From 7b4f7681140e940f8f4d1ac8980260c2c6189ced Mon Sep 17 00:00:00 2001
From: SChernykh <sergey.v.chernykh@gmail.com>
Date: Tue, 29 Sep 2020 21:22:11 +0200
Subject: [PATCH] RandomX: optimized soft AES code

Unrolled loop was 5-10% slower depending on CPU.
---
 src/crypto/randomx/aes_hash.cpp | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/crypto/randomx/aes_hash.cpp b/src/crypto/randomx/aes_hash.cpp
index 274a9d4c..eed82960 100644
--- a/src/crypto/randomx/aes_hash.cpp
+++ b/src/crypto/randomx/aes_hash.cpp
@@ -270,19 +270,22 @@ void hashAndFillAes1Rx4(void *scratchpad, size_t scratchpadSize, void *hash, voi
 
 					rx_prefetch_t0(prefetchPtr);
 					rx_prefetch_t0(prefetchPtr + 64);
+
+					scratchpadPtr += 128;
+					prefetchPtr += 128;
+
 					break;
+
 				default:
 					HASH_STATE(0);
 					FILL_STATE(0);
 					rx_prefetch_t0(prefetchPtr);
 
-					HASH_STATE(1);
-					FILL_STATE(1);
-					rx_prefetch_t0(prefetchPtr + 64);
-			}
+					scratchpadPtr += 64;
+					prefetchPtr += 64;
 
-			scratchpadPtr += 128;
-			prefetchPtr += 128;
+					break;
+			}
 		}
 		prefetchPtr = (const char*) scratchpad;
 		scratchpadEnd += PREFETCH_DISTANCE;