diff --git a/Makefile_test.common b/Makefile_test.common
index db3cc3c..ca6ec18 100644
--- a/Makefile_test.common
+++ b/Makefile_test.common
@@ -95,6 +95,47 @@
 
 endef
 
+define test_post_synth_sim_tpl =
+$(1): $(1)/ok
+	@printf "Test %-18s \e[32mPASSED\e[0m @ %s\n" $(1) $(CURDIR);
+
+$(1)/ok: $(1)/synth
+	@make -C $(1)/sim sim; \
+	if [ $$$$? -ne 0 ]; then \
+		printf "Test %-18s \e[31;1mFAILED\e[0m @ %s\n" $(1) $(CURDIR); \
+		false; \
+	else \
+		touch $$@; \
+		true; \
+	fi
+
+$(1)/synth: $(1)/$$(notdir $(1).v)
+	@set +e; \
+	cd $(1); \
+	echo "source $(TEST_UTILS)" > run-$$(notdir $(1)).tcl ;\
+	echo "source $$(notdir $(1)).tcl" >> run-$$(notdir $(1)).tcl ;\
+	DESIGN_TOP=$$(notdir $(1)) TEST_OUTPUT_PREFIX=./ \
+	yosys -c "run-$$(notdir $(1)).tcl" -q -q -l $$(notdir $(1)).log; \
+	RETVAL=$$$$?; \
+	rm -f run-$$(notdir $(1)).tcl; \
+	if [ ! -z "$$($(1)_negative)" ] && [ $$($(1)_negative) -eq 1 ]; then \
+		if [ $$$$RETVAL -ne 0 ]; then \
+			printf "Negative test %-20s \e[32mPASSED\e[0m @ %s\n" $(1) $(CURDIR); \
+			true; \
+		else \
+			printf "Negative test %-20s \e[31;1mFAILED\e[0m @ %s\n" $(1) $(CURDIR); \
+			false; \
+		fi \
+	else \
+		if [ $$$$RETVAL -ne 0 ]; then \
+			echo "Unexpected runtime error"; \
+		    printf "Test %-20s \e[31;1mFAILED\e[0m @ %s\n" $(1) $(CURDIR); \
+			false; \
+		fi \
+	fi
+
+endef
+
 define unit_test_tpl =
 $(1): $(1)/$(1).test
 	@$$<
@@ -109,7 +150,7 @@
 
 diff_test = diff $(1)/$(1).golden.$(2) $(1)/$(1).$(2)
 
-all: $(TESTS) $(SIM_TESTS) $(UNIT_TESTS)
+all: $(TESTS) $(SIM_TESTS) $(POST_SYNTH_SIM_TESTS) $(UNIT_TESTS)
 
 $(GTEST_DIR)/build/lib/libgtest.a $(GTEST_DIR)/build/lib/libgtest_main.a:
 	@mkdir -p $(GTEST_DIR)/build
@@ -121,10 +162,12 @@
 
 $(foreach test,$(TESTS),$(eval $(call test_tpl,$(test))))
 $(foreach test,$(SIM_TESTS),$(eval $(call test_sim_tpl,$(test))))
+$(foreach test,$(POST_SYNTH_SIM_TESTS),$(eval $(call test_post_synth_sim_tpl,$(test))))
 $(foreach test,$(UNIT_TESTS),$(eval $(call unit_test_tpl,$(test))))
 
 clean:
 	@rm -rf $(foreach test,$(TESTS),$(test)/$(test).sdc $(test)/$(test)_[0-9].sdc $(test)/$(test).txt $(test)/$(test).eblif $(test)/$(test).json)
 	@rm -rf $(foreach test,$(SIM_TESTS),$(test)/*.vvp $(test)/*.vcd)
+	@rm -rf $(foreach test,$(POST_SYNTH_SIM_TESTS),$(test)/sim/*.vvp $(test)/sim/*.vcd $(test)/sim/*post_synth.v)
 	@rm -rf $(foreach test,$(UNIT_TESTS),$(test)/$(test).test.o $(test)/$(test).test.d $(test)/$(test).test)
 	@find . -name "ok" -or -name "*.log" | xargs rm -rf