PPCRegisterInfo.h revision 5e6df4647e15c50daea9a8a4e7f4f417a266335c
121e463b2bf864671a87ebe386cb100ef9349a540Nate Begeman//===- PPCRegisterInfo.h - PowerPC Register Information Impl -----*- C++ -*-==// 2b5f662fa0314f7e7e690aae8ebff7136cc3a5ab0Misha Brukman// 3f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// The LLVM Compiler Infrastructure 4f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// 5f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// This file was developed by the LLVM research group and is distributed under 6f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// the University of Illinois Open Source License. See LICENSE.TXT for details. 7b5f662fa0314f7e7e690aae8ebff7136cc3a5ab0Misha Brukman// 8f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman//===----------------------------------------------------------------------===// 9f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// 10f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// This file contains the PowerPC implementation of the MRegisterInfo class. 11f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman// 12f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman//===----------------------------------------------------------------------===// 13f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 14f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman#ifndef POWERPC32_REGISTERINFO_H 15f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman#define POWERPC32_REGISTERINFO_H 16f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 172668959b8879097db368aec7d76c455260abc75bChris Lattner#include "PPC.h" 184c7b43b43fdf943c7298718e15ab5d6dfe345be7Chris Lattner#include "PPCGenRegisterInfo.h.inc" 19f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman#include <map> 20f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 21f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukmannamespace llvm { 22804e06704261f233111913a047ef7f7dec1b8725Chris Lattnerclass PPCSubtarget; 23c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Chengclass TargetInstrInfo; 24f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukmanclass Type; 25f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 2621e463b2bf864671a87ebe386cb100ef9349a540Nate Begemanclass PPCRegisterInfo : public PPCGenRegisterInfo { 27f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman std::map<unsigned, unsigned> ImmToIdxMap; 28804e06704261f233111913a047ef7f7dec1b8725Chris Lattner const PPCSubtarget &Subtarget; 297ce45783531cfa81bfd7be561ea7e4738e8c6ca8Evan Cheng const TargetInstrInfo &TII; 30f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukmanpublic: 317ce45783531cfa81bfd7be561ea7e4738e8c6ca8Evan Cheng PPCRegisterInfo(const PPCSubtarget &SubTarget, const TargetInstrInfo &tii); 32369503f8412bba4a0138074c97107c09cc4513e0Chris Lattner 33369503f8412bba4a0138074c97107c09cc4513e0Chris Lattner /// getRegisterNumbering - Given the enum value for some register, e.g. 34369503f8412bba4a0138074c97107c09cc4513e0Chris Lattner /// PPC::F14, return the number that it corresponds to (e.g. 14). 35369503f8412bba4a0138074c97107c09cc4513e0Chris Lattner static unsigned getRegisterNumbering(unsigned RegEnum); 36f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 37f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman /// Code Generation virtual methods... 38f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void storeRegToStackSlot(MachineBasicBlock &MBB, 39f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman MachineBasicBlock::iterator MBBI, 400ffb1a56ff8439604556afd09ee0774655d7197cChris Lattner unsigned SrcReg, int FrameIndex, 410ffb1a56ff8439604556afd09ee0774655d7197cChris Lattner const TargetRegisterClass *RC) const; 42f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 43f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void loadRegFromStackSlot(MachineBasicBlock &MBB, 44f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman MachineBasicBlock::iterator MBBI, 450ffb1a56ff8439604556afd09ee0774655d7197cChris Lattner unsigned DestReg, int FrameIndex, 460ffb1a56ff8439604556afd09ee0774655d7197cChris Lattner const TargetRegisterClass *RC) const; 47b5f662fa0314f7e7e690aae8ebff7136cc3a5ab0Misha Brukman 48f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, 49f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman unsigned DestReg, unsigned SrcReg, 50f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman const TargetRegisterClass *RC) const; 51f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 52f38df04c3a0c2aa766fa50b254d2d0fc743f8152Chris Lattner /// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into 53f38df04c3a0c2aa766fa50b254d2d0fc743f8152Chris Lattner /// copy instructions, turning them into load/store instructions. 54f38df04c3a0c2aa766fa50b254d2d0fc743f8152Chris Lattner virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum, 55f38df04c3a0c2aa766fa50b254d2d0fc743f8152Chris Lattner int FrameIndex) const; 56f38df04c3a0c2aa766fa50b254d2d0fc743f8152Chris Lattner 57c2b861da18c54a4252fecba866341e1513fa18ccEvan Cheng const unsigned *getCalleeSavedRegs() const; 580f3ac8d8d4ce23eb2ae6f9d850f389250874eea5Evan Cheng 59c2b861da18c54a4252fecba866341e1513fa18ccEvan Cheng const TargetRegisterClass* const* getCalleeSavedRegClasses() const; 600f3ac8d8d4ce23eb2ae6f9d850f389250874eea5Evan Cheng 61b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng BitVector getReservedRegs(const MachineFunction &MF) const; 62b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 6399403b6964aead64c1039a8f4007437ef96dfd88Evan Cheng /// targetHandlesStackFrameRounding - Returns true if the target is 6499403b6964aead64c1039a8f4007437ef96dfd88Evan Cheng /// responsible for rounding up the stack frame (probably at emitPrologue 6599403b6964aead64c1039a8f4007437ef96dfd88Evan Cheng /// time). 6699403b6964aead64c1039a8f4007437ef96dfd88Evan Cheng bool targetHandlesStackFrameRounding() const { return true; } 6799403b6964aead64c1039a8f4007437ef96dfd88Evan Cheng 68dc77540d9506dc151d79b94bae88bd841880ef37Evan Cheng bool hasFP(const MachineFunction &MF) const; 69dc77540d9506dc151d79b94bae88bd841880ef37Evan Cheng 70f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void eliminateCallFramePseudoInstr(MachineFunction &MF, 71f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman MachineBasicBlock &MBB, 72f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman MachineBasicBlock::iterator I) const; 73f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 7451fe9d9aa432cbde6497cad4ea5c8f0276c67b82Jim Laskey /// usesLR - Returns if the link registers (LR) has been used in the function. 7551fe9d9aa432cbde6497cad4ea5c8f0276c67b82Jim Laskey /// 7651fe9d9aa432cbde6497cad4ea5c8f0276c67b82Jim Laskey bool usesLR(MachineFunction &MF) const; 7751fe9d9aa432cbde6497cad4ea5c8f0276c67b82Jim Laskey 782f616bff7ef1e2e08d6d23c2a8b42ec2bfebb173Jim Laskey void lowerDynamicAlloc(MachineBasicBlock::iterator II) const; 795e6df4647e15c50daea9a8a4e7f4f417a266335cEvan Cheng void eliminateFrameIndex(MachineBasicBlock::iterator II, 805e6df4647e15c50daea9a8a4e7f4f417a266335cEvan Cheng RegScavenger *RS = NULL) const; 81f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 822f616bff7ef1e2e08d6d23c2a8b42ec2bfebb173Jim Laskey /// determineFrameLayout - Determine the size of the frame and maximum call 832f616bff7ef1e2e08d6d23c2a8b42ec2bfebb173Jim Laskey /// frame size. 842f616bff7ef1e2e08d6d23c2a8b42ec2bfebb173Jim Laskey void determineFrameLayout(MachineFunction &MF) const; 852f616bff7ef1e2e08d6d23c2a8b42ec2bfebb173Jim Laskey 86d313a9b1484c52e3f784de5064ce86bdbd9b26dcJim Laskey void processFunctionBeforeCalleeSavedScan(MachineFunction &MF) const; 87f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void emitPrologue(MachineFunction &MF) const; 88f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; 89f1d78e83356a412e525c30ac90dabf090a8cfc99Jim Laskey 90a99791886d5d4af2b900cd8cc1c9ed1677b6f0f4Jim Laskey // Debug information queries. 914188699f80c233a20b6ddc61570a8a8c1804cb85Jim Laskey unsigned getRARegister() const; 92a99791886d5d4af2b900cd8cc1c9ed1677b6f0f4Jim Laskey unsigned getFrameRegister(MachineFunction &MF) const; 935e73d5bd2e98afda12fa69a7ea83050c69be0d34Jim Laskey void getInitialFrameState(std::vector<MachineMove> &Moves) const; 9462819f31440fe1b1415473a89b8683b5b690d5faJim Laskey 9562819f31440fe1b1415473a89b8683b5b690d5faJim Laskey // Exception handling queries. 9662819f31440fe1b1415473a89b8683b5b690d5faJim Laskey unsigned getEHExceptionRegister() const; 9762819f31440fe1b1415473a89b8683b5b690d5faJim Laskey unsigned getEHHandlerRegister() const; 98f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman}; 99f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 100f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman} // end namespace llvm 101f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman 102f2ccb77ee9d8ab35866dae111fa36929689c7511Misha Brukman#endif 103