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Mark all words as driven when assigning to an entire uwire array. 

This is needed to catch errors if individual words are also separately
driven.
This commit is contained in:
Martin Whitaker 2024-02-03 13:50:06 +00:00
parent 42c5174c8d
commit 65f552aba3
1 changed files with 19 additions and 12 deletions
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elab_net.cc
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1999-2023 Stephen Williams (steve@icarus.com)
* Copyright (c) 1999-2024 Stephen Williams (steve@icarus.com)
* Copyright CERN 2012 / Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
@ -870,18 +870,25 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
unsigned subnet_wid = midx-lidx+1;
/* Check if the l-value bits are double-driven. */
if (sig->type() == NetNet::UNRESOLVED_WIRE && sig->test_and_set_part_driver(midx,lidx, widx_flag? widx : 0)) {
cerr << get_fileline() << ": error: Unresolved net/uwire "
<< sig->name() << " cannot have multiple drivers." << endl;
if (debug_elaborate) {
cerr << get_fileline() << ": : Overlap in "
<< "[" << midx << ":" << lidx << "] (canonical)"
<< ", widx=" << (widx_flag? widx : 0)
<< ", vector width=" << sig->vector_width()
<< endl;
if (sig->type() == NetNet::UNRESOLVED_WIRE) {
ivl_assert(*this, widx_flag || (widx == 0));
long wcount = widx_flag ? 1 : sig->pin_count();
for (long idx = 0; idx < wcount; idx += 1) {
if (sig->test_and_set_part_driver(midx, lidx, widx + idx)) {
cerr << get_fileline() << ": error: Unresolved net/uwire "
<< sig->name() << " cannot have multiple drivers." << endl;
if (debug_elaborate) {
cerr << get_fileline() << ": : Overlap in "
<< "[" << midx << ":" << lidx << "] (canonical)"
<< ", widx=" << (widx_flag? widx : 0)
<< ", vector width=" << sig->vector_width()
<< endl;
}
des->errors += 1;
return 0;
}
}
des->errors += 1;
return 0;
}
if (sig->pin_count() > 1 && widx_flag) {