mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 11:34:11 +00:00
27 lines
455 B
Rust
27 lines
455 B
Rust
//@ compile-flags: -O
|
|
#![crate_type = "lib"]
|
|
|
|
// Test that LLVM can eliminate the unreachable `All::None` branch.
|
|
|
|
pub enum All {
|
|
None,
|
|
Foo,
|
|
Bar,
|
|
}
|
|
|
|
// CHECK-LABEL: @issue_73031
|
|
#[no_mangle]
|
|
pub fn issue_73031(a: &mut All, q: i32) -> i32 {
|
|
*a = if q == 5 {
|
|
All::Foo
|
|
} else {
|
|
All::Bar
|
|
};
|
|
match *a {
|
|
// CHECK-NOT: panic
|
|
All::None => panic!(),
|
|
All::Foo => 1,
|
|
All::Bar => 2,
|
|
}
|
|
}
|