| //@ 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, | |
| } | |
| } |