingjubilee@gmail.com>
Date: Tue, 13 Apr 2021 19:24:20 -0700
Subject: [PATCH] Use fabs intrinsic

---
 crates/core_simd/src/intrinsics.rs   | 3 +++
 crates/core_simd/src/vector/float.rs | 3 +--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/crates/core_simd/src/intrinsics.rs b/crates/core_simd/src/intrinsics.rs
index 4f89d00deb2..b85a3ad9922 100644
--- a/crates/core_simd/src/intrinsics.rs
+++ b/crates/core_simd/src/intrinsics.rs
@@ -51,6 +51,9 @@ extern "platform-intrinsic" {
     #[cfg(feature = "std")]
     pub(crate) fn simd_ceil<T>(x: T) -> T;
 
+    /// fabs
+    pub(crate) fn simd_fabs<T>(x: T) -> T;
+
     pub(crate) fn simd_eq<T, U>(x: T, y: T) -> U;
     pub(crate) fn simd_ne<T, U>(x: T, y: T) -> U;
     pub(crate) fn simd_lt<T, U>(x: T, y: T) -> U;
diff --git a/crates/core_simd/src/vector/float.rs b/crates/core_simd/src/vector/float.rs
index 393e39023d9..46e4229ddb5 100644
--- a/crates/core_simd/src/vector/float.rs
+++ b/crates/core_simd/src/vector/float.rs
@@ -32,8 +32,7 @@ macro_rules! impl_float_vector {
             /// equivalently-indexed lane in `self`.
             #[inline]
             pub fn abs(self) -> Self {
-                let no_sign = crate::$bits_ty::splat(!0 >> 1);
-                Self::from_bits(self.to_bits() & no_sign)
+                unsafe { crate::intrinsics::simd_fabs(self) }
             }
         }