diff --git a/tests/sva/basic00.sv b/tests/sva/basic00.sv new file mode 100644 index 000000000..387f3deef --- /dev/null +++ b/tests/sva/basic00.sv @@ -0,0 +1,7 @@ +module top (input clk, reset, antecedent, output reg consequent); + always @(posedge clk) + consequent <= reset ? 0 : antecedent; + + test_assert: assert property ( @(posedge clk) disable iff (reset) antecedent |-> consequent ) + else $error("Failed with consequent = ", $sampled(consequent)); +endmodule diff --git a/tests/sva/basic01.sv b/tests/sva/basic01.sv new file mode 100644 index 000000000..596e48db0 --- /dev/null +++ b/tests/sva/basic01.sv @@ -0,0 +1,12 @@ +module top (input logic clock, ctrl); + logic read = 0, write = 0, ready = 0; + + always @(posedge clock) begin + read <= !ctrl; + write <= ctrl; + ready <= write; + end + + a_rw: assert property ( @(posedge clock) !(read && write) ); + a_wr: assert property ( @(posedge clock) write |-> ready ); +endmodule diff --git a/tests/sva/basic02.sv b/tests/sva/basic02.sv new file mode 100644 index 000000000..6100c50ae --- /dev/null +++ b/tests/sva/basic02.sv @@ -0,0 +1,16 @@ +module top (input logic clock, ctrl); + logic read = 0, write = 0, ready = 0; + + always @(posedge clock) begin + read <= !ctrl; + write <= ctrl; + ready <= write; + end +endmodule + +module top_properties (input logic clock, read, write, ready); + a_rw: assert property ( @(posedge clock) !(read && write) ); + a_wr: assert property ( @(posedge clock) write |-> ready ); +endmodule + +bind top top_properties inst (.*); diff --git a/tests/sva/basic03.sv b/tests/sva/basic03.sv new file mode 100644 index 000000000..a15f3f3a4 --- /dev/null +++ b/tests/sva/basic03.sv @@ -0,0 +1,10 @@ +module top (input logic clk, input logic selA, selB, QA, QB, output logic Q); + always @(posedge clk) begin + if (selA) Q <= QA; + if (selB) Q <= QB; + end + + check_selA: assert property ( @(posedge clk) selA|=> Q == $past(QA) ); + check_selB: assert property ( @(posedge clk) selB|=> Q == $past(QB) ); + assume_not_11: assume property ( @(posedge clk) !(selA& selB) ); +endmodule