src/test/compile-fail/simd-intrinsic-generic-cast.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(repr_simd, platform_intrinsics, rustc_attrs)]
  12
  13 #[repr(simd)]
  14 #[derive(Copy, Clone)]
  15 #[allow(non_camel_case_types)]
  16 struct i32x4(i32, i32, i32, i32);
  17 #[repr(simd)]
  18 #[derive(Copy, Clone)]
  19 #[allow(non_camel_case_types)]
  20 struct i32x8(i32, i32, i32, i32,
  21              i32, i32, i32, i32);
  22
  23 #[repr(simd)]
  24 #[derive(Copy, Clone)]
  25 #[allow(non_camel_case_types)]
  26 struct f32x4(f32, f32, f32, f32);
  27 #[repr(simd)]
  28 #[derive(Copy, Clone)]
  29 #[allow(non_camel_case_types)]
  30 struct f32x8(f32, f32, f32, f32,
  31              f32, f32, f32, f32);
  32
  33
  34 extern "platform-intrinsic" {
  35     fn simd_cast<T, U>(x: T) -> U;
  36 }
  37
  38 #[rustc_no_mir] // FIXME #27840 MIR doesn't provide precise spans for calls.
  39 fn main() {
  40     let x = i32x4(0, 0, 0, 0);
  41
  42     unsafe {
  43         simd_cast::<i32, i32>(0);
  44         //~^ ERROR expected SIMD input type, found non-SIMD `i32`
  45         simd_cast::<i32, i32x4>(0);
  46         //~^ ERROR expected SIMD input type, found non-SIMD `i32`
  47         simd_cast::<i32x4, i32>(x);
  48         //~^ ERROR expected SIMD return type, found non-SIMD `i32`
  49         simd_cast::<_, i32x8>(x);
  50 //~^ ERROR return type with length 4 (same as input type `i32x4`), found `i32x8` with length 8
  51     }
  52 }