rust/tests/run-make/pgo-use/main.rs
Nicholas Nethercote 3079bd96b9 Run rustfmt on tests/run-make/.
With the exception of `tests/run-make/translation/test.rs`, which has a
syntax error.

The expected output in `rustdoc-error-lines/rmake.rs`'s required slight
tweaking.

The two `reproducible-build.rs` files need `// ignore-tidy-linelength`
because rustfmt produces lines longer than 100 chars, which tidy doesn't
like, yuk.
2024-05-31 21:30:08 +10:00

24 lines
534 B
Rust

#[no_mangle]
pub fn cold_function(c: u8) {
println!("cold {}", c);
}
#[no_mangle]
pub fn hot_function(c: u8) {
std::env::set_var(format!("var{}", c), format!("hot {}", c));
}
fn main() {
let arg = std::env::args().skip(1).next().unwrap();
for i in 0..1000_000 {
let some_value = arg.as_bytes()[i % arg.len()];
if some_value == b'!' {
// This branch is never taken at runtime
cold_function(some_value);
} else {
hot_function(some_value);
}
}
}