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Unary reduction operators are all 1-bit results.

This commit is contained in:
steve 2001-11-19 04:26:46 +00:00
parent e00aedd99b
commit f28f5e01e5
3 changed files with 29 additions and 3 deletions
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10
netlist.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) && !defined(macintosh) #if !defined(WINNT) && !defined(macintosh)
#ident "$Id: netlist.cc,v 1.176 2001/11/19 01:54:14 steve Exp $" #ident "$Id: netlist.cc,v 1.177 2001/11/19 04:26:46 steve Exp $"
#endif #endif
# include "config.h" # include "config.h"
@ -2326,6 +2326,11 @@ const NetExpr* NetETernary::false_expr() const
NetEUnary::NetEUnary(char op, NetExpr*ex) NetEUnary::NetEUnary(char op, NetExpr*ex)
: NetExpr(ex->expr_width()), op_(op), expr_(ex) : NetExpr(ex->expr_width()), op_(op), expr_(ex)
{ {
switch (op_) {
case '!':
expr_width(1);
break;
}
} }
NetEUnary::~NetEUnary() NetEUnary::~NetEUnary()
@ -2402,6 +2407,9 @@ const NetProc*NetTaskDef::proc() const
/* /*
* $Log: netlist.cc,v $ * $Log: netlist.cc,v $
* Revision 1.177 2001/11/19 04:26:46 steve
* Unary reduction operators are all 1-bit results.
*
* Revision 1.176 2001/11/19 01:54:14 steve * Revision 1.176 2001/11/19 01:54:14 steve
* Port close cropping behavior from mcrgb * Port close cropping behavior from mcrgb
* Move window array reset to libmc. * Move window array reset to libmc.

6
netlist.h
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) && !defined(macintosh) #if !defined(WINNT) && !defined(macintosh)
#ident "$Id: netlist.h,v 1.224 2001/11/14 03:28:49 steve Exp $" #ident "$Id: netlist.h,v 1.225 2001/11/19 04:26:46 steve Exp $"
#endif #endif
/* /*
@ -2445,6 +2445,7 @@ class NetEUReduce : public NetEUnary {
NetEUReduce(char op, NetExpr*ex); NetEUReduce(char op, NetExpr*ex);
~NetEUReduce(); ~NetEUReduce();
virtual bool set_width(unsigned w);
virtual NetNet* synthesize(Design*); virtual NetNet* synthesize(Design*);
virtual NetEConst* eval_tree(); virtual NetEConst* eval_tree();
@ -2861,6 +2862,9 @@ extern ostream& operator << (ostream&, NetNet::Type);
/* /*
* $Log: netlist.h,v $ * $Log: netlist.h,v $
* Revision 1.225 2001/11/19 04:26:46 steve
* Unary reduction operators are all 1-bit results.
*
* Revision 1.224 2001/11/14 03:28:49 steve * Revision 1.224 2001/11/14 03:28:49 steve
* DLL target support for force and release. * DLL target support for force and release.
* *

16
set_width.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) && !defined(macintosh) #if !defined(WINNT) && !defined(macintosh)
#ident "$Id: set_width.cc,v 1.19 2001/07/27 04:51:44 steve Exp $" #ident "$Id: set_width.cc,v 1.20 2001/11/19 04:26:46 steve Exp $"
#endif #endif
# include "config.h" # include "config.h"
@ -330,6 +330,8 @@ bool NetEUnary::set_width(unsigned w)
flag = expr_->set_width(w); flag = expr_->set_width(w);
expr_width(w); expr_width(w);
break; break;
case '!':
return w == 1;
default: default:
flag = expr_width() == w; flag = expr_width() == w;
break; break;
@ -338,9 +340,21 @@ bool NetEUnary::set_width(unsigned w)
return flag; return flag;
} }
/*
* Unary reduction operators allow its operand to have any width. The
* result is defined to be 1.
*/
bool NetEUReduce::set_width(unsigned w)
{
return w == 1;
}
/* /*
* $Log: set_width.cc,v $ * $Log: set_width.cc,v $
* Revision 1.20 2001/11/19 04:26:46 steve
* Unary reduction operators are all 1-bit results.
*
* Revision 1.19 2001/07/27 04:51:44 steve * Revision 1.19 2001/07/27 04:51:44 steve
* Handle part select expressions as variants of * Handle part select expressions as variants of
* NetESignal/IVL_EX_SIGNAL objects, instead of * NetESignal/IVL_EX_SIGNAL objects, instead of