Represent string constants as strings

backends/blif/blif.cc

@@ -387,7 +387,7 @@ struct BlifDumper
 				auto &inputs = cell->getPort(ID::A);
 				auto width = cell->parameters.at(ID::WIDTH).as_int();
 				auto depth = cell->parameters.at(ID::DEPTH).as_int();
-				vector<State> table = cell->parameters.at(ID::TABLE).bits;
+				vector<State> table = cell->parameters.at(ID::TABLE).to_bits();
 				while (GetSize(table) < 2*width*depth)
 					table.push_back(State::S0);
 				log_assert(inputs.size() == width);

backends/btor/btor.cc

@@ -711,9 +711,9 @@ struct BtorWorker
 			Const initval;
 			for (int i = 0; i < GetSize(sig_q); i++)
 				if (initbits.count(sig_q[i]))
-					initval.bits.push_back(initbits.at(sig_q[i]) ? State::S1 : State::S0);
+					initval.bits().push_back(initbits.at(sig_q[i]) ? State::S1 : State::S0);
 				else
-					initval.bits.push_back(State::Sx);
+					initval.bits().push_back(State::Sx);
 
 			int nid_init_val = -1;
 
@@ -1042,7 +1042,7 @@ struct BtorWorker
 						Const c(bit.data);
 
 						while (i+GetSize(c) < GetSize(sig) && sig[i+GetSize(c)].wire == nullptr)
-							c.bits.push_back(sig[i+GetSize(c)].data);
+							c.bits().push_back(sig[i+GetSize(c)].data);
 
 						if (consts.count(c) == 0) {
 							int sid = get_bv_sid(GetSize(c));

backends/cxxrtl/cxxrtl_backend.cc

@@ -328,7 +328,7 @@ struct FlowGraph {
 					node_comb_defs[node].insert(chunk.wire);
 				}
 			}
-		for (auto bit : sig.bits())
+		for (auto bit : sig)
 			bit_has_state[bit] |= is_ff;
 		// Only comb defs of an entire wire in the right order can be inlined.
 		if (!is_ff && sig.is_wire()) {
@@ -864,7 +864,7 @@ struct CxxrtlWorker {
 		if (!module->has_attribute(ID(cxxrtl_template)))
 			return {};
 
-		if (module->attributes.at(ID(cxxrtl_template)).flags != RTLIL::CONST_FLAG_STRING)
+		if (!(module->attributes.at(ID(cxxrtl_template)).flags & RTLIL::CONST_FLAG_STRING))
 			log_cmd_error("Attribute `cxxrtl_template' of module `%s' is not a string.\n", log_id(module));
 
 		std::vector<std::string> param_names = split_by(module->get_string_attribute(ID(cxxrtl_template)), " \t");
@@ -1665,15 +1665,15 @@ struct CxxrtlWorker {
 							switch (bit) {
 								case RTLIL::S0:
 								case RTLIL::S1:
-									compare_mask.bits.push_back(RTLIL::S1);
-									compare_value.bits.push_back(bit);
+									compare_mask.bits().push_back(RTLIL::S1);
+									compare_value.bits().push_back(bit);
 									break;
 
 								case RTLIL::Sx:
 								case RTLIL::Sz:
 								case RTLIL::Sa:
-									compare_mask.bits.push_back(RTLIL::S0);
-									compare_value.bits.push_back(RTLIL::S0);
+									compare_mask.bits().push_back(RTLIL::S0);
+									compare_value.bits().push_back(RTLIL::S0);
 									break;
 
 								default:
@@ -3028,7 +3028,7 @@ struct CxxrtlWorker {
 								if (init == RTLIL::Const()) {
 									init = RTLIL::Const(State::Sx, GetSize(bit.wire));
 								}
-								init[bit.offset] = port.init_value[i];
+								init.bits()[bit.offset] = port.init_value[i];
 							}
 						}
 					}

backends/cxxrtl/runtime/cxxrtl/cxxrtl.h

@@ -750,7 +750,7 @@ std::ostream &operator<<(std::ostream &os, const value<Bits> &val) {
 	auto old_flags = os.flags(std::ios::right);
 	auto old_width = os.width(0);
 	auto old_fill  = os.fill('0');
-	os << val.bits << '\'' << std::hex;
+	os << val << '\'' << std::hex;
 	for (size_t n = val.chunks - 1; n != (size_t)-1; n--) {
 		if (n == val.chunks - 1 && Bits % value<Bits>::chunk::bits != 0)
 			os.width((Bits % value<Bits>::chunk::bits + 3) / 4);

backends/edif/edif.cc

@@ -334,20 +334,20 @@ struct EdifBackend : public Backend {
 		auto add_prop = [&](IdString name, Const val) {
 			if ((val.flags & RTLIL::CONST_FLAG_STRING) != 0)
 				*f << stringf("\n            (property %s (string \"%s\"))", EDIF_DEF(name), val.decode_string().c_str());
-			else if (val.bits.size() <= 32 && RTLIL::SigSpec(val).is_fully_def())
+			else if (val.size() <= 32 && RTLIL::SigSpec(val).is_fully_def())
 				*f << stringf("\n            (property %s (integer %u))", EDIF_DEF(name), val.as_int());
 			else {
 				std::string hex_string = "";
-				for (size_t i = 0; i < val.bits.size(); i += 4) {
+				for (size_t i = 0; i < val.size(); i += 4) {
 					int digit_value = 0;
-					if (i+0 < val.bits.size() && val.bits.at(i+0) == RTLIL::State::S1) digit_value |= 1;
-					if (i+1 < val.bits.size() && val.bits.at(i+1) == RTLIL::State::S1) digit_value |= 2;
-					if (i+2 < val.bits.size() && val.bits.at(i+2) == RTLIL::State::S1) digit_value |= 4;
-					if (i+3 < val.bits.size() && val.bits.at(i+3) == RTLIL::State::S1) digit_value |= 8;
+					if (i+0 < val.size() && val.at(i+0) == RTLIL::State::S1) digit_value |= 1;
+					if (i+1 < val.size() && val.at(i+1) == RTLIL::State::S1) digit_value |= 2;
+					if (i+2 < val.size() && val.at(i+2) == RTLIL::State::S1) digit_value |= 4;
+					if (i+3 < val.size() && val.at(i+3) == RTLIL::State::S1) digit_value |= 8;
 					char digit_str[2] = { "0123456789abcdef"[digit_value], 0 };
 					hex_string = std::string(digit_str) + hex_string;
 				}
-				*f << stringf("\n            (property %s (string \"%d'h%s\"))", EDIF_DEF(name), GetSize(val.bits), hex_string.c_str());
+				*f << stringf("\n            (property %s (string \"%d'h%s\"))", EDIF_DEF(name), GetSize(val), hex_string.c_str());
 			}
 		};
 		for (auto module : sorted_modules)

backends/firrtl/firrtl.cc

@@ -149,7 +149,7 @@ std::string dump_const(const RTLIL::Const &data)
 	// Numeric (non-real) parameter.
 	else
 	{
-		int width = data.bits.size();
+		int width = data.size();
 
 		// If a standard 32-bit int, then emit standard int value like "56" or
 		// "-56". Firrtl supports negative-valued int literals.
@@ -163,7 +163,7 @@ std::string dump_const(const RTLIL::Const &data)
 
 			for (int i = 0; i < width; i++)
 			{
-				switch (data.bits[i])
+				switch (data[i])
 				{
 					case State::S0:                      break;
 					case State::S1: int_val |= (1 << i); break;
@@ -205,7 +205,7 @@ std::string dump_const(const RTLIL::Const &data)
 			for (int i = width - 1; i >= 0; i--)
 			{
 				log_assert(i < width);
-				switch (data.bits[i])
+				switch (data[i])
 				{
 					case State::S0: res_str += "0"; break;
 					case State::S1: res_str += "1"; break;

backends/intersynth/intersynth.cc

@@ -176,11 +176,11 @@ struct IntersynthBackend : public Backend {
 					}
 				}
 				for (auto &param : cell->parameters) {
-					celltype_code += stringf(" cfg:%d %s", int(param.second.bits.size()), log_id(param.first));
-					if (param.second.bits.size() != 32) {
+					celltype_code += stringf(" cfg:%d %s", int(param.second.size()), log_id(param.first));
+					if (param.second.size() != 32) {
 						node_code += stringf(" %s '", log_id(param.first));
-						for (int i = param.second.bits.size()-1; i >= 0; i--)
-							node_code += param.second.bits[i] == State::S1 ? "1" : "0";
+						for (int i = param.second.size()-1; i >= 0; i--)
+							node_code += param.second[i] == State::S1 ? "1" : "0";
 					} else
 						node_code += stringf(" %s 0x%x", log_id(param.first), param.second.as_int());
 				}

backends/rtlil/rtlil_backend.cc

@@ -33,13 +33,13 @@ YOSYS_NAMESPACE_BEGIN
 void RTLIL_BACKEND::dump_const(std::ostream &f, const RTLIL::Const &data, int width, int offset, bool autoint)
 {
 	if (width < 0)
-		width = data.bits.size() - offset;
-	if ((data.flags & RTLIL::CONST_FLAG_STRING) == 0 || width != (int)data.bits.size()) {
+		width = data.size() - offset;
+	if ((data.flags & RTLIL::CONST_FLAG_STRING) == 0 || width != (int)data.size()) {
 		if (width == 32 && autoint) {
 			int32_t val = 0;
 			for (int i = 0; i < width; i++) {
-				log_assert(offset+i < (int)data.bits.size());
-				switch (data.bits[offset+i]) {
+				log_assert(offset+i < (int)data.size());
+				switch (data[offset+i]) {
 				case State::S0: break;
 				case State::S1: val |= 1 << i; break;
 				default: val = -1; break;
@@ -58,8 +58,8 @@ void RTLIL_BACKEND::dump_const(std::ostream &f, const RTLIL::Const &data, int wi
 			f << "x";
 		} else {
 			for (int i = offset+width-1; i >= offset; i--) {
-				log_assert(i < (int)data.bits.size());
-				switch (data.bits[i]) {
+				log_assert(i < (int)data.size());
+				switch (data[i]) {
 				case State::S0: f << stringf("0"); break;
 				case State::S1: f << stringf("1"); break;
 				case RTLIL::Sx: f << stringf("x"); break;

backends/simplec/simplec.cc

@@ -657,7 +657,7 @@ struct SimplecWorker
 			{
 				SigSpec sig = sigmaps.at(module)(w);
 				Const val = w->attributes.at(ID::init);
-				val.bits.resize(GetSize(sig), State::Sx);
+				val.bits().resize(GetSize(sig), State::Sx);
 
 				for (int i = 0; i < GetSize(sig); i++)
 					if (val[i] == State::S0 || val[i] == State::S1) {

backends/smt2/smt2.cc

@@ -1077,14 +1077,14 @@ struct Smt2Worker
 
 				RTLIL::SigSpec sig = sigmap(wire);
 				Const val = wire->attributes.at(ID::init);
-				val.bits.resize(GetSize(sig), State::Sx);
+				val.bits().resize(GetSize(sig), State::Sx);
 				if (bvmode && GetSize(sig) > 1) {
 					Const mask(State::S1, GetSize(sig));
 					bool use_mask = false;
 					for (int i = 0; i < GetSize(sig); i++)
 						if (val[i] != State::S0 && val[i] != State::S1) {
-							val[i] = State::S0;
-							mask[i] = State::S0;
+							val.bits()[i] = State::S0;
+							mask.bits()[i] = State::S0;
 							use_mask = true;
 						}
 					if (use_mask)
@@ -1359,10 +1359,10 @@ struct Smt2Worker
 					for (int k = 0; k < GetSize(initword); k++) {
 						if (initword[k] == State::S0 || initword[k] == State::S1) {
 							gen_init_constr = true;
-							initmask[k] = State::S1;
+							initmask.bits()[k] = State::S1;
 						} else {
-							initmask[k] = State::S0;
-							initword[k] = State::S0;
+							initmask.bits()[k] = State::S0;
+							initword.bits()[k] = State::S0;
 						}
 					}
 

backends/verilog/verilog_backend.cc

@@ -191,22 +191,22 @@ void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int o
 {
 	bool set_signed = (data.flags & RTLIL::CONST_FLAG_SIGNED) != 0;
 	if (width < 0)
-		width = data.bits.size() - offset;
+		width = data.size() - offset;
 	if (width == 0) {
 		// See IEEE 1364-2005 Clause 5.1.14.
 		f << "{0{1'b0}}";
 		return;
 	}
 	if (nostr)
 		goto dump_hex;
-	if ((data.flags & RTLIL::CONST_FLAG_STRING) == 0 || width != (int)data.bits.size()) {
+	if ((data.flags & RTLIL::CONST_FLAG_STRING) == 0 || width != (int)data.size()) {
 		if (width == 32 && !no_decimal && !nodec) {
 			int32_t val = 0;
 			for (int i = offset+width-1; i >= offset; i--) {
-				log_assert(i < (int)data.bits.size());
-				if (data.bits[i] != State::S0 && data.bits[i] != State::S1)
+				log_assert(i < (int)data.size());
+				if (data[i] != State::S0 && data[i] != State::S1)
 					goto dump_hex;
-				if (data.bits[i] == State::S1)
+				if (data[i] == State::S1)
 					val |= 1 << (i - offset);
 			}
 			if (decimal)
@@ -221,8 +221,8 @@ void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int o
 				goto dump_bin;
 			vector<char> bin_digits, hex_digits;
 			for (int i = offset; i < offset+width; i++) {
-				log_assert(i < (int)data.bits.size());
-				switch (data.bits[i]) {
+				log_assert(i < (int)data.size());
+				switch (data[i]) {
 				case State::S0: bin_digits.push_back('0'); break;
 				case State::S1: bin_digits.push_back('1'); break;
 				case RTLIL::Sx: bin_digits.push_back('x'); break;
@@ -275,8 +275,8 @@ void dump_const(std::ostream &f, const RTLIL::Const &data, int width = -1, int o
 			if (width == 0)
 				f << stringf("0");
 			for (int i = offset+width-1; i >= offset; i--) {
-				log_assert(i < (int)data.bits.size());
-				switch (data.bits[i]) {
+				log_assert(i < (int)data.size());
+				switch (data[i]) {
 				case State::S0: f << stringf("0"); break;
 				case State::S1: f << stringf("1"); break;
 				case RTLIL::Sx: f << stringf("x"); break;
@@ -318,10 +318,10 @@ void dump_reg_init(std::ostream &f, SigSpec sig)
 
 	for (auto bit : active_sigmap(sig)) {
 		if (active_initdata.count(bit)) {
-			initval.bits.push_back(active_initdata.at(bit));
+			initval.bits().push_back(active_initdata.at(bit));
 			gotinit = true;
 		} else {
-			initval.bits.push_back(State::Sx);
+			initval.bits().push_back(State::Sx);
 		}
 	}
 
@@ -751,7 +751,7 @@ void dump_memory(std::ostream &f, std::string indent, Mem &mem)
 					if (port.wide_log2) {
 						Const addr_lo;
 						for (int i = 0; i < port.wide_log2; i++)
-							addr_lo.bits.push_back(State(sub >> i & 1));
+							addr_lo.bits().push_back(State(sub >> i & 1));
 						os << "{";
 						os << temp_id;
 						os << ", ";

frontends/aiger/aigerparse.cc

@@ -448,7 +448,7 @@ void AigerReader::parse_xaiger()
 					bool success = ce.eval(o);
 					log_assert(success);
 					log_assert(o.wire == nullptr);
-					lut_mask[gray] = o.data;
+					lut_mask.bits()[gray] = o.data;
 				}
 				RTLIL::Cell *output_cell = module->cell(stringf("$and$aiger%d$%d", aiger_autoidx, rootNodeID));
 				log_assert(output_cell);