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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
commit64d98f8ee037282c35007b64c2649055c56af1db (patch)
tree5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/simd/shuffle-not-out-of-bounds.rs
parentAdding debian version 1.67.1+dfsg1-1. (diff)
downloadrustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz
rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/simd/shuffle-not-out-of-bounds.rs')
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diff --git a/tests/ui/simd/shuffle-not-out-of-bounds.rs b/tests/ui/simd/shuffle-not-out-of-bounds.rs
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+// build-fail
+#![allow(non_camel_case_types)]
+#![feature(repr_simd, platform_intrinsics)]
+
+// Test for #73542 to verify out-of-bounds shuffle vectors do not compile.
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x2([u8; 2]);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x4([u8; 4]);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x8([u8; 8]);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x16([u8; 16]);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x32([u8; 32]);
+
+#[repr(simd)]
+#[derive(Copy, Clone)]
+struct u8x64([u8; 64]);
+
+extern "platform-intrinsic" {
+ pub fn simd_shuffle2<T, U>(x: T, y: T, idx: [u32; 2]) -> U;
+ pub fn simd_shuffle4<T, U>(x: T, y: T, idx: [u32; 4]) -> U;
+ pub fn simd_shuffle8<T, U>(x: T, y: T, idx: [u32; 8]) -> U;
+ pub fn simd_shuffle16<T, U>(x: T, y: T, idx: [u32; 16]) -> U;
+ pub fn simd_shuffle32<T, U>(x: T, y: T, idx: [u32; 32]) -> U;
+ pub fn simd_shuffle64<T, U>(x: T, y: T, idx: [u32; 64]) -> U;
+}
+
+// Test vectors by lane size. Since LLVM does not distinguish between a shuffle
+// over two f32s and a shuffle over two u64s, or any other such combination,
+// it is not necessary to test every possible vector, only lane counts.
+macro_rules! test_shuffle_lanes {
+ ($n:literal, $x:ident, $y:ident) => {
+ unsafe {
+ let shuffle: $x = {
+ const ARR: [u32; $n] = {
+ let mut arr = [0; $n];
+ arr[0] = $n * 2;
+ arr
+ };
+ let mut n: u8 = $n;
+ let vals = [0; $n].map(|_| { n = n - 1; n });
+ let vec1 = $x(vals);
+ let vec2 = $x(vals);
+ $y(vec1, vec2, ARR)
+ };
+ }
+ }
+}
+//~^^^^^ ERROR: invalid monomorphization of `simd_shuffle2` intrinsic
+//~| ERROR: invalid monomorphization of `simd_shuffle4` intrinsic
+//~| ERROR: invalid monomorphization of `simd_shuffle8` intrinsic
+//~| ERROR: invalid monomorphization of `simd_shuffle16` intrinsic
+//~| ERROR: invalid monomorphization of `simd_shuffle32` intrinsic
+//~| ERROR: invalid monomorphization of `simd_shuffle64` intrinsic
+// Because the test is mostly embedded in a macro, all the errors have the same origin point.
+// And unfortunately, standard comments, as in the UI test harness, disappear in macros!
+
+fn main() {
+ test_shuffle_lanes!(2, u8x2, simd_shuffle2);
+ test_shuffle_lanes!(4, u8x4, simd_shuffle4);
+ test_shuffle_lanes!(8, u8x8, simd_shuffle8);
+ test_shuffle_lanes!(16, u8x16, simd_shuffle16);
+ test_shuffle_lanes!(32, u8x32, simd_shuffle32);
+ test_shuffle_lanes!(64, u8x64, simd_shuffle64);
+
+ extern "platform-intrinsic" {
+ fn simd_shuffle<T, I, U>(a: T, b: T, i: I) -> U;
+ }
+ let v = u8x2([0, 0]);
+ const I: [u32; 2] = [4, 4];
+ unsafe {
+ let _: u8x2 = simd_shuffle(v, v, I);
+ //~^ ERROR invalid monomorphization of `simd_shuffle` intrinsic
+ }
+}