patch 8.2.3199: Vim9: execution speed can be improved

brammool · brammool · commit a74901929e99 · 2021-07-22T12:26:14.000+02:00
Problem:    Vim9: execution speed can be improved.
Solution:   Make the break counter static.
diff --git a/src/version.c b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3199,
 /**/
     3198,
 /**/
diff --git a/src/vim9execute.c b/src/vim9execute.c
@@ -1526,8 +1526,6 @@ handle_debug(isn_T *iptr, ectx_T *ectx)
     static int
 exec_instructions(ectx_T *ectx)
 {
-    int		breakcheck_count = 0;
-    typval_T	*tv;
     int		ret = FAIL;
     int		save_trylevel_at_start = ectx->ec_trylevel_at_start;
 
@@ -1539,7 +1537,9 @@ exec_instructions(ectx_T *ectx)
 
     for (;;)
     {
+	static int  breakcheck_count = 0;  // using "static" makes it faster
 	isn_T	    *iptr;
+	typval_T    *tv;
 
 	if (++breakcheck_count >= 100)
 	{

Original file line number	Diff line number	Diff line change
`@@ -1526,8 +1526,6 @@ handle_debug(isn_T iptr, ectx_T ectx)`
`1526`	`1526`	`static int`
`1527`	`1527`	`exec_instructions(ectx_T *ectx)`
`1528`	`1528`	`{`
`1529`		`- int breakcheck_count = 0;`
`1530`		`- typval_T *tv;`
`1531`	`1529`	`int ret = FAIL;`
`1532`	`1530`	`int save_trylevel_at_start = ectx->ec_trylevel_at_start;`
`1533`	`1531`
`@@ -1539,7 +1537,9 @@ exec_instructions(ectx_T *ectx)`
`1539`	`1537`
`1540`	`1538`	`for (;;)`
`1541`	`1539`	`{`
	`1540`	`+ static int breakcheck_count = 0; // using "static" makes it faster`
`1542`	`1541`	`isn_T *iptr;`
	`1542`	`+ typval_T *tv;`
`1543`	`1543`
`1544`	`1544`	`if (++breakcheck_count >= 100)`
`1545`	`1545`	`{`