crypto: serpent-sse2 - change transpose_4x4 to only use integer instructions
Matrix transpose macro in serpent-sse2 uses mix of SSE2 integer and SSE floating
point instructions, which might cause performance penality on some CPUs.
This patch replaces transpose_4x4 macro with version that uses only SSE2
integer instructions.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
index 7f24a15..3ee1ff0 100644
--- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
+++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
@@ -585,23 +585,20 @@
get_key(i, 1, RK1); \
SBOX ## _2(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \
-#define transpose_4x4(x0, x1, x2, x3, t1, t2, t3) \
- movdqa x2, t3; \
- movdqa x0, t1; \
- unpcklps x3, t3; \
+#define transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \
movdqa x0, t2; \
- unpcklps x1, t1; \
- unpckhps x1, t2; \
- movdqa t3, x1; \
- unpckhps x3, x2; \
- movdqa t1, x0; \
- movhlps t1, x1; \
- movdqa t2, t1; \
- movlhps t3, x0; \
- movlhps x2, t1; \
- movhlps t2, x2; \
- movdqa x2, x3; \
- movdqa t1, x2;
+ punpckldq x1, x0; \
+ punpckhdq x1, t2; \
+ movdqa x2, t1; \
+ punpckhdq x3, x2; \
+ punpckldq x3, t1; \
+ movdqa x0, x1; \
+ punpcklqdq t1, x0; \
+ punpckhqdq t1, x1; \
+ movdqa t2, x3; \
+ punpcklqdq x2, t2; \
+ punpckhqdq x2, x3; \
+ movdqa t2, x2;
#define read_blocks(in, x0, x1, x2, x3, t0, t1, t2) \
movdqu (0*4*4)(in), x0; \
