[Bug target/38749] native and core2 differ on core2 hardware (add -mcx16 and -msahf when build with -march=core2)

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2009-01-06 21:48 -------
      {"core2", PROCESSOR_CORE2, CPU_CORE2,
        PTA_64BIT | PTA_MMX | PTA_SSE | PTA_SSE2 | PTA_SSE3
        | PTA_SSSE3 | PTA_CX16},


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38749