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30 lines
1.3 KiB
TableGen
30 lines
1.3 KiB
TableGen
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//===-- HexagonIntrinsicsDerived.td - Derived intrinsics ---*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Multiply 64-bit and use lower result
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//
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// Optimized with intrinisics accumulates
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//
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def : Pat <(mul DoubleRegs:$src1, DoubleRegs:$src2),
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(COMBINE_rr
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(Hexagon_M2_maci
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(Hexagon_M2_maci (EXTRACT_SUBREG (MPYU64 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg),
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(EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg)),
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subreg_hireg),
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(EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg),
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(EXTRACT_SUBREG DoubleRegs:$src2, subreg_hireg)),
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(EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg),
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(EXTRACT_SUBREG DoubleRegs:$src1, subreg_hireg)),
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(EXTRACT_SUBREG (MPYU64 (EXTRACT_SUBREG DoubleRegs:$src1, subreg_loreg),
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(EXTRACT_SUBREG DoubleRegs:$src2, subreg_loreg)),
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subreg_loreg))>;
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