| //@ test-mir-pass: EarlyOtherwiseBranch |
| //@ compile-flags: -Zmir-enable-passes=+UnreachableEnumBranching |
| |
| // must not optimize as it does not follow the pattern of |
| // left and right hand side being the same variant |
| |
| // EMIT_MIR early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff |
| fn noopt1(x: Option<u32>, y: Option<u32>) -> u32 { |
| // CHECK-LABEL: fn noopt1( |
| // CHECK: bb0: { |
| // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}}); |
| // CHECK-NOT: Ne |
| // CHECK-NOT: discriminant |
| // CHECK: switchInt(move [[LOCAL1]]) -> [ |
| // CHECK-NEXT: } |
| match (x, y) { |
| (Some(a), Some(b)) => 0, |
| (Some(a), None) => 1, |
| (None, Some(b)) => 2, |
| (None, None) => 3, |
| } |
| } |
| |
| fn main() { |
| noopt1(None, Some(0)); |
| } |