src/test/codegen/simd_arith_offset.rs

   1 // compile-flags: -C no-prepopulate-passes
   2 // only-64bit (because the LLVM type of i64 for usize shows up)
   3 //
   4
   5 #![crate_type = "lib"]
   6 #![feature(repr_simd, platform_intrinsics)]
   7
   8 extern "platform-intrinsic" {
   9     pub(crate) fn simd_arith_offset<T, U>(ptrs: T, offsets: U) -> T;
  10 }
  11
  12 /// A vector of *const T.
  13 #[derive(Debug, Copy, Clone)]
  14 #[repr(simd)]
  15 pub struct SimdConstPtr<T, const LANES: usize>([*const T; LANES]);
  16
  17 #[derive(Debug, Copy, Clone)]
  18 #[repr(simd)]
  19 pub struct Simd<T, const LANES: usize>([T; LANES]);
  20
  21 // CHECK-LABEL: smoke
  22 #[no_mangle]
  23 pub fn smoke(ptrs: SimdConstPtr<u8, 8>, offsets: Simd<usize, 8>) -> SimdConstPtr<u8, 8> {
  24     // CHECK: getelementptr i8, <8 x {{i8\*|ptr}}> %_3, <8 x i64> %_4
  25     unsafe { simd_arith_offset(ptrs, offsets) }
  26 }