10b57cec5SDimitry Andric //== llvm/CodeGen/GlobalISel/Legalizer.h ---------------- -*- C++ -*-==// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric /// \file A pass to convert the target-illegal operations created by IR -> MIR 100b57cec5SDimitry Andric /// translation into ones the target expects to be able to select. This may 110b57cec5SDimitry Andric /// occur in multiple phases, for example G_ADD <2 x i8> -> G_ADD <2 x i16> -> 120b57cec5SDimitry Andric /// G_ADD <4 x i16>. 130b57cec5SDimitry Andric /// 140b57cec5SDimitry Andric /// The LegalizeHelper class is where most of the work happens, and is designed 150b57cec5SDimitry Andric /// to be callable from other passes that find themselves with an illegal 160b57cec5SDimitry Andric /// instruction. 170b57cec5SDimitry Andric // 180b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 190b57cec5SDimitry Andric 20fe6060f1SDimitry Andric #ifndef LLVM_CODEGEN_GLOBALISEL_LEGALIZER_H 21fe6060f1SDimitry Andric #define LLVM_CODEGEN_GLOBALISEL_LEGALIZER_H 220b57cec5SDimitry Andric 2381ad6265SDimitry Andric #include "llvm/ADT/ArrayRef.h" 2481ad6265SDimitry Andric #include "llvm/ADT/StringRef.h" 2581ad6265SDimitry Andric #include "llvm/CodeGen/MachineFunction.h" 260b57cec5SDimitry Andric #include "llvm/CodeGen/MachineFunctionPass.h" 270b57cec5SDimitry Andric 280b57cec5SDimitry Andric namespace llvm { 290b57cec5SDimitry Andric 3081ad6265SDimitry Andric class LegalizerInfo; 3181ad6265SDimitry Andric class MachineIRBuilder; 3281ad6265SDimitry Andric class MachineInstr; 3381ad6265SDimitry Andric class GISelChangeObserver; 345ffd83dbSDimitry Andric class LostDebugLocObserver; 350b57cec5SDimitry Andric 360b57cec5SDimitry Andric class Legalizer : public MachineFunctionPass { 370b57cec5SDimitry Andric public: 380b57cec5SDimitry Andric static char ID; 390b57cec5SDimitry Andric 40480093f4SDimitry Andric struct MFResult { 41480093f4SDimitry Andric bool Changed; 42480093f4SDimitry Andric const MachineInstr *FailedOn; 43480093f4SDimitry Andric }; 440b57cec5SDimitry Andric 45480093f4SDimitry Andric private: 460b57cec5SDimitry Andric /// Initialize the field members using \p MF. 470b57cec5SDimitry Andric void init(MachineFunction &MF); 480b57cec5SDimitry Andric 490b57cec5SDimitry Andric public: 500b57cec5SDimitry Andric // Ctor, nothing fancy. 510b57cec5SDimitry Andric Legalizer(); 520b57cec5SDimitry Andric 530b57cec5SDimitry Andric StringRef getPassName() const override { return "Legalizer"; } 540b57cec5SDimitry Andric 550b57cec5SDimitry Andric void getAnalysisUsage(AnalysisUsage &AU) const override; 560b57cec5SDimitry Andric 570b57cec5SDimitry Andric MachineFunctionProperties getRequiredProperties() const override { 580b57cec5SDimitry Andric return MachineFunctionProperties().set( 590b57cec5SDimitry Andric MachineFunctionProperties::Property::IsSSA); 600b57cec5SDimitry Andric } 610b57cec5SDimitry Andric 620b57cec5SDimitry Andric MachineFunctionProperties getSetProperties() const override { 630b57cec5SDimitry Andric return MachineFunctionProperties().set( 640b57cec5SDimitry Andric MachineFunctionProperties::Property::Legalized); 650b57cec5SDimitry Andric } 660b57cec5SDimitry Andric 670b57cec5SDimitry Andric MachineFunctionProperties getClearedProperties() const override { 68480093f4SDimitry Andric return MachineFunctionProperties().set( 69480093f4SDimitry Andric MachineFunctionProperties::Property::NoPHIs); 700b57cec5SDimitry Andric } 710b57cec5SDimitry Andric 720b57cec5SDimitry Andric bool runOnMachineFunction(MachineFunction &MF) override; 73480093f4SDimitry Andric 74480093f4SDimitry Andric static MFResult 75480093f4SDimitry Andric legalizeMachineFunction(MachineFunction &MF, const LegalizerInfo &LI, 76480093f4SDimitry Andric ArrayRef<GISelChangeObserver *> AuxObservers, 775ffd83dbSDimitry Andric LostDebugLocObserver &LocObserver, 78480093f4SDimitry Andric MachineIRBuilder &MIRBuilder); 790b57cec5SDimitry Andric }; 800b57cec5SDimitry Andric } // End namespace llvm. 810b57cec5SDimitry Andric 820b57cec5SDimitry Andric #endif 83