bjoernager/rust
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Update zip for better codegen, see discussion

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This commit is contained in:
Albin Hedman 2020-12-16 18:32:29 +01:00
parent 2f35fb1e11
commit be2c8f2d43
1 changed files with 2 additions and 2 deletions
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4
library/core/src/array/mod.rs
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@ -481,8 +481,8 @@ impl<T, const N: usize> [T; N] {
use crate::mem::MaybeUninit; use crate::mem::MaybeUninit;
let mut dst = MaybeUninit::uninit_array::<N>(); let mut dst = MaybeUninit::uninit_array::<N>();
for ((lhs, rhs), dst) in IntoIter::new(self).zip(IntoIter::new(rhs)).zip(&mut dst) { for (i, (lhs, rhs)) in IntoIter::new(self).zip(IntoIter::new(rhs)).enumerate() {
dst.write((lhs, rhs)); dst[i].write((lhs, rhs));
} }
// FIXME: Convert to crate::mem::transmute once it works with generics. // FIXME: Convert to crate::mem::transmute once it works with generics.
// unsafe { crate::mem::transmute::<[MaybeUninit<U>; N], [U; N]>(dst) } // unsafe { crate::mem::transmute::<[MaybeUninit<U>; N], [U; N]>(dst) }