mirror of
https://github.com/c64scene-ar/llvm-6502.git
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fcb4a8ead3
to try to re-use scavenged frame index reference registers. rdar://8277890 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112241 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
//===- Thumb1RegisterInfo.h - Thumb-1 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 Thumb-1 implementation of the TargetRegisterInfo
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// class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef THUMB1REGISTERINFO_H
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#define THUMB1REGISTERINFO_H
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#include "ARM.h"
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#include "ARMRegisterInfo.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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namespace llvm {
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class ARMSubtarget;
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class ARMBaseInstrInfo;
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class Type;
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struct Thumb1RegisterInfo : public ARMBaseRegisterInfo {
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public:
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Thumb1RegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI);
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/// emitLoadConstPool - Emits a load from constpool to materialize the
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/// specified immediate.
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void emitLoadConstPool(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator &MBBI,
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DebugLoc dl,
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unsigned DestReg, unsigned SubIdx, int Val,
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ARMCC::CondCodes Pred = ARMCC::AL,
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unsigned PredReg = 0) const;
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/// Code Generation virtual methods...
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bool hasReservedCallFrame(const MachineFunction &MF) const;
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void eliminateCallFramePseudoInstr(MachineFunction &MF,
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const;
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// rewrite MI to access 'Offset' bytes from the FP. Update Offset to be
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// however much remains to be handled. Return 'true' if no further
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// work is required.
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bool rewriteFrameIndex(MachineBasicBlock::iterator II, unsigned FrameRegIdx,
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unsigned FrameReg, int &Offset,
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const ARMBaseInstrInfo &TII) const;
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void resolveFrameIndex(MachineBasicBlock::iterator I,
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unsigned BaseReg, int64_t Offset) const;
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bool saveScavengerRegister(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I,
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MachineBasicBlock::iterator &UseMI,
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const TargetRegisterClass *RC,
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unsigned Reg) const;
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void eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, RegScavenger *RS = NULL) const;
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void emitPrologue(MachineFunction &MF) const;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
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};
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}
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#endif // THUMB1REGISTERINFO_H
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