Add SSSE3 rotates when available

This change obtains the remaining 0.1 to 0.15 cpb. It should be engaged with -march=native

1 files changed, 1 insertions, 10 deletions

diff --git a/chacha.cpp b/chacha.cpp
index 080ccbfd..23fd3be8 100644
--- a/chacha.cpp
+++ b/chacha.cpp
@@ -34,10 +34,6 @@ std::string ChaCha_Policy::AlgorithmProvider() const
 	if (HasSSE2())

 		return "SSE2";

 #endif

-#if (CRYPTOPP_ARM_NEON_AVAILABLE)

-	if (HasNEON())

-		return "NEON";

-#endif

 	return "C++";

 }

 

@@ -96,11 +92,6 @@ unsigned int ChaCha_Policy::GetOptimalBlockSize() const
 		return 4*BYTES_PER_ITERATION;

 	else

 #endif

-#if (CRYPTOPP_ARM_NEON_AVAILABLE)

-	if (HasNEON())

-		return 4*BYTES_PER_ITERATION;

-	else

-#endif

 		return BYTES_PER_ITERATION;

 }

 

@@ -122,7 +113,7 @@ void ChaCha_Policy::OperateKeystream(KeystreamOperation operation,
 			if (m_state[12] < 4)

 				m_state[13]++;

 

-			input += 4*BYTES_PER_ITERATION;

+			input += !!xorInput*4*BYTES_PER_ITERATION;

 			output += 4*BYTES_PER_ITERATION;

 			iterationCount -= 4;

 		}