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Account for local units in calculated delays.

This commit is contained in:
steve 2002-12-21 19:42:17 +00:00
parent d7f3d00f5c
commit dedae73761
1 changed files with 28 additions and 1 deletions
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29
elaborate.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: elaborate.cc,v 1.266 2002/12/05 04:15:14 steve Exp $"
#ident "$Id: elaborate.cc,v 1.267 2002/12/21 19:42:17 steve Exp $"
#endif
# include "config.h"
@ -1606,6 +1606,30 @@ NetProc* PDelayStatement::elaborate(Design*des, NetScope*scope) const
/* Ah, the delay is not constant. OK, elaborate the
expression and let the run-time handle it. */
NetExpr*dex = delay_->elaborate_expr(des, scope);
/* If the local scope units are different from the
simulation precision, then extend the expression to
convert the delay to simulation time. */
if (scope->time_unit() != des->get_precision()) {
long scale = 1;
int unit = scope->time_unit();
int prec = des->get_precision();
while (unit > prec) {
scale *= 10;
unit -= 1;
}
verinum scale_v (scale);
NetEConst*scale_e = new NetEConst(scale_v);
NetEBMult*scale_m = new NetEBMult('*', scale_e, dex);
if (NetExpr*tmp = scale_m->eval_tree()) {
dex = tmp;
delete scale_m;
} else {
dex = scale_m;
}
}
if (statement_)
return new NetPDelay(dex, statement_->elaborate(des, scope));
else
@ -2489,6 +2513,9 @@ Design* elaborate(list<const char*>roots)
/*
* $Log: elaborate.cc,v $
* Revision 1.267 2002/12/21 19:42:17 steve
* Account for local units in calculated delays.
*
* Revision 1.266 2002/12/05 04:15:14 steve
* precalculate r-values of nb assignments and task arguments.
*