1 //===-- HexagonIntrinsicsDerived.td - Derived intrinsics ---*- tablegen -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Multiply 64-bit and use lower result 11 // 12 // Optimized with intrinisics accumulates 13 // 14 def : Pat <(mul DoubleRegs:$src1, DoubleRegs:$src2), 15 (COMBINE_rr 16 (Hexagon_M2_maci 17 (Hexagon_M2_maci (EXTRACT_SUBREG (MPYU64 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg), 18 (EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg)), 19 subreg_hireg), 20 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg), 21 (EXTRACT_SUBREG DoubleRegs:$src2, subreg_hireg)), 22 (EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg), 23 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_hireg)), 24 (EXTRACT_SUBREG (MPYU64 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg), 25 (EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg)), 26 subreg_loreg))>; 27 28 29 30
