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6678优化问题



你好,我想问一下6678使用C66指令集需要添加什么库或头文件吗?我怎么编译的时候,C66新添加的指令都编译不通过,错误是Illegal register pair/quad,如DPACKL2   s0:s1, s3:s2, r1:r0,我看指令集就是这么写的啊