c/blake3_impl.h: don't try to do NEON on big-endian aarch64.

...because this would otherwise hit #error "This implementation only supports little-endian ARM." in c/blake3_neon.c.
BLAKE3-team · Sep 19, 2023 · 8bfe93f · 8bfe93f
1 parent 8cdfaa4
commit 8bfe93f
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/c/blake3_impl.h b/c/blake3_impl.h
@@ -51,7 +51,11 @@ enum blake3_flags {
 #if !defined(BLAKE3_USE_NEON) 
   // If BLAKE3_USE_NEON not manually set, autodetect based on AArch64ness
   #if defined(IS_AARCH64)
-    #define BLAKE3_USE_NEON 1
+    #if defined(__ARM_BIG_ENDIAN)
+      #define BLAKE3_USE_NEON 0
+    #else
+      #define BLAKE3_USE_NEON 1
+    #endif
   #else
     #define BLAKE3_USE_NEON 0
   #endif