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-rw-r--r--kernel/yosys.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/yosys.cc b/kernel/yosys.cc
index fd5a3504a..e5b22eba7 100644
--- a/kernel/yosys.cc
+++ b/kernel/yosys.cc
@@ -792,6 +792,8 @@ void run_frontend(std::string filename, std::string command, std::string *backen
command = "vhdl";
else if (filename.size() > 4 && filename.substr(filename.size()-5) == ".blif")
command = "blif";
+ else if (filename.size() > 4 && filename.substr(filename.size()-5) == ".json")
+ command = "json";
else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".il")
command = "ilang";
else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".ys")