1 files changed, 51 insertions, 0 deletions
diff --git a/tests/techmap/dfflegalize_adlatch.ys b/tests/techmap/dfflegalize_adlatch.ys
new file mode 100644
index 000000000..dee17e40c
--- /dev/null
+++ b/tests/techmap/dfflegalize_adlatch.ys
@@ -0,0 +1,51 @@
+read_verilog -icells <<EOT
+
+module adlatch0(input E, R, D, output [2:0] Q);
+$_DLATCH_PP0_ ff0 (.E(E), .R(R), .D(D), .Q(Q[0]));
+$_DLATCH_PN0_ ff1 (.E(E), .R(R), .D(D), .Q(Q[1]));
+$_DLATCH_NP0_ ff2 (.E(E), .R(R), .D(D), .Q(Q[2]));
+endmodule
+
+module adlatch1(input E, R, D, output [2:0] Q);
+$_DLATCH_PP1_ ff0 (.E(E), .R(R), .D(D), .Q(Q[0]));
+$_DLATCH_PN1_ ff1 (.E(E), .R(R), .D(D), .Q(Q[1]));
+$_DLATCH_NP1_ ff2 (.E(E), .R(R), .D(D), .Q(Q[2]));
+endmodule
+
+module top(input C, E, R, D, output [13:0] Q);
+adlatch0 adlatch0_(.E(E), .R(R), .D(D), .Q(Q[2:0]));
+adlatch1 adlatch1_(.E(E), .R(R), .D(D), .Q(Q[5:3]));
+endmodule
+
+EOT
+
+design -save orig
+flatten
+equiv_opt -assert -multiclock -map +/simcells.v dfflegalize -cell $_DLATCH_PP0_ x
+#equiv_opt -assert -multiclock -map +/simcells.v dfflegalize -cell $_DLATCHSR_PPP_ x
+
+
+# Convert everything to ADLATCHs.
+
+design -load orig
+dfflegalize -cell $_DLATCH_PP0_ x
+
+select -assert-count 2 adlatch0/t:$_NOT_
+select -assert-count 8 adlatch1/t:$_NOT_
+select -assert-count 0 adlatch0/t:$_MUX_
+select -assert-count 0 adlatch1/t:$_MUX_
+select -assert-count 6 t:$_DLATCH_PP0_
+select -assert-none t:$_DLATCH_PP0_ t:$_MUX_ t:$_NOT_ top/* %% %n t:* %i
+
+
+# Convert everything to DLATCHSRs.
+
+design -load orig
+dfflegalize -cell $_DLATCHSR_PPP_ x
+
+select -assert-count 2 adlatch0/t:$_NOT_
+select -assert-count 2 adlatch1/t:$_NOT_
+select -assert-count 0 adlatch0/t:$_MUX_
+select -assert-count 0 adlatch1/t:$_MUX_
+select -assert-count 6 t:$_DLATCHSR_PPP_
+select -assert-none t:$_DLATCHSR_PPP_ t:$_MUX_ t:$_NOT_ top/* %% %n t:* %i