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read_verilog: add -relativeshare for synthesis reproducibility testing

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This commit is contained in:
Emil J. Tywoniak 2025-09-03 01:57:17 +02:00
parent 6c4d00ca7a
commit f8630d0777
5 changed files with 51 additions and 11 deletions
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17
frontends/verilog/verilog_frontend.cc
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@ -229,6 +229,10 @@ struct VerilogFrontend : public Frontend {
log(" add 'dir' to the directories which are used when searching include\n");
log(" files\n");
log("\n");
log(" -relativeshare\n");
log(" use paths relative to share directory for source locations\n");
log(" where possible (experimental).\n");
log("\n");
log("The command 'verilog_defaults' can be used to register default options for\n");
log("subsequent calls to 'read_verilog'.\n");
log("\n");
@ -273,6 +277,7 @@ struct VerilogFrontend : public Frontend {
bool flag_nowb = false;
bool flag_nosynthesis = false;
bool flag_yydebug = false;
bool flag_relative_share = false;
define_map_t defines_map;
std::list<std::string> include_dirs;
@ -450,6 +455,11 @@ struct VerilogFrontend : public Frontend {
attributes.push_back(RTLIL::escape_id(args[++argidx]));
continue;
}
if (arg == "-relativeshare") {
flag_relative_share = true;
log_experimental("read_verilog -relativeshare");
continue;
}
if (arg == "-D" && argidx+1 < args.size()) {
std::string name = args[++argidx], value;
size_t equal = name.find('=');
@ -490,6 +500,13 @@ struct VerilogFrontend : public Frontend {
log("Parsing %s%s input from `%s' to AST representation.\n",
parse_mode.formal ? "formal " : "", parse_mode.sv ? "SystemVerilog" : "Verilog", filename.c_str());
log("verilog frontend filename %s\n", filename.c_str());
if (flag_relative_share) {
auto share_path = proc_share_dirname();
if (filename.substr(0, share_path.length()) == share_path)
filename = std::string("+/") + filename.substr(share_path.length());
log("new filename %s\n", filename.c_str());
}
AST::sv_mode_but_global_and_used_for_literally_one_condition = parse_mode.sv;
std::string code_after_preproc;