contrib/llvm/lib/Target/Hexagon/HexagonIntrinsicsDerived.td

   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       (i64
  16        (COMBINE_rr
  17         (HEXAGON_M2_maci
  18          (HEXAGON_M2_maci
  19           (i32
  20            (EXTRACT_SUBREG
  21             (i64
  22              (MPYU64 (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1),
  23                                           subreg_loreg)),
  24                      (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2),
  25                                           subreg_loreg)))),
  26             subreg_hireg)),
  27           (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_loreg)),
  28           (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2), subreg_hireg))),
  29          (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2), subreg_loreg)),
  30          (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_hireg))),
  31         (i32
  32          (EXTRACT_SUBREG
  33           (i64
  34            (MPYU64 (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_loreg)),
  35                    (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2),
  36                                         subreg_loreg)))), subreg_loreg))))>;
  37
  38
  39