src/test/mir-opt/simplify_locals_removes_unused_discriminant_reads.rs

   1 // unit-test: SimplifyLocals
   2
   3 fn map(x: Option<Box<()>>) -> Option<Box<()>> {
   4     match x {
   5         None => None,
   6         Some(x) => Some(x),
   7     }
   8 }
   9
  10 fn main() {
  11     map(None);
  12 }
  13
  14 // EMIT_MIR simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals.diff