53 lines
1.1 KiB
Rust
53 lines
1.1 KiB
Rust
// Tests the new rules added by RFC 2396, including:
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// - applying `#[target_feature]` to safe functions is allowed
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// - calling functions with `#[target_feature]` is allowed in
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// functions which have (at least) the same features
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// - calling functions with `#[target_feature]` is allowed in
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// unsafe contexts
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// - functions with `#[target_feature]` can coerce to unsafe fn pointers
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// check-pass
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// only-x86_64
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// revisions: mir thir
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// [thir]compile-flags: -Z thir-unsafeck
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#![feature(target_feature_11)]
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#[target_feature(enable = "sse2")]
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const fn sse2() {}
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#[cfg(target_feature = "sse2")]
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const SSE2_ONLY: () = unsafe {
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sse2();
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};
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#[target_feature(enable = "sse2")]
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fn also_sse2() {
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sse2();
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}
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#[target_feature(enable = "sse2")]
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#[target_feature(enable = "avx")]
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fn sse2_and_avx() {
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sse2();
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}
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struct Foo;
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impl Foo {
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#[target_feature(enable = "sse2")]
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fn sse2(&self) {
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sse2();
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}
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}
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fn main() {
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if cfg!(target_feature = "sse2") {
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unsafe {
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sse2();
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Foo.sse2();
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}
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}
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let sse2_ptr: unsafe fn() = sse2;
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}
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