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Improve Verific SVA importer

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This commit is contained in:
Clifford Wolf 2017-07-27 14:05:09 +02:00
parent 877ff1f75e
commit c1cfca8f54
2 changed files with 42 additions and 7 deletions
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34
frontends/verific/verific.cc
View file

@ -1275,6 +1275,40 @@ struct VerificSvaImporter
return;
}
if (inst->Type() == PRIM_SVA_SEQ_CONCAT)
{
int sva_low = atoi(inst->GetAttValue("sva:low"));
int sva_high = atoi(inst->GetAttValue("sva:low"));
if (sva_low != sva_high)
log_error("Ranges on SVA sequence concatenation operator are not supported at the moment.\n");
parse_sequence(seq, inst->GetInput1());
for (int i = 0; i < sva_low; i++)
sequence_ff(seq);
parse_sequence(seq, inst->GetInput2());
return;
}
if (inst->Type() == PRIM_SVA_CONSECUTIVE_REPEAT)
{
int sva_low = atoi(inst->GetAttValue("sva:low"));
int sva_high = atoi(inst->GetAttValue("sva:low"));
if (sva_low != sva_high)
log_error("Ranges on SVA consecutive repeat operator are not supported at the moment.\n");
parse_sequence(seq, inst->GetInput());
for (int i = 1; i < sva_low; i++) {
sequence_ff(seq);
parse_sequence(seq, inst->GetInput());
}
return;
}
if (!importer->mode_keep)
log_error("Unsupported Verific SVA primitive %s of type %s.\n", inst->Name(), inst->View()->Owner()->Name());
log_warning("Unsupported Verific SVA primitive %s of type %s.\n", inst->Name(), inst->View()->Owner()->Name());

11
tests/sva/counter.sv
View file

@ -12,18 +12,19 @@ module top (input clk, reset, up, down, output reg [7:0] cnt);
default disable iff (reset);
assert property (up |=> cnt == $past(cnt) + 8'd 1);
// assert property (up [*2] |=> cnt == $past(cnt, 2) + 8'd2);
// assert property (up ##1 up |=> cnt == $past(cnt, 2) + 8'd2);
assert property (up [*2] |=> cnt == $past(cnt, 2) + 8'd 2);
assert property (up ##1 up |=> cnt == $past(cnt, 2) + 8'd 2);
`ifndef FAIL
assume property (down |-> !up);
`endif
assert property (up ##1 down |=> cnt == $past(cnt, 2));
assert property (down |=> cnt == $past(cnt) - 8'd 1);
property down_n(n);
down [*n] |=> cnt == $past(cnt, n) + n;
down [*n] |=> cnt == $past(cnt, n) - n;
endproperty
// assert property (down_n(3));
// assert property (down_n(5));
assert property (down_n(8'd 3));
assert property (down_n(8'd 5));
endmodule