Merge pull request #1452 from nakengelhardt/fix_dsp_mem_reg

Call memory_dff before DSP mapping to reserve registers (fixes #1447)
diff --git a/Makefile b/Makefile
index 895cfbf..845a97b 100644
--- a/Makefile
+++ b/Makefile
@@ -147,9 +147,9 @@
 include Makefile.conf
 endif
 
+PYTHON_EXECUTABLE := $(shell if python3 -c ""; then echo "python3"; else echo "python"; fi)
 ifeq ($(ENABLE_PYOSYS),1)
 PYTHON_VERSION_TESTCODE := "import sys;t='{v[0]}.{v[1]}'.format(v=list(sys.version_info[:2]));print(t)"
-PYTHON_EXECUTABLE := $(shell if python3 -c ""; then echo "python3"; else echo "python"; fi)
 PYTHON_VERSION := $(shell $(PYTHON_EXECUTABLE) -c ""$(PYTHON_VERSION_TESTCODE)"")
 PYTHON_MAJOR_VERSION := $(shell echo $(PYTHON_VERSION) | cut -f1 -d.)
 PYTHON_PREFIX := $(shell $(PYTHON_EXECUTABLE)-config --prefix)
@@ -713,7 +713,11 @@
 	+cd tests/opt && bash run-test.sh
 	+cd tests/aiger && bash run-test.sh $(ABCOPT)
 	+cd tests/arch && bash run-test.sh
-	+cd tests/ice40 && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/ice40 && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/xilinx && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/ecp5 && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/efinix && bash run-test.sh $(SEEDOPT)
+	+cd tests/arch/anlogic && bash run-test.sh $(SEEDOPT)
 	+cd tests/rpc && bash run-test.sh
 	@echo ""
 	@echo "  Passed \"make test\"."
diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc
index c5eef4b..9f9eeb7 100644
--- a/frontends/verific/verific.cc
+++ b/frontends/verific/verific.cc
@@ -1256,7 +1256,7 @@
 		if (inst->Type() == PRIM_SVA_ASSERT || inst->Type() == PRIM_SVA_IMMEDIATE_ASSERT)
 			sva_asserts.insert(inst);
 
-		if (inst->Type() == PRIM_SVA_ASSUME || inst->Type() == PRIM_SVA_IMMEDIATE_ASSUME)
+		if (inst->Type() == PRIM_SVA_ASSUME || inst->Type() == PRIM_SVA_IMMEDIATE_ASSUME || inst->Type() == PRIM_SVA_RESTRICT)
 			sva_assumes.insert(inst);
 
 		if (inst->Type() == PRIM_SVA_COVER || inst->Type() == PRIM_SVA_IMMEDIATE_COVER)
diff --git a/frontends/verilog/verilog_frontend.cc b/frontends/verilog/verilog_frontend.cc
index 0e2bead..058d750 100644
--- a/frontends/verilog/verilog_frontend.cc
+++ b/frontends/verilog/verilog_frontend.cc
@@ -553,6 +553,12 @@
 		log("    -Uname[=definition]\n");
 		log("        undefine the preprocessor symbol 'name'\n");
 		log("\n");
+		log("    -reset\n");
+		log("        clear list of defined preprocessor symbols\n");
+		log("\n");
+		log("    -list\n");
+		log("        list currently defined preprocessor symbols\n");
+		log("\n");
 	}
 	void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
 	{
@@ -588,6 +594,16 @@
 				design->verilog_defines.erase(name);
 				continue;
 			}
+			if (arg == "-reset") {
+				design->verilog_defines.clear();
+				continue;
+			}
+			if (arg == "-list") {
+				for (auto &it : design->verilog_defines) {
+					log("`define %s%s %s\n", it.first.c_str(), it.second.second ? "()" : "", it.second.first.c_str());
+				}
+				continue;
+			}
 			break;
 		}
 
diff --git a/passes/pmgen/Makefile.inc b/passes/pmgen/Makefile.inc
index 366c379..145d2eb 100644
--- a/passes/pmgen/Makefile.inc
+++ b/passes/pmgen/Makefile.inc
@@ -1,5 +1,5 @@
 %_pm.h: passes/pmgen/pmgen.py %.pmg
-	$(P) mkdir -p passes/pmgen && python3 $< -o $@ -p $(subst _pm.h,,$(notdir $@)) $(filter-out $<,$^)
+	$(P) mkdir -p passes/pmgen && $(PYTHON_EXECUTABLE) $< -o $@ -p $(subst _pm.h,,$(notdir $@)) $(filter-out $<,$^)
 
 # --------------------------------------
 
@@ -38,7 +38,7 @@
 PEEPOPT_PATTERN += passes/pmgen/peepopt_dffmux.pmg
 
 passes/pmgen/peepopt_pm.h: passes/pmgen/pmgen.py $(PEEPOPT_PATTERN)
-	$(P) mkdir -p passes/pmgen && python3 $< -o $@ -p peepopt $(filter-out $<,$^)
+	$(P) mkdir -p passes/pmgen && $(PYTHON_EXECUTABLE) $< -o $@ -p peepopt $(filter-out $<,$^)
 
 # --------------------------------------
 
diff --git a/techlibs/common/Makefile.inc b/techlibs/common/Makefile.inc
index 6c0a4fe..a42f631 100644
--- a/techlibs/common/Makefile.inc
+++ b/techlibs/common/Makefile.inc
@@ -9,12 +9,12 @@
 
 techlibs/common/simlib_help.inc: techlibs/common/cellhelp.py techlibs/common/simlib.v
 	$(Q) mkdir -p techlibs/common
-	$(P) python3 $^ > $@.new
+	$(P) $(PYTHON_EXECUTABLE) $^ > $@.new
 	$(Q) mv $@.new $@
 
 techlibs/common/simcells_help.inc: techlibs/common/cellhelp.py techlibs/common/simcells.v
 	$(Q) mkdir -p techlibs/common
-	$(P) python3 $^ > $@.new
+	$(P) $(PYTHON_EXECUTABLE) $^ > $@.new
 	$(Q) mv $@.new $@
 
 kernel/register.o: techlibs/common/simlib_help.inc techlibs/common/simcells_help.inc
diff --git a/techlibs/ecp5/Makefile.inc b/techlibs/ecp5/Makefile.inc
index 5832d07..46463f5 100644
--- a/techlibs/ecp5/Makefile.inc
+++ b/techlibs/ecp5/Makefile.inc
@@ -27,12 +27,12 @@
 
 techlibs/ecp5/brams_init.mk: techlibs/ecp5/brams_init.py
 	$(Q) mkdir -p techlibs/ecp5
-	$(P) python3 $<
+	$(P) $(PYTHON_EXECUTABLE) $<
 	$(Q) touch $@
 
 techlibs/ecp5/brams_connect.mk: techlibs/ecp5/brams_connect.py
 	$(Q) mkdir -p techlibs/ecp5
-	$(P) python3 $<
+	$(P) $(PYTHON_EXECUTABLE) $<
 	$(Q) touch $@
 
 
diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc
index a79dee3..800a8ce 100644
--- a/techlibs/ecp5/synth_ecp5.cc
+++ b/techlibs/ecp5/synth_ecp5.cc
@@ -314,9 +314,9 @@
 			if (abc9) {
 				run("read_verilog -icells -lib +/ecp5/abc9_model.v");
 				if (nowidelut)
-					run("abc9 -lut +/ecp5/abc9_5g_nowide.lut -box +/ecp5/abc9_5g.box -W 200");
+					run("abc9 -lut +/ecp5/abc9_5g_nowide.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs");
 				else
-					run("abc9 -lut +/ecp5/abc9_5g.lut -box +/ecp5/abc9_5g.box -W 200");
+					run("abc9 -lut +/ecp5/abc9_5g.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs");
 				run("techmap -map +/ecp5/abc9_unmap.v");
 			} else {
 				if (nowidelut)
diff --git a/techlibs/efinix/cells_map.v b/techlibs/efinix/cells_map.v
index 0aeab19..3ecec3b 100644
--- a/techlibs/efinix/cells_map.v
+++ b/techlibs/efinix/cells_map.v
@@ -17,6 +17,18 @@
 module  \$_DFF_PP0_ (input D, C, R, output Q); EFX_FF #(.CLK_POLARITY(1'b1), .CE_POLARITY(1'b1), .SR_POLARITY(1'b1), .D_POLARITY(1'b1), .SR_SYNC(1'b0), .SR_VALUE(1'b0), .SR_SYNC_PRIORITY(1'b1)) _TECHMAP_REPLACE_ (.D(D), .CE(1'b1), .CLK(C), .SR(R), .Q(Q)); endmodule
 module  \$_DFF_PP1_ (input D, C, R, output Q); EFX_FF #(.CLK_POLARITY(1'b1), .CE_POLARITY(1'b1), .SR_POLARITY(1'b1), .D_POLARITY(1'b1), .SR_SYNC(1'b0), .SR_VALUE(1'b1), .SR_SYNC_PRIORITY(1'b1)) _TECHMAP_REPLACE_ (.D(D), .CE(1'b1), .CLK(C), .SR(R), .Q(Q)); endmodule
 
+module \$_DLATCH_N_ (E, D, Q);
+  wire [1023:0] _TECHMAP_DO_ = "simplemap; opt";
+  input E, D;
+  output Q = !E ? D : Q;
+endmodule
+
+module \$_DLATCH_P_ (E, D, Q);
+  wire [1023:0] _TECHMAP_DO_ = "simplemap; opt";
+  input E, D;
+  output Q = E ? D : Q;
+endmodule
+
 `ifndef NO_LUT
 module \$lut (A, Y);
   parameter WIDTH = 0;
diff --git a/techlibs/efinix/cells_sim.v b/techlibs/efinix/cells_sim.v
index 2fc2034..a74d1c5 100644
--- a/techlibs/efinix/cells_sim.v
+++ b/techlibs/efinix/cells_sim.v
@@ -59,7 +59,9 @@
    assign ce = CE_POLARITY ? CE : ~CE;
    assign sr = SR_POLARITY ? SR : ~SR;
    assign d = D_POLARITY ? D : ~D;
-  
+
+	initial Q = 1'b0;
+
    generate
    	if (SR_SYNC == 1) 
       begin
diff --git a/techlibs/ice40/Makefile.inc b/techlibs/ice40/Makefile.inc
index 3c33fcb..31478e8 100644
--- a/techlibs/ice40/Makefile.inc
+++ b/techlibs/ice40/Makefile.inc
@@ -14,7 +14,7 @@
 
 techlibs/ice40/brams_init.mk: techlibs/ice40/brams_init.py
 	$(Q) mkdir -p techlibs/ice40
-	$(P) python3 $<
+	$(P) $(PYTHON_EXECUTABLE) $<
 	$(Q) touch techlibs/ice40/brams_init.mk
 
 techlibs/ice40/brams_init1.vh: techlibs/ice40/brams_init.mk
diff --git a/techlibs/xilinx/Makefile.inc b/techlibs/xilinx/Makefile.inc
index 0ae67d9..1e59f0a 100644
--- a/techlibs/xilinx/Makefile.inc
+++ b/techlibs/xilinx/Makefile.inc
@@ -13,7 +13,7 @@
 
 techlibs/xilinx/brams_init.mk: techlibs/xilinx/brams_init.py
 	$(Q) mkdir -p techlibs/xilinx
-	$(P) python3 $<
+	$(P) $(PYTHON_EXECUTABLE) $<
 	$(Q) touch $@
 
 techlibs/xilinx/brams_init_36.vh: techlibs/xilinx/brams_init.mk
diff --git a/tests/ice40/.gitignore b/tests/arch/anlogic/.gitignore
similarity index 100%
copy from tests/ice40/.gitignore
copy to tests/arch/anlogic/.gitignore
diff --git a/tests/arch/anlogic/add_sub.ys b/tests/arch/anlogic/add_sub.ys
new file mode 100644
index 0000000..5396ce7
--- /dev/null
+++ b/tests/arch/anlogic/add_sub.ys
@@ -0,0 +1,10 @@
+read_verilog ../common/add_sub.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 10 t:AL_MAP_ADDER
+select -assert-count 4 t:AL_MAP_LUT1
+
+select -assert-none t:AL_MAP_LUT1 t:AL_MAP_ADDER %% t:* %D
diff --git a/tests/arch/anlogic/counter.ys b/tests/arch/anlogic/counter.ys
new file mode 100644
index 0000000..d363ec2
--- /dev/null
+++ b/tests/arch/anlogic/counter.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/counter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 9 t:AL_MAP_ADDER
+select -assert-count 8 t:AL_MAP_SEQ
+select -assert-none t:AL_MAP_SEQ t:AL_MAP_ADDER %% t:* %D
diff --git a/tests/arch/anlogic/dffs.ys b/tests/arch/anlogic/dffs.ys
new file mode 100644
index 0000000..d3281ab
--- /dev/null
+++ b/tests/arch/anlogic/dffs.ys
@@ -0,0 +1,20 @@
+read_verilog ../common/dffs.v
+design -save read
+
+hierarchy -top dff
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dff # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_SEQ
+select -assert-none t:AL_MAP_SEQ %% t:* %D
+
+design -load read
+hierarchy -top dffe
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffe # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT3
+select -assert-count 1 t:AL_MAP_SEQ
+select -assert-none t:AL_MAP_LUT3 t:AL_MAP_SEQ %% t:* %D
diff --git a/tests/arch/anlogic/fsm.ys b/tests/arch/anlogic/fsm.ys
new file mode 100644
index 0000000..f45951b
--- /dev/null
+++ b/tests/arch/anlogic/fsm.ys
@@ -0,0 +1,15 @@
+read_verilog ../common/fsm.v
+hierarchy -top fsm
+proc
+#flatten
+#ERROR: Found 4 unproven $equiv cells in 'equiv_status -assert'.
+#equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+equiv_opt -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd fsm # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT2
+select -assert-count 5 t:AL_MAP_LUT5
+select -assert-count 1 t:AL_MAP_LUT6
+select -assert-count 6 t:AL_MAP_SEQ
+
+select -assert-none t:AL_MAP_LUT2 t:AL_MAP_LUT5 t:AL_MAP_LUT6 t:AL_MAP_SEQ %% t:* %D
diff --git a/tests/arch/anlogic/latches.ys b/tests/arch/anlogic/latches.ys
new file mode 100644
index 0000000..8d66f77
--- /dev/null
+++ b/tests/arch/anlogic/latches.ys
@@ -0,0 +1,33 @@
+read_verilog ../common/latches.v
+design -save read
+
+hierarchy -top latchp
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_anlogic
+cd latchp # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT3
+
+select -assert-none t:AL_MAP_LUT3 %% t:* %D
+
+
+design -load read
+hierarchy -top latchn
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_anlogic
+cd latchn # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT3
+
+select -assert-none t:AL_MAP_LUT3 %% t:* %D
+
+
+design -load read
+hierarchy -top latchsr
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_anlogic
+cd latchsr # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT5
+
+select -assert-none t:AL_MAP_LUT5 %% t:* %D
diff --git a/tests/arch/anlogic/logic.ys b/tests/arch/anlogic/logic.ys
new file mode 100644
index 0000000..125ee5d
--- /dev/null
+++ b/tests/arch/anlogic/logic.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/logic.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:AL_MAP_LUT1
+select -assert-count 6 t:AL_MAP_LUT2
+select -assert-count 2 t:AL_MAP_LUT4
+select -assert-none t:AL_MAP_LUT1 t:AL_MAP_LUT2 t:AL_MAP_LUT4 %% t:* %D
diff --git a/tests/arch/anlogic/memory.ys b/tests/arch/anlogic/memory.ys
new file mode 100644
index 0000000..87b93c2
--- /dev/null
+++ b/tests/arch/anlogic/memory.ys
@@ -0,0 +1,21 @@
+read_verilog ../common/memory.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/anlogic/cells_sim.v synth_anlogic
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+#ERROR: Failed to import cell gate.mem.0.0.0 (type EG_LOGIC_DRAM16X4) to SAT database.
+#sat -verify -prove-asserts -seq 3 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+
+select -assert-count 8  t:AL_MAP_LUT2
+select -assert-count 8  t:AL_MAP_LUT4
+select -assert-count 8   t:AL_MAP_LUT5
+select -assert-count 36 t:AL_MAP_SEQ
+select -assert-count 8  t:EG_LOGIC_DRAM16X4 #Why not AL_LOGIC_BRAM?
+select -assert-none t:AL_MAP_LUT2 t:AL_MAP_LUT4 t:AL_MAP_LUT5 t:AL_MAP_SEQ t:EG_LOGIC_DRAM16X4 %% t:* %D
diff --git a/tests/arch/anlogic/mux.ys b/tests/arch/anlogic/mux.ys
new file mode 100644
index 0000000..3d5fe7c
--- /dev/null
+++ b/tests/arch/anlogic/mux.ys
@@ -0,0 +1,42 @@
+read_verilog ../common/mux.v
+design -save read
+
+hierarchy -top mux2
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux2 # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT3
+
+select -assert-none t:AL_MAP_LUT3 %% t:* %D
+
+design -load read
+hierarchy -top mux4
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux4 # Constrain all select calls below inside the top module
+select -assert-count 1 t:AL_MAP_LUT6
+
+select -assert-none t:AL_MAP_LUT6 %% t:* %D
+
+design -load read
+hierarchy -top mux8
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux8 # Constrain all select calls below inside the top module
+select -assert-count 3 t:AL_MAP_LUT4
+select -assert-count 1 t:AL_MAP_LUT6
+
+select -assert-none t:AL_MAP_LUT4 t:AL_MAP_LUT6 %% t:* %D
+
+design -load read
+hierarchy -top mux16
+proc
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux16 # Constrain all select calls below inside the top module
+select -assert-count 5 t:AL_MAP_LUT6
+
+select -assert-none t:AL_MAP_LUT6 %% t:* %D
diff --git a/tests/xilinx/run-test.sh b/tests/arch/anlogic/run-test.sh
similarity index 74%
rename from tests/xilinx/run-test.sh
rename to tests/arch/anlogic/run-test.sh
index ea56b70..bf19b88 100755
--- a/tests/xilinx/run-test.sh
+++ b/tests/arch/anlogic/run-test.sh
@@ -6,7 +6,7 @@
 	echo "all:: run-$x"
 	echo "run-$x:"
 	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log $x"
+	echo "	@../../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
 done
 for s in *.sh; do
 	if [ "$s" != "run-test.sh" ]; then
diff --git a/tests/arch/anlogic/shifter.ys b/tests/arch/anlogic/shifter.ys
new file mode 100644
index 0000000..12df44b
--- /dev/null
+++ b/tests/arch/anlogic/shifter.ys
@@ -0,0 +1,10 @@
+read_verilog ../common/shifter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/anlogic/cells_sim.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 8 t:AL_MAP_SEQ
+
+select -assert-none t:AL_MAP_SEQ %% t:* %D
diff --git a/tests/arch/anlogic/tribuf.ys b/tests/arch/anlogic/tribuf.ys
new file mode 100644
index 0000000..eaa0737
--- /dev/null
+++ b/tests/arch/anlogic/tribuf.ys
@@ -0,0 +1,9 @@
+read_verilog ../common/tribuf.v
+hierarchy -top tristate
+proc
+flatten
+equiv_opt -assert -map +/anlogic/cells_sim.v -map +/simcells.v synth_anlogic # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd tristate # Constrain all select calls below inside the top module
+select -assert-count 1 t:$_TBUF_
+select -assert-none t:$_TBUF_ %% t:* %D
diff --git a/tests/arch/common/add_sub.v b/tests/arch/common/add_sub.v
new file mode 100644
index 0000000..77e5f57
--- /dev/null
+++ b/tests/arch/common/add_sub.v
@@ -0,0 +1,12 @@
+module top
+(
+    input [3:0] x,
+    input [3:0] y,
+
+    output [3:0] A,
+    output [3:0] B
+);
+
+    assign A =  x + y;
+    assign B =  x - y;
+endmodule
diff --git a/tests/arch/common/adffs.v b/tests/arch/common/adffs.v
new file mode 100644
index 0000000..576bd81
--- /dev/null
+++ b/tests/arch/common/adffs.v
@@ -0,0 +1,43 @@
+module adff( input d, clk, clr, output reg q );
+    initial begin
+        q = 0;
+    end
+	  always @( posedge clk, posedge clr )
+      if ( clr )
+        q <= 1'b0;
+      else
+        q <= d;
+endmodule
+
+module adffn( input d, clk, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+	  always @( posedge clk, negedge clr )
+		  if ( !clr )
+			  q <= 1'b0;
+  		else
+        q <= d;
+endmodule
+
+module dffs( input d, clk, pre, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+    always @( posedge clk )
+      if ( pre )
+        q <= 1'b1;
+      else
+        q <= d;
+endmodule
+
+module ndffnr( input d, clk, pre, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+    always @( negedge clk )
+      if ( !clr )
+        q <= 1'b0;
+      else
+        q <= d;
+endmodule
diff --git a/tests/arch/common/counter.v b/tests/arch/common/counter.v
new file mode 100644
index 0000000..9746fd7
--- /dev/null
+++ b/tests/arch/common/counter.v
@@ -0,0 +1,11 @@
+module top ( out, clk, reset );

+    output [7:0] out;

+    input clk, reset;

+    reg [7:0] out;

+

+    always @(posedge clk, posedge reset)

+      if (reset)

+          out <= 8'b0;

+      else

+          out <= out + 1;

+endmodule

diff --git a/tests/arch/common/dffs.v b/tests/arch/common/dffs.v
new file mode 100644
index 0000000..636252d
--- /dev/null
+++ b/tests/arch/common/dffs.v
@@ -0,0 +1,13 @@
+module dff ( input d, clk, output reg q );
+	  always @( posedge clk )
+        q <= d;
+endmodule
+
+module dffe( input d, clk, en, output reg q );
+    initial begin
+        q = 0;
+    end
+	  always @( posedge clk )
+        if ( en )
+              q <= d;
+endmodule
diff --git a/tests/arch/common/fsm.v b/tests/arch/common/fsm.v
new file mode 100644
index 0000000..9d3fbb6
--- /dev/null
+++ b/tests/arch/common/fsm.v
@@ -0,0 +1,51 @@
+ module fsm ( clock, reset, req_0, req_1, gnt_0, gnt_1 );

+    input   clock,reset,req_0,req_1;

+    output  gnt_0,gnt_1;

+    wire    clock,reset,req_0,req_1;

+    reg     gnt_0,gnt_1;

+

+    parameter SIZE = 3;

+    parameter IDLE = 3'b001;

+    parameter GNT0 = 3'b010;

+    parameter GNT1 = 3'b100;

+    parameter GNT2 = 3'b101;

+

+    reg [SIZE-1:0] state;

+    reg [SIZE-1:0] next_state;

+

+    always @ (posedge clock)

+        begin : FSM

+          if (reset == 1'b1) begin

+            state <=  #1  IDLE;

+            gnt_0 <= 0;

+            gnt_1 <= 0;

+          end 

+          else

+            case(state)

+              IDLE :  if (req_0 == 1'b1) begin

+                          state <=  #1  GNT0;

+                          gnt_0 <= 1;

+                      end else if (req_1 == 1'b1) begin

+                          gnt_1 <= 1;

+                          state <=  #1  GNT0;

+                      end else begin

+                          state <=  #1  IDLE;

+                      end

+              GNT0 :  if (req_0 == 1'b1) begin

+                          state <=  #1  GNT0;

+                      end else begin

+                          gnt_0 <= 0;

+                          state <=  #1  IDLE;

+                      end

+              GNT1 :  if (req_1 == 1'b1) begin

+                          state <=  #1  GNT2;

+                          gnt_1 <= req_0;

+                      end

+              GNT2 :  if (req_0 == 1'b1) begin

+                          state <=  #1  GNT1;

+                          gnt_1 <= req_1;

+                      end

+              default : state <=  #1  IDLE;

+            endcase

+        end

+endmodule

diff --git a/tests/arch/common/latches.v b/tests/arch/common/latches.v
new file mode 100644
index 0000000..60b7571
--- /dev/null
+++ b/tests/arch/common/latches.v
@@ -0,0 +1,21 @@
+module latchp ( input d, clk, en, output reg q );
+	always @*
+		if ( en )
+			q <= d;
+endmodule
+
+module latchn ( input d, clk, en, output reg q );
+	always @*
+		if ( !en )
+			q <= d;
+endmodule
+
+module latchsr ( input d, clk, en, clr, pre, output reg q );
+	always @*
+		if ( clr )
+			q <= 1'b0;
+		else if ( pre )
+			q <= 1'b1;
+		else if ( en )
+			q <= d;
+endmodule
diff --git a/tests/arch/common/logic.v b/tests/arch/common/logic.v
new file mode 100644
index 0000000..c17899f
--- /dev/null
+++ b/tests/arch/common/logic.v
@@ -0,0 +1,16 @@
+module top
+(
+    input [0:7] in,
+    output B1,B2,B3,B4,B5,B6,B7,B8,B9,B10
+);
+    assign B1 =  in[0] & in[1];
+    assign B2 =  in[0] | in[1];
+    assign B3 =  in[0] ~& in[1];
+    assign B4 =  in[0] ~| in[1];
+    assign B5 =  in[0] ^ in[1];
+    assign B6 =  in[0] ~^ in[1];
+    assign B7 =  ~in[0];
+    assign B8 =  in[0];
+    assign B9 =  in[0:1] && in [2:3];
+    assign B10 =  in[0:1] || in [2:3];
+endmodule
diff --git a/tests/ice40/memory.v b/tests/arch/common/memory.v
similarity index 100%
rename from tests/ice40/memory.v
rename to tests/arch/common/memory.v
diff --git a/tests/arch/common/mul.v b/tests/arch/common/mul.v
new file mode 100644
index 0000000..437a91c
--- /dev/null
+++ b/tests/arch/common/mul.v
@@ -0,0 +1,9 @@
+module top
+(
+    input [5:0] x,
+    input [5:0] y,
+
+    output [11:0] A,
+);
+    assign A =  x * y;
+endmodule
diff --git a/tests/arch/common/mux.v b/tests/arch/common/mux.v
new file mode 100644
index 0000000..71c1ac7
--- /dev/null
+++ b/tests/arch/common/mux.v
@@ -0,0 +1,60 @@
+module mux2 (S,A,B,Y);
+    input S;
+    input A,B;
+    output reg Y;
+
+    always @(*)
+		Y = (S)? B : A;
+endmodule
+
+module mux4 ( S, D, Y );
+    input[1:0] S;
+    input[3:0] D;
+    output Y;
+
+    reg Y;
+    wire[1:0] S;
+    wire[3:0] D;
+
+    always @*
+    begin
+        case( S )
+            0 : Y = D[0];
+            1 : Y = D[1];
+            2 : Y = D[2];
+            3 : Y = D[3];
+        endcase
+    end
+endmodule
+
+module mux8 ( S, D, Y );
+    input[2:0] S;
+    input[7:0] D;
+    output Y;
+
+    reg Y;
+    wire[2:0] S;
+    wire[7:0] D;
+
+    always @*
+    begin
+        case( S )
+            0 : Y = D[0];
+            1 : Y = D[1];
+            2 : Y = D[2];
+            3 : Y = D[3];
+            4 : Y = D[4];
+            5 : Y = D[5];
+            6 : Y = D[6];
+            7 : Y = D[7];
+        endcase
+    end
+endmodule
+
+module mux16 (D, S, Y);
+ 	input  [15:0] D;
+ 	input  [3:0] S;
+ 	output Y;
+
+    assign Y = D[S];
+endmodule
diff --git a/tests/ice40/shifter.v b/tests/arch/common/shifter.v
similarity index 61%
rename from tests/ice40/shifter.v
rename to tests/arch/common/shifter.v
index c556325..cace3b5 100644
--- a/tests/ice40/shifter.v
+++ b/tests/arch/common/shifter.v
@@ -1,22 +1,11 @@
-module top    (

-out,

-clk,

-in

-);

+module top(out, clk, in);

     output [7:0] out;

     input signed clk, in;

     reg signed [7:0] out = 0;

 

     always @(posedge clk)

 	begin

-`ifndef BUG

 		out    <= out >> 1;

 		out[7] <= in;

-`else

-

-		out    <= out << 1;

-		out[7] <= in;

-`endif

-	end

-

+	end    

 endmodule

diff --git a/tests/arch/common/tribuf.v b/tests/arch/common/tribuf.v
new file mode 100644
index 0000000..e1d7016
--- /dev/null
+++ b/tests/arch/common/tribuf.v
@@ -0,0 +1,8 @@
+module tristate(en, i, o);
+    input en;
+    input i;
+    output reg o;
+
+    always @(en or i)
+        o <= (en)? i : 1'bZ;
+endmodule
diff --git a/tests/arch/ecp5/.gitignore b/tests/arch/ecp5/.gitignore
new file mode 100644
index 0000000..1d329c9
--- /dev/null
+++ b/tests/arch/ecp5/.gitignore
@@ -0,0 +1,2 @@
+*.log
+/run-test.mk
diff --git a/tests/arch/ecp5/add_sub.ys b/tests/arch/ecp5/add_sub.ys
new file mode 100644
index 0000000..d85ce79
--- /dev/null
+++ b/tests/arch/ecp5/add_sub.ys
@@ -0,0 +1,9 @@
+read_verilog ../common/add_sub.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 10 t:LUT4
+select -assert-none t:LUT4 %% t:* %D
+
diff --git a/tests/arch/ecp5/adffs.ys b/tests/arch/ecp5/adffs.ys
new file mode 100644
index 0000000..01605df
--- /dev/null
+++ b/tests/arch/ecp5/adffs.ys
@@ -0,0 +1,40 @@
+read_verilog ../common/adffs.v
+design -save read
+
+hierarchy -top adff
+proc
+equiv_opt -async2sync -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adff # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-none t:TRELLIS_FF %% t:* %D
+
+design -load read
+hierarchy -top adffn
+proc
+equiv_opt -async2sync -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adffn # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-count 1 t:LUT4
+select -assert-none t:TRELLIS_FF t:LUT4 %% t:* %D
+
+design -load read
+hierarchy -top dffs
+proc
+equiv_opt -async2sync -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffs # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-count 1 t:LUT4
+select -assert-none t:TRELLIS_FF t:LUT4 %% t:* %D
+
+design -load read
+hierarchy -top ndffnr
+proc
+equiv_opt -async2sync -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd ndffnr # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-count 1 t:LUT4
+select -assert-none t:TRELLIS_FF t:LUT4 %% t:* %D
diff --git a/tests/arch/ecp5/counter.ys b/tests/arch/ecp5/counter.ys
new file mode 100644
index 0000000..f9f60fb
--- /dev/null
+++ b/tests/arch/ecp5/counter.ys
@@ -0,0 +1,10 @@
+read_verilog ../common/counter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 4 t:CCU2C
+select -assert-count 8 t:TRELLIS_FF
+select -assert-none t:CCU2C t:TRELLIS_FF %% t:* %D
diff --git a/tests/arch/ecp5/dffs.ys b/tests/arch/ecp5/dffs.ys
new file mode 100644
index 0000000..be97972
--- /dev/null
+++ b/tests/arch/ecp5/dffs.ys
@@ -0,0 +1,19 @@
+read_verilog ../common/dffs.v
+design -save read
+
+hierarchy -top dff
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dff # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-none t:TRELLIS_FF %% t:* %D
+
+design -load read
+hierarchy -top dffe
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffe # Constrain all select calls below inside the top module
+select -assert-count 1 t:TRELLIS_FF
+select -assert-none t:TRELLIS_FF %% t:* %D
\ No newline at end of file
diff --git a/tests/ice40/dpram.v b/tests/arch/ecp5/dpram.v
similarity index 100%
copy from tests/ice40/dpram.v
copy to tests/arch/ecp5/dpram.v
diff --git a/tests/arch/ecp5/dpram.ys b/tests/arch/ecp5/dpram.ys
new file mode 100644
index 0000000..3bc6bc1
--- /dev/null
+++ b/tests/arch/ecp5/dpram.ys
@@ -0,0 +1,18 @@
+read_verilog dpram.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/ecp5/cells_sim.v synth_ecp5
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+
+#Blocked by issue #1358 (Missing ECP5 simulation models)
+#ERROR: Failed to import cell gate.mem.0.0.0 (type DP16KD) to SAT database.
+#sat -verify -prove-asserts -seq 3 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+select -assert-count 1 t:DP16KD
+select -assert-none t:DP16KD %% t:* %D
diff --git a/tests/arch/ecp5/fsm.ys b/tests/arch/ecp5/fsm.ys
new file mode 100644
index 0000000..f834a4c
--- /dev/null
+++ b/tests/arch/ecp5/fsm.ys
@@ -0,0 +1,12 @@
+read_verilog ../common/fsm.v
+hierarchy -top fsm
+proc
+flatten
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd fsm # Constrain all select calls below inside the top module
+select -assert-count 1 t:L6MUX21
+select -assert-count 13 t:LUT4
+select -assert-count 5 t:PFUMX
+select -assert-count 5 t:TRELLIS_FF
+select -assert-none t:L6MUX21 t:LUT4 t:PFUMX t:TRELLIS_FF %% t:* %D
diff --git a/tests/arch/ecp5/latches.ys b/tests/arch/ecp5/latches.ys
new file mode 100644
index 0000000..3d011d7
--- /dev/null
+++ b/tests/arch/ecp5/latches.ys
@@ -0,0 +1,34 @@
+read_verilog ../common/latches.v
+design -save read
+
+hierarchy -top latchp
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ecp5
+cd latchp # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT4
+
+select -assert-none t:LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchn
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ecp5
+cd latchn # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT4
+
+select -assert-none t:LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchsr
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ecp5
+cd latchsr # Constrain all select calls below inside the top module
+select -assert-count 2 t:LUT4
+select -assert-count 1 t:PFUMX
+
+select -assert-none t:LUT4 t:PFUMX %% t:* %D
diff --git a/tests/arch/ecp5/logic.ys b/tests/arch/ecp5/logic.ys
new file mode 100644
index 0000000..3298b19
--- /dev/null
+++ b/tests/arch/ecp5/logic.ys
@@ -0,0 +1,8 @@
+read_verilog ../common/logic.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 9 t:LUT4
+select -assert-none t:LUT4 %% t:* %D
diff --git a/tests/arch/ecp5/macc.v b/tests/arch/ecp5/macc.v
new file mode 100644
index 0000000..63a3d3a
--- /dev/null
+++ b/tests/arch/ecp5/macc.v
@@ -0,0 +1,25 @@
+/*
+Example from: https://www.latticesemi.com/-/media/LatticeSemi/Documents/UserManuals/EI/iCEcube201701UserGuide.ashx?document_id=52071 [p. 77].
+*/
+module top(clk,a,b,c,set);
+parameter A_WIDTH = 4;
+parameter B_WIDTH = 3;
+input set;
+input clk;
+input signed [(A_WIDTH - 1):0] a;
+input signed [(B_WIDTH - 1):0] b;
+output signed [(A_WIDTH + B_WIDTH - 1):0] c;
+reg [(A_WIDTH + B_WIDTH - 1):0] reg_tmp_c;
+assign c = reg_tmp_c;
+always @(posedge clk)
+begin
+if(set)
+begin
+reg_tmp_c <= 0;
+end
+else
+begin
+reg_tmp_c <= a * b + c;
+end
+end
+endmodule
diff --git a/tests/arch/ecp5/macc.ys b/tests/arch/ecp5/macc.ys
new file mode 100644
index 0000000..1863ea4
--- /dev/null
+++ b/tests/arch/ecp5/macc.ys
@@ -0,0 +1,13 @@
+read_verilog macc.v
+hierarchy -top top
+proc
+# Blocked by issue #1358 (Missing ECP5 simulation models)
+#equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+equiv_opt -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 1 t:MULT18X18D
+select -assert-count 4 t:CCU2C
+select -assert-count 7 t:TRELLIS_FF
+
+select -assert-none t:CCU2C t:MULT18X18D t:TRELLIS_FF %% t:* %D
diff --git a/tests/arch/ecp5/memory.ys b/tests/arch/ecp5/memory.ys
new file mode 100644
index 0000000..c82b7b4
--- /dev/null
+++ b/tests/arch/ecp5/memory.ys
@@ -0,0 +1,19 @@
+read_verilog ../common/memory.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/ecp5/cells_sim.v synth_ecp5
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+sat -verify -prove-asserts -seq 5 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+select -assert-count 24 t:L6MUX21
+select -assert-count 71 t:LUT4
+select -assert-count 32 t:PFUMX
+select -assert-count 8 t:TRELLIS_DPR16X4
+select -assert-count 35 t:TRELLIS_FF
+select -assert-none t:L6MUX21 t:LUT4 t:PFUMX t:TRELLIS_DPR16X4 t:TRELLIS_FF %% t:* %D
diff --git a/tests/arch/ecp5/mul.ys b/tests/arch/ecp5/mul.ys
new file mode 100644
index 0000000..2105be5
--- /dev/null
+++ b/tests/arch/ecp5/mul.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/mul.v
+hierarchy -top top
+proc
+# Blocked by issue #1358 (Missing ECP5 simulation models)
+#equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+equiv_opt -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 1 t:MULT18X18D
+select -assert-none t:MULT18X18D %% t:* %D
diff --git a/tests/arch/ecp5/mux.ys b/tests/arch/ecp5/mux.ys
new file mode 100644
index 0000000..92463aa
--- /dev/null
+++ b/tests/arch/ecp5/mux.ys
@@ -0,0 +1,46 @@
+read_verilog ../common/mux.v
+design -save read
+
+hierarchy -top mux2
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux2 # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT4
+select -assert-none t:LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux4
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux4 # Constrain all select calls below inside the top module
+select -assert-count 1 t:L6MUX21
+select -assert-count 4 t:LUT4
+select -assert-count 2 t:PFUMX
+
+select -assert-none t:LUT4 t:L6MUX21 t:PFUMX %% t:* %D
+
+design -load read
+hierarchy -top mux8
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux8 # Constrain all select calls below inside the top module
+select -assert-count 1 t:L6MUX21
+select -assert-count 7 t:LUT4
+select -assert-count 2 t:PFUMX
+
+select -assert-none t:LUT4 t:L6MUX21 t:PFUMX %% t:* %D
+
+design -load read
+hierarchy -top mux16
+proc
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux16 # Constrain all select calls below inside the top module
+select -assert-count 8 t:L6MUX21
+select -assert-count 26 t:LUT4
+select -assert-count 12 t:PFUMX
+
+select -assert-none t:LUT4 t:L6MUX21 t:PFUMX %% t:* %D
diff --git a/tests/ice40/rom.v b/tests/arch/ecp5/rom.v
similarity index 100%
copy from tests/ice40/rom.v
copy to tests/arch/ecp5/rom.v
diff --git a/tests/arch/ecp5/rom.ys b/tests/arch/ecp5/rom.ys
new file mode 100644
index 0000000..98645ae
--- /dev/null
+++ b/tests/arch/ecp5/rom.ys
@@ -0,0 +1,10 @@
+read_verilog rom.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 6 t:LUT4
+select -assert-count 3 t:PFUMX
+select -assert-none t:LUT4 t:PFUMX %% t:* %D
diff --git a/tests/xilinx/run-test.sh b/tests/arch/ecp5/run-test.sh
similarity index 74%
copy from tests/xilinx/run-test.sh
copy to tests/arch/ecp5/run-test.sh
index ea56b70..bf19b88 100755
--- a/tests/xilinx/run-test.sh
+++ b/tests/arch/ecp5/run-test.sh
@@ -6,7 +6,7 @@
 	echo "all:: run-$x"
 	echo "run-$x:"
 	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log $x"
+	echo "	@../../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
 done
 for s in *.sh; do
 	if [ "$s" != "run-test.sh" ]; then
diff --git a/tests/arch/ecp5/shifter.ys b/tests/arch/ecp5/shifter.ys
new file mode 100644
index 0000000..3f0079f
--- /dev/null
+++ b/tests/arch/ecp5/shifter.ys
@@ -0,0 +1,10 @@
+read_verilog ../common/shifter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/ecp5/cells_sim.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+ 
+select -assert-count 8 t:TRELLIS_FF
+select -assert-none t:TRELLIS_FF %% t:* %D
diff --git a/tests/arch/ecp5/tribuf.ys b/tests/arch/ecp5/tribuf.ys
new file mode 100644
index 0000000..0118705
--- /dev/null
+++ b/tests/arch/ecp5/tribuf.ys
@@ -0,0 +1,9 @@
+read_verilog ../common/tribuf.v
+hierarchy -top tristate
+proc
+flatten
+equiv_opt -assert -map +/ecp5/cells_sim.v -map +/simcells.v synth_ecp5 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd tristate # Constrain all select calls below inside the top module
+select -assert-count 1 t:$_TBUF_
+select -assert-none t:$_TBUF_ %% t:* %D
diff --git a/tests/xilinx/.gitignore b/tests/arch/efinix/.gitignore
similarity index 74%
copy from tests/xilinx/.gitignore
copy to tests/arch/efinix/.gitignore
index 54733fb..b48f808 100644
--- a/tests/xilinx/.gitignore
+++ b/tests/arch/efinix/.gitignore
@@ -1,4 +1,3 @@
 /*.log
 /*.out
 /run-test.mk
-/*_uut.v
diff --git a/tests/arch/efinix/add_sub.ys b/tests/arch/efinix/add_sub.ys
new file mode 100644
index 0000000..20523c0
--- /dev/null
+++ b/tests/arch/efinix/add_sub.ys
@@ -0,0 +1,10 @@
+read_verilog ../common/add_sub.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 10 t:EFX_ADD
+select -assert-count 4  t:EFX_LUT4
+select -assert-none t:EFX_ADD t:EFX_LUT4 %% t:* %D
+
diff --git a/tests/arch/efinix/adffs.ys b/tests/arch/efinix/adffs.ys
new file mode 100644
index 0000000..49dc7f2
--- /dev/null
+++ b/tests/arch/efinix/adffs.ys
@@ -0,0 +1,50 @@
+read_verilog ../common/adffs.v
+design -save read
+
+hierarchy -top adff
+proc
+equiv_opt -async2sync -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adff # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE %% t:* %D
+
+
+design -load read
+hierarchy -top adffn
+proc
+equiv_opt -async2sync -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adffn # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE %% t:* %D
+
+
+design -load read
+hierarchy -top dffs
+proc
+equiv_opt -async2sync -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffs # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE t:EFX_LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top ndffnr
+proc
+equiv_opt -async2sync -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd ndffnr # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE t:EFX_LUT4 %% t:* %D
diff --git a/tests/arch/efinix/counter.ys b/tests/arch/efinix/counter.ys
new file mode 100644
index 0000000..d20b8ae
--- /dev/null
+++ b/tests/arch/efinix/counter.ys
@@ -0,0 +1,12 @@
+read_verilog ../common/counter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 8 t:EFX_FF
+select -assert-count 9 t:EFX_ADD
+select -assert-none t:EFX_GBUFCE t:EFX_FF t:EFX_ADD %% t:* %D
diff --git a/tests/arch/efinix/dffs.ys b/tests/arch/efinix/dffs.ys
new file mode 100644
index 0000000..af787ab
--- /dev/null
+++ b/tests/arch/efinix/dffs.ys
@@ -0,0 +1,24 @@
+read_verilog ../common/dffs.v
+design -save read
+
+hierarchy -top dff
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dff # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE %% t:* %D
+
+design -load read
+hierarchy -top dffe
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffe # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_FF
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_FF t:EFX_GBUFCE t:EFX_LUT4 %% t:* %D
diff --git a/tests/arch/efinix/fsm.ys b/tests/arch/efinix/fsm.ys
new file mode 100644
index 0000000..a8ba70f
--- /dev/null
+++ b/tests/arch/efinix/fsm.ys
@@ -0,0 +1,14 @@
+read_verilog ../common/fsm.v
+hierarchy -top fsm
+proc
+flatten
+#ERROR: Found 4 unproven $equiv cells in 'equiv_status -assert'.
+#equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+equiv_opt -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd fsm # Constrain all select calls below inside the top module
+
+select -assert-count 1  t:EFX_GBUFCE
+select -assert-count 6  t:EFX_FF
+select -assert-count 15 t:EFX_LUT4
+select -assert-none t:EFX_GBUFCE t:EFX_FF t:EFX_LUT4 %% t:* %D
diff --git a/tests/arch/efinix/latches.ys b/tests/arch/efinix/latches.ys
new file mode 100644
index 0000000..1b1c000
--- /dev/null
+++ b/tests/arch/efinix/latches.ys
@@ -0,0 +1,33 @@
+read_verilog ../common/latches.v
+design -save read
+
+hierarchy -top latchp
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_efinix
+cd latchp # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchn
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_efinix
+cd latchn # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchsr
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_efinix
+cd latchsr # Constrain all select calls below inside the top module
+select -assert-count 2 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
diff --git a/tests/arch/efinix/logic.ys b/tests/arch/efinix/logic.ys
new file mode 100644
index 0000000..76e98e0
--- /dev/null
+++ b/tests/arch/efinix/logic.ys
@@ -0,0 +1,9 @@
+read_verilog ../common/logic.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 9 t:EFX_LUT4
+select -assert-none t:EFX_LUT4 %% t:* %D
diff --git a/tests/arch/efinix/memory.ys b/tests/arch/efinix/memory.ys
new file mode 100644
index 0000000..6f6acdc
--- /dev/null
+++ b/tests/arch/efinix/memory.ys
@@ -0,0 +1,18 @@
+read_verilog ../common/memory.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/efinix/cells_sim.v synth_efinix
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+#ERROR: Called with -verify and proof did fail!
+#sat -verify -prove-asserts -seq 5 -set-init-zero -show-inputs -show-outputs miter
+sat -prove-asserts -seq 5 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+select -assert-count 1 t:EFX_GBUFCE
+select -assert-count 1 t:EFX_RAM_5K
+select -assert-none t:EFX_GBUFCE t:EFX_RAM_5K %% t:* %D
diff --git a/tests/arch/efinix/mux.ys b/tests/arch/efinix/mux.ys
new file mode 100644
index 0000000..b46f641
--- /dev/null
+++ b/tests/arch/efinix/mux.ys
@@ -0,0 +1,41 @@
+read_verilog ../common/mux.v
+design -save read
+
+hierarchy -top mux2
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux2 # Constrain all select calls below inside the top module
+select -assert-count 1 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux4
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux4 # Constrain all select calls below inside the top module
+select -assert-count 2 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux8
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux8 # Constrain all select calls below inside the top module
+select -assert-count 5 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux16
+proc
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux16 # Constrain all select calls below inside the top module
+select -assert-count 12 t:EFX_LUT4
+
+select -assert-none t:EFX_LUT4 %% t:* %D
diff --git a/tests/xilinx/run-test.sh b/tests/arch/efinix/run-test.sh
similarity index 74%
copy from tests/xilinx/run-test.sh
copy to tests/arch/efinix/run-test.sh
index ea56b70..bf19b88 100755
--- a/tests/xilinx/run-test.sh
+++ b/tests/arch/efinix/run-test.sh
@@ -6,7 +6,7 @@
 	echo "all:: run-$x"
 	echo "run-$x:"
 	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log $x"
+	echo "	@../../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
 done
 for s in *.sh; do
 	if [ "$s" != "run-test.sh" ]; then
diff --git a/tests/arch/efinix/shifter.ys b/tests/arch/efinix/shifter.ys
new file mode 100644
index 0000000..54f7116
--- /dev/null
+++ b/tests/arch/efinix/shifter.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/shifter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1  t:EFX_GBUFCE
+select -assert-count 8  t:EFX_FF
+select -assert-none t:EFX_GBUFCE t:EFX_FF %% t:* %D
diff --git a/tests/arch/efinix/tribuf.ys b/tests/arch/efinix/tribuf.ys
new file mode 100644
index 0000000..47904f2
--- /dev/null
+++ b/tests/arch/efinix/tribuf.ys
@@ -0,0 +1,12 @@
+read_verilog ../common/tribuf.v
+hierarchy -top tristate
+proc
+tribuf
+flatten
+synth
+equiv_opt -assert -map +/efinix/cells_sim.v -map +/simcells.v synth_efinix # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd tristate # Constrain all select calls below inside the top module
+#Internal cell type used. Need support it.
+select -assert-count 1 t:$_TBUF_
+select -assert-none t:$_TBUF_ %% t:* %D
diff --git a/tests/ice40/.gitignore b/tests/arch/ice40/.gitignore
similarity index 100%
rename from tests/ice40/.gitignore
rename to tests/arch/ice40/.gitignore
diff --git a/tests/ice40/add_sub.ys b/tests/arch/ice40/add_sub.ys
similarity index 91%
rename from tests/ice40/add_sub.ys
rename to tests/arch/ice40/add_sub.ys
index 4a998d9..578ec08 100644
--- a/tests/ice40/add_sub.ys
+++ b/tests/arch/ice40/add_sub.ys
@@ -1,4 +1,4 @@
-read_verilog add_sub.v
+read_verilog ../common/add_sub.v
 hierarchy -top top
 equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
diff --git a/tests/arch/ice40/adffs.ys b/tests/arch/ice40/adffs.ys
new file mode 100644
index 0000000..e5dbabb
--- /dev/null
+++ b/tests/arch/ice40/adffs.ys
@@ -0,0 +1,39 @@
+read_verilog ../common/adffs.v
+design -save read
+
+hierarchy -top adff
+proc
+equiv_opt -async2sync -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adff # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFFR
+select -assert-none t:SB_DFFR %% t:* %D
+
+design -load read
+hierarchy -top adffn
+proc
+equiv_opt -async2sync -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adffn # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFFR
+select -assert-count 1 t:SB_LUT4
+select -assert-none t:SB_DFFR t:SB_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top dffs
+proc
+equiv_opt -async2sync -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffs # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFFSS
+select -assert-none t:SB_DFFSS %% t:* %D
+
+design -load read
+hierarchy -top ndffnr
+proc
+equiv_opt -async2sync -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd ndffnr # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFFNSR
+select -assert-count 1 t:SB_LUT4
+select -assert-none t:SB_DFFNSR t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/counter.ys b/tests/arch/ice40/counter.ys
similarity index 92%
rename from tests/ice40/counter.ys
rename to tests/arch/ice40/counter.ys
index c65c216..f112eb9 100644
--- a/tests/ice40/counter.ys
+++ b/tests/arch/ice40/counter.ys
@@ -1,4 +1,4 @@
-read_verilog counter.v
+read_verilog ../common/counter.v
 hierarchy -top top
 proc
 flatten
diff --git a/tests/arch/ice40/dffs.ys b/tests/arch/ice40/dffs.ys
new file mode 100644
index 0000000..b28a5a9
--- /dev/null
+++ b/tests/arch/ice40/dffs.ys
@@ -0,0 +1,19 @@
+read_verilog ../common/dffs.v
+design -save read
+
+hierarchy -top dff
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dff # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFF
+select -assert-none t:SB_DFF %% t:* %D
+
+design -load read
+hierarchy -top dffe
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffe # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_DFFE
+select -assert-none t:SB_DFFE %% t:* %D
\ No newline at end of file
diff --git a/tests/ice40/dpram.v b/tests/arch/ice40/dpram.v
similarity index 100%
rename from tests/ice40/dpram.v
rename to tests/arch/ice40/dpram.v
diff --git a/tests/ice40/dpram.ys b/tests/arch/ice40/dpram.ys
similarity index 100%
rename from tests/ice40/dpram.ys
rename to tests/arch/ice40/dpram.ys
diff --git a/tests/ice40/fsm.ys b/tests/arch/ice40/fsm.ys
similarity index 77%
rename from tests/ice40/fsm.ys
rename to tests/arch/ice40/fsm.ys
index 4cc8629..5aacc6c 100644
--- a/tests/ice40/fsm.ys
+++ b/tests/arch/ice40/fsm.ys
@@ -1,10 +1,10 @@
-read_verilog fsm.v
-hierarchy -top top
+read_verilog ../common/fsm.v
+hierarchy -top fsm
 proc
 flatten
 equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
+cd fsm # Constrain all select calls below inside the top module
 
 select -assert-count 2 t:SB_DFFESR
 select -assert-count 2 t:SB_DFFSR
diff --git a/tests/ice40/ice40_opt.ys b/tests/arch/ice40/ice40_opt.ys
similarity index 100%
rename from tests/ice40/ice40_opt.ys
rename to tests/arch/ice40/ice40_opt.ys
diff --git a/tests/arch/ice40/latches.ys b/tests/arch/ice40/latches.ys
new file mode 100644
index 0000000..b06dd63
--- /dev/null
+++ b/tests/arch/ice40/latches.ys
@@ -0,0 +1,33 @@
+read_verilog ../common/latches.v
+design -save read
+
+hierarchy -top latchp
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ice40
+cd latchp # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchn
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ice40
+cd latchn # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
+
+
+design -load read
+hierarchy -top latchsr
+proc
+# Can't run any sort of equivalence check because latches are blown to LUTs
+synth_ice40
+cd latchsr # Constrain all select calls below inside the top module
+select -assert-count 2 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/logic.ys b/tests/arch/ice40/logic.ys
similarity index 91%
rename from tests/ice40/logic.ys
rename to tests/arch/ice40/logic.ys
index fc5e5b1..7432f5b 100644
--- a/tests/ice40/logic.ys
+++ b/tests/arch/ice40/logic.ys
@@ -1,4 +1,4 @@
-read_verilog logic.v
+read_verilog ../common/logic.v
 hierarchy -top top
 equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
diff --git a/tests/ice40/macc.v b/tests/arch/ice40/macc.v
similarity index 100%
rename from tests/ice40/macc.v
rename to tests/arch/ice40/macc.v
diff --git a/tests/ice40/macc.ys b/tests/arch/ice40/macc.ys
similarity index 100%
rename from tests/ice40/macc.ys
rename to tests/arch/ice40/macc.ys
diff --git a/tests/ice40/memory.ys b/tests/arch/ice40/memory.ys
similarity index 91%
rename from tests/ice40/memory.ys
rename to tests/arch/ice40/memory.ys
index a66afba..c356e67 100644
--- a/tests/ice40/memory.ys
+++ b/tests/arch/ice40/memory.ys
@@ -1,4 +1,4 @@
-read_verilog memory.v
+read_verilog ../common/memory.v
 hierarchy -top top
 proc
 memory -nomap
diff --git a/tests/ice40/mul.ys b/tests/arch/ice40/mul.ys
similarity index 91%
rename from tests/ice40/mul.ys
rename to tests/arch/ice40/mul.ys
index 8a0822a..9891b77 100644
--- a/tests/ice40/mul.ys
+++ b/tests/arch/ice40/mul.ys
@@ -1,4 +1,4 @@
-read_verilog mul.v
+read_verilog ../common/mul.v
 hierarchy -top top
 equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 -dsp # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
diff --git a/tests/arch/ice40/mux.ys b/tests/arch/ice40/mux.ys
new file mode 100644
index 0000000..9982239
--- /dev/null
+++ b/tests/arch/ice40/mux.ys
@@ -0,0 +1,40 @@
+read_verilog ../common/mux.v
+design -save read
+
+hierarchy -top mux2
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux2 # Constrain all select calls below inside the top module
+select -assert-count 1 t:SB_LUT4
+select -assert-none t:SB_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux4
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux4 # Constrain all select calls below inside the top module
+select -assert-count 2 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux8
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux8 # Constrain all select calls below inside the top module
+select -assert-count 5 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
+
+design -load read
+hierarchy -top mux16
+proc
+equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux16 # Constrain all select calls below inside the top module
+select -assert-count 11 t:SB_LUT4
+
+select -assert-none t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/rom.v b/tests/arch/ice40/rom.v
similarity index 100%
rename from tests/ice40/rom.v
rename to tests/arch/ice40/rom.v
diff --git a/tests/ice40/rom.ys b/tests/arch/ice40/rom.ys
similarity index 100%
rename from tests/ice40/rom.ys
rename to tests/arch/ice40/rom.ys
diff --git a/tests/xilinx/run-test.sh b/tests/arch/ice40/run-test.sh
similarity index 74%
copy from tests/xilinx/run-test.sh
copy to tests/arch/ice40/run-test.sh
index ea56b70..bf19b88 100755
--- a/tests/xilinx/run-test.sh
+++ b/tests/arch/ice40/run-test.sh
@@ -6,7 +6,7 @@
 	echo "all:: run-$x"
 	echo "run-$x:"
 	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log $x"
+	echo "	@../../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
 done
 for s in *.sh; do
 	if [ "$s" != "run-test.sh" ]; then
diff --git a/tests/ice40/shifter.ys b/tests/arch/ice40/shifter.ys
similarity index 90%
rename from tests/ice40/shifter.ys
rename to tests/arch/ice40/shifter.ys
index 47d95d2..08ea64f 100644
--- a/tests/ice40/shifter.ys
+++ b/tests/arch/ice40/shifter.ys
@@ -1,4 +1,4 @@
-read_verilog shifter.v
+read_verilog ../common/shifter.v
 hierarchy -top top
 proc
 flatten
diff --git a/tests/ice40/tribuf.ys b/tests/arch/ice40/tribuf.ys
similarity index 66%
rename from tests/ice40/tribuf.ys
rename to tests/arch/ice40/tribuf.ys
index d1e1b31..10cded9 100644
--- a/tests/ice40/tribuf.ys
+++ b/tests/arch/ice40/tribuf.ys
@@ -1,9 +1,11 @@
-read_verilog tribuf.v
-hierarchy -top top
+read_verilog ../common/tribuf.v
+hierarchy -top tristate
 proc
+tribuf
 flatten
+synth
 equiv_opt -assert -map +/ice40/cells_sim.v -map +/simcells.v synth_ice40 # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
+cd tristate # Constrain all select calls below inside the top module
 select -assert-count 1 t:$_TBUF_
 select -assert-none t:$_TBUF_ %% t:* %D
diff --git a/tests/ice40/wrapcarry.ys b/tests/arch/ice40/wrapcarry.ys
similarity index 100%
rename from tests/ice40/wrapcarry.ys
rename to tests/arch/ice40/wrapcarry.ys
diff --git a/tests/xilinx/.gitignore b/tests/arch/xilinx/.gitignore
similarity index 76%
rename from tests/xilinx/.gitignore
rename to tests/arch/xilinx/.gitignore
index 54733fb..c99b793 100644
--- a/tests/xilinx/.gitignore
+++ b/tests/arch/xilinx/.gitignore
@@ -2,3 +2,4 @@
 /*.out
 /run-test.mk
 /*_uut.v
+/test_macc
diff --git a/tests/arch/xilinx/add_sub.ys b/tests/arch/xilinx/add_sub.ys
new file mode 100644
index 0000000..9dbddce
--- /dev/null
+++ b/tests/arch/xilinx/add_sub.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/add_sub.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 14 t:LUT2
+select -assert-count 6 t:MUXCY
+select -assert-count 8 t:XORCY
+select -assert-none t:LUT2 t:MUXCY t:XORCY %% t:* %D
+
diff --git a/tests/arch/xilinx/adffs.ys b/tests/arch/xilinx/adffs.ys
new file mode 100644
index 0000000..12c3441
--- /dev/null
+++ b/tests/arch/xilinx/adffs.ys
@@ -0,0 +1,51 @@
+read_verilog ../common/adffs.v
+design -save read
+
+hierarchy -top adff
+proc
+equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adff # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDCE
+
+select -assert-none t:BUFG t:FDCE %% t:* %D
+
+
+design -load read
+hierarchy -top adffn
+proc
+equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd adffn # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDCE
+select -assert-count 1 t:LUT1
+
+select -assert-none t:BUFG t:FDCE t:LUT1 %% t:* %D
+
+
+design -load read
+hierarchy -top dffs
+proc
+equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffs # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDRE
+select -assert-count 1 t:LUT2
+
+select -assert-none t:BUFG t:FDRE t:LUT2 %% t:* %D
+
+
+design -load read
+hierarchy -top ndffnr
+proc
+equiv_opt -async2sync  -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd ndffnr # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDRE_1
+select -assert-count 1 t:LUT2
+
+select -assert-none t:BUFG t:FDRE_1 t:LUT2 %% t:* %D
diff --git a/tests/arch/xilinx/counter.ys b/tests/arch/xilinx/counter.ys
new file mode 100644
index 0000000..57b645d
--- /dev/null
+++ b/tests/arch/xilinx/counter.ys
@@ -0,0 +1,14 @@
+read_verilog ../common/counter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDCE
+select -assert-count 1 t:LUT1
+select -assert-count 7 t:MUXCY
+select -assert-count 8 t:XORCY
+select -assert-none t:BUFG t:FDCE t:LUT1 t:MUXCY t:XORCY %% t:* %D
diff --git a/tests/arch/xilinx/dffs.ys b/tests/arch/xilinx/dffs.ys
new file mode 100644
index 0000000..0bba485
--- /dev/null
+++ b/tests/arch/xilinx/dffs.ys
@@ -0,0 +1,25 @@
+read_verilog ../common/dffs.v
+design -save read
+
+hierarchy -top dff
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dff # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDRE
+
+select -assert-none t:BUFG t:FDRE %% t:* %D
+
+
+design -load read
+hierarchy -top dffe
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd dffe # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 1 t:FDRE
+
+select -assert-none t:BUFG t:FDRE %% t:* %D
+
diff --git a/tests/xilinx/dsp_simd.ys b/tests/arch/xilinx/dsp_simd.ys
similarity index 100%
rename from tests/xilinx/dsp_simd.ys
rename to tests/arch/xilinx/dsp_simd.ys
diff --git a/tests/arch/xilinx/fsm.ys b/tests/arch/xilinx/fsm.ys
new file mode 100644
index 0000000..d2b4814
--- /dev/null
+++ b/tests/arch/xilinx/fsm.ys
@@ -0,0 +1,14 @@
+read_verilog ../common/fsm.v
+hierarchy -top fsm
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd fsm # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 5 t:FDRE
+select -assert-count 1 t:LUT3
+select -assert-count 2 t:LUT4
+select -assert-count 4 t:LUT6
+select -assert-none t:BUFG t:FDRE t:LUT3 t:LUT4 t:LUT6 %% t:* %D
diff --git a/tests/arch/xilinx/latches.ys b/tests/arch/xilinx/latches.ys
new file mode 100644
index 0000000..fe7887e
--- /dev/null
+++ b/tests/arch/xilinx/latches.ys
@@ -0,0 +1,35 @@
+read_verilog ../common/latches.v
+design -save read
+
+hierarchy -top latchp
+proc
+equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd latchp # Constrain all select calls below inside the top module
+select -assert-count 1 t:LDCE
+
+select -assert-none t:LDCE %% t:* %D
+
+
+design -load read
+hierarchy -top latchn
+proc
+equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd latchn # Constrain all select calls below inside the top module
+select -assert-count 1 t:LDCE
+select -assert-count 1 t:LUT1
+
+select -assert-none t:LDCE t:LUT1 %% t:* %D
+
+
+design -load read
+hierarchy -top latchsr
+proc
+equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd latchsr # Constrain all select calls below inside the top module
+select -assert-count 1 t:LDCE
+select -assert-count 2 t:LUT3
+
+select -assert-none t:LDCE t:LUT3 %% t:* %D
diff --git a/tests/arch/xilinx/logic.ys b/tests/arch/xilinx/logic.ys
new file mode 100644
index 0000000..c0f6da3
--- /dev/null
+++ b/tests/arch/xilinx/logic.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/logic.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:LUT1
+select -assert-count 6 t:LUT2
+select -assert-count 2 t:LUT4
+select -assert-none t:LUT1 t:LUT2 t:LUT4 %% t:* %D
diff --git a/tests/arch/xilinx/macc.sh b/tests/arch/xilinx/macc.sh
new file mode 100644
index 0000000..2272679
--- /dev/null
+++ b/tests/arch/xilinx/macc.sh
@@ -0,0 +1,3 @@
+../../../yosys -qp "synth_xilinx -top macc2; rename -top macc2_uut" macc.v -o macc_uut.v
+iverilog -o test_macc macc_tb.v macc_uut.v macc.v ../../../techlibs/xilinx/cells_sim.v
+vvp -N ./test_macc
diff --git a/tests/xilinx/macc.v b/tests/arch/xilinx/macc.v
similarity index 100%
rename from tests/xilinx/macc.v
rename to tests/arch/xilinx/macc.v
diff --git a/tests/xilinx/macc.ys b/tests/arch/xilinx/macc.ys
similarity index 99%
rename from tests/xilinx/macc.ys
rename to tests/arch/xilinx/macc.ys
index 417a3b2..6e884b3 100644
--- a/tests/xilinx/macc.ys
+++ b/tests/arch/xilinx/macc.ys
@@ -1,8 +1,8 @@
 read_verilog macc.v
 design -save read
 
-proc
 hierarchy -top macc
+proc
 #equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx ### TODO
 equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx
 miter -equiv -flatten -make_assert -make_outputs gold gate miter
@@ -15,8 +15,8 @@
 select -assert-none t:BUFG t:FDRE t:DSP48E1 %% t:* %D
 
 design -load read
-proc
 hierarchy -top macc2
+proc
 #equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx ### TODO
 equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx
 miter -equiv -flatten -make_assert -make_outputs gold gate miter
diff --git a/tests/xilinx/macc_tb.v b/tests/arch/xilinx/macc_tb.v
similarity index 100%
rename from tests/xilinx/macc_tb.v
rename to tests/arch/xilinx/macc_tb.v
diff --git a/tests/arch/xilinx/memory.ys b/tests/arch/xilinx/memory.ys
new file mode 100644
index 0000000..da1ed0e
--- /dev/null
+++ b/tests/arch/xilinx/memory.ys
@@ -0,0 +1,17 @@
+read_verilog ../common/memory.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+sat -verify -prove-asserts -seq 5 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDRE
+select -assert-count 8 t:RAM64X1D
+select -assert-none t:BUFG t:FDRE t:RAM64X1D %% t:* %D
diff --git a/tests/arch/xilinx/mul.ys b/tests/arch/xilinx/mul.ys
new file mode 100644
index 0000000..d768149
--- /dev/null
+++ b/tests/arch/xilinx/mul.ys
@@ -0,0 +1,9 @@
+read_verilog ../common/mul.v
+hierarchy -top top
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:DSP48E1
+select -assert-none t:DSP48E1 %% t:* %D
diff --git a/tests/xilinx/mul_unsigned.v b/tests/arch/xilinx/mul_unsigned.v
similarity index 100%
rename from tests/xilinx/mul_unsigned.v
rename to tests/arch/xilinx/mul_unsigned.v
diff --git a/tests/xilinx/mul_unsigned.ys b/tests/arch/xilinx/mul_unsigned.ys
similarity index 99%
rename from tests/xilinx/mul_unsigned.ys
rename to tests/arch/xilinx/mul_unsigned.ys
index 77990bd..62495b9 100644
--- a/tests/xilinx/mul_unsigned.ys
+++ b/tests/arch/xilinx/mul_unsigned.ys
@@ -1,6 +1,7 @@
 read_verilog mul_unsigned.v
-proc
 hierarchy -top mul_unsigned
+proc
+
 equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
 cd mul_unsigned # Constrain all select calls below inside the top module
diff --git a/tests/arch/xilinx/mux.ys b/tests/arch/xilinx/mux.ys
new file mode 100644
index 0000000..821d0fa
--- /dev/null
+++ b/tests/arch/xilinx/mux.ys
@@ -0,0 +1,45 @@
+read_verilog ../common/mux.v
+design -save read
+
+hierarchy -top mux2
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux2 # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT3
+
+select -assert-none t:LUT3 %% t:* %D
+
+
+design -load read
+hierarchy -top mux4
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux4 # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT6
+
+select -assert-none t:LUT6 %% t:* %D
+
+
+design -load read
+hierarchy -top mux8
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux8 # Constrain all select calls below inside the top module
+select -assert-count 1 t:LUT3
+select -assert-count 2 t:LUT6
+
+select -assert-none t:LUT3 t:LUT6 %% t:* %D
+
+
+design -load read
+hierarchy -top mux16
+proc
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd mux16 # Constrain all select calls below inside the top module
+select -assert-count 5 t:LUT6
+
+select -assert-none t:LUT6 %% t:* %D
diff --git a/tests/xilinx/pmgen_xilinx_srl.ys b/tests/arch/xilinx/pmgen_xilinx_srl.ys
similarity index 100%
rename from tests/xilinx/pmgen_xilinx_srl.ys
rename to tests/arch/xilinx/pmgen_xilinx_srl.ys
diff --git a/tests/xilinx/run-test.sh b/tests/arch/xilinx/run-test.sh
similarity index 74%
copy from tests/xilinx/run-test.sh
copy to tests/arch/xilinx/run-test.sh
index ea56b70..bf19b88 100755
--- a/tests/xilinx/run-test.sh
+++ b/tests/arch/xilinx/run-test.sh
@@ -6,7 +6,7 @@
 	echo "all:: run-$x"
 	echo "run-$x:"
 	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log $x"
+	echo "	@../../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
 done
 for s in *.sh; do
 	if [ "$s" != "run-test.sh" ]; then
diff --git a/tests/arch/xilinx/shifter.ys b/tests/arch/xilinx/shifter.ys
new file mode 100644
index 0000000..455437f
--- /dev/null
+++ b/tests/arch/xilinx/shifter.ys
@@ -0,0 +1,11 @@
+read_verilog ../common/shifter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDRE
+select -assert-none t:BUFG t:FDRE %% t:* %D
diff --git a/tests/arch/xilinx/tribuf.ys b/tests/arch/xilinx/tribuf.ys
new file mode 100644
index 0000000..4697703
--- /dev/null
+++ b/tests/arch/xilinx/tribuf.ys
@@ -0,0 +1,12 @@
+read_verilog ../common/tribuf.v
+hierarchy -top tristate
+proc
+tribuf
+flatten
+synth
+equiv_opt -assert -map +/xilinx/cells_sim.v -map +/simcells.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd tristate # Constrain all select calls below inside the top module
+# TODO :: Tristate logic not yet supported; see https://github.com/YosysHQ/yosys/issues/1225
+select -assert-count 1 t:$_TBUF_
+select -assert-none t:$_TBUF_ %% t:* %D
diff --git a/tests/xilinx/xilinx_srl.v b/tests/arch/xilinx/xilinx_srl.v
similarity index 100%
rename from tests/xilinx/xilinx_srl.v
rename to tests/arch/xilinx/xilinx_srl.v
diff --git a/tests/xilinx/xilinx_srl.ys b/tests/arch/xilinx/xilinx_srl.ys
similarity index 100%
rename from tests/xilinx/xilinx_srl.ys
rename to tests/arch/xilinx/xilinx_srl.ys
diff --git a/tests/ice40/add_sub.v b/tests/ice40/add_sub.v
deleted file mode 100644
index 177c32e..0000000
--- a/tests/ice40/add_sub.v
+++ /dev/null
@@ -1,13 +0,0 @@
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A =  x + y;
-assign B =  x - y;
-
-endmodule
diff --git a/tests/ice40/adffs.v b/tests/ice40/adffs.v
deleted file mode 100644
index 09dc360..0000000
--- a/tests/ice40/adffs.v
+++ /dev/null
@@ -1,87 +0,0 @@
-module adff
-    ( input d, clk, clr, output reg q );
-    initial begin
-      q = 0;
-    end
-	always @( posedge clk, posedge clr )
-		if ( clr )
-			q <= 1'b0;
-		else
-            q <= d;
-endmodule
-
-module adffn
-    ( input d, clk, clr, output reg q );
-    initial begin
-      q = 0;
-    end
-	always @( posedge clk, negedge clr )
-		if ( !clr )
-			q <= 1'b0;
-		else
-            q <= d;
-endmodule
-
-module dffs
-    ( input d, clk, pre, clr, output reg q );
-    initial begin
-      q = 0;
-    end
-	always @( posedge clk, posedge pre )
-		if ( pre )
-			q <= 1'b1;
-		else
-            q <= d;
-endmodule
-
-module ndffnr
-    ( input d, clk, pre, clr, output reg q );
-    initial begin
-      q = 0;
-    end
-	always @( negedge clk, negedge pre )
-		if ( !pre )
-			q <= 1'b1;
-		else
-            q <= d;
-endmodule
-
-module top (
-input clk,
-input clr,
-input pre,
-input a,
-output b,b1,b2,b3
-);
-
-dffs u_dffs (
-        .clk (clk ),
-        .clr (clr),
-        .pre (pre),
-        .d (a ),
-        .q (b )
-    );
-
-ndffnr u_ndffnr (
-        .clk (clk ),
-        .clr (clr),
-        .pre (pre),
-        .d (a ),
-        .q (b1 )
-    );
-
-adff u_adff (
-        .clk (clk ),
-        .clr (clr),
-        .d (a ),
-        .q (b2 )
-    );
-
-adffn u_adffn (
-        .clk (clk ),
-        .clr (clr),
-        .d (a ),
-        .q (b3 )
-    );
-
-endmodule
diff --git a/tests/ice40/adffs.ys b/tests/ice40/adffs.ys
deleted file mode 100644
index 548060b..0000000
--- a/tests/ice40/adffs.ys
+++ /dev/null
@@ -1,11 +0,0 @@
-read_verilog adffs.v
-proc
-flatten
-equiv_opt -multiclock -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 1 t:SB_DFFNS
-select -assert-count 2 t:SB_DFFR
-select -assert-count 1 t:SB_DFFS
-select -assert-count 2 t:SB_LUT4
-select -assert-none t:SB_DFFNS t:SB_DFFR t:SB_DFFS t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/alu.v b/tests/ice40/alu.v
deleted file mode 100644
index f82cc2e..0000000
--- a/tests/ice40/alu.v
+++ /dev/null
@@ -1,19 +0,0 @@
-module top (
-	input clock,
-	input [31:0] dinA, dinB,
-	input [2:0] opcode,
-	output reg [31:0] dout
-);
-	always @(posedge clock) begin
-		case (opcode)
-		0: dout <= dinA + dinB;
-		1: dout <= dinA - dinB;
-		2: dout <= dinA >> dinB;
-		3: dout <= $signed(dinA) >>> dinB;
-		4: dout <= dinA << dinB;
-		5: dout <= dinA & dinB;
-		6: dout <= dinA | dinB;
-		7: dout <= dinA ^ dinB;
-		endcase
-	end
-endmodule
diff --git a/tests/ice40/alu.ys b/tests/ice40/alu.ys
deleted file mode 100644
index bd859ef..0000000
--- a/tests/ice40/alu.ys
+++ /dev/null
@@ -1,11 +0,0 @@
-read_verilog alu.v
-hierarchy -top top
-proc
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 62 t:SB_CARRY
-select -assert-count 32 t:SB_DFF
-select -assert-count 655 t:SB_LUT4
-select -assert-none t:SB_CARRY t:SB_DFF t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/counter.v b/tests/ice40/counter.v
deleted file mode 100644
index 52852f8..0000000
--- a/tests/ice40/counter.v
+++ /dev/null
@@ -1,17 +0,0 @@
-module top    (

-out,

-clk,

-reset

-);

-    output [7:0] out;

-    input clk, reset;

-    reg [7:0] out;

-

-    always @(posedge clk, posedge reset)

-		if (reset) begin

-			out <= 8'b0 ;

-		end else

-			out <= out + 1;

-

-

-endmodule

diff --git a/tests/ice40/dffs.v b/tests/ice40/dffs.v
deleted file mode 100644
index d97840c..0000000
--- a/tests/ice40/dffs.v
+++ /dev/null
@@ -1,37 +0,0 @@
-module dff
-    ( input d, clk, output reg q );
-	always @( posedge clk )
-            q <= d;
-endmodule
-
-module dffe
-    ( input d, clk, en, output reg q );
-    initial begin
-      q = 0;
-    end
-	always @( posedge clk )
-		if ( en )
-			q <= d;
-endmodule
-
-module top (
-input clk,
-input en,
-input a,
-output b,b1,
-);
-
-dff u_dff (
-        .clk (clk ),
-        .d (a ),
-        .q (b )
-    );
-
-dffe u_ndffe (
-        .clk (clk ),
-        .en (en),
-        .d (a ),
-        .q (b1 )
-    );
-
-endmodule
diff --git a/tests/ice40/dffs.ys b/tests/ice40/dffs.ys
deleted file mode 100644
index ee7f884..0000000
--- a/tests/ice40/dffs.ys
+++ /dev/null
@@ -1,10 +0,0 @@
-read_verilog dffs.v
-hierarchy -top top
-proc
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 1 t:SB_DFF
-select -assert-count 1 t:SB_DFFE
-select -assert-none t:SB_DFF t:SB_DFFE %% t:* %D
diff --git a/tests/ice40/div_mod.v b/tests/ice40/div_mod.v
deleted file mode 100644
index 64a3670..0000000
--- a/tests/ice40/div_mod.v
+++ /dev/null
@@ -1,13 +0,0 @@
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A =  x % y;
-assign B =  x / y;
-
-endmodule
diff --git a/tests/ice40/div_mod.ys b/tests/ice40/div_mod.ys
deleted file mode 100644
index 821d6c3..0000000
--- a/tests/ice40/div_mod.ys
+++ /dev/null
@@ -1,9 +0,0 @@
-read_verilog div_mod.v
-hierarchy -top top
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 59 t:SB_LUT4
-select -assert-count 41 t:SB_CARRY
-select -assert-none t:SB_LUT4 t:SB_CARRY %% t:* %D
diff --git a/tests/ice40/fsm.v b/tests/ice40/fsm.v
deleted file mode 100644
index 0605bd1..0000000
--- a/tests/ice40/fsm.v
+++ /dev/null
@@ -1,73 +0,0 @@
- module fsm (

- clock,

- reset,

- req_0,

- req_1,

- gnt_0,

- gnt_1

- );

- input   clock,reset,req_0,req_1;

- output  gnt_0,gnt_1;

- wire    clock,reset,req_0,req_1;

- reg     gnt_0,gnt_1;

-

- parameter SIZE = 3           ;

- parameter IDLE  = 3'b001,GNT0 = 3'b010,GNT1 = 3'b100,GNT2 = 3'b101 ;

-

- reg [SIZE-1:0] state;

- reg [SIZE-1:0] next_state;

-

- always @ (posedge clock)

- begin : FSM

- if (reset == 1'b1) begin

-   state <=  #1  IDLE;

-   gnt_0 <= 0;

-   gnt_1 <= 0;

- end else

-  case(state)

-    IDLE : if (req_0 == 1'b1) begin

-                 state <=  #1  GNT0;

-                 gnt_0 <= 1;

-               end else if (req_1 == 1'b1) begin

-                 gnt_1 <= 1;

-                 state <=  #1  GNT0;

-               end else begin

-                 state <=  #1  IDLE;

-               end

-    GNT0 : if (req_0 == 1'b1) begin

-                 state <=  #1  GNT0;

-               end else begin

-                 gnt_0 <= 0;

-                 state <=  #1  IDLE;

-               end

-    GNT1 : if (req_1 == 1'b1) begin

-                 state <=  #1  GNT2;

-				 gnt_1 <= req_0;

-               end

-    GNT2 : if (req_0 == 1'b1) begin

-                 state <=  #1  GNT1;

-				 gnt_1 <= req_1;

-               end

-    default : state <=  #1  IDLE;

- endcase

- end

-

- endmodule

-

- module top (

-input clk,

-input rst,

-input a,

-input b,

-output g0,

-output g1

-);

-

-fsm u_fsm ( .clock(clk),

-            .reset(rst),

-            .req_0(a),

-            .req_1(b),

-            .gnt_0(g0),

-            .gnt_1(g1));

-

-endmodule

diff --git a/tests/ice40/latches.v b/tests/ice40/latches.v
deleted file mode 100644
index 9dc43e4..0000000
--- a/tests/ice40/latches.v
+++ /dev/null
@@ -1,58 +0,0 @@
-module latchp
-    ( input d, clk, en, output reg q );
-	always @*
-		if ( en )
-			q <= d;
-endmodule
-
-module latchn
-    ( input d, clk, en, output reg q );
-	always @*
-		if ( !en )
-			q <= d;
-endmodule
-
-module latchsr
-    ( input d, clk, en, clr, pre, output reg q );
-	always @*
-		if ( clr )
-			q <= 1'b0;
-		else if ( pre )
-			q <= 1'b1;
-		else if ( en )
-			q <= d;
-endmodule
-
-
-module top (
-input clk,
-input clr,
-input pre,
-input a,
-output b,b1,b2
-);
-
-
-latchp u_latchp (
-        .en (clk ),
-        .d (a ),
-        .q (b )
-    );
-
-
-latchn u_latchn (
-        .en (clk ),
-        .d (a ),
-        .q (b1 )
-    );
-
-
-latchsr u_latchsr (
-        .en (clk ),
-        .clr (clr),
-        .pre (pre),
-        .d (a ),
-        .q (b2 )
-    );
-
-endmodule
diff --git a/tests/ice40/latches.ys b/tests/ice40/latches.ys
deleted file mode 100644
index 708734e..0000000
--- a/tests/ice40/latches.ys
+++ /dev/null
@@ -1,12 +0,0 @@
-read_verilog latches.v
-
-proc
-flatten
-# Can't run any sort of equivalence check because latches are blown to LUTs
-#equiv_opt -async2sync -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-
-#design -load preopt
-synth_ice40
-cd top
-select -assert-count 4 t:SB_LUT4
-select -assert-none t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/logic.v b/tests/ice40/logic.v
deleted file mode 100644
index e5343ca..0000000
--- a/tests/ice40/logic.v
+++ /dev/null
@@ -1,18 +0,0 @@
-module top
-(
- input [0:7] in,
- output B1,B2,B3,B4,B5,B6,B7,B8,B9,B10
- );
-
-   assign     B1 =  in[0] & in[1];
-   assign     B2 =  in[0] | in[1];
-   assign     B3 =  in[0] ~& in[1];
-   assign     B4 =  in[0] ~| in[1];
-   assign     B5 =  in[0] ^ in[1];
-   assign     B6 =  in[0] ~^ in[1];
-   assign     B7 =  ~in[0];
-   assign     B8 =  in[0];
-   assign     B9 =  in[0:1] && in [2:3];
-   assign     B10 =  in[0:1] || in [2:3];
-
-endmodule
diff --git a/tests/ice40/mul.v b/tests/ice40/mul.v
deleted file mode 100644
index d5b48b1..0000000
--- a/tests/ice40/mul.v
+++ /dev/null
@@ -1,11 +0,0 @@
-module top
-(
- input [5:0] x,
- input [5:0] y,
-
- output [11:0] A,
- );
-
-assign A =  x * y;
-
-endmodule
diff --git a/tests/ice40/mux.v b/tests/ice40/mux.v
deleted file mode 100644
index 0814b73..0000000
--- a/tests/ice40/mux.v
+++ /dev/null
@@ -1,100 +0,0 @@
-module mux2 (S,A,B,Y);
-    input S;
-    input A,B;
-    output reg Y;
-
-    always @(*)
-		Y = (S)? B : A;
-endmodule
-
-module mux4 ( S, D, Y );
-
-input[1:0] S;
-input[3:0] D;
-output Y;
-
-reg Y;
-wire[1:0] S;
-wire[3:0] D;
-
-always @*
-begin
-    case( S )
-       0 : Y = D[0];
-       1 : Y = D[1];
-       2 : Y = D[2];
-       3 : Y = D[3];
-   endcase
-end
-
-endmodule
-
-module mux8 ( S, D, Y );
-
-input[2:0] S;
-input[7:0] D;
-output Y;
-
-reg Y;
-wire[2:0] S;
-wire[7:0] D;
-
-always @*
-begin
-   case( S )
-       0 : Y = D[0];
-       1 : Y = D[1];
-       2 : Y = D[2];
-       3 : Y = D[3];
-       4 : Y = D[4];
-       5 : Y = D[5];
-       6 : Y = D[6];
-       7 : Y = D[7];
-   endcase
-end
-
-endmodule
-
-module mux16 (D, S, Y);
- 	input  [15:0] D;
- 	input  [3:0] S;
- 	output Y;
-
-assign Y = D[S];
-
-endmodule
-
-
-module top (
-input [3:0] S,
-input [15:0] D,
-output M2,M4,M8,M16
-);
-
-mux2 u_mux2 (
-        .S (S[0]),
-        .A (D[0]),
-        .B (D[1]),
-        .Y (M2)
-    );
-
-
-mux4 u_mux4 (
-        .S (S[1:0]),
-        .D (D[3:0]),
-        .Y (M4)
-    );
-
-mux8 u_mux8 (
-        .S (S[2:0]),
-        .D (D[7:0]),
-        .Y (M8)
-    );
-
-mux16 u_mux16 (
-        .S (S[3:0]),
-        .D (D[15:0]),
-        .Y (M16)
-    );
-
-endmodule
diff --git a/tests/ice40/mux.ys b/tests/ice40/mux.ys
deleted file mode 100644
index 182b494..0000000
--- a/tests/ice40/mux.ys
+++ /dev/null
@@ -1,8 +0,0 @@
-read_verilog mux.v
-proc
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 19 t:SB_LUT4
-select -assert-none t:SB_LUT4 %% t:* %D
diff --git a/tests/ice40/run-test.sh b/tests/ice40/run-test.sh
deleted file mode 100755
index 46716f9..0000000
--- a/tests/ice40/run-test.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/usr/bin/env bash
-set -e
-{
-echo "all::"
-for x in *.ys; do
-	echo "all:: run-$x"
-	echo "run-$x:"
-	echo "	@echo 'Running $x..'"
-	echo "	@../../yosys -ql ${x%.ys}.log -w 'Yosys has only limited support for tri-state logic at the moment.' $x"
-done
-for s in *.sh; do
-	if [ "$s" != "run-test.sh" ]; then
-		echo "all:: run-$s"
-		echo "run-$s:"
-		echo "	@echo 'Running $s..'"
-		echo "	@bash $s"
-	fi
-done
-} > run-test.mk
-exec ${MAKE:-make} -f run-test.mk
diff --git a/tests/ice40/tribuf.v b/tests/ice40/tribuf.v
deleted file mode 100644
index 870a025..0000000
--- a/tests/ice40/tribuf.v
+++ /dev/null
@@ -1,23 +0,0 @@
-module tristate (en, i, o);
-    input en;
-    input i;
-    output o;
-
-	assign o = en ? i : 1'bz;
-
-endmodule
-
-
-module top (
-input en,
-input a,
-output b
-);
-
-tristate u_tri (
-        .en (en ),
-        .i (a ),
-        .o (b )
-    );
-
-endmodule
diff --git a/tests/xilinx/latches.v b/tests/xilinx/latches.v
deleted file mode 100644
index 83bad7f..0000000
--- a/tests/xilinx/latches.v
+++ /dev/null
@@ -1,58 +0,0 @@
-module latchp
-    ( input d, en, output reg q );
-	always @*
-		if ( en )
-			q <= d;
-endmodule
-
-module latchn
-    ( input d, en, output reg q );
-	always @*
-		if ( !en )
-			q <= d;
-endmodule
-
-module latchsr
-    ( input d, en, clr, pre, output reg q );
-	always @*
-		if ( clr )
-			q <= 1'b0;
-		else if ( pre )
-			q <= 1'b1;
-		else if ( en )
-			q <= d;
-endmodule
-
-
-module top (
-input clk,
-input clr,
-input pre,
-input a,
-output b,b1,b2
-);
-
-
-latchp u_latchp (
-        .en (clk ),
-        .d (a ),
-        .q (b )
-    );
-
-
-latchn u_latchn (
-        .en (clk ),
-        .d (a ),
-        .q (b1 )
-    );
-
-
-latchsr u_latchsr (
-        .en (clk ),
-        .clr (clr),
-        .pre (pre),
-        .d (a ),
-        .q (b2 )
-    );
-
-endmodule
diff --git a/tests/xilinx/latches.ys b/tests/xilinx/latches.ys
deleted file mode 100644
index bd1dffd..0000000
--- a/tests/xilinx/latches.ys
+++ /dev/null
@@ -1,13 +0,0 @@
-read_verilog latches.v
-
-proc
-flatten
-equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
-
-design -load preopt
-synth_xilinx
-cd top
-select -assert-count 1 t:LUT1
-select -assert-count 2 t:LUT3
-select -assert-count 3 t:LDCE
-select -assert-none t:LUT1 t:LUT3 t:LDCE %% t:* %D
diff --git a/tests/xilinx/macc.sh b/tests/xilinx/macc.sh
deleted file mode 100644
index 86e4c2b..0000000
--- a/tests/xilinx/macc.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-../../yosys -qp "synth_xilinx -top macc2; rename -top macc2_uut" macc.v -o macc_uut.v
-iverilog -o test_macc macc_tb.v macc_uut.v macc.v ../../techlibs/xilinx/cells_sim.v
-vvp -N ./test_macc