Add Place getter to Operand

Author: ecstatic-morse

src/librustc/mir/mod.rs

@@ -1993,6 +1993,15 @@ impl<'tcx> Operand<'tcx> {
             Operand::Move(place) => Operand::Copy(place),
         }
     }
+
+    /// Returns the `Place` that is the target of this `Operand`, or `None` if this `Operand` is a
+    /// constant.
+    pub fn place(&self) -> Option<&Place<'tcx>> {
+        match self {
+            Operand::Copy(place) | Operand::Move(place) => Some(place),
+            Operand::Constant(_) => None,
+        }
+    }
 }
 
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