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Turn NetTmp objects into normal local NetNet objects, 

and add the nodangle functor to clean up the local
 symbols generated by elaboration and other steps.
This commit is contained in:
steve 1999-11-18 03:52:19 +00:00
parent 23ce3a9042
commit 9d6392fda9
9 changed files with 149 additions and 21 deletions
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4
Makefile.in
View File

@ -18,7 +18,7 @@
# 59 Temple Place - Suite 330
# Boston, MA 02111-1307, USA
#
#ident "$Id: Makefile.in,v 1.27 1999/11/02 04:55:34 steve Exp $"
#ident "$Id: Makefile.in,v 1.28 1999/11/18 03:52:19 steve Exp $"
#
#
SHELL = /bin/sh
@ -66,7 +66,7 @@ distclean: clean
rm -f Makefile
TT = t-null.o t-verilog.o t-vvm.o t-xnf.o
FF = nobufz.o propinit.o sigfold.o synth.o xnfio.o xnfsyn.o
FF = nobufz.o nodangle.o propinit.o sigfold.o synth.o xnfio.o xnfsyn.o
O = main.o cprop.o design_dump.o elaborate.o elab_expr.o elab_net.o \
emit.o eval.o eval_tree.o expr_synth.o functor.o \

29
elaborate.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: elaborate.cc,v 1.123 1999/11/10 02:52:24 steve Exp $"
#ident "$Id: elaborate.cc,v 1.124 1999/11/18 03:52:19 steve Exp $"
#endif
/*
@ -771,7 +771,9 @@ NetNet* PEIdent::elaborate_net(Design*des, const string&path,
unsigned lidx = sig->sb_to_idx(lval->as_long());
if (midx >= lidx) {
NetTmp*tmp = new NetTmp(midx-lidx+1);
NetTmp*tmp = new NetTmp(des->local_symbol(path),
midx-lidx+1);
des->add_signal(tmp);
if (tmp->pin_count() > sig->pin_count()) {
cerr << get_line() << ": bit select out of "
<< "range for " << sig->name() << endl;
@ -784,7 +786,9 @@ NetNet* PEIdent::elaborate_net(Design*des, const string&path,
sig = tmp;
} else {
NetTmp*tmp = new NetTmp(lidx-midx+1);
NetTmp*tmp = new NetTmp(des->local_symbol(path),
lidx-midx+1);
des->add_signal(tmp);
assert(tmp->pin_count() <= sig->pin_count());
for (unsigned idx = lidx ; idx >= midx ; idx -= 1)
connect(tmp->pin(idx-midx), sig->pin(idx));
@ -809,7 +813,8 @@ NetNet* PEIdent::elaborate_net(Design*des, const string&path,
des->errors += 1;
idx = 0;
}
NetTmp*tmp = new NetTmp(1);
NetTmp*tmp = new NetTmp(des->local_symbol(path), 1);
des->add_signal(tmp);
connect(tmp->pin(0), sig->pin(idx));
sig = tmp;
}
@ -862,7 +867,9 @@ NetNet* PEIdent::elaborate_lnet(Design*des, const string&path) const
unsigned lidx = sig->sb_to_idx(lval->as_long());
if (midx >= lidx) {
NetTmp*tmp = new NetTmp(midx-lidx+1);
NetTmp*tmp = new NetTmp(des->local_symbol(path),
midx-lidx+1);
des->add_signal(tmp);
if (tmp->pin_count() > sig->pin_count()) {
cerr << get_line() << ": bit select out of "
<< "range for " << sig->name() << endl;
@ -875,7 +882,9 @@ NetNet* PEIdent::elaborate_lnet(Design*des, const string&path) const
sig = tmp;
} else {
NetTmp*tmp = new NetTmp(lidx-midx+1);
NetTmp*tmp = new NetTmp(des->local_symbol(path),
lidx-midx+1);
des->add_signal(tmp);
assert(tmp->pin_count() <= sig->pin_count());
for (unsigned idx = lidx ; idx >= midx ; idx -= 1)
connect(tmp->pin(idx-midx), sig->pin(idx));
@ -900,7 +909,8 @@ NetNet* PEIdent::elaborate_lnet(Design*des, const string&path) const
des->errors += 1;
idx = 0;
}
NetTmp*tmp = new NetTmp(1);
NetTmp*tmp = new NetTmp(des->local_symbol(path), 1);
des->add_signal(tmp);
connect(tmp->pin(0), sig->pin(idx));
sig = tmp;
}
@ -2335,6 +2345,11 @@ Design* elaborate(const map<string,Module*>&modules,
/*
* $Log: elaborate.cc,v $
* Revision 1.124 1999/11/18 03:52:19 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
* Revision 1.123 1999/11/10 02:52:24 steve
* Create the vpiMemory handle type.
*

10
functor.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: functor.cc,v 1.3 1999/11/01 02:07:40 steve Exp $"
#ident "$Id: functor.cc,v 1.4 1999/11/18 03:52:19 steve Exp $"
#endif
# include "functor.h"
@ -45,8 +45,9 @@ void Design::functor(functor_t*fun)
if (signals_) {
NetNet*cur = signals_->sig_next_;
do {
NetNet*tmp = cur->sig_next_;
fun->signal(this, cur);
cur = cur->sig_next_;
cur = tmp;
} while (cur != signals_->sig_next_);
}
@ -81,6 +82,11 @@ void NetFF::functor_node(Design*des, functor_t*fun)
/*
* $Log: functor.cc,v $
* Revision 1.4 1999/11/18 03:52:19 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
* Revision 1.3 1999/11/01 02:07:40 steve
* Add the synth functor to do generic synthesis
* and add the LPM_FF device to handle rows of

11
main.cc
View File

@ -19,7 +19,7 @@ const char COPYRIGHT[] =
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: main.cc,v 1.24 1999/11/01 02:07:40 steve Exp $"
#ident "$Id: main.cc,v 1.25 1999/11/18 03:52:19 steve Exp $"
#endif
const char NOTICE[] =
@ -81,6 +81,7 @@ extern void propinit(Design*des);
extern void sigfold(Design*des);
extern void synth(Design*des);
extern void nobufz(Design*des);
extern void nodangle(Design*des);
extern void xnfio(Design*des);
extern void xnfsyn(Design*des);
@ -91,7 +92,8 @@ static struct net_func_map {
} func_table[] = {
{ "cprop", &cprop },
{ "nobufz", &nobufz },
{ "propinit", &propinit },
{ "nodangle",&nodangle },
{ "propinit",&propinit },
{ "sigfold", &sigfold },
{ "synth", &synth },
{ "xnfio", &xnfio },
@ -279,6 +281,11 @@ int main(int argc, char*argv[])
/*
* $Log: main.cc,v $
* Revision 1.25 1999/11/18 03:52:19 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
* Revision 1.24 1999/11/01 02:07:40 steve
* Add the synth functor to do generic synthesis
* and add the LPM_FF device to handle rows of

13
netlist.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: netlist.cc,v 1.86 1999/11/14 23:43:45 steve Exp $"
#ident "$Id: netlist.cc,v 1.87 1999/11/18 03:52:19 steve Exp $"
#endif
# include <cassert>
@ -346,6 +346,12 @@ unsigned NetNet::sb_to_idx(long sb) const
return lsb_ - sb;
}
NetTmp::NetTmp(const string&name, unsigned npins)
: NetNet(name, IMPLICIT, npins)
{
local_flag(true);
}
NetProc::NetProc()
: next_(0)
{
@ -2342,6 +2348,11 @@ NetNet* Design::find_signal(bool (*func)(const NetNet*))
/*
* $Log: netlist.cc,v $
* Revision 1.87 1999/11/18 03:52:19 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
* Revision 1.86 1999/11/14 23:43:45 steve
* Support combinatorial comparators.
*

14
netlist.h
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: netlist.h,v 1.88 1999/11/14 23:43:45 steve Exp $"
#ident "$Id: netlist.h,v 1.89 1999/11/18 03:52:19 steve Exp $"
#endif
/*
@ -599,14 +599,13 @@ class NetEConst : public NetExpr {
/*
* The NetTmp object is a network that is only used momentarily by
* elaboration to carry links around. A completed netlist cannot have
* any of these within. This is a kind of wire, so it is NetNet type.
* elaboration to carry links around. A completed netlist should not
* have any of these within. This is a kind of wire, so it is NetNet type.
*/
class NetTmp : public NetNet {
public:
explicit NetTmp(unsigned npins =1)
: NetNet("@", IMPLICIT, npins) { }
explicit NetTmp(const string&name, unsigned npins =1);
};
@ -1938,6 +1937,11 @@ extern ostream& operator << (ostream&, NetNet::Type);
/*
* $Log: netlist.h,v $
* Revision 1.89 1999/11/18 03:52:19 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
* Revision 1.88 1999/11/14 23:43:45 steve
* Support combinatorial comparators.
*

80
nodangle.cc Normal file
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@ -0,0 +1,80 @@
/*
* Copyright (c) 1999Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: nodangle.cc,v 1.1 1999/11/18 03:52:20 steve Exp $"
#endif
/*
* This functor scans the design looking for dangling objects and
* excess local signals. These deletions are not necessarily required
* for proper functioning of anything, but they can clean up the
* appearance of design files that are generated.
*/
# include "functor.h"
# include "netlist.h"
class nodangle_f : public functor_t {
public:
void signal(Design*des, NetNet*sig);
};
void nodangle_f::signal(Design*des, NetNet*sig)
{
if (! sig->local_flag())
return;
/* Check to see if there is some significant signal connected
to every pin of this signal. */
unsigned significant_flags = 0;
for (unsigned idx = 0 ; idx < sig->pin_count() ; idx += 1) {
NetObj::Link&lnk = sig->pin(idx);
for (NetObj::Link*cur = lnk.next_link()
; cur != &lnk ; cur = cur->next_link()) {
NetNet*cursig = dynamic_cast<NetNet*>(cur->get_obj());
if (cursig == 0)
continue;
if (cursig->local_flag())
continue;
significant_flags += 1;
break;
}
}
/* If every pin is connected to another significant signal,
then I can delete this one. */
if (significant_flags == sig->pin_count())
delete sig;
}
void nodangle(Design*des)
{
nodangle_f fun;
des->functor(&fun);
}
/*
* $Log: nodangle.cc,v $
* Revision 1.1 1999/11/18 03:52:20 steve
* Turn NetTmp objects into normal local NetNet objects,
* and add the nodangle functor to clean up the local
* symbols generated by elaboration and other steps.
*
*/

2
verilog.sh
View File

@ -78,7 +78,7 @@ fi
case "$target" in
vvm) targetSuffix="" ;;
xnf) targetSuffix=".xnf"
functors="-Fsynth -Fsigfold -Fxnfio" ;;
functors="-Fsynth -Fnodangle -Fxnfio" ;;
*) targetSuffix=".$target" ;;
esac

7
xnf.txt
View File

@ -102,7 +102,7 @@ line. The code generator needs to know the type of part to generate
code for, so the ``-fpart=<type>'' flag is also needed. For example,
to generate code for the 4010E the command line might start out as:
ivl -txnf -fpart=4010e -Fsynth -Fsigfold -Fxnfio [...]
ivl -txnf -fpart=4010e -Fsynth -Fnodangle -Fxnfio [...]
Icarus Verilog includes the functions ``synth'' and ``xnfio'' to
perform transformations and optimizations on the design before code is
@ -176,6 +176,11 @@ IBUF, NOT gates cannot be absorbed as in the OPAD case.
$Log: xnf.txt,v $
Revision 1.9 1999/11/18 03:52:20 steve
Turn NetTmp objects into normal local NetNet objects,
and add the nodangle functor to clean up the local
symbols generated by elaboration and other steps.
Revision 1.8 1999/11/06 04:51:42 steve
Support writing some XNF things into an NCF file.