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// ignore-s390x
// ignore-emscripten
// ignore-powerpc
// ignore-powerpc64
// ignore-powerpc64le
// ignore-sparc
// ignore-sparc64
#![feature(llvm_asm)]
#[cfg(any(target_arch = "x86",
target_arch = "x86_64",
target_arch = "arm",
target_arch = "aarch64",
target_arch = "mips",
target_arch = "mips64"))]
mod test_cases {
fn is_move() {
let y: &mut isize;
let x = &mut 0isize;
unsafe {
llvm_asm!("nop" : : "r"(x));
}
let z = x; //~ ERROR use of moved value: `x`
}
fn in_is_read() {
let mut x = 3;
let y = &mut x;
unsafe {
llvm_asm!("nop" : : "r"(x)); //~ ERROR cannot use
}
let z = y;
}
fn out_is_assign() {
let x = 3;
unsafe {
llvm_asm!("nop" : "=r"(x)); //~ ERROR cannot assign twice
}
let mut a = &mut 3;
let b = &*a;
unsafe {
llvm_asm!("nop" : "=r"(a)); // OK, Shallow write to `a`
}
let c = b;
let d = *a;
}
fn rw_is_assign() {
let x = 3;
unsafe {
llvm_asm!("nop" : "+r"(x)); //~ ERROR cannot assign twice
}
}
fn indirect_is_not_init() {
let x: i32;
unsafe {
llvm_asm!("nop" : "=*r"(x)); //~ ERROR use of possibly-uninitialized variable
}
}
fn rw_is_read() {
let mut x = &mut 3;
let y = &*x;
unsafe {
llvm_asm!("nop" : "+r"(x)); //~ ERROR cannot assign to `x` because it is borrowed
}
let z = y;
}
fn two_moves() {
let x = &mut 2;
unsafe {
llvm_asm!("nop" : : "r"(x), "r"(x) ); //~ ERROR use of moved value
}
}
}
fn main() {}
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