diff options
Diffstat (limited to 'frontends/verilog/verilog_frontend.cc')
| -rw-r--r-- | frontends/verilog/verilog_frontend.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/frontends/verilog/verilog_frontend.cc b/frontends/verilog/verilog_frontend.cc index c70d6f30..d46dfa6e 100644 --- a/frontends/verilog/verilog_frontend.cc +++ b/frontends/verilog/verilog_frontend.cc @@ -106,6 +106,11 @@ struct VerilogFrontend : public Frontend { log(" ignore re-definitions of modules. (the default behavior is to\n"); log(" create an error message.)\n"); log("\n"); + log(" -defer\n"); + log(" only read the abstract syntax tree and defer actual compilation\n"); + log(" to a later 'hierarchy' command. Useful in cases where the default\n"); + log(" parameters of modules yield invalid or not synthesizable code.\n"); + log("\n"); log(" -setattr <attribute_name>\n"); log(" set the specified attribute (to the value 1) on all loaded modules\n"); log("\n"); @@ -135,6 +140,7 @@ struct VerilogFrontend : public Frontend { bool flag_noopt = false; bool flag_icells = false; bool flag_ignore_redef = false; + bool flag_defer = false; std::map<std::string, std::string> defines_map; std::list<std::string> include_dirs; std::list<std::string> attributes; @@ -199,6 +205,10 @@ struct VerilogFrontend : public Frontend { flag_ignore_redef = true; continue; } + if (arg == "-defer") { + flag_defer = true; + continue; + } if (arg == "-setattr" && argidx+1 < args.size()) { attributes.push_back(RTLIL::escape_id(args[++argidx])); continue; @@ -264,7 +274,7 @@ struct VerilogFrontend : public Frontend { child->attributes[attr] = AST::AstNode::mkconst_int(1, false); } - AST::process(design, current_ast, flag_dump_ast1, flag_dump_ast2, flag_dump_vlog, flag_nolatches, flag_nomem2reg, flag_mem2reg, flag_lib, flag_noopt, flag_icells, flag_ignore_redef); + AST::process(design, current_ast, flag_dump_ast1, flag_dump_ast2, flag_dump_vlog, flag_nolatches, flag_nomem2reg, flag_mem2reg, flag_lib, flag_noopt, flag_icells, flag_ignore_redef, flag_defer); if (!flag_nopp) fclose(fp); |