From: Yves Delley <hack@delley.net>
Date: Wed, 9 Sep 2015 13:32:09 +0000 (+0200)
Subject: fixed bug in value_bits_sign of mul operatiors
X-Git-Tag: 24jan2021_ls180~2099^2~20^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6e9d6d7a8e4456e1782a5eabb09287dc7a413789;p=litex.git

fixed bug in value_bits_sign of mul operatiors
---

diff --git a/migen/fhdl/bitcontainer.py b/migen/fhdl/bitcontainer.py
index 381afc35..9763845f 100644
--- a/migen/fhdl/bitcontainer.py
+++ b/migen/fhdl/bitcontainer.py
@@ -50,13 +50,13 @@ def value_bits_sign(v):
         elif v.op == "*":
             if not obs[0][1] and not obs[1][1]:
                 # both operands unsigned
-                return obs[0][0] + obs[1][0]
+                return obs[0][0] + obs[1][0], False
             elif obs[0][1] and obs[1][1]:
                 # both operands signed
-                return obs[0][0] + obs[1][0] - 1
+                return obs[0][0] + obs[1][0] - 1, True
             else:
                 # one operand signed, the other unsigned (add sign bit)
-                return obs[0][0] + obs[1][0] + 1 - 1
+                return obs[0][0] + obs[1][0] + 1 - 1, True
         elif v.op == "<<<":
             if obs[1][1]:
                 extra = 2**(obs[1][0] - 1) - 1