2013-03-02 117 views

回答

2

这仅仅是一个ICC选项:

 -xW -- Can generate SSE2 and SSE instructions, and it can 
    optimize for Intel(R) Pentium(R) 4 processors and Intel(R) 
    Xeon(R) processors with SSE2. This is the default on Linux 
    systems using Intel(R) 64 architecture. This option is the 
    same as specifying -march=pentium4.