From: Paul Mackerras <paulus@ozlabs.org>
Date: Tue, 15 Oct 2019 20:56:15 +0000 (+1100)
Subject: writeback: Eliminate inferred latch
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=57b200d6cb3cdee94fb4813b9ced31edb7a19396;p=microwatt.git

writeback: Eliminate inferred latch

This initializes data_in to all zeroes so that it doesn't become a
set of 64 inferred latches.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
---

diff --git a/writeback.vhdl b/writeback.vhdl
index 1879a5e..042ad59 100644
--- a/writeback.vhdl
+++ b/writeback.vhdl
@@ -95,6 +95,7 @@ begin
         partial_write <= '0';
         sign_extend <= '0';
         second_word <= '0';
+        data_in <= (others => '0');
 
         if e_in.write_enable = '1' then
             w_out.write_reg <= e_in.write_reg;