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Add Verific SVA support for ranges in repetition operator

This commit is contained in:
Clifford Wolf 2018-02-22 12:37:30 +01:00
parent 6d12c83d36
commit 2521ed305e
1 changed files with 26 additions and 5 deletions
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31
frontends/verific/verificsva.cc
View File

@ -421,15 +421,36 @@ struct VerificSvaImporter
int sva_high = atoi(sva_high_s); int sva_high = atoi(sva_high_s);
bool sva_inf = !strcmp(sva_high_s, "$"); bool sva_inf = !strcmp(sva_high_s, "$");
if (sva_inf || sva_low != sva_high)
log_error("Ranges on SVA consecutive repeat operator are not supported at the moment.\n");
parse_sequence(seq, inst->GetInput()); parse_sequence(seq, inst->GetInput());
for (int i = 1; i < sva_low; i++) { for (int i = 1; i < sva_low; i++) {
sequence_ff(seq); sequence_ff(seq);
parse_sequence(seq, inst->GetInput()); parse_sequence(seq, inst->GetInput());
} }
if (sva_inf)
{
SigBit latched_a = module->addWire(NEW_ID);
SigBit latched_en = module->addWire(NEW_ID);
combine_seq(seq, latched_a, latched_en);
sequence_t seq_latched = seq;
sequence_ff(seq_latched);
parse_sequence(seq_latched, inst->GetInput());
module->connect(latched_a, seq_latched.sig_a);
module->connect(latched_en, seq_latched.sig_en);
}
else
{
for (int i = sva_low; i < sva_high; i++)
{
sequence_t last_seq = seq;
sequence_ff(seq);
parse_sequence(seq, inst->GetInput());
combine_seq(seq, last_seq);
}
}
return; return;
} }
@ -463,8 +484,8 @@ struct VerificSvaImporter
// Handle unsupported primitives // Handle unsupported primitives
if (!importer->mode_keep) if (!importer->mode_keep)
log_error("Unsupported Verific SVA primitive %s of type %s.\n", inst->Name(), inst->View()->Owner()->Name()); log_error("Verific SVA primitive %s (%s) is currently unsupported in this context.\n", inst->View()->Owner()->Name(), inst->Name());
log_warning("Unsupported Verific SVA primitive %s of type %s.\n", inst->Name(), inst->View()->Owner()->Name()); log_warning("Verific SVA primitive %s (%s) is currently unsupported in this context.\n", inst->View()->Owner()->Name(), inst->Name());
} }
void import() void import()