diff --git a/passes/silimate/Makefile.inc b/passes/silimate/Makefile.inc
index 38e665291..4622893db 100644
--- a/passes/silimate/Makefile.inc
+++ b/passes/silimate/Makefile.inc
@@ -2,7 +2,6 @@
 OBJS += passes/silimate/activity.o
 OBJS += passes/silimate/annotate_cell_fanout.o
 OBJS += passes/silimate/annotate_logic_depth.o
-OBJS += passes/silimate/annotate_unqcoef.o
 OBJS += passes/silimate/breakreduce.o
 OBJS += passes/silimate/breaksop.o
 OBJS += passes/silimate/bus_rebuild.o
diff --git a/passes/silimate/annotate_unqcoef.cc b/passes/silimate/annotate_unqcoef.cc
deleted file mode 100644
index 308509b1e..000000000
--- a/passes/silimate/annotate_unqcoef.cc
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- *	yosys -- Yosys Open SYnthesis Suite
- *
- *	Copyright (C) 2017 Robert Ou <rqou@robertou.com>
- *
- *	Permission to use, copy, modify, and/or distribute this software for any
- *	purpose with or without fee is hereby granted, provided that the above
- *	copyright notice and this permission notice appear in all copies.
- *
- *	THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- *	WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- *	MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- *	ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- *	WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- *	ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- *	OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
-#include "kernel/yosys.h"
-#include "kernel/sigtools.h"
-
-USING_YOSYS_NAMESPACE
-PRIVATE_NAMESPACE_BEGIN
-
-struct AnnotateUnqcoefPass : public Pass
-{
-	AnnotateUnqcoefPass() : Pass("annotate_unqcoef", "annotate uniqueness coefficients") { }
-
-	void help() override
-	{
-		//	 |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
-		log("\n");
-		log("		annotate_unqcoef [options] [selection]\n");
-		log("\n");
-		log("annotate uniqueness coefficients onto cells with sharing\n");
-		log("\n");
-		log("This command annotates the uniqueness of each term in reduce-style cells.\n");
-		log("These types of cells include $reduce_*, $logic_*, $eq*, $ne*, and $pmux.\n");
-		log("cell. The unq coefficient is the number of times a term is shared in similar\n");
-		log("cells. For example, if a term is shared in 4 $reduce_and cells, the uniqueness\n");
-		log("coefficient is 1/4. This is useful for predicting area/power/etc. from sharing\n");
-		log("without explicitly splitting/re-merging cells.\n");
-		log("\n");
-	}
-
-	void execute(std::vector<std::string> args, RTLIL::Design *design) override
-	{
-		log_header(design, "Executing ANNOTATE_UNQCOEF pass (annotate uniqueness coefficients).\n");
-		log_push();
-
-		size_t argidx = 1;
-		extra_args(args, argidx, design);
-
-		for (auto module : design->selected_modules())
-		{
-			// Data structures
-			SigMap sigmap(module);
-			std::map<SigBit, int> reduce_and_sig_count;
-			std::map<SigBit, int> reduce_or_sig_count;
-			std::map<SigBit, int> reduce_xor_sig_count;
-			std::map<std::pair<SigBit, SigBit>, int> eq_sig_count;
-			std::map<std::pair<SigBit, SigBit>, int> pmux_sig_count;
-
-			// Count the number of times each bit is used in a $reduce_*/$logic_*/$eq*/$ne*/$pmux cell
-			for (auto cell : module->selected_cells())
-				if (cell->type.in(ID($reduce_or), ID($logic_not), ID($logic_bool), ID($logic_and), ID($logic_or)))
-				{
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-								reduce_or_sig_count[bit]++;
-				}
-				else if (cell->type.in(ID($reduce_and)))
-				{
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-								reduce_and_sig_count[bit]++;
-				}
-				else if (cell->type.in(ID($reduce_xor), ID($reduce_xnor)))
-				{
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-								reduce_xor_sig_count[bit]++;
-				}
-				else if (cell->type.in(ID($eq), ID($ne), ID($eqx), ID($nex)))
-				{
-					SigSpec a_sig = sigmap(cell->getPort(ID::A));
-					SigSpec b_sig = sigmap(cell->getPort(ID::B));
-					for (int i = 0; i < std::min(a_sig.size(), b_sig.size()); i++)
-						eq_sig_count[std::make_pair(a_sig.extract(i), b_sig.extract(i))]++;
-				}
-				else if (cell->type.in(ID($pmux)))
-				{
-					SigSpec b_sig = sigmap(cell->getPort(ID::B));
-					SigSpec s_sig = sigmap(cell->getPort(ID::S));
-					int width = cell->getParam(ID::WIDTH).as_int();
-					for (int i = 0; i < b_sig.size(); i++)
-						pmux_sig_count[std::make_pair(s_sig.extract(i / width), b_sig.extract(i))]++;
-				}
-
-			// Calculate the overall uniqueness coefficient for each $reduce_*/$logic_*/$eq*/$ne*/$pmux cell
-			for (auto cell : module->selected_cells())
-				if (cell->type.in(ID($reduce_or), ID($logic_not), ID($logic_bool), ID($logic_and), ID($logic_or)))
-				{
-					// Calculate the uniqueness coefficient of each input bit
-					float sum_coefs = 0, n_coefs = 0;
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-							{
-								auto it = reduce_or_sig_count.find(bit);
-								if (it != reduce_or_sig_count.end())
-								{
-									sum_coefs += 1.0 / it->second;
-									n_coefs++;
-								}
-							}
-					
-					// Calculate the mean of coefficients
-					float coef = sum_coefs / n_coefs;
-
-					// Set string attribute with uniqueness coefficient
-					cell->set_string_attribute(ID(UNQCOEF), std::to_string(coef));
-				}
-				else if (cell->type.in(ID($reduce_and)))
-				{
-					// Calculate the uniqueness coefficient of each input bit
-					float sum_coefs = 0, n_coefs = 0;
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-							{
-								auto it = reduce_and_sig_count.find(bit);
-								if (it != reduce_and_sig_count.end())
-								{
-									sum_coefs += 1.0 / it->second;
-									n_coefs++;
-								}
-							}
-
-					// Calculate the mean of coefficients
-					float coef = sum_coefs / n_coefs;
-
-					// Set string attribute with uniqueness coefficient
-					cell->set_string_attribute(ID(UNQCOEF), std::to_string(coef));
-				}
-				else if (cell->type.in(ID($reduce_xor), ID($reduce_xnor)))
-				{
-					// Calculate the uniqueness coefficient of each input bit
-					float sum_coefs = 0, n_coefs = 0;
-					for (auto &conn : cell->connections())
-						if (cell->input(conn.first))
-							for (auto bit : sigmap(conn.second))
-							{
-								auto it = reduce_xor_sig_count.find(bit);
-								if (it != reduce_xor_sig_count.end())
-								{
-									sum_coefs += 1.0 / it->second;
-									n_coefs++;
-								}
-							}
-
-					// Calculate the mean of coefficients
-					float coef = sum_coefs / n_coefs;
-
-					// Set string attribute with uniqueness coefficient
-					cell->set_string_attribute(ID(UNQCOEF), std::to_string(coef));
-				}
-				else if (cell->type.in(ID($eq), ID($ne), ID($eqx), ID($nex)))
-				{
-					SigSpec a_sig = sigmap(cell->getPort(ID::A));
-					SigSpec b_sig = sigmap(cell->getPort(ID::B));
-					int width = std::min(a_sig.size(), b_sig.size());
-
-					// Calculate the uniqueness coefficient of each input bit
-					float sum_coefs = 0, n_coefs = 0;
-					for (int i = 0; i < width; i++)
-					{
-						auto it = eq_sig_count.find(std::make_pair(a_sig.extract(i), b_sig.extract(i)));
-						if (it != eq_sig_count.end())
-						{
-							sum_coefs += 1.0 / it->second;
-							n_coefs++;
-						}
-					}
-
-					// Calculate the mean of coefficients
-					float coef = 0.5 * (1 + sum_coefs / n_coefs);
-
-					// Set string attribute with uniqueness coefficient
-					cell->set_string_attribute(ID(UNQCOEF), std::to_string(coef));
-				}
-				else if (cell->type.in(ID($pmux)))
-				{
-					SigSpec b_sig = sigmap(cell->getPort(ID::B));
-					SigSpec s_sig = sigmap(cell->getPort(ID::S));
-					int width = cell->getParam(ID::WIDTH).as_int();
-
-					// Calculate the uniqueness coefficient of each input bit
-					float sum_coefs = 0, n_coefs = 0;
-					for (int i = 0; i < b_sig.size(); i++)
-					{
-						auto it = pmux_sig_count.find(std::make_pair(s_sig.extract(i / width), b_sig.extract(i)));
-						if (it != pmux_sig_count.end())
-						{
-							sum_coefs += 1.0 / it->second;
-							n_coefs++;
-						}
-					}
-
-					// Calculate the mean of coefficients
-					float coef = 0.5 * (1 + sum_coefs / n_coefs);
-
-					// Set string attribute with uniqueness coefficient
-					cell->set_string_attribute(ID(UNQCOEF), std::to_string(coef));
-				}
-		}
-	}
-} AnnotateUnqcoefPass;
-
-PRIVATE_NAMESPACE_END
diff --git a/tests/silimate/annotate_unqcoef.ys b/tests/silimate/annotate_unqcoef.ys
deleted file mode 100644
index 28d2a6915..000000000
--- a/tests/silimate/annotate_unqcoef.ys
+++ /dev/null
@@ -1,22 +0,0 @@
-log -header "Simple reduce_or annotation"
-log -push
-design -reset
-read_verilog <<EOF
-module top (
-  input wire [3:0] a,
-  output wire [1:0] x
-);
-  assign x[0] = |a[2:0];
-  assign x[1] = |a;
-endmodule
-EOF
-check -assert
-
-# Annotate uniqueness coefficients
-annotate_unqcoef
-
-# Check uniqueness coefficients are correct
-# TODO
-
-design -reset
-log -pop