mirror of https://github.com/rust-lang/rust
73 lines
2.0 KiB
Rust
73 lines
2.0 KiB
Rust
//@ revisions: aarch64 x86-64
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//@ [aarch64] compile-flags: -Ctarget-feature=+neon,+fp16,+fhm --target=aarch64-unknown-linux-gnu
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//@ [aarch64] needs-llvm-components: aarch64
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//@ [x86-64] compile-flags: -Ctarget-feature=+sse4.2,+rdrand --target=x86_64-unknown-linux-gnu
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//@ [x86-64] needs-llvm-components: x86
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//@ build-pass
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#![no_core]
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#![crate_type = "rlib"]
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#![feature(intrinsics, rustc_attrs, no_core, lang_items, staged_api, lint_reasons)]
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#![stable(feature = "test", since = "1.0.0")]
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// Supporting minimal rust core code
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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impl Copy for bool {}
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extern "rust-intrinsic" {
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#[rustc_const_stable(feature = "test", since = "1.0.0")]
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fn unreachable() -> !;
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}
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#[rustc_builtin_macro]
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macro_rules! cfg {
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($($cfg:tt)*) => {};
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}
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// Test code
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const fn do_or_die(cond: bool) {
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if cond {
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} else {
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unsafe { unreachable() }
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}
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}
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macro_rules! assert {
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($x:expr $(,)?) => {
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const _: () = do_or_die($x);
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};
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}
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#[cfg(target_arch = "aarch64")]
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fn check_aarch64() {
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// These checks that the rustc feature name is used, not the LLVM feature.
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assert!(cfg!(target_feature = "neon"));
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// #[expect(unexpected_cfgs)] except that 32-bit arm actually use fp-armv8
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{ assert!(cfg!(not(target_feature = "fp-armv8"))); }
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assert!(cfg!(target_feature = "fhm"));
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#[expect(unexpected_cfgs)]
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{ assert!(cfg!(not(target_feature = "fp16fml"))); }
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assert!(cfg!(target_feature = "fp16"));
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#[expect(unexpected_cfgs)]
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{ assert!(cfg!(not(target_feature = "fullfp16"))); }
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}
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#[cfg(target_arch = "x86_64")]
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fn check_x86_64() {
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// This checks that the rustc feature name is used, not the LLVM feature.
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assert!(cfg!(target_feature = "rdrand"));
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#[expect(unexpected_cfgs)]
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{ assert!(cfg!(not(target_feature = "rdrnd"))); }
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// Likewise: We enable LLVM's crc32 feature with SSE4.2, but Rust says it's just SSE4.2
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assert!(cfg!(target_feature = "sse4.2"));
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#[expect(unexpected_cfgs)]
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{ assert!(cfg!(not(target_feature = "crc32"))); }
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}
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