forked from OSchip/llvm-project
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===- MipsInstructionSelector.cpp ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file implements the targeting of the InstructionSelector class for
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/// Mips.
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/// \todo This should be generated by TableGen.
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//===----------------------------------------------------------------------===//
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#include "MipsRegisterBankInfo.h"
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#include "MipsSubtarget.h"
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#include "MipsTargetMachine.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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namespace {
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class MipsInstructionSelector : public InstructionSelector {
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public:
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MipsInstructionSelector(const MipsTargetMachine &TM, const MipsSubtarget &STI,
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const MipsRegisterBankInfo &RBI);
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bool select(MachineInstr &I, CodeGenCoverage &CoverageInfo) const override;
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private:
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const MipsInstrInfo &TII;
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const MipsRegisterInfo &TRI;
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};
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} // end anonymous namespace
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MipsInstructionSelector::MipsInstructionSelector(
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const MipsTargetMachine &TM, const MipsSubtarget &STI,
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const MipsRegisterBankInfo &RBI)
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: InstructionSelector(), TII(*STI.getInstrInfo()),
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TRI(*STI.getRegisterInfo()) {}
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bool MipsInstructionSelector::select(MachineInstr &I,
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CodeGenCoverage &CoverageInfo) const {
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if (!isPreISelGenericOpcode(I.getOpcode())) {
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// Not global isel generic opcode.
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// TODO: select copy
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return true;
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}
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// We didn't select anything.
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return false;
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}
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namespace llvm {
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InstructionSelector *createMipsInstructionSelector(const MipsTargetMachine &TM,
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MipsSubtarget &Subtarget,
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MipsRegisterBankInfo &RBI) {
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return new MipsInstructionSelector(TM, Subtarget, RBI);
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}
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} // end namespace llvm
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