sm3: amd64, try LEA to replace ADD

[Sun Yimin]

LEA or ADD instruction?

[Sun Yimin]

经测试，性能反而有所下降。

[Sun Yimin]

怎么用

LEAL     const(y0)(e*1), y2;                 \ // y2 = a <<< 12 + e + T

替代

	MOVL     e, y2;                              \
	ADDL     $const, y2;                         \
	ADDL     y0, y2;                             \ // y2 = a <<< 12 + e + T  

性能反而下降呢？

[Sun Yimin]

golang/go@d8ec5eb