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43ee82f217
Enable multiple COPY hints to eliminate more COPYs during register allocation. Note that this is something all targets should do, see https://reviews.llvm.org/D38128. Review: Yonghong Song llvm-svn: 325457
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
//===-- BPFRegisterInfo.h - BPF Register Information Impl -------*- 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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//
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// This file contains the BPF implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_BPF_BPFREGISTERINFO_H
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#define LLVM_LIB_TARGET_BPF_BPFREGISTERINFO_H
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#include "llvm/CodeGen/TargetRegisterInfo.h"
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#define GET_REGINFO_HEADER
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#include "BPFGenRegisterInfo.inc"
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namespace llvm {
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struct BPFRegisterInfo : public BPFGenRegisterInfo {
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BPFRegisterInfo();
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const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
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BitVector getReservedRegs(const MachineFunction &MF) const override;
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bool enableMultipleCopyHints() const override { return true; }
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void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
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unsigned FIOperandNum,
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RegScavenger *RS = nullptr) const override;
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unsigned getFrameRegister(const MachineFunction &MF) const override;
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};
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}
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#endif
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