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authordgp <dgp@users.sourceforge.net>2005-10-18 13:19:11 (GMT)
committerdgp <dgp@users.sourceforge.net>2005-10-18 13:19:11 (GMT)
commit79d337cb08f74244e5ed1bdad09ea7e768ea273d (patch)
tree05fff8877cba4a1902cf04760eaacc672d76ea33 /generic/tclExecute.c
parenta604518cad44246120133ea4fe4192c6442e3d44 (diff)
downloadtcl-79d337cb08f74244e5ed1bdad09ea7e768ea273d.zip
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* generic/tclExecute.c: Added optimization for I32L64 systems to
avoid using bignums to perform int multiplies. The improvement shows up most dramatically in tclbench's matrix.bench.
Diffstat (limited to 'generic/tclExecute.c')
-rw-r--r--generic/tclExecute.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index 126f8d8..6663dfd 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -12,7 +12,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclExecute.c,v 1.214 2005/10/15 23:27:18 dgp Exp $
+ * RCS: @(#) $Id: tclExecute.c,v 1.215 2005/10/18 13:19:12 dgp Exp $
*/
#include "tclInt.h"
@@ -4498,7 +4498,27 @@ TclExecuteByteCode(interp, codePtr)
NEXT_INST_F(1, 1, 0);
}
- if ((*pc == INST_MULT) && (sizeof(Tcl_WideInt) >= 2*sizeof(long))
+ if ((sizeof(long) >= 2*sizeof(int)) && (*pc == INST_MULT)
+ && (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
+ long l1 = *((CONST long *)ptr1);
+ long l2 = *((CONST long *)ptr2);
+ if ((l1 <= INT_MAX) && (l1 >= INT_MIN)
+ && (l2 <= INT_MAX) && (l2 >= INT_MIN)) {
+ long lResult = l1 * l2;
+
+ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+ if (Tcl_IsShared(valuePtr)) {
+ TclNewLongObj(objResultPtr,lResult);
+ TRACE(("%s\n", O2S(objResultPtr)));
+ NEXT_INST_F(1, 2, 1);
+ }
+ TclSetLongObj(valuePtr, lResult);
+ TRACE(("%s\n", O2S(valuePtr)));
+ NEXT_INST_F(1, 1, 0);
+ }
+ }
+
+ if ((sizeof(Tcl_WideInt) >= 2*sizeof(long)) && (*pc == INST_MULT)
&& (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
Tcl_WideInt w1, w2, wResult;
TclGetWideIntFromObj(NULL, valuePtr, &w1);