diff options
Diffstat (limited to 'tests/opt/opt_expr_xnor.ys')
| -rw-r--r-- | tests/opt/opt_expr_xnor.ys | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/tests/opt/opt_expr_xnor.ys b/tests/opt/opt_expr_xnor.ys new file mode 100644 index 000000000..f8ef0d352 --- /dev/null +++ b/tests/opt/opt_expr_xnor.ys @@ -0,0 +1,131 @@ +# Single-bit $xnor +read_verilog -noopt <<EOT +module gold(input i, output o); +assign o = 1'bx ~^ i; +endmodule +EOT +select -assert-count 1 t:$xnor +copy gold coarse +copy gold fine +copy gold coarse_keepdc +copy gold fine_keepdc + +cd coarse +opt_expr +select -assert-none t:$xnor + +cd fine +simplemap +opt_expr +select -assert-none c:t$_XNOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold coarse miter +sat -verify -prove-asserts -show-ports -enable_undef miter +miter -equiv -flatten -make_assert -make_outputs coarse fine miter2 +sat -verify -prove-asserts -show-ports -enable_undef miter2 + +cd coarse_keepdc +opt_expr -keepdc +select -assert-count 1 c:* + +cd fine_keepdc +simplemap +opt_expr -keepdc +select -assert-count 1 t:$_XOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs gold coarse_keepdc miter3 +sat -verify -prove-asserts -show-ports -enable_undef miter3 +miter -equiv -flatten -make_assert -make_outputs coarse_keepdc fine_keepdc miter4 +sat -verify -prove-asserts -show-ports -enable_undef miter4 + + +# Multi-bit $xnor +design -reset +read_verilog -noopt <<EOT +module gold(input i, output [6:0] o); +assign o = {1'bx, 1'b0, 1'b0, 1'b1, 1'bx, 1'b1, i} ~^ {7{i}}; +endmodule +EOT +select -assert-count 1 t:$xnor +copy gold coarse +copy gold fine +copy gold coarse_keepdc +copy gold fine_keepdc + +cd coarse +opt_expr -fine +select -assert-none t:$xnor + +cd fine +simplemap +opt_expr +select -assert-none t:$_XNOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold coarse miter +sat -verify -prove-asserts -show-ports -enable_undef miter +miter -equiv -flatten -make_assert -make_outputs coarse fine miter2 +sat -verify -prove-asserts -show-ports -enable_undef miter2 + +cd coarse_keepdc +opt_expr -keepdc -fine +select -assert-count 1 t:$xnor + +cd fine_keepdc +simplemap +opt_expr -keepdc +select -assert-count 0 c:$_XOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs gold coarse_keepdc miter3 +sat -verify -prove-asserts -show-ports -enable_undef miter3 +miter -equiv -flatten -make_assert -make_outputs coarse_keepdc fine_keepdc miter4 +sat -verify -prove-asserts -show-ports -enable_undef miter4 + + +# Single-bit $xnor extension +design -reset +read_verilog -noopt <<EOT +module gold(input i, output [1:0] o, p, q); +assign o = i ~^ i; +assign p = 1'b0 ~^ i; +assign q = 1'b1 ~^ i; +endmodule +EOT +select -assert-count 3 t:$xnor +copy gold coarse +copy gold fine +copy gold coarse_keepdc +copy gold fine_keepdc + +cd coarse +opt_expr -fine +select -assert-none t:$xnor + +cd fine +simplemap +opt_expr +select -assert-none t:$_XNOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs -ignore_gold_x gold coarse miter +sat -verify -prove-asserts -show-ports -enable_undef miter +miter -equiv -flatten -make_assert -make_outputs coarse fine miter2 +sat -verify -prove-asserts -show-ports -enable_undef miter2 + +cd coarse_keepdc +opt_expr -keepdc -fine +select -assert-count 1 t:$xnor + +cd fine_keepdc +simplemap +opt_expr -keepdc +select -assert-count 0 c:$_XNOR_ + +cd +miter -equiv -flatten -make_assert -make_outputs gold coarse_keepdc miter3 +sat -verify -prove-asserts -show-ports -enable_undef miter3 +miter -equiv -flatten -make_assert -make_outputs coarse_keepdc fine_keepdc miter4 +sat -verify -prove-asserts -show-ports -enable_undef miter4 |