src/test/ui/simd/simd-intrinsic-generic-comparison.rs

   1 // run-pass
   2 // ignore-emscripten FIXME(#45351) hits an LLVM assert
   3
   4 #![feature(repr_simd, platform_intrinsics, concat_idents)]
   5 #![allow(non_camel_case_types)]
   6
   7 #[repr(simd)]
   8 #[derive(Copy, Clone)]
   9 struct i32x4(i32, i32, i32, i32);
  10 #[repr(simd)]
  11 #[derive(Copy, Clone)]
  12 struct u32x4(pub u32, pub u32, pub u32, pub u32);
  13 #[repr(simd)]
  14 #[derive(Copy, Clone)]
  15 struct f32x4(pub f32, pub f32, pub f32, pub f32);
  16
  17 extern "platform-intrinsic" {
  18     fn simd_eq<T, U>(x: T, y: T) -> U;
  19     fn simd_ne<T, U>(x: T, y: T) -> U;
  20     fn simd_lt<T, U>(x: T, y: T) -> U;
  21     fn simd_le<T, U>(x: T, y: T) -> U;
  22     fn simd_gt<T, U>(x: T, y: T) -> U;
  23     fn simd_ge<T, U>(x: T, y: T) -> U;
  24 }
  25
  26 macro_rules! cmp {
  27     ($method: ident($lhs: expr, $rhs: expr)) => {{
  28         let lhs = $lhs;
  29         let rhs = $rhs;
  30         let e: u32x4 = concat_idents!(simd_, $method)($lhs, $rhs);
  31         // assume the scalar version is correct/the behaviour we want.
  32         assert!((e.0 != 0) == lhs.0 .$method(&rhs.0));
  33         assert!((e.1 != 0) == lhs.1 .$method(&rhs.1));
  34         assert!((e.2 != 0) == lhs.2 .$method(&rhs.2));
  35         assert!((e.3 != 0) == lhs.3 .$method(&rhs.3));
  36     }}
  37 }
  38 macro_rules! tests {
  39     ($($lhs: ident, $rhs: ident;)*) => {{
  40         $(
  41             (|| {
  42                 cmp!(eq($lhs, $rhs));
  43                 cmp!(ne($lhs, $rhs));
  44
  45                 // test both directions
  46                 cmp!(lt($lhs, $rhs));
  47                 cmp!(lt($rhs, $lhs));
  48
  49                 cmp!(le($lhs, $rhs));
  50                 cmp!(le($rhs, $lhs));
  51
  52                 cmp!(gt($lhs, $rhs));
  53                 cmp!(gt($rhs, $lhs));
  54
  55                 cmp!(ge($lhs, $rhs));
  56                 cmp!(ge($rhs, $lhs));
  57             })();
  58             )*
  59     }}
  60 }
  61 fn main() {
  62     // 13 vs. -100 tests that we get signed vs. unsigned comparisons
  63     // correct (i32: 13 > -100, u32: 13 < -100).    let i1 = i32x4(10, -11, 12, 13);
  64     let i1 = i32x4(10, -11, 12, 13);
  65     let i2 = i32x4(5, -5, 20, -100);
  66     let i3 = i32x4(10, -11, 20, -100);
  67
  68     let u1 = u32x4(10, !11+1, 12, 13);
  69     let u2 = u32x4(5, !5+1, 20, !100+1);
  70     let u3 = u32x4(10, !11+1, 20, !100+1);
  71
  72     let f1 = f32x4(10.0, -11.0, 12.0, 13.0);
  73     let f2 = f32x4(5.0, -5.0, 20.0, -100.0);
  74     let f3 = f32x4(10.0, -11.0, 20.0, -100.0);
  75
  76     unsafe {
  77         tests! {
  78             i1, i1;
  79             u1, u1;
  80             f1, f1;
  81
  82             i1, i2;
  83             u1, u2;
  84             f1, f2;
  85
  86             i1, i3;
  87             u1, u3;
  88             f1, f3;
  89         }
  90     }
  91
  92     // NAN comparisons are special:
  93     // -11 (*)    13
  94     // -5        -100 (*)
  95     let f4 = f32x4(f32::NAN, f1.1, f32::NAN, f2.3);
  96
  97     unsafe {
  98         tests! {
  99             f1, f4;
 100             f2, f4;
 101             f4, f4;
 102         }
 103     }
 104 }