5f27abdbc8
Scalable vector types only work with the relevant target features enabled, so require this for any function with the types in its signature.
40 lines
1 KiB
Rust
40 lines
1 KiB
Rust
//@ build-fail
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//@ compile-flags: --crate-type=lib
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//@ only-aarch64
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#![allow(incomplete_features, internal_features)]
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#![feature(
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simd_ffi,
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rustc_attrs,
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link_llvm_intrinsics
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)]
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#[derive(Copy, Clone)]
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#[rustc_scalable_vector(4)]
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#[allow(non_camel_case_types)]
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pub struct svint32_t(i32);
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#[inline(never)]
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#[target_feature(enable = "sve")]
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pub unsafe fn svdup_n_s32(op: i32) -> svint32_t {
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extern "C" {
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#[cfg_attr(target_arch = "aarch64", link_name = "llvm.aarch64.sve.dup.x.nxv4i32")]
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fn _svdup_n_s32(op: i32) -> svint32_t;
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//~^ WARN: `extern` block uses type `svint32_t`, which is not FFI-safe
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}
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unsafe { _svdup_n_s32(op) }
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}
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pub fn non_annotated_callee(x: svint32_t) {}
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//~^ ERROR: this function definition uses scalable vector type `svint32_t`
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#[target_feature(enable = "sve")]
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pub fn annotated_callee(x: svint32_t) {} // okay!
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#[target_feature(enable = "sve")]
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pub fn caller() {
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unsafe {
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let a = svdup_n_s32(42);
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non_annotated_callee(a);
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annotated_callee(a);
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}
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}
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