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//== llvm/CodeGen/GlobalISel/InstructionSelect.h -----------------*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file This file describes the interface of the MachineFunctionPass
/// responsible for selecting (possibly generic) machine instructions to
/// target-specific instructions.
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
#define LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
namespace llvm {
class BlockFrequencyInfo;
class ProfileSummaryInfo;
/// This pass is responsible for selecting generic machine instructions to
/// target-specific instructions. It relies on the InstructionSelector provided
/// by the target.
/// Selection is done by examining blocks in post-order, and instructions in
/// reverse order.
///
/// \post for all inst in MF: not isPreISelGenericOpcode(inst.opcode)
class InstructionSelect : public MachineFunctionPass {
public:
static char ID;
StringRef getPassName() const override { return "InstructionSelect"; }
void getAnalysisUsage(AnalysisUsage &AU) const override;
MachineFunctionProperties getRequiredProperties() const override {
return MachineFunctionProperties()
.set(MachineFunctionProperties::Property::IsSSA)
.set(MachineFunctionProperties::Property::Legalized)
.set(MachineFunctionProperties::Property::RegBankSelected);
}
MachineFunctionProperties getSetProperties() const override {
return MachineFunctionProperties().set(
MachineFunctionProperties::Property::Selected);
}
InstructionSelect(CodeGenOpt::Level OL);
InstructionSelect();
bool runOnMachineFunction(MachineFunction &MF) override;
protected:
BlockFrequencyInfo *BFI = nullptr;
ProfileSummaryInfo *PSI = nullptr;
CodeGenOpt::Level OptLevel = CodeGenOpt::None;
};
} // End namespace llvm.
#endif
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