From adde6994ac8b29ae75ea9edad310c673dfbb96ec Mon Sep 17 00:00:00 2001 From: Misha Brukman Date: Tue, 17 Aug 2004 04:57:37 +0000 Subject: [PATCH] PowerPC 32-/64-bit split: Part II, 64-bit customizations on PowerPC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15851 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/PowerPC/PPC64.td | 43 +++ lib/Target/PowerPC/PPC64AsmPrinter.cpp | 1 - lib/Target/PowerPC/PPC64ISelSimple.cpp | 17 +- lib/Target/PowerPC/PPC64InstrInfo.cpp | 59 +++++ lib/Target/PowerPC/PPC64InstrInfo.h | 56 ++++ lib/Target/PowerPC/PPC64RegisterInfo.cpp | 317 +++++++++++++++++++++++ lib/Target/PowerPC/PPC64RegisterInfo.h | 56 ++++ lib/Target/PowerPC/PPC64RegisterInfo.td | 40 +++ lib/Target/PowerPC/PPC64TargetMachine.h | 30 ++- 9 files changed, 592 insertions(+), 27 deletions(-) create mode 100644 lib/Target/PowerPC/PPC64.td create mode 100644 lib/Target/PowerPC/PPC64InstrInfo.cpp create mode 100644 lib/Target/PowerPC/PPC64InstrInfo.h create mode 100644 lib/Target/PowerPC/PPC64RegisterInfo.cpp create mode 100644 lib/Target/PowerPC/PPC64RegisterInfo.h create mode 100644 lib/Target/PowerPC/PPC64RegisterInfo.td diff --git a/lib/Target/PowerPC/PPC64.td b/lib/Target/PowerPC/PPC64.td new file mode 100644 index 00000000000..af8ae021125 --- /dev/null +++ b/lib/Target/PowerPC/PPC64.td @@ -0,0 +1,43 @@ +//===- PPC64.td - Describe the PowerPC64 Target Machine ----*- tablegen -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// +//===----------------------------------------------------------------------===// + +// Get the target-independent interfaces which we are implementing... +// +include "../Target.td" + +//===----------------------------------------------------------------------===// +// Register File Description +//===----------------------------------------------------------------------===// + +include "PPC32RegisterInfo.td" +include "PowerPCInstrInfo.td" + +def PowerPCInstrInfo : InstrInfo { + let PHIInst = PHI; + + let TSFlagsFields = ["ArgCount", "Arg0Type", "Arg1Type", "Arg2Type", + "Arg3Type", "Arg4Type", "VMX", "PPC64"]; + let TSFlagsShifts = [ 0, 3, 8, 13, 18, 23, 28, 29 ]; +} + +def PPC64 : Target { + // Pointers on PPC64 are 64-bits in size. + let PointerType = i64; + + let CalleeSavedRegisters = [R1, R13, R14, R15, R16, R17, R18, R19, + R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, F14, F15, + F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, + F30, F31, CR2, CR3, CR4, LR]; + + // Pull in Instruction Info: + let InstructionSet = PowerPCInstrInfo; +} diff --git a/lib/Target/PowerPC/PPC64AsmPrinter.cpp b/lib/Target/PowerPC/PPC64AsmPrinter.cpp index d9dc91390be..d32f1982310 100644 --- a/lib/Target/PowerPC/PPC64AsmPrinter.cpp +++ b/lib/Target/PowerPC/PPC64AsmPrinter.cpp @@ -24,7 +24,6 @@ #include "llvm/CodeGen/MachineConstantPool.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineInstr.h" -#include "llvm/Target/TargetMachine.h" #include "llvm/Support/Mangler.h" #include "Support/CommandLine.h" #include "Support/Debug.h" diff --git a/lib/Target/PowerPC/PPC64ISelSimple.cpp b/lib/Target/PowerPC/PPC64ISelSimple.cpp index 5c47f06d5b3..64f8e5c006e 100644 --- a/lib/Target/PowerPC/PPC64ISelSimple.cpp +++ b/lib/Target/PowerPC/PPC64ISelSimple.cpp @@ -377,10 +377,10 @@ namespace { /// yet used. /// unsigned makeAnotherReg(const Type *Ty) { - assert(dynamic_cast(TM.getRegisterInfo()) && + assert(dynamic_cast(TM.getRegisterInfo()) && "Current target doesn't have PPC reg info??"); - const PowerPCRegisterInfo *PPCRI = - static_cast(TM.getRegisterInfo()); + const PPC64RegisterInfo *PPCRI = + static_cast(TM.getRegisterInfo()); // Add the mapping of regnumber => reg class to MachineFunction const TargetRegisterClass *RC = PPCRI->getRegClassForType(Ty); return F->getSSARegMap()->createVirtualRegister(RC); @@ -1288,7 +1288,7 @@ void ISel::visitBranchInst(BranchInst &BI) { } else { // Change to the inverse condition... if (BI.getSuccessor(1) != NextBB) { - Opcode = PowerPCInstrInfo::invertPPCBranchOpcode(Opcode); + Opcode = PPC64InstrInfo::invertPPCBranchOpcode(Opcode); BuildMI(BB, PPC::COND_BRANCH, 3).addReg(PPC::CR0).addImm(Opcode) .addMBB(MBBMap[BI.getSuccessor(1)]) .addMBB(MBBMap[BI.getSuccessor(0)]); @@ -1497,8 +1497,6 @@ void ISel::visitCallInst(CallInst &CI) { } // Emit a CALL instruction with PC-relative displacement. TheCall = BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(F, true); - // Add it to the set of functions called to be used by the Printer - TM.CalledFunctions.insert(F); } else { // Emit an indirect call through the CTR unsigned Reg = getReg(CI.getCalledValue()); BuildMI(BB, PPC::MTCTR, 1).addReg(Reg); @@ -1997,7 +1995,6 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB, Args.push_back(ValueRecord(Op0Reg, Type::FloatTy)); Args.push_back(ValueRecord(Op1Reg, Type::FloatTy)); doCall(ValueRecord(ResultReg, Type::FloatTy), TheCall, Args, false); - TM.CalledFunctions.insert(fmodfFn); } return; case cFP64: @@ -2015,7 +2012,6 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB, Args.push_back(ValueRecord(Op0Reg, Type::DoubleTy)); Args.push_back(ValueRecord(Op1Reg, Type::DoubleTy)); doCall(ValueRecord(ResultReg, Type::DoubleTy), TheCall, Args, false); - TM.CalledFunctions.insert(fmodFn); } return; case cLong: { @@ -2031,7 +2027,6 @@ void ISel::emitDivRemOperation(MachineBasicBlock *BB, Args.push_back(ValueRecord(Op0Reg, Type::LongTy)); Args.push_back(ValueRecord(Op1Reg, Type::LongTy)); doCall(ValueRecord(ResultReg, Type::LongTy), TheCall, Args, false); - TM.CalledFunctions.insert(Funcs[NameIdx]); return; } case cByte: case cShort: case cInt: @@ -2401,7 +2396,6 @@ void ISel::emitCastOperation(MachineBasicBlock *MBB, MachineInstr *TheCall = BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(floatFn, true); doCall(ValueRecord(DestReg, DestTy), TheCall, Args, false); - TM.CalledFunctions.insert(floatFn); return; } @@ -2473,7 +2467,6 @@ void ISel::emitCastOperation(MachineBasicBlock *MBB, MachineInstr *TheCall = BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(floatFn, true); doCall(ValueRecord(DestReg, DestTy), TheCall, Args, false); - TM.CalledFunctions.insert(floatFn); return; } @@ -3041,7 +3034,6 @@ void ISel::visitMallocInst(MallocInst &I) { MachineInstr *TheCall = BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(mallocFn, true); doCall(ValueRecord(getReg(I), I.getType()), TheCall, Args, false); - TM.CalledFunctions.insert(mallocFn); } @@ -3054,7 +3046,6 @@ void ISel::visitFreeInst(FreeInst &I) { MachineInstr *TheCall = BuildMI(PPC::CALLpcrel, 1).addGlobalAddress(freeFn, true); doCall(ValueRecord(0, Type::VoidTy), TheCall, Args, false); - TM.CalledFunctions.insert(freeFn); } /// createPPC64ISelSimple - This pass converts an LLVM function into a machine diff --git a/lib/Target/PowerPC/PPC64InstrInfo.cpp b/lib/Target/PowerPC/PPC64InstrInfo.cpp new file mode 100644 index 00000000000..3a68ad66d07 --- /dev/null +++ b/lib/Target/PowerPC/PPC64InstrInfo.cpp @@ -0,0 +1,59 @@ +//===- PPC64InstrInfo.cpp - PowerPC64 Instruction Information ---*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the PowerPC implementation of the TargetInstrInfo class. +// +//===----------------------------------------------------------------------===// + +#include "PowerPC.h" +#include "PPC64InstrInfo.h" +#include "PPC64GenInstrInfo.inc" +#include "llvm/CodeGen/MachineInstrBuilder.h" +#include +using namespace llvm; + +PPC64InstrInfo::PPC64InstrInfo() + : TargetInstrInfo(PPC64Insts, sizeof(PPC64Insts)/sizeof(PPC64Insts[0])) { } + +bool PPC64InstrInfo::isMoveInstr(const MachineInstr& MI, + unsigned& sourceReg, + unsigned& destReg) const { + MachineOpCode oc = MI.getOpcode(); + if (oc == PPC::OR) { // or r1, r2, r2 + assert(MI.getNumOperands() == 3 && + MI.getOperand(0).isRegister() && + MI.getOperand(1).isRegister() && + MI.getOperand(2).isRegister() && + "invalid PPC OR instruction!"); + if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) { + sourceReg = MI.getOperand(1).getReg(); + destReg = MI.getOperand(0).getReg(); + return true; + } + } else if (oc == PPC::ADDI) { // addi r1, r2, 0 + assert(MI.getNumOperands() == 3 && + MI.getOperand(0).isRegister() && + MI.getOperand(2).isImmediate() && + "invalid PPC ADDI instruction!"); + if (MI.getOperand(1).isRegister() && MI.getOperand(2).getImmedValue()==0) { + sourceReg = MI.getOperand(1).getReg(); + destReg = MI.getOperand(0).getReg(); + return true; + } + } else if (oc == PPC::FMR) { // fmr r1, r2 + assert(MI.getNumOperands() == 2 && + MI.getOperand(0).isRegister() && + MI.getOperand(1).isRegister() && + "invalid PPC FMR instruction"); + sourceReg = MI.getOperand(1).getReg(); + destReg = MI.getOperand(0).getReg(); + return true; + } + return false; +} diff --git a/lib/Target/PowerPC/PPC64InstrInfo.h b/lib/Target/PowerPC/PPC64InstrInfo.h new file mode 100644 index 00000000000..ad05a540a86 --- /dev/null +++ b/lib/Target/PowerPC/PPC64InstrInfo.h @@ -0,0 +1,56 @@ +//===- PPC64InstrInfo.h - PowerPC64 Instruction Information -----*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the PowerPC64 implementation of the TargetInstrInfo class. +// +//===----------------------------------------------------------------------===// + +#ifndef POWERPC64_INSTRUCTIONINFO_H +#define POWERPC64_INSTRUCTIONINFO_H + +#include "PowerPCInstrInfo.h" +#include "PPC64RegisterInfo.h" + +namespace llvm { + +class PPC64InstrInfo : public TargetInstrInfo { + const PPC64RegisterInfo RI; +public: + PPC64InstrInfo(); + + /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As + /// such, whenever a client has an instance of instruction info, it should + /// always be able to get register info as well (through this method). + /// + virtual const MRegisterInfo &getRegisterInfo() const { return RI; } + + // + // Return true if the instruction is a register to register move and + // leave the source and dest operands in the passed parameters. + // + virtual bool isMoveInstr(const MachineInstr& MI, + unsigned& sourceReg, + unsigned& destReg) const; + + static unsigned invertPPCBranchOpcode(unsigned Opcode) { + switch (Opcode) { + default: assert(0 && "Unknown PPC branch opcode!"); + case PPC::BEQ: return PPC::BNE; + case PPC::BNE: return PPC::BEQ; + case PPC::BLT: return PPC::BGE; + case PPC::BGE: return PPC::BLT; + case PPC::BGT: return PPC::BLE; + case PPC::BLE: return PPC::BGT; + } + } +}; + +} + +#endif diff --git a/lib/Target/PowerPC/PPC64RegisterInfo.cpp b/lib/Target/PowerPC/PPC64RegisterInfo.cpp new file mode 100644 index 00000000000..e30613041d6 --- /dev/null +++ b/lib/Target/PowerPC/PPC64RegisterInfo.cpp @@ -0,0 +1,317 @@ +//===- PPC64RegisterInfo.cpp - PowerPC64 Register Information ---*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the PowerPC64 implementation of the MRegisterInfo class. +// +//===----------------------------------------------------------------------===// + +#define DEBUG_TYPE "reginfo" +#include "PowerPC.h" +#include "PowerPCInstrBuilder.h" +#include "PPC64RegisterInfo.h" +#include "llvm/Constants.h" +#include "llvm/Type.h" +#include "llvm/CodeGen/ValueTypes.h" +#include "llvm/CodeGen/MachineInstrBuilder.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/Target/TargetFrameInfo.h" +#include "llvm/Target/TargetMachine.h" +#include "llvm/Target/TargetOptions.h" +#include "Support/CommandLine.h" +#include "Support/Debug.h" +#include "Support/STLExtras.h" +#include +#include +using namespace llvm; + +namespace llvm { + // Switch toggling compilation for AIX + extern cl::opt AIX; +} + +PPC64RegisterInfo::PPC64RegisterInfo() + : PPC64GenRegisterInfo(PPC::ADJCALLSTACKDOWN, PPC::ADJCALLSTACKUP) { + ImmToIdxMap[PPC::LD] = PPC::LDX; ImmToIdxMap[PPC::STD] = PPC::STDX; + ImmToIdxMap[PPC::LBZ] = PPC::LBZX; ImmToIdxMap[PPC::STB] = PPC::STBX; + ImmToIdxMap[PPC::LHZ] = PPC::LHZX; ImmToIdxMap[PPC::LHA] = PPC::LHAX; + ImmToIdxMap[PPC::LWZ] = PPC::LWZX; ImmToIdxMap[PPC::LWA] = PPC::LWAX; + ImmToIdxMap[PPC::LFS] = PPC::LFSX; ImmToIdxMap[PPC::LFD] = PPC::LFDX; + ImmToIdxMap[PPC::STH] = PPC::STHX; ImmToIdxMap[PPC::STW] = PPC::STWX; + ImmToIdxMap[PPC::STFS] = PPC::STFSX; ImmToIdxMap[PPC::STFD] = PPC::STFDX; + ImmToIdxMap[PPC::ADDI] = PPC::ADD; +} + +static unsigned getIdx(const TargetRegisterClass *RC) { + if (RC == PPC64::GPRCRegisterClass) { + switch (RC->getSize()) { + default: assert(0 && "Invalid data size!"); + case 1: return 0; + case 2: return 1; + case 4: return 2; + case 8: return 3; + } + } else if (RC == PPC64::FPRCRegisterClass) { + switch (RC->getSize()) { + default: assert(0 && "Invalid data size!"); + case 4: return 4; + case 8: return 5; + } + } + std::cerr << "Invalid register class to getIdx()!\n"; + abort(); +} + +void +PPC64RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned SrcReg, int FrameIdx) const { + const TargetRegisterClass *RC = getRegClass(SrcReg); + static const unsigned Opcode[] = { + PPC::STB, PPC::STH, PPC::STW, PPC::STD, PPC::STFS, PPC::STFD + }; + + unsigned OC = Opcode[getIdx(RC)]; + if (SrcReg == PPC::LR) { + BuildMI(MBB, MI, PPC::MFLR, 0, PPC::R11); + BuildMI(MBB, MI, PPC::IMPLICIT_DEF, 0, PPC::R0); + addFrameReference(BuildMI(MBB, MI, OC, 3).addReg(PPC::R11),FrameIdx); + } else { + BuildMI(MBB, MI, PPC::IMPLICIT_DEF, 0, PPC::R0); + addFrameReference(BuildMI(MBB, MI, OC, 3).addReg(SrcReg),FrameIdx); + } +} + +void +PPC64RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned DestReg, int FrameIdx) const{ + static const unsigned Opcode[] = { + PPC::LBZ, PPC::LHZ, PPC::LWZ, PPC::LD, PPC::LFS, PPC::LFD + }; + const TargetRegisterClass *RC = getRegClass(DestReg); + unsigned OC = Opcode[getIdx(RC)]; + if (DestReg == PPC::LR) { + BuildMI(MBB, MI, PPC::IMPLICIT_DEF, 0, PPC::R0); + addFrameReference(BuildMI(MBB, MI, OC, 2, PPC::R11), FrameIdx); + BuildMI(MBB, MI, PPC::MTLR, 1).addReg(PPC::R11); + } else { + BuildMI(MBB, MI, PPC::IMPLICIT_DEF, 0, PPC::R0); + addFrameReference(BuildMI(MBB, MI, OC, 2, DestReg), FrameIdx); + } +} + +void PPC64RegisterInfo::copyRegToReg(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned DestReg, unsigned SrcReg, + const TargetRegisterClass *RC) const { + MachineInstr *I; + + if (RC == PPC64::GPRCRegisterClass) { + BuildMI(MBB, MI, PPC::OR, 2, DestReg).addReg(SrcReg).addReg(SrcReg); + } else if (RC == PPC64::FPRCRegisterClass) { + BuildMI(MBB, MI, PPC::FMR, 1, DestReg).addReg(SrcReg); + } else { + std::cerr << "Attempt to copy register that is not GPR or FPR"; + abort(); + } +} + +//===----------------------------------------------------------------------===// +// Stack Frame Processing methods +//===----------------------------------------------------------------------===// + +// hasFP - Return true if the specified function should have a dedicated frame +// pointer register. This is true if the function has variable sized allocas or +// if frame pointer elimination is disabled. +// +static bool hasFP(MachineFunction &MF) { + MachineFrameInfo *MFI = MF.getFrameInfo(); + return MFI->hasVarSizedObjects(); +} + +void PPC64RegisterInfo:: +eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, + MachineBasicBlock::iterator I) const { + if (hasFP(MF)) { + // If we have a frame pointer, convert as follows: + // ADJCALLSTACKDOWN -> addi, r1, r1, -amount + // ADJCALLSTACKUP -> addi, r1, r1, amount + MachineInstr *Old = I; + unsigned Amount = Old->getOperand(0).getImmedValue(); + if (Amount != 0) { + // We need to keep the stack aligned properly. To do this, we round the + // amount of space needed for the outgoing arguments up to the next + // alignment boundary. + unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment(); + Amount = (Amount+Align-1)/Align*Align; + + // Replace the pseudo instruction with a new instruction... + if (Old->getOpcode() == PPC::ADJCALLSTACKDOWN) { + MBB.insert(I, BuildMI(PPC::ADDI, 2, PPC::R1).addReg(PPC::R1) + .addSImm(-Amount)); + } else { + assert(Old->getOpcode() == PPC::ADJCALLSTACKUP); + MBB.insert(I, BuildMI(PPC::ADDI, 2, PPC::R1).addReg(PPC::R1) + .addSImm(Amount)); + } + } + } + MBB.erase(I); +} + +void +PPC64RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II) const { + unsigned i = 0; + MachineInstr &MI = *II; + MachineBasicBlock &MBB = *MI.getParent(); + MachineFunction &MF = *MBB.getParent(); + + while (!MI.getOperand(i).isFrameIndex()) { + ++i; + assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!"); + } + + int FrameIndex = MI.getOperand(i).getFrameIndex(); + + // Replace the FrameIndex with base register with GPR1 (SP) or GPR31 (FP). + MI.SetMachineOperandReg(i, hasFP(MF) ? PPC::R31 : PPC::R1); + + // Take into account whether it's an add or mem instruction + unsigned OffIdx = (i == 2) ? 1 : 2; + + // Now add the frame object offset to the offset from r1. + int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) + + MI.getOperand(OffIdx).getImmedValue(); + + // If we're not using a Frame Pointer that has been set to the value of the + // SP before having the stack size subtracted from it, then add the stack size + // to Offset to get the correct offset. + Offset += MF.getFrameInfo()->getStackSize(); + + if (Offset > 32767 || Offset < -32768) { + // Insert a set of r0 with the full offset value before the ld, st, or add + MachineBasicBlock *MBB = MI.getParent(); + MBB->insert(II, BuildMI(PPC::LIS, 1, PPC::R0).addSImm(Offset >> 16)); + MBB->insert(II, BuildMI(PPC::ORI, 2, PPC::R0).addReg(PPC::R0) + .addImm(Offset)); + // convert into indexed form of the instruction + // sth 0:rA, 1:imm 2:(rB) ==> sthx 0:rA, 2:rB, 1:r0 + // addi 0:rA 1:rB, 2, imm ==> add 0:rA, 1:rB, 2:r0 + unsigned NewOpcode = const_cast& >(ImmToIdxMap)[MI.getOpcode()]; + assert(NewOpcode && "No indexed form of load or store available!"); + MI.setOpcode(NewOpcode); + MI.SetMachineOperandReg(1, MI.getOperand(i).getReg()); + MI.SetMachineOperandReg(2, PPC::R0); + } else { + MI.SetMachineOperandConst(OffIdx,MachineOperand::MO_SignExtendedImmed,Offset); + } +} + + +void PPC64RegisterInfo::emitPrologue(MachineFunction &MF) const { + MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB + MachineBasicBlock::iterator MBBI = MBB.begin(); + MachineFrameInfo *MFI = MF.getFrameInfo(); + MachineInstr *MI; + + // Get the number of bytes to allocate from the FrameInfo + unsigned NumBytes = MFI->getStackSize(); + + // If we have calls, we cannot use the red zone to store callee save registers + // and we must set up a stack frame, so calculate the necessary size here. + if (MFI->hasCalls()) { + // We reserve argument space for call sites in the function immediately on + // entry to the current function. This eliminates the need for add/sub + // brackets around call sites. + NumBytes += MFI->getMaxCallFrameSize(); + } + + // Do we need to allocate space on the stack? + if (NumBytes == 0) return; + + // Add the size of R1 to NumBytes size for the store of R1 to the bottom + // of the stack and round the size to a multiple of the alignment. + unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment(); + unsigned R1Size = getRegClass(PPC::R1)->getSize(); + unsigned R31Size = getRegClass(PPC::R31)->getSize(); + unsigned Size = (hasFP(MF)) ? R1Size + R31Size : R1Size; + NumBytes = (NumBytes+Size+Align-1)/Align*Align; + + // Update frame info to pretend that this is part of the stack... + MFI->setStackSize(NumBytes); + + // adjust stack pointer: r1 -= numbytes + if (NumBytes <= 32768) { + MI=BuildMI(PPC::STDU,3).addReg(PPC::R1).addSImm(-NumBytes).addReg(PPC::R1); + MBB.insert(MBBI, MI); + } else { + int NegNumbytes = -NumBytes; + MI = BuildMI(PPC::LIS, 1, PPC::R0).addSImm(NegNumbytes >> 16); + MBB.insert(MBBI, MI); + MI = BuildMI(PPC::ORI, 2, PPC::R0).addReg(PPC::R0) + .addImm(NegNumbytes & 0xFFFF); + MBB.insert(MBBI, MI); + MI = BuildMI(PPC::STDUX, 3).addReg(PPC::R1).addReg(PPC::R1).addReg(PPC::R0); + MBB.insert(MBBI, MI); + } + + if (hasFP(MF)) { + MI = BuildMI(PPC::STD, 3).addReg(PPC::R31).addSImm(R1Size).addReg(PPC::R1); + MBB.insert(MBBI, MI); + MI = BuildMI(PPC::OR, 2, PPC::R31).addReg(PPC::R1).addReg(PPC::R1); + MBB.insert(MBBI, MI); + } +} + +void PPC64RegisterInfo::emitEpilogue(MachineFunction &MF, + MachineBasicBlock &MBB) const { + const MachineFrameInfo *MFI = MF.getFrameInfo(); + MachineBasicBlock::iterator MBBI = prior(MBB.end()); + MachineInstr *MI; + assert(MBBI->getOpcode() == PPC::BLR && + "Can only insert epilog into returning blocks"); + + // Get the number of bytes allocated from the FrameInfo... + unsigned NumBytes = MFI->getStackSize(); + + if (NumBytes != 0) { + if (hasFP(MF)) { + MI = BuildMI(PPC::OR, 2, PPC::R1).addReg(PPC::R31).addReg(PPC::R31); + MBB.insert(MBBI, MI); + MI = BuildMI(PPC::LD, 2, PPC::R31).addSImm(4).addReg(PPC::R31); + MBB.insert(MBBI, MI); + } + MI = BuildMI(PPC::LD, 2, PPC::R1).addSImm(0).addReg(PPC::R1); + MBB.insert(MBBI, MI); + } +} + +#include "PPC64GenRegisterInfo.inc" + +const TargetRegisterClass* +PPC64RegisterInfo::getRegClassForType(const Type* Ty) const { + switch (Ty->getTypeID()) { + default: assert(0 && "Invalid type to getClass!"); + case Type::BoolTyID: + case Type::SByteTyID: + case Type::UByteTyID: + case Type::ShortTyID: + case Type::UShortTyID: + case Type::IntTyID: + case Type::UIntTyID: + case Type::PointerTyID: + case Type::LongTyID: + case Type::ULongTyID: return &GPRCInstance; + + case Type::FloatTyID: + case Type::DoubleTyID: return &FPRCInstance; + } +} + diff --git a/lib/Target/PowerPC/PPC64RegisterInfo.h b/lib/Target/PowerPC/PPC64RegisterInfo.h new file mode 100644 index 00000000000..31fd0e6559c --- /dev/null +++ b/lib/Target/PowerPC/PPC64RegisterInfo.h @@ -0,0 +1,56 @@ +//===- PPC64RegisterInfo.h - PowerPC64 Register Information Impl -*- C++ -*-==// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the PowerPC implementation of the MRegisterInfo class. +// +//===----------------------------------------------------------------------===// + +#ifndef POWERPC64_REGISTERINFO_H +#define POWERPC64_REGISTERINFO_H + +#include "PowerPC.h" +#include "PPC64GenRegisterInfo.h.inc" +#include + +namespace llvm { + +class Type; + +class PPC64RegisterInfo : public PPC64GenRegisterInfo { + std::map ImmToIdxMap; +public: + PPC64RegisterInfo(); + const TargetRegisterClass* getRegClassForType(const Type* Ty) const; + + /// Code Generation virtual methods... + void storeRegToStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned SrcReg, int FrameIndex) const; + + void loadRegFromStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned DestReg, int FrameIndex) const; + + void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, + unsigned DestReg, unsigned SrcReg, + const TargetRegisterClass *RC) const; + + void eliminateCallFramePseudoInstr(MachineFunction &MF, + MachineBasicBlock &MBB, + MachineBasicBlock::iterator I) const; + + void eliminateFrameIndex(MachineBasicBlock::iterator II) const; + + void emitPrologue(MachineFunction &MF) const; + void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; +}; + +} // end namespace llvm + +#endif diff --git a/lib/Target/PowerPC/PPC64RegisterInfo.td b/lib/Target/PowerPC/PPC64RegisterInfo.td new file mode 100644 index 00000000000..f39ef1cbff5 --- /dev/null +++ b/lib/Target/PowerPC/PPC64RegisterInfo.td @@ -0,0 +1,40 @@ +//===- PPC64RegisterInfo.td - The PowerPC64 Register File --*- tablegen -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// +//===----------------------------------------------------------------------===// + +include "PowerPCRegisterInfo.td" + +/// Register classes +// Allocate volatiles first +// then nonvolatiles in reverse order since stmw/lmw save from rN to r31 +def GPRC : RegisterClass +{ + let Methods = [{ + iterator allocation_order_begin(MachineFunction &MF) const { + return begin() + (AIX ? 1 : 0); + } + iterator allocation_order_end(MachineFunction &MF) const { + if (hasFP(MF)) + return end()-4; + else + return end()-3; + } + }]; +} + +def FPRC : RegisterClass; + +def CRRC : RegisterClass; diff --git a/lib/Target/PowerPC/PPC64TargetMachine.h b/lib/Target/PowerPC/PPC64TargetMachine.h index dc2c1a4c677..587d1552f75 100644 --- a/lib/Target/PowerPC/PPC64TargetMachine.h +++ b/lib/Target/PowerPC/PPC64TargetMachine.h @@ -1,4 +1,4 @@ -//===-- PPC64TargetMachine.h - Define AIX/PowerPC TargetMachine --*- C++ -*-=// +//===-- PPC64TargetMachine.h - Define TargetMachine for PowerPC64 -*- C++ -*-=// // // The LLVM Compiler Infrastructure // @@ -7,31 +7,35 @@ // //===----------------------------------------------------------------------===// // -// This file declares the PowerPC/AIX specific subclass of TargetMachine. +// This file declares the PowerPC specific subclass of TargetMachine. // //===----------------------------------------------------------------------===// -#ifndef POWERPC_AIX_TARGETMACHINE_H -#define POWERPC_AIX_TARGETMACHINE_H +#ifndef POWERPC64_TARGETMACHINE_H +#define POWERPC64_TARGETMACHINE_H #include "PowerPCTargetMachine.h" +#include "PPC64InstrInfo.h" +#include "llvm/PassManager.h" namespace llvm { +class IntrinsicLowering; + class PPC64TargetMachine : public PowerPCTargetMachine { + PPC64InstrInfo InstrInfo; + public: PPC64TargetMachine(const Module &M, IntrinsicLowering *IL); + virtual const PPC64InstrInfo *getInstrInfo() const { return &InstrInfo; } + virtual const MRegisterInfo *getRegisterInfo() const { + return &InstrInfo.getRegisterInfo(); + } - /// addPassesToEmitMachineCode - Add passes to the specified pass manager to - /// get machine code emitted. This uses a MachineCodeEmitter object to handle - /// actually outputting the machine code and resolving things like the address - /// of functions. This method should returns true if machine code emission is - /// not supported. - /// - virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM, - MachineCodeEmitter &MCE); - static unsigned getModuleMatchQuality(const Module &M); + + bool addPassesToEmitMachineCode(FunctionPassManager &PM, + MachineCodeEmitter &MCE); }; } // end namespace llvm