From: Miodrag Milanovic <mmicko@gmail.com>
Date: Tue, 5 Apr 2022 12:02:37 +0000 (+0200)
Subject: Reorder steps in -auto-top to fix synth command, fixes #3261
X-Git-Tag: yosys-0.17~55^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=977002b1d2677b0bb82e3e0decec5c03c6eb69a9;p=yosys.git

Reorder steps in -auto-top to fix synth command, fixes #3261
---

diff --git a/passes/hierarchy/hierarchy.cc b/passes/hierarchy/hierarchy.cc
index 440881f19..d40d6e59f 100644
--- a/passes/hierarchy/hierarchy.cc
+++ b/passes/hierarchy/hierarchy.cc
@@ -976,6 +976,19 @@ struct HierarchyPass : public Pass {
 				if (mod->get_bool_attribute(ID::top))
 					top_mod = mod;
 
+		if (top_mod == nullptr && auto_top_mode) {
+			log_header(design, "Finding top of design hierarchy..\n");
+			dict<Module*, int> db;
+			for (Module *mod : design->selected_modules()) {
+				int score = find_top_mod_score(design, mod, db);
+				log("root of %3d design levels: %-20s\n", score, log_id(mod));
+				if (!top_mod || score > db[top_mod])
+					top_mod = mod;
+			}
+			if (top_mod != nullptr)
+				log("Automatically selected %s as design top module.\n", log_id(top_mod));
+		}
+
 		if (top_mod != nullptr && top_mod->name.begins_with("$abstract")) {
 			IdString top_name = top_mod->name.substr(strlen("$abstract"));
 
@@ -1000,19 +1013,6 @@ struct HierarchyPass : public Pass {
 			}
 		}
 
-		if (top_mod == nullptr && auto_top_mode) {
-			log_header(design, "Finding top of design hierarchy..\n");
-			dict<Module*, int> db;
-			for (Module *mod : design->selected_modules()) {
-				int score = find_top_mod_score(design, mod, db);
-				log("root of %3d design levels: %-20s\n", score, log_id(mod));
-				if (!top_mod || score > db[top_mod])
-					top_mod = mod;
-			}
-			if (top_mod != nullptr)
-				log("Automatically selected %s as design top module.\n", log_id(top_mod));
-		}
-
 		if (flag_simcheck && top_mod == nullptr)
 			log_error("Design has no top module.\n");