genrtlil: emit \src attribute on CaseRule.

diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index 079fc11e5dce10168734c2c44e277bc9cbbea6f3..571ddd98886e7c3a4fa9526d37dbd8f0926d6e7e 100644 (file)
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -504,6 +504,7 @@ struct AST_INTERNAL::ProcessGenerator
 
                                        RTLIL::CaseRule *backup_case = current_case;
                                        current_case = new RTLIL::CaseRule;
+                                       current_case->attributes["\\src"] = stringf("%s:%d", child->filename.c_str(), child->linenum);
                                        last_generated_case = current_case;
                                        addChunkActions(current_case->actions, this_case_eq_ltemp, this_case_eq_rvalue);
                                        for (auto node : child->children) {