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-exception 6// 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