[PATCH] D138760: BLAKE3: do not try to use neon on big-endian aarch64

[Håvard Eidnes via Phabricator via llvm-commits]

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...because this will later on hit

  #error "This implementation only supports little-endian ARM."

in `blake3_neon.c`.


Repository:
  rZORG LLVM Github Zorg

https://reviews.llvm.org/D138760

Files:
  llvm/lib/Support/BLAKE3/blake3_impl.h


Index: llvm/lib/Support/BLAKE3/blake3_impl.h
===================================================================
--- llvm/lib/Support/BLAKE3/blake3_impl.h
+++ llvm/lib/Support/BLAKE3/blake3_impl.h
@@ -64,7 +64,11 @@
 #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


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