(x86 asm): Zero the high parts of the ?MM registers if available.

[catacomb] / symm / chacha.c

diff --git a/symm/chacha.c b/symm/chacha.c
index 3419861..9b83eea 100644 (file)
--- a/symm/chacha.c
+++ b/symm/chacha.c
@@ -72,6 +72,7 @@ static void simple_core(unsigned r, const chacha_matrix src,
 
 #if CPUFAM_X86 || CPUFAM_AMD64
 extern core__functype chacha_core_x86ish_sse2;
+extern core__functype chacha_core_x86ish_avx;
 #endif
 
 #if CPUFAM_ARMEL
@@ -85,6 +86,8 @@ extern core__functype chacha_core_arm64;
 static core__functype *pick_core(void)
 {
 #if CPUFAM_X86 || CPUFAM_AMD64
+  DISPATCH_PICK_COND(chacha_core, chacha_core_x86ish_avx,
+                    cpu_feature_p(CPUFEAT_X86_AVX));
   DISPATCH_PICK_COND(chacha_core, chacha_core_x86ish_sse2,
                     cpu_feature_p(CPUFEAT_X86_SSE2));
 #endif