The llvm.hexagon.M2.mpyu.nac.hl.s0 intrinsic; known as __builtin_HEXAGON_M2_mpyu_nac_hl_s0 in GCC.
See Implementation
The llvm.hexagon.M2.mpyu.nac.hl.s0 intrinsic; known as __builtin_HEXAGON_M2_mpyu_nac_hl_s0 in GCC.