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-rw-r--r--frontends/ast/simplify.cc10
1 files changed, 7 insertions, 3 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc
index 1d381740..5f0e6867 100644
--- a/frontends/ast/simplify.cc
+++ b/frontends/ast/simplify.cc
@@ -498,7 +498,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage)
}
children.clear();
- if (str == "bufif0" || str == "bufif1")
+ if (str == "bufif0" || str == "bufif1" || str == "notif0" || str == "notif1")
{
if (children_list.size() != 3)
log_error("Invalid number of arguments for primitive `%s' at %s:%d!\n",
@@ -506,12 +506,16 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage)
std::vector<RTLIL::State> z_const(1, RTLIL::State::Sz);
+ AstNode *mux_input = children_list.at(1);
+ if (str == "notif0" || str == "notif1") {
+ mux_input = new AstNode(AST_BIT_NOT, mux_input);
+ }
AstNode *node = new AstNode(AST_TERNARY, children_list.at(2));
if (str == "bufif0") {
node->children.push_back(AstNode::mkconst_bits(z_const, false));
- node->children.push_back(children_list.at(1));
+ node->children.push_back(mux_input);
} else {
- node->children.push_back(children_list.at(1));
+ node->children.push_back(mux_input);
node->children.push_back(AstNode::mkconst_bits(z_const, false));
}