From 14cafa5e9efa20dab26e93ffd229fb6f5d83aa3e Mon Sep 17 00:00:00 2001
From: Emman <emman.sun@cargosmart.com>
Date: Tue, 23 Mar 2021 11:32:05 +0800
Subject: [PATCH] MAGIC - continue to improve sm4 performance

---
 sm4/asm_amd64.s | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/sm4/asm_amd64.s b/sm4/asm_amd64.s
index 0887ed1..6eb9cea 100644
--- a/sm4/asm_amd64.s
+++ b/sm4/asm_amd64.s
@@ -241,20 +241,15 @@ TEXT ·encryptBlocksAsm(SB),NOSPLIT,$0
 
 loop:
   PINSRD $0, 0(AX)(CX*1), x
-  PINSRD $1, 0(AX)(CX*1), x
-  PINSRD $2, 0(AX)(CX*1), x
-  PINSRD $3, 0(AX)(CX*1), x
+  PSHUFD $0, x, x
   PXOR t1, x
   PXOR t2, x
   PXOR t3, x
-  
   SM4_TAO_L1(x, y)
   PXOR x, t0
 
   PINSRD $0, 4(AX)(CX*1), x
-  PINSRD $1, 4(AX)(CX*1), x
-  PINSRD $2, 4(AX)(CX*1), x
-  PINSRD $3, 4(AX)(CX*1), x
+  PSHUFD $0, x, x
   PXOR t0, x
   PXOR t2, x
   PXOR t3, x
@@ -262,9 +257,7 @@ loop:
   PXOR x, t1  
 
   PINSRD $0, 8(AX)(CX*1), x
-  PINSRD $1, 8(AX)(CX*1), x
-  PINSRD $2, 8(AX)(CX*1), x
-  PINSRD $3, 8(AX)(CX*1), x
+  PSHUFD $0, x, x
   PXOR t0, x
   PXOR t1, x
   PXOR t3, x
@@ -272,9 +265,7 @@ loop:
   PXOR x, t2
 
   PINSRD $0, 12(AX)(CX*1), x
-  PINSRD $1, 12(AX)(CX*1), x
-  PINSRD $2, 12(AX)(CX*1), x
-  PINSRD $3, 12(AX)(CX*1), x
+  PSHUFD $0, x, x
   PXOR t0, x
   PXOR t1, x
   PXOR t2, x
@@ -346,7 +337,6 @@ loop:
   PXOR t1, x
   PXOR t2, x
   PXOR t3, x
-  
   SM4_TAO_L1(x, y)
   PXOR x, t0