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Add pmgen "generate" feature

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2019-08-16 13:26:36 +02:00
parent 4a57b7e1ab
commit c710df181c
3 changed files with 208 additions and 13 deletions
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142
passes/pmgen/test_pmgen.cc
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@ -23,7 +23,12 @@
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
// for peepopt_pm
bool did_something;
#include "passes/pmgen/test_pmgen_pm.h"
#include "passes/pmgen/ice40_dsp_pm.h"
#include "passes/pmgen/peepopt_pm.h"
void reduce_chain(test_pmgen_pm &pm)
{
@ -94,6 +99,100 @@ void reduce_tree(test_pmgen_pm &pm)
log(" -> %s (%s)\n", log_id(c), log_id(c->type));
}
#define GENERATE_PATTERN(pmclass, pattern) \
generate_pattern<pmclass>([](pmclass &pm, std::function<void()> f){ return pm.run_ ## pattern(f); }, #pmclass, #pattern, design)
void pmtest_addports(Module *module)
{
pool<SigBit> driven_bits, used_bits;
SigMap sigmap(module);
int icnt = 0, ocnt = 0;
for (auto cell : module->cells())
for (auto conn : cell->connections())
{
if (cell->input(conn.first))
for (auto bit : sigmap(conn.second))
used_bits.insert(bit);
if (cell->output(conn.first))
for (auto bit : sigmap(conn.second))
driven_bits.insert(bit);
}
for (auto wire : vector<Wire*>(module->wires()))
{
SigSpec ibits, obits;
for (auto bit : sigmap(wire)) {
if (!used_bits.count(bit))
obits.append(bit);
if (!driven_bits.count(bit))
ibits.append(bit);
}
if (!ibits.empty()) {
Wire *w = module->addWire(stringf("\\i%d", icnt++), GetSize(ibits));
w->port_input = true;
module->connect(ibits, w);
}
if (!obits.empty()) {
Wire *w = module->addWire(stringf("\\o%d", ocnt++), GetSize(obits));
w->port_output = true;
module->connect(w, obits);
}
}
module->fixup_ports();
}
template <class pm>
void generate_pattern(std::function<void(pm&,std::function<void()>)> run, const char *pmclass, const char *pattern, Design *design)
{
log("Generating \"%s\" patterns for pattern matcher \"%s\".\n", pattern, pmclass);
int modcnt = 0;
while (modcnt < 100)
{
int submodcnt = 0, itercnt = 0, cellcnt = 0;
Module *mod = design->addModule(NEW_ID);
while (submodcnt < 10 && itercnt++ < 1000)
{
pm matcher(mod, mod->cells());
matcher.rng(1);
matcher.rngseed += modcnt;
matcher.rng(1);
matcher.rngseed += submodcnt;
matcher.rng(1);
matcher.rngseed += itercnt;
matcher.rng(1);
matcher.rngseed += cellcnt;
matcher.rng(1);
if (GetSize(mod->cells()) != cellcnt)
{
bool found_match = false;
run(matcher, [&](){ found_match = true; });
if (found_match) {
Module *m = design->addModule(stringf("\\pmtest_%s_%s_%05d",
pmclass, pattern, modcnt++));
mod->cloneInto(m);
pmtest_addports(m);
submodcnt++;
}
cellcnt = GetSize(mod->cells());
}
matcher.generate_mode = true;
run(matcher, [](){});
}
design->remove(mod);
}
}
struct TestPmgenPass : public Pass {
TestPmgenPass() : Pass("test_pmgen", "test pass for pmgen") { }
void help() YS_OVERRIDE
@ -104,11 +203,18 @@ struct TestPmgenPass : public Pass {
log("\n");
log("Demo for recursive pmgen patterns. Map chains of AND/OR/XOR to $reduce_*.\n");
log("\n");
log("\n");
log(" test_pmgen -reduce_tree [options] [selection]\n");
log("\n");
log("Demo for recursive pmgen patterns. Map trees of AND/OR/XOR to $reduce_*.\n");
log("\n");
log("\n");
log(" test_pmgen -generate [options] <pattern_name>\n");
log("\n");
log("Create modules that match the specified pattern.\n");
log("\n");
}
void execute_reduce_chain(std::vector<std::string> args, RTLIL::Design *design)
@ -149,6 +255,40 @@ struct TestPmgenPass : public Pass {
test_pmgen_pm(module, module->selected_cells()).run_reduce(reduce_tree);
}
void execute_generate(std::vector<std::string> args, RTLIL::Design *design)
{
log_header(design, "Executing TEST_PMGEN pass (-generate).\n");
size_t argidx;
for (argidx = 2; argidx < args.size(); argidx++)
{
// if (args[argidx] == "-singleton") {
// singleton_mode = true;
// continue;
// }
break;
}
if (argidx+1 != args.size())
log_cmd_error("Expected exactly one pattern.\n");
string pattern = args[argidx];
if (pattern == "reduce")
return GENERATE_PATTERN(test_pmgen_pm, reduce);
if (pattern == "ice40_dsp")
return GENERATE_PATTERN(ice40_dsp_pm, ice40_dsp);
if (pattern == "peepopt-muldiv")
return GENERATE_PATTERN(peepopt_pm, muldiv);
if (pattern == "peepopt-shiftmul")
return GENERATE_PATTERN(peepopt_pm, shiftmul);
log_cmd_error("Unkown pattern: %s\n", pattern.c_str());
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
{
if (GetSize(args) > 1)
@ -157,6 +297,8 @@ struct TestPmgenPass : public Pass {
return execute_reduce_chain(args, design);
if (args[1] == "-reduce_tree")
return execute_reduce_tree(args, design);
if (args[1] == "-generate")
return execute_generate(args, design);
}
log_cmd_error("Missing or unsupported mode parameter.\n");
}