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Fix left shift of small unsized constants.

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steve
2006-09-20 20:27:02 +00:00
parent 4ec8b38a5c
commit 20cfe99457
1 changed files with 8 additions and 2 deletions
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eval.cc
+8 -2
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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: eval.cc,v 1.36.2.2 2005/12/18 21:06:01 steve Exp $"
#ident "$Id: eval.cc,v 1.36.2.3 2006/09/20 20:27:02 steve Exp $"
#endif
# include "config.h"
@@ -112,7 +112,10 @@ verinum* PEBinary::eval_const(const Design*des, const NetScope*scope) const
case 'l': { // left shift (<<)
assert(r->is_defined());
unsigned long rv = r->as_ulong();
res = new verinum(verinum::V0, l->len());
unsigned use_wid = l->len();
if (! l->has_len())
use_wid += rv;
res = new verinum(verinum::V0, use_wid);
if (rv < res->len()) {
unsigned cnt = res->len() - rv;
for (unsigned idx = 0 ; idx < cnt ; idx += 1)
@@ -261,6 +264,9 @@ verinum* PEUnary::eval_const(const Design*des, const NetScope*scope) const
/*
* $Log: eval.cc,v $
* Revision 1.36.2.3 2006/09/20 20:27:02 steve
* Fix left shift of small unsized constants.
*
* Revision 1.36.2.2 2005/12/18 21:06:01 steve
* Properly fail when concat is not actually constant.
*