Merge pull request #803 from devnexen/clang__assume

XXH_ASSUME macro using `__builtin_assume` if supported (clang only fo…
Cyan4973 · Mar 9, 2023 · adc4fc8 · adc4fc8
2 parents 74c416c + 4ff3a1b
commit adc4fc8
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/xxhash.h b/xxhash.h
@@ -2091,7 +2091,11 @@ static int XXH_isLittleEndian(void)
 #  define XXH_UNREACHABLE()
 #endif
 
-#define XXH_ASSUME(c) if (!(c)) { XXH_UNREACHABLE(); }
+#if XXH_HAS_BUILTIN(__builtin_assume)
+#  define XXH_ASSUME(c) __builtin_assume(c)
+#else
+#  define XXH_ASSUME(c) if (!(c)) { XXH_UNREACHABLE(); }
+#endif
 
 /*!
  * @internal