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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)