The llvm.hexagon.M2.mpy.nac.sat.ll.s0 intrinsic; known as __builtin_HEXAGON_M2_mpy_nac_sat_ll_s0 in GCC.
See Implementation
The llvm.hexagon.M2.mpy.nac.sat.ll.s0 intrinsic; known as __builtin_HEXAGON_M2_mpy_nac_sat_ll_s0 in GCC.