From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 25 Apr 2016 08:43:04 +0000 (+0200)
Subject: Fixed proc_mux performance bug
X-Git-Tag: yosys-0.7~242
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=93e107e455b506731d9114e0dc2644f78797cf0f;p=yosys.git

Fixed proc_mux performance bug
---

diff --git a/passes/proc/proc_mux.cc b/passes/proc/proc_mux.cc
index dcfa212b5..e52c5556e 100644
--- a/passes/proc/proc_mux.cc
+++ b/passes/proc/proc_mux.cc
@@ -250,6 +250,9 @@ void append_pmux(RTLIL::Module *mod, const RTLIL::SigSpec &signal, const std::ve
 	log_assert(last_mux_cell != NULL);
 	log_assert(when_signal.size() == last_mux_cell->getPort("\\A").size());
 
+	if (when_signal == last_mux_cell->getPort("\\A"))
+		return;
+
 	RTLIL::SigSpec ctrl_sig = gen_cmp(mod, signal, compare, sw);
 	log_assert(ctrl_sig.size() == 1);
 	last_mux_cell->type = "$pmux";