From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Wed, 19 Dec 2012 15:03:05 +0000 (+0100)
Subject: pytholite: prune unused registers
X-Git-Tag: 24jan2021_ls180~2099^2~711
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9c65402fda758f14d67ecf24adfbfbe6367f0f8a;p=litex.git

pytholite: prune unused registers
---

diff --git a/migen/pytholite/compiler.py b/migen/pytholite/compiler.py
index d25fe455..2d437bc1 100644
--- a/migen/pytholite/compiler.py
+++ b/migen/pytholite/compiler.py
@@ -237,8 +237,9 @@ def make_pytholite(func, **ioresources):
 	
 	regf = Fragment()
 	for register in registers:
-		register.finalize()
-		regf += register.get_fragment()
+		if register.source_encoding:
+			register.finalize()
+			regf += register.get_fragment()
 	
 	fsm = implement_fsm(states)
 	fsmf = LowerAbstractLoad().visit(fsm.get_fragment())