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-rw-r--r--passes/cmds/show.cc23
-rw-r--r--passes/proc/proc_mux.cc50
-rw-r--r--passes/proc/proc_rmdead.cc18
-rw-r--r--passes/techmap/abc.cc56
-rw-r--r--passes/techmap/pmuxtree.cc4
5 files changed, 114 insertions, 37 deletions
diff --git a/passes/cmds/show.cc b/passes/cmds/show.cc
index 8b1b43f44..cf729215f 100644
--- a/passes/cmds/show.cc
+++ b/passes/cmds/show.cc
@@ -237,15 +237,34 @@ struct ShowWorker
int idx = single_idx_count++;
for (int rep, i = int(sig.chunks().size())-1; i >= 0; i -= rep) {
const RTLIL::SigChunk &c = sig.chunks().at(i);
- net = gen_signode_simple(c, false);
- log_assert(!net.empty());
+ if (!driver && c.wire == nullptr) {
+ RTLIL::State s1 = c.data.front();
+ for (auto s2 : c.data)
+ if (s1 != s2)
+ goto not_const_stream;
+ net.clear();
+ } else {
+ not_const_stream:
+ net = gen_signode_simple(c, false);
+ log_assert(!net.empty());
+ }
for (rep = 1; i-rep >= 0 && c == sig.chunks().at(i-rep); rep++) {}
std::string repinfo = rep > 1 ? stringf("%dx ", rep) : "";
if (driver) {
+ log_assert(!net.empty());
label_string += stringf("<s%d> %d:%d - %s%d:%d |", i, pos, pos-c.width+1, repinfo.c_str(), c.offset+c.width-1, c.offset);
net_conn_map[net].in.insert(stringf("x%d:s%d", idx, i));
net_conn_map[net].bits = rep*c.width;
net_conn_map[net].color = nextColor(c, net_conn_map[net].color);
+ } else
+ if (net.empty()) {
+ log_assert(rep == 1);
+ label_string += stringf("%c -&gt; %d:%d |",
+ c.data.front() == State::S0 ? '0' :
+ c.data.front() == State::S1 ? '1' :
+ c.data.front() == State::Sx ? 'X' :
+ c.data.front() == State::Sz ? 'Z' : '?',
+ pos, pos-rep*c.width+1);
} else {
label_string += stringf("<s%d> %s%d:%d - %d:%d |", i, repinfo.c_str(), c.offset+c.width-1, c.offset, pos, pos-rep*c.width+1);
net_conn_map[net].out.insert(stringf("x%d:s%d", idx, i));
diff --git a/passes/proc/proc_mux.cc b/passes/proc/proc_mux.cc
index 1329c1fef..aac0b121c 100644
--- a/passes/proc/proc_mux.cc
+++ b/passes/proc/proc_mux.cc
@@ -108,6 +108,7 @@ struct SigSnippets
struct SnippetSwCache
{
+ dict<RTLIL::SwitchRule*, pool<RTLIL::SigBit>, hash_ptr_ops> full_case_bits_cache;
dict<RTLIL::SwitchRule*, pool<int>, hash_ptr_ops> cache;
const SigSnippets *snippets;
int current_snippet;
@@ -268,6 +269,49 @@ void append_pmux(RTLIL::Module *mod, const RTLIL::SigSpec &signal, const std::ve
last_mux_cell->parameters["\\S_WIDTH"] = last_mux_cell->getPort("\\S").size();
}
+const pool<SigBit> &get_full_case_bits(SnippetSwCache &swcache, RTLIL::SwitchRule *sw)
+{
+ if (!swcache.full_case_bits_cache.count(sw))
+ {
+ pool<SigBit> bits;
+
+ if (sw->get_bool_attribute("\\full_case"))
+ {
+ bool first_case = true;
+
+ for (auto cs : sw->cases)
+ {
+ pool<SigBit> case_bits;
+
+ for (auto it : cs->actions) {
+ for (auto bit : it.first)
+ case_bits.insert(bit);
+ }
+
+ for (auto it : cs->switches) {
+ for (auto bit : get_full_case_bits(swcache, it))
+ case_bits.insert(bit);
+ }
+
+ if (first_case) {
+ first_case = false;
+ bits = case_bits;
+ } else {
+ pool<SigBit> new_bits;
+ for (auto bit : bits)
+ if (case_bits.count(bit))
+ new_bits.insert(bit);
+ bits.swap(new_bits);
+ }
+ }
+ }
+
+ bits.swap(swcache.full_case_bits_cache[sw]);
+ }
+
+ return swcache.full_case_bits_cache.at(sw);
+}
+
RTLIL::SigSpec signal_to_mux_tree(RTLIL::Module *mod, SnippetSwCache &swcache, dict<RTLIL::SwitchRule*, bool, hash_ptr_ops> &swpara,
RTLIL::CaseRule *cs, const RTLIL::SigSpec &sig, const RTLIL::SigSpec &defval, bool ifxmode)
{
@@ -337,6 +381,12 @@ RTLIL::SigSpec signal_to_mux_tree(RTLIL::Module *mod, SnippetSwCache &swcache, d
}
}
+ // mask default bits that are irrelevant because the output is driven by a full case
+ const pool<SigBit> &full_case_bits = get_full_case_bits(swcache, sw);
+ for (int i = 0; i < GetSize(sig); i++)
+ if (full_case_bits.count(sig[i]))
+ result[i] = State::Sx;
+
// evaluate in reverse order to give the first entry the top priority
RTLIL::SigSpec initial_val = result;
RTLIL::Cell *last_mux_cell = NULL;
diff --git a/passes/proc/proc_rmdead.cc b/passes/proc/proc_rmdead.cc
index 7c334e661..4f40be446 100644
--- a/passes/proc/proc_rmdead.cc
+++ b/passes/proc/proc_rmdead.cc
@@ -28,7 +28,7 @@
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
-void proc_rmdead(RTLIL::SwitchRule *sw, int &counter)
+void proc_rmdead(RTLIL::SwitchRule *sw, int &counter, int &full_case_counter)
{
BitPatternPool pool(sw->signal);
@@ -56,11 +56,16 @@ void proc_rmdead(RTLIL::SwitchRule *sw, int &counter)
}
for (auto switch_it : sw->cases[i]->switches)
- proc_rmdead(switch_it, counter);
+ proc_rmdead(switch_it, counter, full_case_counter);
if (is_default)
pool.take_all();
}
+
+ if (pool.empty() && !sw->get_bool_attribute("\\full_case")) {
+ sw->set_bool_attribute("\\full_case");
+ full_case_counter++;
+ }
}
struct ProcRmdeadPass : public Pass {
@@ -87,12 +92,15 @@ struct ProcRmdeadPass : public Pass {
for (auto &proc_it : mod->processes) {
if (!design->selected(mod, proc_it.second))
continue;
- int counter = 0;
+ int counter = 0, full_case_counter = 0;
for (auto switch_it : proc_it.second->root_case.switches)
- proc_rmdead(switch_it, counter);
+ proc_rmdead(switch_it, counter, full_case_counter);
if (counter > 0)
log("Removed %d dead cases from process %s in module %s.\n", counter,
- proc_it.first.c_str(), log_id(mod));
+ log_id(proc_it.first), log_id(mod));
+ if (full_case_counter > 0)
+ log("Marked %d switch rules as full_case in process %s in module %s.\n",
+ full_case_counter, log_id(proc_it.first), log_id(mod));
total_counter += counter;
}
}
diff --git a/passes/techmap/abc.cc b/passes/techmap/abc.cc
index 21b70f492..547115459 100644
--- a/passes/techmap/abc.cc
+++ b/passes/techmap/abc.cc
@@ -29,17 +29,17 @@
// Kahn, Arthur B. (1962), "Topological sorting of large networks", Communications of the ACM 5 (11): 558-562, doi:10.1145/368996.369025
// http://en.wikipedia.org/wiki/Topological_sorting
-#define ABC_COMMAND_LIB "strash; ifraig; scorr; dc2; dretime; strash; &get -n; &dch -f; &nf {D}; &put"
-#define ABC_COMMAND_CTR "strash; ifraig; scorr; dc2; dretime; strash; &get -n; &dch -f; &nf {D}; &put; buffer; upsize {D}; dnsize {D}; stime -p"
-#define ABC_COMMAND_LUT "strash; ifraig; scorr; dc2; dretime; strash; dch -f; if; mfs2"
-#define ABC_COMMAND_SOP "strash; ifraig; scorr; dc2; dretime; strash; dch -f; cover {I} {P}"
-#define ABC_COMMAND_DFL "strash; ifraig; scorr; dc2; dretime; strash; &get -n; &dch -f; &nf {D}; &put"
-
-#define ABC_FAST_COMMAND_LIB "strash; dretime; map {D}"
-#define ABC_FAST_COMMAND_CTR "strash; dretime; map {D}; buffer; upsize {D}; dnsize {D}; stime -p"
-#define ABC_FAST_COMMAND_LUT "strash; dretime; if"
-#define ABC_FAST_COMMAND_SOP "strash; dretime; cover -I {I} -P {P}"
-#define ABC_FAST_COMMAND_DFL "strash; dretime; map"
+#define ABC_COMMAND_LIB "strash; ifraig; scorr; dc2; dretime; retime {D}; strash; &get -n; &dch -f; &nf {D}; &put"
+#define ABC_COMMAND_CTR "strash; ifraig; scorr; dc2; dretime; retime {D}; strash; &get -n; &dch -f; &nf {D}; &put; buffer; upsize {D}; dnsize {D}; stime -p"
+#define ABC_COMMAND_LUT "strash; ifraig; scorr; dc2; dretime; retime {D}; strash; dch -f; if; mfs2"
+#define ABC_COMMAND_SOP "strash; ifraig; scorr; dc2; dretime; retime {D}; strash; dch -f; cover {I} {P}"
+#define ABC_COMMAND_DFL "strash; ifraig; scorr; dc2; dretime; retime {D}; strash; &get -n; &dch -f; &nf {D}; &put"
+
+#define ABC_FAST_COMMAND_LIB "strash; dretime; retime {D}; map {D}"
+#define ABC_FAST_COMMAND_CTR "strash; dretime; retime {D}; map {D}; buffer; upsize {D}; dnsize {D}; stime -p"
+#define ABC_FAST_COMMAND_LUT "strash; dretime; retime {D}; if"
+#define ABC_FAST_COMMAND_SOP "strash; dretime; retime {D}; cover -I {I} -P {P}"
+#define ABC_FAST_COMMAND_DFL "strash; dretime; retime {D}; map"
#include "kernel/register.h"
#include "kernel/sigtools.h"
@@ -331,19 +331,23 @@ std::string remap_name(RTLIL::IdString abc_name, RTLIL::Wire **orig_wire = nullp
{
std::string abc_sname = abc_name.substr(1);
if (abc_sname.substr(0, 5) == "ys__n") {
- int sid = std::stoi(abc_sname.substr(5));
bool inv = abc_sname.back() == 'v';
- for (auto sig : signal_list) {
- if (sig.id == sid && sig.bit.wire != nullptr) {
- std::stringstream sstr;
- sstr << "$abc$" << map_autoidx << "$" << sig.bit.wire->name.substr(1);
- if (sig.bit.wire->width != 1)
- sstr << "[" << sig.bit.offset << "]";
- if (inv)
- sstr << "_inv";
- if (orig_wire != nullptr)
- *orig_wire = sig.bit.wire;
- return sstr.str();
+ if (inv) abc_sname.pop_back();
+ abc_sname.erase(0, 5);
+ if (abc_sname.find_last_not_of("012345689") == std::string::npos) {
+ int sid = std::stoi(abc_sname);
+ for (auto sig : signal_list) {
+ if (sig.id == sid && sig.bit.wire != nullptr) {
+ std::stringstream sstr;
+ sstr << "$abc$" << map_autoidx << "$" << sig.bit.wire->name.substr(1);
+ if (sig.bit.wire->width != 1)
+ sstr << "[" << sig.bit.offset << "]";
+ if (inv)
+ sstr << "_inv";
+ if (orig_wire != nullptr)
+ *orig_wire = sig.bit.wire;
+ return sstr.str();
+ }
}
}
}
@@ -731,10 +735,6 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
else
abc_script += fast_mode ? ABC_FAST_COMMAND_DFL : ABC_COMMAND_DFL;
- if (script_file.empty() && !delay_target.empty())
- for (size_t pos = abc_script.find("dretime;"); pos != std::string::npos; pos = abc_script.find("dretime;", pos+1))
- abc_script = abc_script.substr(0, pos) + "dretime; retime -o {D};" + abc_script.substr(pos+8);
-
for (size_t pos = abc_script.find("{D}"); pos != std::string::npos; pos = abc_script.find("{D}", pos))
abc_script = abc_script.substr(0, pos) + delay_target + abc_script.substr(pos+3);
@@ -1726,7 +1726,7 @@ struct AbcPass : public Pass {
signal_init[initsig[i]] = State::S0;
break;
case State::S1:
- signal_init[initsig[i]] = State::S0;
+ signal_init[initsig[i]] = State::S1;
break;
default:
break;
diff --git a/passes/techmap/pmuxtree.cc b/passes/techmap/pmuxtree.cc
index b7a22dc3b..6a923f481 100644
--- a/passes/techmap/pmuxtree.cc
+++ b/passes/techmap/pmuxtree.cc
@@ -71,9 +71,9 @@ struct PmuxtreePass : public Pass {
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
- log(" pmuxtree [options] [selection]\n");
+ log(" pmuxtree [selection]\n");
log("\n");
- log("This pass transforms $pmux cells to a trees of $mux cells.\n");
+ log("This pass transforms $pmux cells to trees of $mux cells.\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-08 02:34:58 +0000