Using the GNU Compiler Collection (GCC): TI C6X Built-in Functions

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#### 6.57.29 TI C6X Built-in Functions

GCC provides intrinsics to access certain instructions of the TI C6X processors. These intrinsics, listed below, are available after inclusion of the `c6x_intrinsics.h` header file. They map directly to C6X instructions.

    int _sadd (int, int)
    int _ssub (int, int)
    int _sadd2 (int, int)
    int _ssub2 (int, int)
    long long _mpy2 (int, int)
    long long _smpy2 (int, int)
    int _add4 (int, int)
    int _sub4 (int, int)
    int _saddu4 (int, int)

    int _smpy (int, int)
    int _smpyh (int, int)
    int _smpyhl (int, int)
    int _smpylh (int, int)

    int _sshl (int, int)
    int _subc (int, int)

    int _avg2 (int, int)
    int _avgu4 (int, int)

    int _clrr (int, int)
    int _extr (int, int)
    int _extru (int, int)
    int _abs (int)
    int _abs2 (int)