Added initial pass structure

passes/silimate/sat_clockgate.cc

@@ -0,0 +1,56 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2024  Silimate Inc.
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "kernel/yosys.h"
+#include "kernel/sigtools.h"
+
+USING_YOSYS_NAMESPACE
+PRIVATE_NAMESPACE_BEGIN
+
+struct SatClockgatePass : public Pass {
+	SatClockgatePass() : Pass("sat_clockgate", "SAT-based clock gating analysis") { }
+
+	void help() override
+	{
+		log("\n");
+		log("    sat_clockgate [selection]\n");
+		log("\n");
+		log("This command performs SAT-based clock gating analysis.\n");
+		log("\n");
+	}
+
+	void execute(std::vector<std::string> args, RTLIL::Design *design) override
+	{
+		log_header(design, "Executing SAT_CLOCKGATE pass.\n");
+
+		size_t argidx;
+		for (argidx = 1; argidx < args.size(); argidx++) {
+			// Parse options here
+			break;
+		}
+		extra_args(args, argidx, design);
+
+		for (auto module : design->selected_modules()) {
+			log("Processing module %s...\n", log_id(module));
+			// TODO: Implement SAT-based clock gating logic
+		}
+	}
+} SatClockgatePass;
+
+PRIVATE_NAMESPACE_END