Replace scalar loops with SIMD spans, packed stores, and direct wrap-pad checks

1 files changed, 2 insertions, 4 deletions

diff --git a/src/compat.h b/src/compat.h
index c0ae6fa..dc345d0 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -209,10 +209,8 @@ static inline bool term_has_prefix_ci(const char *s, const char *prefix)
     for (; *prefix; prefix++, s++) {
         unsigned char a = (unsigned char)*s;
         unsigned char b = (unsigned char)*prefix;
-        if (a >= 'A' && a <= 'Z')
-            a += 'a' - 'A';
-        if (b >= 'A' && b <= 'Z')
-            b += 'a' - 'A';
+        a |= ((unsigned)(a - 'A') < 26) ? 0x20 : 0;
+        b |= ((unsigned)(b - 'A') < 26) ? 0x20 : 0;
         if (a != b)
             return false;
     }