From faa2d6fc1c4bc10cda96c2dc3721df209d2d2117 Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 21 Jun 2019 17:12:34 -0700
Subject: [PATCH] Constrain wreduce only if wide mux
---
techlibs/xilinx/synth_xilinx.cc | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
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");