34 lines
780 B
Rust
34 lines
780 B
Rust
|
//@ build-pass
|
||
|
|
//@ compile-flags: --target=armv7-unknown-linux-gnueabihf
|
||
|
|
//@ needs-llvm-components: arm
|
||
|
|
#![feature(no_core, rustc_attrs, decl_macro, lang_items)]
|
||
|
|
#![crate_type = "rlib"]
|
||
|
|
#![no_std]
|
||
|
|
#![no_core]
|
||
|
|
|
||
|
|
// We accidentally classified "d0"..="d15" as dregs, even though they are in dreg_low16,
|
||
|
|
// and thus didn't compile them on platforms with only 16 dregs.
|
||
|
|
// Highlighted in https://github.com/rust-lang/rust/issues/126797
|
||
|
|
|
||
|
|
#[lang = "sized"]
|
||
|
|
trait Sized {}
|
||
|
|
|
||
|
|
#[lang = "copy"]
|
||
|
|
trait Copy {}
|
||
|
|
|
||
|
|
impl Copy for f64 {}
|
||
|
|
|
||
|
|
#[rustc_builtin_macro]
|
||
|
|
pub macro asm("assembly template", $(operands,)* $(options($(option),*))?) {
|
||
|
|
/* compiler built-in */
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
fn f(x: f64) -> f64 {
|
||
|
|
let out: f64;
|
||
|
|
unsafe {
|
||
|
|
asm!("vmov.f64 d1, d0", out("d1") out, in("d0") x);
|
||
|
|
}
|
||
|
|
out
|
||
|
|
}
|