Optimizations to ParseFinalize() to make up for the extra cleanup associated

with the allocated parser stack.  This branch now runs faster than trunk
and is less than 300 bytes larger.

FossilOrigin-Name: f7290db63cc2568090c14dffc4ea4eadfacb5b94b50a1852ef6eefd9e2e32533

tool/lempar.c

@@ -83,6 +83,8 @@
 **    YY_NO_ACTION       The yy_action[] code for no-op
 **    YY_MIN_REDUCE      Minimum value for reduce actions
 **    YY_MAX_REDUCE      Maximum value for reduce actions
+**    YY_MIN_DSTRCTR     Minimum symbol value that has a destructor
+**    YY_MAX_DSTRCTR     Maximum symbol value that has a destructor
 */
 #ifndef INTERFACE
 # define INTERFACE 1
@@ -438,7 +440,24 @@ static void yy_pop_parser_stack(yyParser *pParser){
 */
 void ParseFinalize(void *p){
   yyParser *pParser = (yyParser*)p;
-  while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser);
+
+  /* In-lined version of calling yy_pop_parser_stack() for each
+  ** element left in the stack */
+  yyStackEntry *yytos = pParser->yytos;
+  while( yytos>pParser->yystack ){
+#ifndef NDEBUG
+    if( yyTraceFILE ){
+      fprintf(yyTraceFILE,"%sPopping %s\n",
+        yyTracePrompt,
+        yyTokenName[yytos->major]);
+    }
+#endif
+    if( yytos->major>=YY_MIN_DSTRCTR && yytos->major<=YY_MAX_DSTRCTR ){
+      yy_destructor(pParser, yytos->major, &yytos->minor);
+    }
+    yytos--;
+  }
+
 #if YYGROWABLESTACK
   if( pParser->yystack!=pParser->yystk0 ) YYFREE(pParser->yystack);
 #endif