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28 lines
611 B
Rust
28 lines
611 B
Rust
// compile-flags: -O
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// only-x86_64
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#![crate_type = "rlib"]
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#![allow(asm_sub_register)]
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use std::mem::MaybeUninit;
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use std::arch::asm;
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// CHECK-LABEL: @int
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#[no_mangle]
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pub unsafe fn int(x: MaybeUninit<i32>) -> MaybeUninit<i32> {
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let y: MaybeUninit<i32>;
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asm!("/*{}{}*/", in(reg) x, out(reg) y);
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y
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}
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// CHECK-LABEL: @inout
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#[no_mangle]
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pub unsafe fn inout(mut x: i32) -> MaybeUninit<u32> {
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let mut y: MaybeUninit<u32>;
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asm!("/*{}*/", inout(reg) x => y);
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asm!("/*{}*/", inout(reg) y => x);
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asm!("/*{}*/", inlateout(reg) x => y);
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asm!("/*{}*/", inlateout(reg) y => x);
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y
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}
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