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Support degenerat wait statements.

This commit is contained in:
steve 2004-09-05 21:07:26 +00:00
parent 1ab8879100
commit c10e572091
1 changed files with 14 additions and 1 deletions
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15
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 1.306 2004/09/05 17:44:41 steve Exp $"
#ident "$Id: elaborate.cc,v 1.307 2004/09/05 21:07:26 steve Exp $"
#endif
# include "config.h"
@ -2088,6 +2088,12 @@ NetProc* PEventStatement::elaborate_wait(Design*des, NetScope*scope,
expr = cmp;
}
/* precalculate as much as possible of the wait expression. */
if (NetExpr*tmp = expr->eval_tree()) {
delete expr;
expr = tmp;
}
/* Detect the unusual case that the wait expression is
constant. Constant true is OK (it becomes transparent) but
constant false is almost certainly not what is intended. */
@ -2192,6 +2198,10 @@ NetProc* PEventStatement::elaborate(Design*des, NetScope*scope) const
enet = statement_->elaborate(des, scope);
if (enet == 0)
return 0;
} else {
enet = new NetBlock(NetBlock::SEQU, 0);
enet->set_line(*this);
}
if ((expr_.count() == 1) && (expr_[0]->type() == PEEvent::POSITIVE))
@ -2759,6 +2769,9 @@ Design* elaborate(list<perm_string>roots)
/*
* $Log: elaborate.cc,v $
* Revision 1.307 2004/09/05 21:07:26 steve
* Support degenerat wait statements.
*
* Revision 1.306 2004/09/05 17:44:41 steve
* Add support for module instance arrays.
*