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