Test ARM strlen.

Author: ncruces

sqlite3/strings.c

@@ -66,12 +66,10 @@ size_t strlen(const char *s) {
   const v128_t *w = (void *)(s - align);
 
   while (true) {
-    if (!wasm_i8x16_all_true(*w)) {
-      int mask =
-          wasm_i8x16_bitmask(wasm_i8x16_eq(*w, (v128_t){})) >> align << align;
-      if (mask) {
-        return (char *)w - s + __builtin_ctz(mask);
-      }
+    const v128_t cmp = wasm_i8x16_eq(*w, (v128_t){});
+    if (wasm_v128_any_true(cmp)) {
+      int mask = wasm_i8x16_bitmask(cmp) >> align << align;
+      return (char *)w - s + __builtin_ctz(mask);
     }
     align = 0;
     w++;
@@ -138,10 +136,9 @@ char *strchrnul(const char *s, int c) {
   const v128_t wc = wasm_i8x16_splat(c);
 
   while (true) {
-    int mask = wasm_i8x16_bitmask(wasm_i8x16_eq(*w, (v128_t){}) |
-                                  wasm_i8x16_eq(*w, wc)) >>
-               align << align;
-    if (mask) {
+    const v128_t cmp = wasm_i8x16_eq(*w, (v128_t){}) | wasm_i8x16_eq(*w, wc);
+    if (wasm_v128_any_true(cmp)) {
+      int mask = wasm_i8x16_bitmask(cmp) >> align << align;
       return (char *)w + __builtin_ctz(mask);
     }
     align = 0;