copy elision example

---
Signed-off-by: Brandon Neth <[email protected]>

doc/rst/language/spec/variables.rst

@@ -1129,6 +1129,23 @@ Copy elision does not apply:
       }
       elideCopyBothConditional();
 
+      proc elideCopyParamSelect() {
+        type T = int;
+        var x = makeRecord();
+        var y = x; // copy elided
+        select T {
+          when real {
+            writeln(x);
+          }
+          when string {
+            writeln(x);
+          }
+          otherwise {
+            writeln(y); // compiler can determine this is the only possible branch
+          }
+        }
+      }
+      elideCopyParamSelect();
    .. BLOCK-test-chapeloutput
 
       init (default)
@@ -1146,5 +1163,7 @@ Copy elision does not apply:
       init (default)
       block ending
       deinit 0
+      init (default)
+      deinit 0