src/test/ui/simd/simd-size-align.rs

   1 // run-pass
   2 #![allow(deprecated)]
   3
   4
   5 #![feature(repr_simd)]
   6 #![allow(non_camel_case_types)]
   7
   8 use std::mem;
   9
  10 /// `T` should satisfy `size_of T (mod min_align_of T) === 0` to be stored at `Vec<T>` properly
  11 /// Please consult the issue #20460
  12 fn check<T>() {
  13     assert_eq!(mem::size_of::<T>() % mem::min_align_of::<T>(), 0);
  14     assert_eq!(mem::size_of::<T>() % mem::min_align_of::<T>(), 0);
  15     assert_eq!(mem::size_of::<T>() % mem::min_align_of::<T>(), 0);
  16 }
  17
  18 #[repr(simd)]
  19 struct U8<const N: usize>([u8; N]);
  20
  21 #[repr(simd)]
  22 struct I16<const N: usize>([i16; N]);
  23
  24 #[repr(simd)]
  25 struct F32<const N: usize>([f32; N]);
  26
  27 #[repr(simd)]
  28 struct Usize<const N: usize>([usize; N]);
  29
  30 #[repr(simd)]
  31 struct Isize<const N: usize>([isize; N]);
  32
  33 fn main() {
  34     check::<U8<2>>();
  35     check::<U8<4>>();
  36     check::<U8<8>>();
  37
  38     check::<I16<2>>();
  39     check::<I16<4>>();
  40     check::<I16<8>>();
  41
  42     check::<F32<2>>();
  43     check::<F32<4>>();
  44     check::<F32<8>>();
  45
  46     check::<Usize<2>>();
  47     check::<Usize<4>>();
  48     check::<Usize<8>>();
  49
  50     check::<Isize<2>>();
  51     check::<Isize<4>>();
  52     check::<Isize<8>>();
  53 }