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1//===- MipsInstrCompiler.td - Compiler Pseudos and Patterns -*- tablegen -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file describes the various pseudo instructions used by the compiler,10// as well as Pat patterns used during instruction selection.11//12//===----------------------------------------------------------------------===//13 14 15def shiftMask_32 : PatFrag<(ops node:$lhs), (and node:$lhs, imm), [{16 return isUnneededShiftMask(N, 5);17}]>;18 19def shiftMask_64 : PatFrag<(ops node:$src0), (and node:$src0, imm), [{20 return isUnneededShiftMask(N, 6);21}]>;22 23foreach width = [32, 64] in {24defvar shiftMask = !cast<SDPatternOperator>("shiftMask_"#width);25def mshl_#width : PatFrags<(ops node:$src0, node:$src1),26 [(shl node:$src0, node:$src1), (shl node:$src0, (shiftMask node:$src1))]>;27 28def msrl_#width : PatFrags<(ops node:$src0, node:$src1),29 [(srl node:$src0, node:$src1), (srl node:$src0, (shiftMask node:$src1))]>;30 31def msra_#width : PatFrags<(ops node:$src0, node:$src1),32 [(sra node:$src0, node:$src1), (sra node:$src0, (shiftMask node:$src1))]>;33}34