| //@ 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 |
| } |
