Comment that META_ASSIGN op-doubling on :U's is by design

rakudo · Jan 12, 2018 · f41d5e8 · f41d5e8
1 parent ac2e50c
commit f41d5e8
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/Perl6/Optimizer.nqp b/src/Perl6/Optimizer.nqp
@@ -1704,6 +1704,9 @@ class Perl6::Optimizer {
                                     $assignee_var,
                                     $operand));
                             } else {
+                                # We end up with two calls of the op if var
+                                # is not definite. This is by design:
+                                # https://irclog.perlgeek.de/perl6-dev/2018-01-12#i_15681388
                                 $op.push(QAST::Op.new( :op($call), :name($metaop[0].name),
                                     QAST::Op.new( :op('if'),
                                         QAST::Op.new( :op('p6definite'), $assignee_var),