gistfile1.txt

I think there might be a sliver of performance gain on that test script
with the following, but it is hard to tell.  Oddly, it generates smaller
QAST but larger MAST.


diff --git a/src/core/Array.pm b/src/core/Array.pm
index e4960b0..2e03127 100644
--- a/src/core/Array.pm
+++ b/src/core/Array.pm
@@ -319,7 +319,7 @@ my class Array { # declared in BOOTSTRAP

     method is-lazy() {
         my $todo := nqp::getattr(self, List, '$!todo');
-        if $todo.DEFINITE {
+        $todo.DEFINITE and {
             $todo.reify-until-lazy();
             if $todo.fully-reified {
                 nqp::bindattr(self, List, '$!todo', Mu);
@@ -328,10 +328,7 @@ my class Array { # declared in BOOTSTRAP
             else {
                 True;
             }
-        }
-        else {
-            False
-        }
+        }()
     }