1 //===-- HexagonIntrinsicsDerived.td - Derived intrinsics ---*- tablegen -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Multiply 64-bit and use lower result
12 // Optimized with intrinisics accumulates
14 def : Pat <(mul DoubleRegs:$src1, DoubleRegs:$src2),
17 (Hexagon_M2_maci (EXTRACT_SUBREG (MPYU64 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg),
18 (EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg)),
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)),