Update comments

1 files changed, 4 insertions, 2 deletions

diff --git a/blake2s-simd.cpp b/blake2s-simd.cpp
index 37baf5a1..419ac413 100644
--- a/blake2s-simd.cpp
+++ b/blake2s-simd.cpp
@@ -735,13 +735,15 @@ inline uint32x4_p VectorShiftLeftOctet(const uint32x4_p a)
 template <unsigned int E1, unsigned int E2>

 inline uint32x4_p VectorSet32(const uint32x4_p a, const uint32x4_p b)

 {

-    // Re-index

+    // Re-index. I'd like to use something like Z=Y*4 and then

+    // VectorShiftLeftOctet<Z>(b) but it crashes early Red Hat

+    // GCC compilers.

     enum {X=E1&3, Y=E2&3};

 

     // Don't care element

     const unsigned int DC = 31;

 

-    // Element 3 combinations

+    // Element 0 combinations

     if (X == 0 && Y == 0)

     {

         const uint8x16_p mask = {0,1,2,3, 16,17,18,19, DC,DC,DC,DC, DC,DC,DC,DC};