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precalculate r-values of nb assignments and task arguments.

This commit is contained in:
steve 2002-12-05 04:15:14 +00:00
parent 9f80ed32b6
commit b89e138404
1 changed files with 21 additions and 1 deletions
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22
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 1.265 2002/11/26 03:35:13 steve Exp $"
#ident "$Id: elaborate.cc,v 1.266 2002/12/05 04:15:14 steve Exp $"
#endif
# include "config.h"
@ -1076,6 +1076,12 @@ NetProc* PAssignNB::elaborate(Design*des, NetScope*scope) const
assert(rv);
/* Try to evaluate the expression, at least as far as possible. */
if (NetExpr*tmp = rv->eval_tree()) {
delete rv;
rv = tmp;
}
{ unsigned wid = count_lval_width(lv);
rv->set_width(wid);
rv = pad_to_width(rv, wid);
@ -1351,6 +1357,17 @@ NetProc* PCallTask::elaborate_sys(Design*des, NetScope*scope) const
for (unsigned idx = 0 ; idx < parm_count ; idx += 1) {
PExpr*ex = parm(idx);
eparms[idx] = ex? ex->elaborate_expr(des, scope, true) : 0;
/* Attempt to pre-evaluate the parameters. It may be
possible to at least partially reduce the
expression. */
if (eparms[idx] && !dynamic_cast<NetEConst*>(eparms[idx])) {
NetExpr*tmp = eparms[idx]->eval_tree();
if (tmp != 0) {
delete eparms[idx];
eparms[idx] = tmp;
}
}
}
NetSTask*cur = new NetSTask(path_.peek_name(0), eparms);
@ -2472,6 +2489,9 @@ Design* elaborate(list<const char*>roots)
/*
* $Log: elaborate.cc,v $
* Revision 1.266 2002/12/05 04:15:14 steve
* precalculate r-values of nb assignments and task arguments.
*
* Revision 1.265 2002/11/26 03:35:13 steve
* Do not set width if width is already OK.
*