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b4b54153ad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146412 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//==- HexagonRegisterInfo.h - Hexagon 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 Hexagon implementation of the TargetRegisterInfo
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// class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef HexagonREGISTERINFO_H
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#define HexagonREGISTERINFO_H
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#include "llvm/Target/TargetRegisterInfo.h"
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#define GET_REGINFO_HEADER
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#include "HexagonGenRegisterInfo.inc"
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#include "llvm/MC/MachineLocation.h"
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//
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// We try not to hard code the reserved registers in our code,
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// so the following two macros were defined. However, there
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// are still a few places that R11 and R10 are hard wired.
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// See below. If, in the future, we decided to change the reserved
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// register. Don't forget changing the following places.
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//
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// 1. the "Defs" set of STriw_pred in HexagonInstrInfo.td
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// 2. the "Defs" set of LDri_pred in HexagonInstrInfo.td
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// 3. the definition of "IntRegs" in HexagonRegisterInfo.td
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// 4. the definition of "DoubleRegs" in HexagonRegisterInfo.td
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//
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#define HEXAGON_RESERVED_REG_1 Hexagon::R10
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#define HEXAGON_RESERVED_REG_2 Hexagon::R11
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namespace llvm {
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class HexagonSubtarget;
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class HexagonInstrInfo;
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class Type;
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struct HexagonRegisterInfo : public HexagonGenRegisterInfo {
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HexagonSubtarget &Subtarget;
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const HexagonInstrInfo &TII;
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HexagonRegisterInfo(HexagonSubtarget &st, const HexagonInstrInfo &tii);
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/// Code Generation virtual methods...
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const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
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const TargetRegisterClass* const* getCalleeSavedRegClasses(
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const MachineFunction *MF = 0) const;
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BitVector getReservedRegs(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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void eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, RegScavenger *RS = NULL) const;
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/// determineFrameLayout - Determine the size of the frame and maximum call
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/// frame size.
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void determineFrameLayout(MachineFunction &MF) const;
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/// requiresRegisterScavenging - returns true since we may need scavenging for
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/// a temporary register when generating hardware loop instructions.
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bool requiresRegisterScavenging(const MachineFunction &MF) const {
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return true;
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}
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// Debug information queries.
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unsigned getRARegister() const;
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unsigned getFrameRegister(const MachineFunction &MF) const;
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unsigned getFrameRegister() const;
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void getInitialFrameState(std::vector<MachineMove> &Moves) const;
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unsigned getStackRegister() const;
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// Exception handling queries.
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unsigned getEHExceptionRegister() const;
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unsigned getEHHandlerRegister() const;
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};
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} // end namespace llvm
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#endif
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