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https://github.com/c64scene-ar/llvm-6502.git
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81e900d14c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156631 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.4 KiB
TableGen
40 lines
1.4 KiB
TableGen
//===-- 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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(i64
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(COMBINE_rr
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(HEXAGON_M2_maci
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(HEXAGON_M2_maci
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(i32
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(EXTRACT_SUBREG
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(i64
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(MPYU64 (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1),
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subreg_loreg)),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2),
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subreg_loreg)))),
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subreg_hireg)),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_loreg)),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2), subreg_hireg))),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2), subreg_loreg)),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_hireg))),
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(i32
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(EXTRACT_SUBREG
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(i64
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(MPYU64 (i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src1), subreg_loreg)),
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(i32 (EXTRACT_SUBREG (i64 DoubleRegs:$src2),
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subreg_loreg)))), subreg_loreg))))>;
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