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-rw-r--r--passes/opt/opt_const.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/opt/opt_const.cc b/passes/opt/opt_const.cc
index 90950096..5b87aeaa 100644
--- a/passes/opt/opt_const.cc
+++ b/passes/opt/opt_const.cc
@@ -125,6 +125,7 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module)
if (input.match(" 1")) ACTION_DO("\\Y", input.extract(1, 1));
#ifdef MUX_UNDEF_SEL_TO_UNDEF_RESULTS
if (input.match("01 ")) ACTION_DO("\\Y", input.extract(0, 1));
+ // TODO: "10 " -> replace with "!S" gate
// TODO: "0 " -> replace with "B AND S" gate
// TODO: " 1 " -> replace with "A OR S" gate
// TODO: "1 " -> replace with "B OR !S" gate