utf8n_to_uvchr_msgs: Add branch prediction

khwilliamson · khwilliamson · commit 88c138765b98 · 2024-10-02T09:33:47.000-06:00
Most calls to this function will have it succeed
diff --git a/inline.h b/inline.h
@@ -3042,7 +3042,7 @@ Perl_utf8n_to_uvchr_msgs(const U8 *s,
             uv = UTF8_ACCUMULATE(uv, *s);
         }
 
-        if (state == 0) {
+        if (LIKELY(state == 0)) {
 #ifdef EBCDIC
             uv = UNI_TO_NATIVE(uv);
 #endif

Original file line number	Diff line number	Diff line change
`@@ -3042,7 +3042,7 @@ Perl_utf8n_to_uvchr_msgs(const U8 *s,`
`3042`	`3042`	`uv = UTF8_ACCUMULATE(uv, *s);`
`3043`	`3043`	`}`
`3044`	`3044`
`3045`		`- if (state == 0) {`
	`3045`	`+ if (LIKELY(state == 0)) {`
`3046`	`3046`	`#ifdef EBCDIC`
`3047`	`3047`	`uv = UNI_TO_NATIVE(uv);`
`3048`	`3048`	`#endif`