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add multi-arch asm! label operand test #143227

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add multi-arch asm! label operand test #143227

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47 changes: 47 additions & 0 deletions tests/ui/asm/label-operand.rs
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//@ run-pass
//@ needs-asm-support
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This is going to fail on targets that aren't x86, arm or risc-v. Either add a fallback or split this into separate tests that are only enabled for that particular architecture.
//@ reference: asm.operand-type.supported-operands.label

use std::arch::asm;

#[cfg(any(target_arch = "arm", target_arch = "aarch64", target_arch = "arm64ec"))]
fn make_true(value: &mut bool) {
unsafe {
asm!(
"b {}",
label {
*value = true;
}
);
}
}

#[cfg(any(target_arch = "riscv32", target_arch = "riscv64"))]
fn make_true(value: &mut bool) {
unsafe {
asm!(
"j {}",
label {
*value = true;
}
);
}
}

#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
fn make_true(value: &mut bool) {
unsafe {
asm!(
"jmp {}",
label {
*value = true;
}
);
}
}

fn main() {
let mut value = false;
make_true(&mut value);
assert!(value);
}
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