diff --git a/kernel/driver.cc b/kernel/driver.cc
index 7fc81f589..acbf6b55d 100644
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -295,6 +295,9 @@ int main(int argc, char **argv)
printf(" -E <depsfile>\n");
printf(" write a Makefile dependencies file with in- and output file names\n");
printf("\n");
+ printf(" -x <feature>\n");
+ printf(" do not print warnings for the specified experimental feature\n");
+ printf("\n");
printf(" -g\n");
printf(" globally enable debug log messages\n");
printf("\n");
@@ -324,7 +327,7 @@ int main(int argc, char **argv)
}
int opt;
- while ((opt = getopt(argc, argv, "MXAQTVSgm:f:Hh:b:o:p:l:L:qv:tds:c:W:w:e:D:P:E:")) != -1)
+ while ((opt = getopt(argc, argv, "MXAQTVSgm:f:Hh:b:o:p:l:L:qv:tds:c:W:w:e:D:P:E:x:")) != -1)
{
switch (opt)
{
@@ -455,6 +458,9 @@ int main(int argc, char **argv)
case 'E':
depsfile = optarg;
break;
+ case 'x':
+ log_experimentals.insert(optarg);
+ break;
default:
fprintf(stderr, "Run '%s -h' for help.\n", argv[0]);
exit(1);
diff --git a/kernel/log.cc b/kernel/log.cc
index c5ba0d10d..0ecf59c33 100644
--- a/kernel/log.cc
+++ b/kernel/log.cc
@@ -42,7 +42,7 @@ std::vector<FILE*> log_files;
std::vector<std::ostream*> log_streams;
std::map<std::string, std::set<std::string>> log_hdump;
std::vector<std::regex> log_warn_regexes, log_nowarn_regexes, log_werror_regexes;
-std::set<std::string> log_warnings;
+std::set<std::string> log_warnings, log_experimentals;
int log_warnings_count = 0;
bool log_hdump_all = false;
FILE *log_errfile = NULL;
@@ -377,6 +377,19 @@ void log_warning(const char *format, ...)
va_end(ap);
}
+void log_experimental(const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format);
+ string s = vstringf(format, ap);
+ va_end(ap);
+
+ if (log_experimentals.count(s) == 0) {
+ log_warning("Feature '%s' is experimental.\n", s.c_str());
+ log_experimentals.insert(s);
+ }
+}
+
void log_warning_noprefix(const char *format, ...)
{
va_list ap;
diff --git a/kernel/log.h b/kernel/log.h
index 1f15f3459..be70f4d9d 100644
--- a/kernel/log.h
+++ b/kernel/log.h
@@ -50,7 +50,7 @@ extern std::vector<FILE*> log_files;
extern std::vector<std::ostream*> log_streams;
extern std::map<std::string, std::set<std::string>> log_hdump;
extern std::vector<std::regex> log_warn_regexes, log_nowarn_regexes, log_werror_regexes;
-extern std::set<std::string> log_warnings;
+extern std::set<std::string> log_warnings, log_experimentals;
extern int log_warnings_count;
extern bool log_hdump_all;
extern FILE *log_errfile;
@@ -77,6 +77,7 @@ YS_NORETURN void logv_error(const char *format, va_list ap) YS_ATTRIBUTE(noretur
void log(const char *format, ...) YS_ATTRIBUTE(format(printf, 1, 2));
void log_header(RTLIL::Design *design, const char *format, ...) YS_ATTRIBUTE(format(printf, 2, 3));
void log_warning(const char *format, ...) YS_ATTRIBUTE(format(printf, 1, 2));
+void log_experimental(const char *format, ...) YS_ATTRIBUTE(format(printf, 1, 2));
// Log with filename to report a problem in a source file.
void log_file_warning(const std::string &filename, int lineno, const char *format, ...) YS_ATTRIBUTE(format(printf, 3, 4));
diff --git a/kernel/register.cc b/kernel/register.cc
index 5d0fb3c8c..e59d59654 100644
--- a/kernel/register.cc
+++ b/kernel/register.cc
@@ -304,6 +304,9 @@ void Pass::call(RTLIL::Design *design, std::vector<std::string> args)
if (pass_register.count(args[0]) == 0)
log_cmd_error("No such command: %s (type 'help' for a command overview)\n", args[0].c_str());
+ if (pass_register[args[0]]->experimental_flag)
+ log_experimental("%s", args[0].c_str());
+
size_t orig_sel_stack_pos = design->selection_stack.size();
auto state = pass_register[args[0]]->pre_execute();
pass_register[args[0]]->execute(args, design);
@@ -824,6 +827,11 @@ struct HelpPass : public Pass {
log("=");
log("\n");
it.second->help();
+ if (it.second->experimental_flag) {
+ log("\n");
+ log("WARNING: THE '%s' COMMAND IS EXPERIMENTAL.\n", it.first.c_str());
+ log("\n");
+ }
}
}
else if (args[1] == "-cells") {
@@ -846,6 +854,11 @@ struct HelpPass : public Pass {
std::ostringstream buf;
log_streams.push_back(&buf);
it.second->help();
+ if (it.second->experimental_flag) {
+ log("\n");
+ log("WARNING: THE '%s' COMMAND IS EXPERIMENTAL.\n", it.first.c_str());
+ log("\n");
+ }
log_streams.pop_back();
write_tex(f, it.first, it.second->short_help, buf.str());
}
@@ -858,6 +871,11 @@ struct HelpPass : public Pass {
std::ostringstream buf;
log_streams.push_back(&buf);
it.second->help();
+ if (it.second->experimental_flag) {
+ log("\n");
+ log("WARNING: THE '%s' COMMAND IS EXPERIMENTAL.\n", it.first.c_str());
+ log("\n");
+ }
log_streams.pop_back();
write_html(f, it.first, it.second->short_help, buf.str());
}
@@ -865,6 +883,11 @@ struct HelpPass : public Pass {
}
else if (pass_register.count(args[1])) {
pass_register.at(args[1])->help();
+ if (pass_register.at(args[1])->experimental_flag) {
+ log("\n");
+ log("WARNING: THE '%s' COMMAND IS EXPERIMENTAL.\n", args[1].c_str());
+ log("\n");
+ }
}
else if (cell_help_messages.cell_help.count(args[1])) {
log("%s", cell_help_messages.cell_help.at(args[1]).c_str());
diff --git a/kernel/register.h b/kernel/register.h
index 821faff3e..4622845b6 100644
--- a/kernel/register.h
+++ b/kernel/register.h
@@ -36,6 +36,11 @@ struct Pass
int call_counter;
int64_t runtime_ns;
+ bool experimental_flag = false;
+
+ void experimental() {
+ experimental_flag = true;
+ }
struct pre_post_exec_state_t {
Pass *parent_pass;
diff --git a/techlibs/intel/synth_intel.cc b/techlibs/intel/synth_intel.cc
index 2ebb8bf50..3689df70e 100644
--- a/techlibs/intel/synth_intel.cc
+++ b/techlibs/intel/synth_intel.cc
@@ -26,7 +26,7 @@ USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct SynthIntelPass : public ScriptPass {
- SynthIntelPass() : ScriptPass("synth_intel", "synthesis for Intel (Altera) FPGAs.") {}
+ SynthIntelPass() : ScriptPass("synth_intel", "synthesis for Intel (Altera) FPGAs.") { experimental(); }
void help() YS_OVERRIDE
{