From edf7267019ec2e9a69be2fc5d5022a738acbe7b2 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddieh@ece.ubc.ca>
Date: Fri, 8 Feb 2019 13:58:20 -0800
Subject: [PATCH] Refactor kernel/cost.h definition into cost.cc

---
 Makefile       |  1 +
 kernel/cost.cc | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 kernel/cost.h  | 51 ++--------------------------------
 3 files changed, 78 insertions(+), 49 deletions(-)
 create mode 100644 kernel/cost.cc

diff --git a/Makefile b/Makefile
index d83a71256..db4bf7a8f 100644
--- a/Makefile
+++ b/Makefile
@@ -430,6 +430,7 @@ $(eval $(call add_include_file,backends/ilang/ilang_backend.h))
 
 OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o kernel/yosys.o
 OBJS += kernel/cellaigs.o kernel/celledges.o
+OBJS += kernel/cost.o
 
 kernel/log.o: CXXFLAGS += -DYOSYS_SRC='"$(YOSYS_SRC)"'
 kernel/yosys.o: CXXFLAGS += -DYOSYS_DATDIR='"$(DATDIR)"'
diff --git a/kernel/cost.cc b/kernel/cost.cc
new file mode 100644
index 000000000..175f01e64
--- /dev/null
+++ b/kernel/cost.cc
@@ -0,0 +1,75 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
+ *
+ *  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/cost.h"
+
+YOSYS_NAMESPACE_BEGIN
+
+int get_cell_cost(RTLIL::IdString type, const dict<RTLIL::IdString, RTLIL::Const> &parameters,
+		RTLIL::Design *design, dict<RTLIL::IdString, int> *mod_cost_cache)
+{
+	static dict<RTLIL::IdString, int> gate_cost = {
+		{ "$_BUF_",    1 },
+		{ "$_NOT_",    2 },
+		{ "$_AND_",    4 },
+		{ "$_NAND_",   4 },
+		{ "$_OR_",     4 },
+		{ "$_NOR_",    4 },
+		{ "$_ANDNOT_", 4 },
+		{ "$_ORNOT_",  4 },
+		{ "$_XOR_",    8 },
+		{ "$_XNOR_",   8 },
+		{ "$_AOI3_",   6 },
+		{ "$_OAI3_",   6 },
+		{ "$_AOI4_",   8 },
+		{ "$_OAI4_",   8 },
+		{ "$_MUX_",    4 }
+	};
+
+	if (gate_cost.count(type))
+		return gate_cost.at(type);
+
+	if (parameters.empty() && design && design->module(type))
+	{
+		RTLIL::Module *mod = design->module(type);
+
+		if (mod->attributes.count("\\cost"))
+			return mod->attributes.at("\\cost").as_int();
+
+		dict<RTLIL::IdString, int> local_mod_cost_cache;
+		if (mod_cost_cache == nullptr)
+			mod_cost_cache = &local_mod_cost_cache;
+
+		if (mod_cost_cache->count(mod->name))
+			return mod_cost_cache->at(mod->name);
+
+		int module_cost = 1;
+		for (auto c : mod->cells())
+			module_cost += get_cell_cost(c, mod_cost_cache);
+
+		(*mod_cost_cache)[mod->name] = module_cost;
+		return module_cost;
+	}
+
+	log_warning("Can't determine cost of %s cell (%d parameters).\n", log_id(type), GetSize(parameters));
+	return 1;
+}
+
+YOSYS_NAMESPACE_END
diff --git a/kernel/cost.h b/kernel/cost.h
index e795b571b..7d7822fa0 100644
--- a/kernel/cost.h
+++ b/kernel/cost.h
@@ -27,56 +27,9 @@ YOSYS_NAMESPACE_BEGIN
 int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr);
 
 int get_cell_cost(RTLIL::IdString type, const dict<RTLIL::IdString, RTLIL::Const> &parameters = dict<RTLIL::IdString, RTLIL::Const>(),
-		RTLIL::Design *design = nullptr, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr)
-{
-	static dict<RTLIL::IdString, int> gate_cost = {
-		{ "$_BUF_",    1 },
-		{ "$_NOT_",    2 },
-		{ "$_AND_",    4 },
-		{ "$_NAND_",   4 },
-		{ "$_OR_",     4 },
-		{ "$_NOR_",    4 },
-		{ "$_ANDNOT_", 4 },
-		{ "$_ORNOT_",  4 },
-		{ "$_XOR_",    8 },
-		{ "$_XNOR_",   8 },
-		{ "$_AOI3_",   6 },
-		{ "$_OAI3_",   6 },
-		{ "$_AOI4_",   8 },
-		{ "$_OAI4_",   8 },
-		{ "$_MUX_",    4 }
-	};
-
-	if (gate_cost.count(type))
-		return gate_cost.at(type);
-
-	if (parameters.empty() && design && design->module(type))
-	{
-		RTLIL::Module *mod = design->module(type);
-
-		if (mod->attributes.count("\\cost"))
-			return mod->attributes.at("\\cost").as_int();
-
-		dict<RTLIL::IdString, int> local_mod_cost_cache;
-		if (mod_cost_cache == nullptr)
-			mod_cost_cache = &local_mod_cost_cache;
-
-		if (mod_cost_cache->count(mod->name))
-			return mod_cost_cache->at(mod->name);
-
-		int module_cost = 1;
-		for (auto c : mod->cells())
-			module_cost += get_cell_cost(c, mod_cost_cache);
-
-		(*mod_cost_cache)[mod->name] = module_cost;
-		return module_cost;
-	}
-
-	log_warning("Can't determine cost of %s cell (%d parameters).\n", log_id(type), GetSize(parameters));
-	return 1;
-}
+		RTLIL::Design *design = nullptr, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr);
 
-int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache)
+inline int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache)
 {
 	return get_cell_cost(cell->type, cell->parameters, cell->module->design, mod_cost_cache);
 }
-- 
2.30.2