document "techmap -map %<design-name>"

diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc
index 29ce96766e7b00224592cbeada94901013b26fa7..a7f91e8628a05749239207ac6198b04f89e11d6d 100644 (file)
--- a/passes/techmap/techmap.cc
+++ b/passes/techmap/techmap.cc
@@ -706,6 +706,9 @@ struct TechmapPass : public Pass {
                log("        transforms the internal RTL cells to the internal gate\n");
                log("        library.\n");
                log("\n");
+               log("    -map %%<design-name>\n");
+               log("        like -map above, but with an in-memory design instead of a file.\n");
+               log("\n");
                log("    -share_map filename\n");
                log("        like -map, but look for the file in the share directory (where the\n");
                log("        yosys data files are). this is mainly used internally when techmap\n");