1//=- RISCVCombine.td - Define RISC-V Combine Rules -----------*- 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// 10//===----------------------------------------------------------------------===// 11 12include "llvm/Target/GlobalISel/Combine.td" 13 14def RISCVPreLegalizerCombiner: GICombiner< 15 "RISCVPreLegalizerCombinerImpl", [all_combines]> { 16} 17 18def RISCVO0PreLegalizerCombiner: GICombiner< 19 "RISCVO0PreLegalizerCombinerImpl", [optnone_combines]> { 20} 21 22// Post-legalization combines which are primarily optimizations. 23// TODO: Add more combines. 24def RISCVPostLegalizerCombiner 25 : GICombiner<"RISCVPostLegalizerCombinerImpl", 26 [sub_to_add, combines_for_extload, redundant_and, 27 identity_combines, shift_immed_chain, 28 commute_constant_to_rhs, simplify_neg_minmax]> { 29} 30