src/librustc_error_codes/error_codes/E0511.md

   1 Invalid monomorphization of an intrinsic function was used. Erroneous code
   2 example:
   3
   4 ```ignore (error-emitted-at-codegen-which-cannot-be-handled-by-compile_fail)
   5 #![feature(platform_intrinsics)]
   6
   7 extern "platform-intrinsic" {
   8     fn simd_add<T>(a: T, b: T) -> T;
   9 }
  10
  11 fn main() {
  12     unsafe { simd_add(0, 1); }
  13     // error: invalid monomorphization of `simd_add` intrinsic
  14 }
  15 ```
  16
  17 The generic type has to be a SIMD type. Example:
  18
  19 ```
  20 #![feature(repr_simd)]
  21 #![feature(platform_intrinsics)]
  22
  23 #[repr(simd)]
  24 #[derive(Copy, Clone)]
  25 struct i32x2(i32, i32);
  26
  27 extern "platform-intrinsic" {
  28     fn simd_add<T>(a: T, b: T) -> T;
  29 }
  30
  31 unsafe { simd_add(i32x2(0, 0), i32x2(1, 2)); } // ok!
  32 ```