]> git.lizzy.rs Git - rust.git/blob - src/test/ui/target-feature/no-llvm-leaks.rs
Rollup merge of #101388 - compiler-errors:issue-101376, r=fee1-dead
[rust.git] / src / test / ui / target-feature / no-llvm-leaks.rs
1 // revisions: aarch64 x86-64
2 // [aarch64] compile-flags: -Ctarget-feature=+neon,+fp16,+fhm --target=aarch64-unknown-linux-gnu
3 // [aarch64] needs-llvm-components: aarch64
4 // [x86-64] compile-flags: -Ctarget-feature=+sse4.2,+rdrand --target=x86_64-unknown-linux-gnu
5 // [x86-64] needs-llvm-components: x86
6 // build-pass
7 #![no_core]
8 #![crate_type = "rlib"]
9 #![feature(intrinsics, rustc_attrs, no_core, lang_items, staged_api)]
10 #![stable(feature = "test", since = "1.0.0")]
11
12 // Supporting minimal rust core code
13 #[lang = "sized"]
14 trait Sized {}
15 #[lang = "copy"]
16 trait Copy {}
17 impl Copy for bool {}
18
19 extern "rust-intrinsic" {
20     #[rustc_const_stable(feature = "test", since = "1.0.0")]
21     fn unreachable() -> !;
22 }
23
24 #[rustc_builtin_macro]
25 macro_rules! cfg {
26     ($($cfg:tt)*) => {};
27 }
28
29 // Test code
30 const fn do_or_die(cond: bool) {
31     if cond {
32     } else {
33         unsafe { unreachable() }
34     }
35 }
36
37 macro_rules! assert {
38     ($x:expr $(,)?) => {
39         const _: () = do_or_die($x);
40     };
41 }
42
43
44 #[cfg(target_arch = "aarch64")]
45 fn check_aarch64() {
46     // This checks that the rustc feature name is used, not the LLVM feature.
47     assert!(cfg!(target_feature = "neon"));
48     assert!(cfg!(not(target_feature = "fp-armv8")));
49     assert!(cfg!(target_feature = "fhm"));
50     assert!(cfg!(not(target_feature = "fp16fml")));
51     assert!(cfg!(target_feature = "fp16"));
52     assert!(cfg!(not(target_feature = "fullfp16")));
53 }
54
55 #[cfg(target_arch = "x86_64")]
56 fn check_x86_64() {
57     // This checks that the rustc feature name is used, not the LLVM feature.
58     assert!(cfg!(target_feature = "rdrand"));
59     assert!(cfg!(not(target_feature = "rdrnd")));
60
61     // Likewise: We enable LLVM's crc32 feature with SSE4.2, but Rust says it's just SSE4.2
62     assert!(cfg!(target_feature = "sse4.2"));
63     assert!(cfg!(not(target_feature = "crc32")));
64 }