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annotate lib/Target/Mips/MipsFrameLowering.h @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
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1 //===-- MipsFrameLowering.h - Define frame lowering for Mips ----*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 //
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11 //
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12 //===----------------------------------------------------------------------===//
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14 #ifndef LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
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15 #define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
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16
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17 #include "Mips.h"
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18 #include "llvm/Target/TargetFrameLowering.h"
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19
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20 namespace llvm {
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21 class MipsSubtarget;
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22
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23 class MipsFrameLowering : public TargetFrameLowering {
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24 protected:
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25 const MipsSubtarget &STI;
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26
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27 public:
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28 explicit MipsFrameLowering(const MipsSubtarget &sti, unsigned Alignment)
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29 : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) {}
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31 static const MipsFrameLowering *create(const MipsSubtarget &ST);
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33 bool hasFP(const MachineFunction &MF) const override;
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35 bool hasBP(const MachineFunction &MF) const;
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36
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37 bool isFPCloseToIncomingSP() const override { return false; }
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38
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39 void
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40 eliminateCallFramePseudoInstr(MachineFunction &MF,
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41 MachineBasicBlock &MBB,
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42 MachineBasicBlock::iterator I) const override;
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43
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44 protected:
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45 uint64_t estimateStackSize(const MachineFunction &MF) const;
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46 };
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47
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48 /// Create MipsFrameLowering objects.
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49 const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST);
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50 const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST);
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51
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52 } // End llvm namespace
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53
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54 #endif