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-rw-r--r--backends/smt2/smt2.cc283
1 files changed, 243 insertions, 40 deletions
diff --git a/backends/smt2/smt2.cc b/backends/smt2/smt2.cc
index dce7c25de..081dcda99 100644
--- a/backends/smt2/smt2.cc
+++ b/backends/smt2/smt2.cc
@@ -32,15 +32,18 @@ struct Smt2Worker
CellTypes ct;
SigMap sigmap;
RTLIL::Module *module;
- bool bvmode, memmode, wiresmode, verbose, statebv, statedt;
+ bool bvmode, memmode, wiresmode, verbose, statebv, statedt, forallmode;
dict<IdString, int> &mod_stbv_width;
- int idcounter, statebv_width;
+ int idcounter = 0, statebv_width = 0;
std::vector<std::string> decls, trans, hier, dtmembers;
std::map<RTLIL::SigBit, RTLIL::Cell*> bit_driver;
std::set<RTLIL::Cell*> exported_cells, hiercells, hiercells_queue;
pool<Cell*> recursive_cells, registers;
+ pool<SigBit> clock_posedge, clock_negedge;
+ vector<string> ex_state_eq, ex_input_eq;
+
std::map<RTLIL::SigBit, std::pair<int, int>> fcache;
std::map<Cell*, int> memarrays;
std::map<int, int> bvsizes;
@@ -104,16 +107,24 @@ struct Smt2Worker
decls.push_back(decl_str + "\n");
}
- Smt2Worker(RTLIL::Module *module, bool bvmode, bool memmode, bool wiresmode, bool verbose, bool statebv, bool statedt, dict<IdString, int> &mod_stbv_width) :
+ Smt2Worker(RTLIL::Module *module, bool bvmode, bool memmode, bool wiresmode, bool verbose, bool statebv, bool statedt, bool forallmode,
+ dict<IdString, int> &mod_stbv_width, dict<IdString, dict<IdString, pair<bool, bool>>> &mod_clk_cache) :
ct(module->design), sigmap(module), module(module), bvmode(bvmode), memmode(memmode), wiresmode(wiresmode),
- verbose(verbose), statebv(statebv), statedt(statedt), mod_stbv_width(mod_stbv_width), idcounter(0), statebv_width(0)
+ verbose(verbose), statebv(statebv), statedt(statedt), forallmode(forallmode), mod_stbv_width(mod_stbv_width)
{
+ pool<SigBit> noclock;
+
makebits(stringf("%s_is", get_id(module)));
for (auto cell : module->cells())
- for (auto &conn : cell->connections()) {
+ for (auto &conn : cell->connections())
+ {
+ if (GetSize(conn.second) == 0)
+ continue;
+
bool is_input = ct.cell_input(cell->type, conn.first);
bool is_output = ct.cell_output(cell->type, conn.first);
+
if (is_output && !is_input)
for (auto bit : sigmap(conn.second)) {
if (bit_driver.count(bit))
@@ -123,6 +134,66 @@ struct Smt2Worker
else if (is_output || !is_input)
log_error("Unsupported or unknown directionality on port %s of cell %s.%s (%s).\n",
log_id(conn.first), log_id(module), log_id(cell), log_id(cell->type));
+
+ if (cell->type.in("$mem") && conn.first.in("\\RD_CLK", "\\WR_CLK"))
+ {
+ SigSpec clk = sigmap(conn.second);
+ for (int i = 0; i < GetSize(clk); i++)
+ {
+ if (clk[i].wire == nullptr)
+ continue;
+
+ if (cell->getParam(conn.first == "\\RD_CLK" ? "\\RD_CLK_ENABLE" : "\\WR_CLK_ENABLE")[i] != State::S1)
+ continue;
+
+ if (cell->getParam(conn.first == "\\RD_CLK" ? "\\RD_CLK_POLARITY" : "\\WR_CLK_POLARITY")[i] == State::S1)
+ clock_posedge.insert(clk[i]);
+ else
+ clock_negedge.insert(clk[i]);
+ }
+ }
+ else
+ if (cell->type.in("$dff", "$_DFF_P_", "$_DFF_N_") && conn.first.in("\\CLK", "\\C"))
+ {
+ bool posedge = (cell->type == "$_DFF_N_") || (cell->type == "$dff" && cell->getParam("\\CLK_POLARITY").as_bool());
+ for (auto bit : sigmap(conn.second)) {
+ if (posedge)
+ clock_posedge.insert(bit);
+ else
+ clock_negedge.insert(bit);
+ }
+ }
+ else
+ if (mod_clk_cache.count(cell->type) && mod_clk_cache.at(cell->type).count(conn.first))
+ {
+ for (auto bit : sigmap(conn.second)) {
+ if (mod_clk_cache.at(cell->type).at(conn.first).first)
+ clock_posedge.insert(bit);
+ if (mod_clk_cache.at(cell->type).at(conn.first).second)
+ clock_negedge.insert(bit);
+ }
+ }
+ else
+ {
+ for (auto bit : sigmap(conn.second))
+ noclock.insert(bit);
+ }
+ }
+
+ for (auto bit : noclock) {
+ clock_posedge.erase(bit);
+ clock_negedge.erase(bit);
+ }
+
+ for (auto wire : module->wires())
+ {
+ if (!wire->port_input || GetSize(wire) != 1)
+ continue;
+ SigBit bit = sigmap(wire);
+ if (clock_posedge.count(bit))
+ mod_clk_cache[module->name][wire->name].first = true;
+ if (clock_negedge.count(bit))
+ mod_clk_cache[module->name][wire->name].second = true;
}
}
@@ -326,7 +397,8 @@ struct Smt2Worker
if (type == 's' || type == 'd' || type == 'b') {
width = max(width, GetSize(cell->getPort("\\A")));
- width = max(width, GetSize(cell->getPort("\\B")));
+ if (cell->hasPort("\\B"))
+ width = max(width, GetSize(cell->getPort("\\B")));
}
if (cell->hasPort("\\A")) {
@@ -344,6 +416,7 @@ struct Smt2Worker
for (char ch : expr) {
if (ch == 'A') processed_expr += get_bv(sig_a);
else if (ch == 'B') processed_expr += get_bv(sig_b);
+ else if (ch == 'P') processed_expr += get_bv(cell->getPort("\\B"));
else if (ch == 'L') processed_expr += is_signed ? "a" : "l";
else if (ch == 'U') processed_expr += is_signed ? "s" : "u";
else processed_expr += ch;
@@ -437,6 +510,7 @@ struct Smt2Worker
if (cell->type == "$_ANDNOT_") return export_gate(cell, "(and A (not B))");
if (cell->type == "$_ORNOT_") return export_gate(cell, "(or A (not B))");
if (cell->type == "$_MUX_") return export_gate(cell, "(ite S B A)");
+ if (cell->type == "$_NMUX_") return export_gate(cell, "(not (ite S B A))");
if (cell->type == "$_AOI3_") return export_gate(cell, "(not (or (and A B) C))");
if (cell->type == "$_OAI3_") return export_gate(cell, "(not (and (or A B) C))");
if (cell->type == "$_AOI4_") return export_gate(cell, "(not (or (and A B) (and C D)))");
@@ -455,14 +529,16 @@ struct Smt2Worker
return;
}
- if (cell->type.in("$anyconst", "$anyseq"))
+ if (cell->type.in("$anyconst", "$anyseq", "$allconst", "$allseq"))
{
registers.insert(cell);
string infostr = cell->attributes.count("\\src") ? cell->attributes.at("\\src").decode_string().c_str() : get_id(cell);
if (cell->attributes.count("\\reg"))
infostr += " " + cell->attributes.at("\\reg").decode_string();
- decls.push_back(stringf("; yosys-smt2-%s %s#%d %s\n", cell->type.c_str() + 1, get_id(module), idcounter, infostr.c_str()));
+ decls.push_back(stringf("; yosys-smt2-%s %s#%d %d %s\n", cell->type.c_str() + 1, get_id(module), idcounter, GetSize(cell->getPort("\\Y")), infostr.c_str()));
makebits(stringf("%s#%d", get_id(module), idcounter), GetSize(cell->getPort("\\Y")), log_signal(cell->getPort("\\Y")));
+ if (cell->type == "$anyseq")
+ ex_input_eq.push_back(stringf(" (= (|%s#%d| state) (|%s#%d| other_state))", get_id(module), idcounter, get_id(module), idcounter));
register_bv(cell->getPort("\\Y"), idcounter++);
recursive_cells.erase(cell);
return;
@@ -480,7 +556,9 @@ struct Smt2Worker
if (cell->type.in("$shift", "$shiftx")) {
if (cell->getParam("\\B_SIGNED").as_bool()) {
- /* FIXME */
+ return export_bvop(cell, stringf("(ite (bvsge P #b%0*d) "
+ "(bvlshr A B) (bvlshr A (bvneg B)))",
+ GetSize(cell->getPort("\\B")), 0), 's');
} else {
return export_bvop(cell, "(bvlshr A B)", 's');
}
@@ -506,6 +584,13 @@ struct Smt2Worker
if (cell->type == "$div") return export_bvop(cell, "(bvUdiv A B)", 'd');
if (cell->type == "$mod") return export_bvop(cell, "(bvUrem A B)", 'd');
+ if (cell->type.in("$reduce_and", "$reduce_or", "$reduce_bool") &&
+ 2*GetSize(cell->getPort("\\A").chunks()) < GetSize(cell->getPort("\\A"))) {
+ bool is_and = cell->type == "$reduce_and";
+ string bits(GetSize(cell->getPort("\\A")), is_and ? '1' : '0');
+ return export_bvop(cell, stringf("(%s A #b%s)", is_and ? "=" : "distinct", bits.c_str()), 'b');
+ }
+
if (cell->type == "$reduce_and") return export_reduce(cell, "(and A)", true);
if (cell->type == "$reduce_or") return export_reduce(cell, "(or A)", false);
if (cell->type == "$reduce_xor") return export_reduce(cell, "(xor A)", false);
@@ -516,7 +601,7 @@ struct Smt2Worker
if (cell->type == "$logic_and") return export_reduce(cell, "(and (or A) (or B))", false);
if (cell->type == "$logic_or") return export_reduce(cell, "(or A B)", false);
- if (cell->type == "$mux" || cell->type == "$pmux")
+ if (cell->type.in("$mux", "$pmux"))
{
int width = GetSize(cell->getPort("\\Y"));
std::string processed_expr = get_bv(cell->getPort("\\A"));
@@ -554,17 +639,30 @@ struct Smt2Worker
int rd_ports = cell->getParam("\\RD_PORTS").as_int();
int wr_ports = cell->getParam("\\WR_PORTS").as_int();
- decls.push_back(stringf("; yosys-smt2-memory %s %d %d %d %d\n", get_id(cell), abits, width, rd_ports, wr_ports));
+ bool async_read = false;
+ if (!cell->getParam("\\WR_CLK_ENABLE").is_fully_ones()) {
+ if (!cell->getParam("\\WR_CLK_ENABLE").is_fully_zero())
+ log_error("Memory %s.%s has mixed clocked/nonclocked write ports. This is not supported by \"write_smt2\".\n", log_id(cell), log_id(module));
+ async_read = true;
+ }
+
+ decls.push_back(stringf("; yosys-smt2-memory %s %d %d %d %d %s\n", get_id(cell), abits, width, rd_ports, wr_ports, async_read ? "async" : "sync"));
+
+ string memstate;
+ if (async_read) {
+ memstate = stringf("%s#%d#final", get_id(module), arrayid);
+ } else {
+ memstate = stringf("%s#%d#0", get_id(module), arrayid);
+ }
if (statebv)
{
int mem_size = cell->getParam("\\SIZE").as_int();
int mem_offset = cell->getParam("\\OFFSET").as_int();
- makebits(stringf("%s#%d#0", get_id(module), arrayid), width*mem_size, get_id(cell));
-
- decls.push_back(stringf("(define-fun |%s_m %s| ((state |%s_s|)) (_ BitVec %d) (|%s#%d#0| state))\n",
- get_id(module), get_id(cell), get_id(module), width*mem_size, get_id(module), arrayid));
+ makebits(memstate, width*mem_size, get_id(cell));
+ decls.push_back(stringf("(define-fun |%s_m %s| ((state |%s_s|)) (_ BitVec %d) (|%s| state))\n",
+ get_id(module), get_id(cell), get_id(module), width*mem_size, memstate.c_str()));
for (int i = 0; i < rd_ports; i++)
{
@@ -584,9 +682,9 @@ struct Smt2Worker
read_expr += "0";
for (int k = 0; k < mem_size; k++)
- read_expr = stringf("(ite (= (|%s_m:R%dA %s| state) #b%s) ((_ extract %d %d) (|%s#%d#0| state))\n %s)",
+ read_expr = stringf("(ite (= (|%s_m:R%dA %s| state) #b%s) ((_ extract %d %d) (|%s| state))\n %s)",
get_id(module), i, get_id(cell), Const(k+mem_offset, abits).as_string().c_str(),
- width*(k+1)-1, width*k, get_id(module), arrayid, read_expr.c_str());
+ width*(k+1)-1, width*k, memstate.c_str(), read_expr.c_str());
decls.push_back(stringf("(define-fun |%s#%d| ((state |%s_s|)) (_ BitVec %d)\n %s) ; %s\n",
get_id(module), idcounter, get_id(module), width, read_expr.c_str(), log_signal(data_sig)));
@@ -600,14 +698,14 @@ struct Smt2Worker
else
{
if (statedt)
- dtmembers.push_back(stringf(" (|%s#%d#0| (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
- get_id(module), arrayid, abits, width, get_id(cell)));
+ dtmembers.push_back(stringf(" (|%s| (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
+ memstate.c_str(), abits, width, get_id(cell)));
else
- decls.push_back(stringf("(declare-fun |%s#%d#0| (|%s_s|) (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
- get_id(module), arrayid, get_id(module), abits, width, get_id(cell)));
+ decls.push_back(stringf("(declare-fun |%s| (|%s_s|) (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
+ memstate.c_str(), get_id(module), abits, width, get_id(cell)));
- decls.push_back(stringf("(define-fun |%s_m %s| ((state |%s_s|)) (Array (_ BitVec %d) (_ BitVec %d)) (|%s#%d#0| state))\n",
- get_id(module), get_id(cell), get_id(module), abits, width, get_id(module), arrayid));
+ decls.push_back(stringf("(define-fun |%s_m %s| ((state |%s_s|)) (Array (_ BitVec %d) (_ BitVec %d)) (|%s| state))\n",
+ get_id(module), get_id(cell), get_id(module), abits, width, memstate.c_str()));
for (int i = 0; i < rd_ports; i++)
{
@@ -622,8 +720,8 @@ struct Smt2Worker
decls.push_back(stringf("(define-fun |%s_m:R%dA %s| ((state |%s_s|)) (_ BitVec %d) %s) ; %s\n",
get_id(module), i, get_id(cell), get_id(module), abits, addr.c_str(), log_signal(addr_sig)));
- decls.push_back(stringf("(define-fun |%s#%d| ((state |%s_s|)) (_ BitVec %d) (select (|%s#%d#0| state) (|%s_m:R%dA %s| state))) ; %s\n",
- get_id(module), idcounter, get_id(module), width, get_id(module), arrayid, get_id(module), i, get_id(cell), log_signal(data_sig)));
+ decls.push_back(stringf("(define-fun |%s#%d| ((state |%s_s|)) (_ BitVec %d) (select (|%s| state) (|%s_m:R%dA %s| state))) ; %s\n",
+ get_id(module), idcounter, get_id(module), width, memstate.c_str(), get_id(module), i, get_id(cell), log_signal(data_sig)));
decls.push_back(stringf("(define-fun |%s_m:R%dD %s| ((state |%s_s|)) (_ BitVec %d) (|%s#%d| state))\n",
get_id(module), i, get_id(cell), get_id(module), width, get_id(module), idcounter));
@@ -646,6 +744,9 @@ struct Smt2Worker
for (auto &conn : cell->connections())
{
+ if (GetSize(conn.second) == 0)
+ continue;
+
Wire *w = m->wire(conn.first);
SigSpec sig = sigmap(conn.second);
@@ -669,7 +770,7 @@ struct Smt2Worker
if (statebv)
makebits(stringf("%s_h %s", get_id(module), get_id(cell->name)), mod_stbv_width.at(cell->type));
- if (statedt)
+ else if (statedt)
dtmembers.push_back(stringf(" (|%s_h %s| |%s_s|)\n",
get_id(module), get_id(cell->name), get_id(cell->type)));
else
@@ -713,17 +814,30 @@ struct Smt2Worker
decls.push_back(stringf("; yosys-smt2-register %s %d\n", get_id(wire), wire->width));
if (wire->get_bool_attribute("\\keep") || (wiresmode && wire->name[0] == '\\'))
decls.push_back(stringf("; yosys-smt2-wire %s %d\n", get_id(wire), wire->width));
+ if (GetSize(wire) == 1 && (clock_posedge.count(sig) || clock_negedge.count(sig)))
+ decls.push_back(stringf("; yosys-smt2-clock %s%s%s\n", get_id(wire),
+ clock_posedge.count(sig) ? " posedge" : "", clock_negedge.count(sig) ? " negedge" : ""));
if (bvmode && GetSize(sig) > 1) {
decls.push_back(stringf("(define-fun |%s_n %s| ((state |%s_s|)) (_ BitVec %d) %s)\n",
get_id(module), get_id(wire), get_id(module), GetSize(sig), get_bv(sig).c_str()));
+ if (wire->port_input)
+ ex_input_eq.push_back(stringf(" (= (|%s_n %s| state) (|%s_n %s| other_state))",
+ get_id(module), get_id(wire), get_id(module), get_id(wire)));
} else {
for (int i = 0; i < GetSize(sig); i++)
- if (GetSize(sig) > 1)
+ if (GetSize(sig) > 1) {
decls.push_back(stringf("(define-fun |%s_n %s %d| ((state |%s_s|)) Bool %s)\n",
get_id(module), get_id(wire), i, get_id(module), get_bool(sig[i]).c_str()));
- else
+ if (wire->port_input)
+ ex_input_eq.push_back(stringf(" (= (|%s_n %s %d| state) (|%s_n %s %d| other_state))",
+ get_id(module), get_id(wire), i, get_id(module), get_id(wire), i));
+ } else {
decls.push_back(stringf("(define-fun |%s_n %s| ((state |%s_s|)) Bool %s)\n",
get_id(module), get_id(wire), get_id(module), get_bool(sig[i]).c_str()));
+ if (wire->port_input)
+ ex_input_eq.push_back(stringf(" (= (|%s_n %s| state) (|%s_n %s| other_state))",
+ get_id(module), get_id(wire), get_id(module), get_id(wire)));
+ }
}
}
}
@@ -775,8 +889,8 @@ struct Smt2Worker
string name_a = get_bool(cell->getPort("\\A"));
string name_en = get_bool(cell->getPort("\\EN"));
- decls.push_back(stringf("; yosys-smt2-%s %d %s\n", cell->type.c_str() + 1, id,
- cell->attributes.count("\\src") ? cell->attributes.at("\\src").decode_string().c_str() : get_id(cell)));
+ string infostr = (cell->name[0] == '$' && cell->attributes.count("\\src")) ? cell->attributes.at("\\src").decode_string() : get_id(cell);
+ decls.push_back(stringf("; yosys-smt2-%s %d %s\n", cell->type.c_str() + 1, id, infostr.c_str()));
if (cell->type == "$cover")
decls.push_back(stringf("(define-fun |%s_%c %d| ((state |%s_s|)) Bool (and %s %s)) ; %s\n",
@@ -811,8 +925,14 @@ struct Smt2Worker
Module *m = module->design->module(cell->type);
log_assert(m != nullptr);
+ hier.push_back(stringf(" (= (|%s_is| state) (|%s_is| %s))\n",
+ get_id(module), get_id(cell->type), cell_state.c_str()));
+
for (auto &conn : cell->connections())
{
+ if (GetSize(conn.second) == 0)
+ continue;
+
Wire *w = m->wire(conn.first);
SigSpec sig = sigmap(conn.second);
@@ -842,6 +962,7 @@ struct Smt2Worker
std::string expr_d = get_bool(cell->getPort("\\D"));
std::string expr_q = get_bool(cell->getPort("\\Q"), "next_state");
trans.push_back(stringf(" (= %s %s) ; %s %s\n", expr_d.c_str(), expr_q.c_str(), get_id(cell), log_signal(cell->getPort("\\Q"))));
+ ex_state_eq.push_back(stringf("(= %s %s)", get_bool(cell->getPort("\\Q")).c_str(), get_bool(cell->getPort("\\Q"), "other_state").c_str()));
}
if (cell->type.in("$ff", "$dff"))
@@ -849,13 +970,16 @@ struct Smt2Worker
std::string expr_d = get_bv(cell->getPort("\\D"));
std::string expr_q = get_bv(cell->getPort("\\Q"), "next_state");
trans.push_back(stringf(" (= %s %s) ; %s %s\n", expr_d.c_str(), expr_q.c_str(), get_id(cell), log_signal(cell->getPort("\\Q"))));
+ ex_state_eq.push_back(stringf("(= %s %s)", get_bv(cell->getPort("\\Q")).c_str(), get_bv(cell->getPort("\\Q"), "other_state").c_str()));
}
- if (cell->type == "$anyconst")
+ if (cell->type.in("$anyconst", "$allconst"))
{
std::string expr_d = get_bv(cell->getPort("\\Y"));
std::string expr_q = get_bv(cell->getPort("\\Y"), "next_state");
trans.push_back(stringf(" (= %s %s) ; %s %s\n", expr_d.c_str(), expr_q.c_str(), get_id(cell), log_signal(cell->getPort("\\Y"))));
+ if (cell->type == "$anyconst")
+ ex_state_eq.push_back(stringf("(= %s %s)", get_bv(cell->getPort("\\Y")).c_str(), get_bv(cell->getPort("\\Y"), "other_state").c_str()));
}
if (cell->type == "$mem")
@@ -866,11 +990,25 @@ struct Smt2Worker
int width = cell->getParam("\\WIDTH").as_int();
int wr_ports = cell->getParam("\\WR_PORTS").as_int();
+ bool async_read = false;
+ string initial_memstate, final_memstate;
+
+ if (!cell->getParam("\\WR_CLK_ENABLE").is_fully_ones()) {
+ log_assert(cell->getParam("\\WR_CLK_ENABLE").is_fully_zero());
+ async_read = true;
+ initial_memstate = stringf("%s#%d#0", get_id(module), arrayid);
+ final_memstate = stringf("%s#%d#final", get_id(module), arrayid);
+ }
+
if (statebv)
{
int mem_size = cell->getParam("\\SIZE").as_int();
int mem_offset = cell->getParam("\\OFFSET").as_int();
+ if (async_read) {
+ makebits(final_memstate, width*mem_size, get_id(cell));
+ }
+
for (int i = 0; i < wr_ports; i++)
{
SigSpec addr_sig = cell->getPort("\\WR_ADDR").extract(abits*i, abits);
@@ -909,6 +1047,15 @@ struct Smt2Worker
}
else
{
+ if (async_read) {
+ if (statedt)
+ dtmembers.push_back(stringf(" (|%s| (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
+ initial_memstate.c_str(), abits, width, get_id(cell)));
+ else
+ decls.push_back(stringf("(declare-fun |%s| (|%s_s|) (Array (_ BitVec %d) (_ BitVec %d))) ; %s\n",
+ initial_memstate.c_str(), get_id(module), abits, width, get_id(cell)));
+ }
+
for (int i = 0; i < wr_ports; i++)
{
SigSpec addr_sig = cell->getPort("\\WR_ADDR").extract(abits*i, abits);
@@ -944,6 +1091,10 @@ struct Smt2Worker
std::string expr_d = stringf("(|%s#%d#%d| state)", get_id(module), arrayid, wr_ports);
std::string expr_q = stringf("(|%s#%d#0| next_state)", get_id(module), arrayid);
trans.push_back(stringf(" (= %s %s) ; %s\n", expr_d.c_str(), expr_q.c_str(), get_id(cell)));
+ ex_state_eq.push_back(stringf("(= (|%s#%d#0| state) (|%s#%d#0| other_state))", get_id(module), arrayid, get_id(module), arrayid));
+
+ if (async_read)
+ hier.push_back(stringf(" (= %s (|%s| state)) ; %s\n", expr_d.c_str(), final_memstate.c_str(), get_id(cell)));
Const init_data = cell->getParam("\\INIT");
int memsize = cell->getParam("\\SIZE").as_int();
@@ -954,20 +1105,27 @@ struct Smt2Worker
break;
Const initword = init_data.extract(i*width, width, State::Sx);
+ Const initmask = initword;
bool gen_init_constr = false;
- for (auto bit : initword.bits)
- if (bit == State::S0 || bit == State::S1)
+ 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;
+ } else {
+ initmask[k] = State::S0;
+ initword[k] = State::S0;
+ }
+ }
if (gen_init_constr)
{
if (statebv)
/* FIXME */;
else
- init_list.push_back(stringf("(= (select (|%s#%d#0| state) #b%s) #b%s) ; %s[%d]",
+ init_list.push_back(stringf("(= (bvand (select (|%s#%d#0| state) #b%s) #b%s) #b%s) ; %s[%d]",
get_id(module), arrayid, Const(i, abits).as_string().c_str(),
- initword.as_string().c_str(), get_id(cell), i));
+ initmask.as_string().c_str(), initword.as_string().c_str(), get_id(cell), i));
}
}
}
@@ -983,6 +1141,37 @@ struct Smt2Worker
hier.push_back(stringf(" (|%s_h| (|%s_h %s| state))\n", get_id(c->type), get_id(module), get_id(c->name)));
trans.push_back(stringf(" (|%s_t| (|%s_h %s| state) (|%s_h %s| next_state))\n",
get_id(c->type), get_id(module), get_id(c->name), get_id(module), get_id(c->name)));
+ ex_state_eq.push_back(stringf("(|%s_ex_state_eq| (|%s_h %s| state) (|%s_h %s| other_state))\n",
+ get_id(c->type), get_id(module), get_id(c->name), get_id(module), get_id(c->name)));
+ }
+
+ if (forallmode)
+ {
+ string expr = ex_state_eq.empty() ? "true" : "(and";
+ if (!ex_state_eq.empty()) {
+ if (GetSize(ex_state_eq) == 1) {
+ expr = "\n " + ex_state_eq.front() + "\n";
+ } else {
+ for (auto &str : ex_state_eq)
+ expr += stringf("\n %s", str.c_str());
+ expr += "\n)";
+ }
+ }
+ decls.push_back(stringf("(define-fun |%s_ex_state_eq| ((state |%s_s|) (other_state |%s_s|)) Bool %s)\n",
+ get_id(module), get_id(module), get_id(module), expr.c_str()));
+
+ expr = ex_input_eq.empty() ? "true" : "(and";
+ if (!ex_input_eq.empty()) {
+ if (GetSize(ex_input_eq) == 1) {
+ expr = "\n " + ex_input_eq.front() + "\n";
+ } else {
+ for (auto &str : ex_input_eq)
+ expr += stringf("\n %s", str.c_str());
+ expr += "\n)";
+ }
+ }
+ decls.push_back(stringf("(define-fun |%s_ex_input_eq| ((state |%s_s|) (other_state |%s_s|)) Bool %s)\n",
+ get_id(module), get_id(module), get_id(module), expr.c_str()));
}
string assert_expr = assert_list.empty() ? "true" : "(and";
@@ -1073,7 +1262,7 @@ struct Smt2Worker
struct Smt2Backend : public Backend {
Smt2Backend() : Backend("smt2", "write design to SMT-LIBv2 file") { }
- virtual void help()
+ void help() YS_OVERRIDE
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
@@ -1229,10 +1418,11 @@ struct Smt2Backend : public Backend {
log("from non-zero to zero in the test design.\n");
log("\n");
}
- virtual void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
+ void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
{
std::ifstream template_f;
bool bvmode = true, memmode = true, wiresmode = false, verbose = false, statebv = false, statedt = false;
+ bool forallmode = false;
log_header(design, "Executing SMT2 backend.\n");
@@ -1286,7 +1476,7 @@ struct Smt2Backend : public Backend {
int indent = 0;
while (indent < GetSize(line) && (line[indent] == ' ' || line[indent] == '\t'))
indent++;
- if (line.substr(indent, 2) == "%%")
+ if (line.compare(indent, 2, "%%") == 0)
break;
*f << line << std::endl;
}
@@ -1336,17 +1526,30 @@ struct Smt2Backend : public Backend {
}
dict<IdString, int> mod_stbv_width;
+ dict<IdString, dict<IdString, pair<bool, bool>>> mod_clk_cache;
Module *topmod = design->top_module();
std::string topmod_id;
for (auto module : sorted_modules)
+ for (auto cell : module->cells())
+ if (cell->type.in("$allconst", "$allseq"))
+ goto found_forall;
+ if (0) {
+ found_forall:
+ forallmode = true;
+ *f << stringf("; yosys-smt2-forall\n");
+ if (!statebv && !statedt)
+ log_error("Forall-exists problems are only supported in -stbv or -stdt mode.\n");
+ }
+
+ for (auto module : sorted_modules)
{
- if (module->get_bool_attribute("\\blackbox") || module->has_memories_warn() || module->has_processes_warn())
+ if (module->get_blackbox_attribute() || module->has_memories_warn() || module->has_processes_warn())
continue;
log("Creating SMT-LIBv2 representation of module %s.\n", log_id(module));
- Smt2Worker worker(module, bvmode, memmode, wiresmode, verbose, statebv, statedt, mod_stbv_width);
+ Smt2Worker worker(module, bvmode, memmode, wiresmode, verbose, statebv, statedt, forallmode, mod_stbv_width, mod_clk_cache);
worker.run();
worker.write(*f);
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-15 17:11:48 +0000