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//
14def : 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
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40