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Fix that save expression lookaside always clears cached variable values.

This commit is contained in:
steve 2007-04-01 05:26:17 +00:00
parent 8856c07d88
commit ea74940be4
1 changed files with 11 additions and 6 deletions
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17
tgt-vvp/vector.c
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: vector.c,v 1.14 2007/03/22 16:08:18 steve Exp $"
#ident "$Id: vector.c,v 1.15 2007/04/01 05:26:17 steve Exp $"
#endif
# include "vvp_priv.h"
@ -167,17 +167,19 @@ void save_expression_lookaside(unsigned addr, ivl_expr_t exp, unsigned wid)
assert(addr >= 8);
assert((addr+wid) <= MAX_VEC);
/* Only certain types of expressions are savable. */
if ( ! test_expression_savable(exp))
return;
/* When saving an expression to the lookaside, also clear the
signal saved in the lookaside for these bits. The reason is
that an expression calculation will replace any signal
bits. */
for (idx = 0 ; idx < wid ; idx += 1)
set_sig(addr+idx, 0, 0, 0);
/* Only certain types of expressions are savable. */
if ( ! test_expression_savable(exp))
return;
for (idx = 0 ; idx < wid ; idx += 1) {
set_exp(addr+idx, exp, idx);
set_sig(addr+idx, 0, 0, 0);
}
if ((addr+wid) > lookaside_top)
@ -372,6 +374,9 @@ unsigned allocate_vector_exp(ivl_expr_t exp, unsigned wid,
/*
* $Log: vector.c,v $
* Revision 1.15 2007/04/01 05:26:17 steve
* Fix that save expression lookaside always clears cached variable values.
*
* Revision 1.14 2007/03/22 16:08:18 steve
* Spelling fixes from Larry
*