Revert back AES optimization.

Author: xmrig

Diff for: src/amd/opencl/wolf-aes.cl

@@ -89,27 +89,14 @@ inline uint4 AES_Round_bittube2(const __local uint *AES0, const __local uint *AE
 
 uint4 AES_Round(const __local uint *AES0, const __local uint *AES1, const __local uint *AES2, const __local uint *AES3, const uint4 X, uint4 key)
 {
-    key.s0 ^= AES0[BYTE(X.s0, 0)];
-    key.s1 ^= AES0[BYTE(X.s1, 0)];
-    key.s2 ^= AES0[BYTE(X.s2, 0)];
-    key.s3 ^= AES0[BYTE(X.s3, 0)];
+    uint4 Y;
+    Y.s0 = AES0[BYTE(X.s0, 0)] ^ AES1[BYTE(X.s1, 1)] ^ AES2[BYTE(X.s2, 2)] ^ AES3[BYTE(X.s3, 3)];
+    Y.s1 = AES0[BYTE(X.s1, 0)] ^ AES1[BYTE(X.s2, 1)] ^ AES2[BYTE(X.s3, 2)] ^ AES3[BYTE(X.s0, 3)];
+    Y.s2 = AES0[BYTE(X.s2, 0)] ^ AES1[BYTE(X.s3, 1)] ^ AES2[BYTE(X.s0, 2)] ^ AES3[BYTE(X.s1, 3)];
+    Y.s3 = AES0[BYTE(X.s3, 0)] ^ AES1[BYTE(X.s0, 1)] ^ AES2[BYTE(X.s1, 2)] ^ AES3[BYTE(X.s2, 3)];
+    Y ^= key;
 
-    key.s0 ^= AES2[BYTE(X.s2, 2)];
-    key.s1 ^= AES2[BYTE(X.s3, 2)];
-    key.s2 ^= AES2[BYTE(X.s0, 2)];
-    key.s3 ^= AES2[BYTE(X.s1, 2)];
-
-    key.s0 ^= AES1[BYTE(X.s1, 1)];
-    key.s1 ^= AES1[BYTE(X.s2, 1)];
-    key.s2 ^= AES1[BYTE(X.s3, 1)];
-    key.s3 ^= AES1[BYTE(X.s0, 1)];
-
-    key.s0 ^= AES3[BYTE(X.s3, 3)];
-    key.s1 ^= AES3[BYTE(X.s0, 3)];
-    key.s2 ^= AES3[BYTE(X.s1, 3)];
-    key.s3 ^= AES3[BYTE(X.s2, 3)];
-
-    return key;
+    return(Y);
 }
 
 #endif