From d4d1a1bfd76be252a26029492b7bdb944147e359 Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Wed, 3 Jul 2024 21:44:31 +0200
Subject: [PATCH] gen/fhdl/hierarchy: Sort instances to generate deterministic
 hierarchy in verilog.

---
 litex/gen/fhdl/hierarchy.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litex/gen/fhdl/hierarchy.py b/litex/gen/fhdl/hierarchy.py
index 720fe0207..663dc6e1b 100644
--- a/litex/gen/fhdl/hierarchy.py
+++ b/litex/gen/fhdl/hierarchy.py
@@ -41,7 +41,7 @@ class LiteXHierarchyExplorer:
                 r += self.get_tree(mod, ident + 1)
 
         # Instances.
-        for s in module._fragment.specials:
+        for s in sorted(module._fragment.specials, key=lambda x: str(x)):
             if (self.depth is None) or (ident <= self.depth):
                 if isinstance(s, Instance):
                     show = with_instances