10b57cec5SDimitry Andric //== llvm/CodeGen/GlobalISel/InstructionSelect.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 /// \file This file describes the interface of the MachineFunctionPass 90b57cec5SDimitry Andric /// responsible for selecting (possibly generic) machine instructions to 100b57cec5SDimitry Andric /// target-specific instructions. 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #ifndef LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H 140b57cec5SDimitry Andric #define LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H 150b57cec5SDimitry Andric 1681ad6265SDimitry Andric #include "llvm/ADT/StringRef.h" 1781ad6265SDimitry Andric #include "llvm/CodeGen/MachineFunction.h" 180b57cec5SDimitry Andric #include "llvm/CodeGen/MachineFunctionPass.h" 1981ad6265SDimitry Andric #include "llvm/Support/CodeGen.h" 200b57cec5SDimitry Andric 210b57cec5SDimitry Andric namespace llvm { 22fe6060f1SDimitry Andric 23fe6060f1SDimitry Andric class BlockFrequencyInfo; 24fe6060f1SDimitry Andric class ProfileSummaryInfo; 25fe6060f1SDimitry Andric 260b57cec5SDimitry Andric /// This pass is responsible for selecting generic machine instructions to 270b57cec5SDimitry Andric /// target-specific instructions. It relies on the InstructionSelector provided 280b57cec5SDimitry Andric /// by the target. 290b57cec5SDimitry Andric /// Selection is done by examining blocks in post-order, and instructions in 300b57cec5SDimitry Andric /// reverse order. 310b57cec5SDimitry Andric /// 320b57cec5SDimitry Andric /// \post for all inst in MF: not isPreISelGenericOpcode(inst.opcode) 330b57cec5SDimitry Andric class InstructionSelect : public MachineFunctionPass { 340b57cec5SDimitry Andric public: 350b57cec5SDimitry Andric static char ID; getPassName()360b57cec5SDimitry Andric StringRef getPassName() const override { return "InstructionSelect"; } 370b57cec5SDimitry Andric 380b57cec5SDimitry Andric void getAnalysisUsage(AnalysisUsage &AU) const override; 390b57cec5SDimitry Andric getRequiredProperties()400b57cec5SDimitry Andric MachineFunctionProperties getRequiredProperties() const override { 410b57cec5SDimitry Andric return MachineFunctionProperties() 420b57cec5SDimitry Andric .set(MachineFunctionProperties::Property::IsSSA) 430b57cec5SDimitry Andric .set(MachineFunctionProperties::Property::Legalized) 440b57cec5SDimitry Andric .set(MachineFunctionProperties::Property::RegBankSelected); 450b57cec5SDimitry Andric } 460b57cec5SDimitry Andric getSetProperties()470b57cec5SDimitry Andric MachineFunctionProperties getSetProperties() const override { 480b57cec5SDimitry Andric return MachineFunctionProperties().set( 490b57cec5SDimitry Andric MachineFunctionProperties::Property::Selected); 500b57cec5SDimitry Andric } 510b57cec5SDimitry Andric 525f757f3fSDimitry Andric InstructionSelect(CodeGenOptLevel OL); 530b57cec5SDimitry Andric InstructionSelect(); 540b57cec5SDimitry Andric 550b57cec5SDimitry Andric bool runOnMachineFunction(MachineFunction &MF) override; 56fe6060f1SDimitry Andric 57fe6060f1SDimitry Andric protected: 58fe6060f1SDimitry Andric BlockFrequencyInfo *BFI = nullptr; 59fe6060f1SDimitry Andric ProfileSummaryInfo *PSI = nullptr; 60fe6060f1SDimitry Andric 615f757f3fSDimitry Andric CodeGenOptLevel OptLevel = CodeGenOptLevel::None; 620b57cec5SDimitry Andric }; 630b57cec5SDimitry Andric } // End namespace llvm. 640b57cec5SDimitry Andric 650b57cec5SDimitry Andric #endif 66