From: Eddie Hung <eddie@fpgeh.com>
Date: Sat, 22 Jun 2019 00:12:34 +0000 (-0700)
Subject: Constrain wreduce only if wide mux
X-Git-Tag: working-ls180~1208^2~99
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=faa2d6fc1c4bc10cda96c2dc3721df209d2d2117;p=yosys.git

Constrain wreduce only if wide mux
---

diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index 3d39afcde..882ebe439 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -226,7 +226,10 @@ struct SynthXilinxPass : public ScriptPass
 			run("opt_clean");
 			run("check");
 			run("opt");
-			run("wreduce c:* t:$mux %d");
+			if (help_mode)
+				run("wreduce [c:* t:$mux %d]", "(no selection if -nomux)");
+			else
+				run("wreduce" + nomux ? "" : " c:* t:$mux %d");
 			run("peepopt");
 			run("opt_clean");
 			run("alumacc");