rust/tests/run-coverage/match_or_pattern.coverage

   LL|      1|fn main() {
   LL|      1|    // Initialize test constants in a way that cannot be determined at compile time, to ensure
   LL|      1|    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
   LL|      1|    // dependent conditions.
   LL|      1|    let is_true = std::env::args().len() == 1;
   LL|      1|
   LL|      1|    let mut a: u8 = 0;
   LL|      1|    let mut b: u8 = 0;
   LL|      1|    if is_true {
   LL|      1|        a = 2;
   LL|      1|        b = 0;
   LL|      1|    }
                   ^0
   LL|      1|    match (a, b) {
   LL|       |        // Or patterns generate MIR `SwitchInt` with multiple targets to the same `BasicBlock`.
   LL|       |        // This test confirms a fix for Issue #79569.
   LL|      0|        (0 | 1, 2 | 3) => {}
   LL|      1|        _ => {}
   LL|       |    }
   LL|      1|    if is_true {
   LL|      1|        a = 0;
   LL|      1|        b = 0;
   LL|      1|    }
                   ^0
   LL|      1|    match (a, b) {
   LL|      0|        (0 | 1, 2 | 3) => {}
   LL|      1|        _ => {}
   LL|       |    }
   LL|      1|    if is_true {
   LL|      1|        a = 2;
   LL|      1|        b = 2;
   LL|      1|    }
                   ^0
   LL|      1|    match (a, b) {
   LL|      0|        (0 | 1, 2 | 3) => {}
   LL|      1|        _ => {}
   LL|       |    }
   LL|      1|    if is_true {
   LL|      1|        a = 0;
   LL|      1|        b = 2;
   LL|      1|    }
                   ^0
   LL|      1|    match (a, b) {
   LL|      1|        (0 | 1, 2 | 3) => {}
   LL|      0|        _ => {}
   LL|       |    }
   LL|      1|}