Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 471 deletions

diff --git a/gnu/llvm/lib/Target/ARC/ARCFrameLowering.cpp b/gnu/llvm/lib/Target/ARC/ARCFrameLowering.cpp
deleted file mode 100644
index ca59cb2baaa..00000000000
--- a/gnu/llvm/lib/Target/ARC/ARCFrameLowering.cpp
+++ /dev/null
@@ -1,471 +0,0 @@
-//===- ARCFrameLowering.cpp - ARC Frame Information -------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains the ARC implementation of the TargetFrameLowering class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "ARCFrameLowering.h"
-#include "ARCMachineFunctionInfo.h"
-#include "ARCSubtarget.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/RegisterScavenging.h"
-#include "llvm/CodeGen/TargetRegisterInfo.h"
-#include "llvm/IR/Function.h"
-#include "llvm/Support/Debug.h"
-
-#define DEBUG_TYPE "arc-frame-lowering"
-
-using namespace llvm;
-
-static cl::opt<bool>
-    UseSaveRestoreFunclet("arc-save-restore-funclet", cl::Hidden,
-                          cl::desc("Use arc callee save/restore functions"),
-                          cl::init(true));
-
-static const char *store_funclet_name[] = {
-    "__st_r13_to_r15", "__st_r13_to_r16", "__st_r13_to_r17", "__st_r13_to_r18",
-    "__st_r13_to_r19", "__st_r13_to_r20", "__st_r13_to_r21", "__st_r13_to_r22",
-    "__st_r13_to_r23", "__st_r13_to_r24", "__st_r13_to_r25",
-};
-
-static const char *load_funclet_name[] = {
-    "__ld_r13_to_r15", "__ld_r13_to_r16", "__ld_r13_to_r17", "__ld_r13_to_r18",
-    "__ld_r13_to_r19", "__ld_r13_to_r20", "__ld_r13_to_r21", "__ld_r13_to_r22",
-    "__ld_r13_to_r23", "__ld_r13_to_r24", "__ld_r13_to_r25",
-};
-
-static void generateStackAdjustment(MachineBasicBlock &MBB,
-                                    MachineBasicBlock::iterator MBBI,
-                                    const ARCInstrInfo &TII, DebugLoc dl,
-                                    int Amount, int StackPtr) {
-  unsigned AdjOp;
-  if (!Amount)
-    return;
-  bool Positive;
-  unsigned AbsAmount;
-  if (Amount < 0) {
-    AbsAmount = -Amount;
-    Positive = false;
-  } else {
-    AbsAmount = Amount;
-    Positive = true;
-  }
-
-  LLVM_DEBUG(dbgs() << "Internal: adjust stack by: " << Amount << ","
-                    << AbsAmount << "\n");
-
-  assert((AbsAmount % 4 == 0) && "Stack adjustments must be 4-byte aligned.");
-  if (isUInt<6>(AbsAmount))
-    AdjOp = Positive ? ARC::ADD_rru6 : ARC::SUB_rru6;
-  else
-    AdjOp = Positive ? ARC::ADD_rrlimm : ARC::SUB_rrlimm;
-
-  BuildMI(MBB, MBBI, dl, TII.get(AdjOp), StackPtr)
-      .addReg(StackPtr)
-      .addImm(AbsAmount);
-}
-
-static unsigned
-determineLastCalleeSave(const std::vector<CalleeSavedInfo> &CSI) {
-  unsigned Last = 0;
-  for (auto Reg : CSI) {
-    assert(Reg.getReg() >= ARC::R13 && Reg.getReg() <= ARC::R25 &&
-           "Unexpected callee saved reg.");
-    if (Reg.getReg() > Last)
-      Last = Reg.getReg();
-  }
-  return Last;
-}
-
-void ARCFrameLowering::determineCalleeSaves(MachineFunction &MF,
-                                            BitVector &SavedRegs,
-                                            RegScavenger *RS) const {
-  LLVM_DEBUG(dbgs() << "Determine Callee Saves: " << MF.getName() << "\n");
-  TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS);
-  SavedRegs.set(ARC::BLINK);
-}
-
-void ARCFrameLowering::adjustStackToMatchRecords(
-    MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
-    bool Allocate) const {
-  MachineFunction &MF = *MBB.getParent();
-  int ScalarAlloc = MF.getFrameInfo().getStackSize();
-
-  if (Allocate) {
-    // Allocate by adjusting by the negative of what the record holder tracked
-    // it tracked a positive offset in a downward growing stack.
-    ScalarAlloc = -ScalarAlloc;
-  }
-
-  generateStackAdjustment(MBB, MBBI, *ST.getInstrInfo(), DebugLoc(),
-                          ScalarAlloc, ARC::SP);
-}
-
-/// Insert prolog code into the function.
-/// For ARC, this inserts a call to a function that puts required callee saved
-/// registers onto the stack, when enough callee saved registers are required.
-void ARCFrameLowering::emitPrologue(MachineFunction &MF,
-                                    MachineBasicBlock &MBB) const {
-  LLVM_DEBUG(dbgs() << "Emit Prologue: " << MF.getName() << "\n");
-  auto *AFI = MF.getInfo<ARCFunctionInfo>();
-  MachineModuleInfo &MMI = MF.getMMI();
-  MCContext &Context = MMI.getContext();
-  const MCRegisterInfo *MRI = Context.getRegisterInfo();
-  const ARCInstrInfo *TII = MF.getSubtarget<ARCSubtarget>().getInstrInfo();
-  MachineBasicBlock::iterator MBBI = MBB.begin();
-  // Debug location must be unknown since the first debug location is used
-  // to determine the end of the prologue.
-  DebugLoc dl;
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  const std::vector<CalleeSavedInfo> &CSI = MFI.getCalleeSavedInfo();
-  unsigned Last = determineLastCalleeSave(CSI);
-  unsigned StackSlotsUsedByFunclet = 0;
-  bool SavedBlink = false;
-  unsigned AlreadyAdjusted = 0;
-  if (MF.getFunction().isVarArg()) {
-    // Add in the varargs area here first.
-    LLVM_DEBUG(dbgs() << "Varargs\n");
-    unsigned VarArgsBytes = MFI.getObjectSize(AFI->getVarArgsFrameIndex());
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::SUB_rru6))
-        .addReg(ARC::SP)
-        .addReg(ARC::SP)
-        .addImm(VarArgsBytes);
-  }
-  if (hasFP(MF)) {
-    LLVM_DEBUG(dbgs() << "Saving FP\n");
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::ST_AW_rs9))
-        .addReg(ARC::SP, RegState::Define)
-        .addReg(ARC::FP)
-        .addReg(ARC::SP)
-        .addImm(-4);
-    AlreadyAdjusted += 4;
-  }
-  if (UseSaveRestoreFunclet && Last > ARC::R14) {
-    LLVM_DEBUG(dbgs() << "Creating store funclet.\n");
-    // BL to __save_r13_to_<TRI->getRegAsmName()>
-    StackSlotsUsedByFunclet = Last - ARC::R12;
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::PUSH_S_BLINK));
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::SUB_rru6))
-        .addReg(ARC::SP)
-        .addReg(ARC::SP)
-        .addImm(4 * StackSlotsUsedByFunclet);
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::BL))
-        .addExternalSymbol(store_funclet_name[Last - ARC::R15])
-        .addReg(ARC::BLINK, RegState::Implicit | RegState::Kill);
-    AlreadyAdjusted += 4 * (StackSlotsUsedByFunclet + 1);
-    SavedBlink = true;
-  }
-  // If we haven't saved BLINK, but we need to...do that now.
-  if (MFI.hasCalls() && !SavedBlink) {
-    LLVM_DEBUG(dbgs() << "Creating save blink.\n");
-    BuildMI(MBB, MBBI, dl, TII->get(ARC::PUSH_S_BLINK));
-    AlreadyAdjusted += 4;
-  }
-  if (AFI->MaxCallStackReq > 0)
-    MFI.setStackSize(MFI.getStackSize() + AFI->MaxCallStackReq);
-  // We have already saved some of the stack...
-  LLVM_DEBUG(dbgs() << "Adjusting stack by: "
-                    << (MFI.getStackSize() - AlreadyAdjusted) << "\n");
-  generateStackAdjustment(MBB, MBBI, *ST.getInstrInfo(), dl,
-                          -(MFI.getStackSize() - AlreadyAdjusted), ARC::SP);
-
-  if (hasFP(MF)) {
-    LLVM_DEBUG(dbgs() << "Setting FP from SP.\n");
-    BuildMI(MBB, MBBI, dl,
-            TII->get(isUInt<6>(MFI.getStackSize()) ? ARC::ADD_rru6
-                                                   : ARC::ADD_rrlimm),
-            ARC::FP)
-        .addReg(ARC::SP)
-        .addImm(MFI.getStackSize());
-  }
-
-  // Emit CFI records:
-  // .cfi_def_cfa_offset StackSize
-  // .cfi_offset fp, -StackSize
-  // .cfi_offset blink, -StackSize+4
-  unsigned CFIIndex = MF.addFrameInst(
-      MCCFIInstruction::createDefCfaOffset(nullptr, -MFI.getStackSize()));
-  BuildMI(MBB, MBBI, dl, TII->get(TargetOpcode::CFI_INSTRUCTION))
-      .addCFIIndex(CFIIndex)
-      .setMIFlags(MachineInstr::FrameSetup);
-
-  int CurOffset = -4;
-  if (hasFP(MF)) {
-    CFIIndex = MF.addFrameInst(MCCFIInstruction::createOffset(
-        nullptr, MRI->getDwarfRegNum(ARC::FP, true), CurOffset));
-    BuildMI(MBB, MBBI, dl, TII->get(TargetOpcode::CFI_INSTRUCTION))
-        .addCFIIndex(CFIIndex)
-        .setMIFlags(MachineInstr::FrameSetup);
-    CurOffset -= 4;
-  }
-
-  if (MFI.hasCalls()) {
-    CFIIndex = MF.addFrameInst(MCCFIInstruction::createOffset(
-        nullptr, MRI->getDwarfRegNum(ARC::BLINK, true), CurOffset));
-    BuildMI(MBB, MBBI, dl, TII->get(TargetOpcode::CFI_INSTRUCTION))
-        .addCFIIndex(CFIIndex)
-        .setMIFlags(MachineInstr::FrameSetup);
-  }
-  // CFI for the rest of the registers.
-  for (const auto &Entry : CSI) {
-    unsigned Reg = Entry.getReg();
-    int FI = Entry.getFrameIdx();
-    // Skip BLINK and FP.
-    if ((hasFP(MF) && Reg == ARC::FP) || (MFI.hasCalls() && Reg == ARC::BLINK))
-      continue;
-    CFIIndex = MF.addFrameInst(MCCFIInstruction::createOffset(
-        nullptr, MRI->getDwarfRegNum(Reg, true), MFI.getObjectOffset(FI)));
-    BuildMI(MBB, MBBI, dl, TII->get(TargetOpcode::CFI_INSTRUCTION))
-        .addCFIIndex(CFIIndex)
-        .setMIFlags(MachineInstr::FrameSetup);
-  }
-}
-
-/// Insert epilog code into the function.
-/// For ARC, this inserts a call to a function that restores callee saved
-/// registers onto the stack, when enough callee saved registers are required.
-void ARCFrameLowering::emitEpilogue(MachineFunction &MF,
-                                    MachineBasicBlock &MBB) const {
-  LLVM_DEBUG(dbgs() << "Emit Epilogue: " << MF.getName() << "\n");
-  auto *AFI = MF.getInfo<ARCFunctionInfo>();
-  const ARCInstrInfo *TII = MF.getSubtarget<ARCSubtarget>().getInstrInfo();
-  MachineBasicBlock::iterator MBBI = MBB.getFirstTerminator();
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  uint64_t StackSize = MF.getFrameInfo().getStackSize();
-  bool SavedBlink = false;
-  unsigned AmountAboveFunclet = 0;
-  // If we have variable sized frame objects, then we have to move
-  // the stack pointer to a known spot (fp - StackSize).
-  // Then, replace the frame pointer by (new) [sp,StackSize-4].
-  // Then, move the stack pointer the rest of the way (sp = sp + StackSize).
-  if (hasFP(MF)) {
-    BuildMI(MBB, MBBI, DebugLoc(), TII->get(ARC::SUB_rru6), ARC::SP)
-        .addReg(ARC::FP)
-        .addImm(StackSize);
-    AmountAboveFunclet += 4;
-  }
-
-  // Now, move the stack pointer to the bottom of the save area for the funclet.
-  const std::vector<CalleeSavedInfo> &CSI = MFI.getCalleeSavedInfo();
-  unsigned Last = determineLastCalleeSave(CSI);
-  unsigned StackSlotsUsedByFunclet = 0;
-  // Now, restore the callee save registers.
-  if (UseSaveRestoreFunclet && Last > ARC::R14) {
-    // BL to __ld_r13_to_<TRI->getRegAsmName()>
-    StackSlotsUsedByFunclet = Last - ARC::R12;
-    AmountAboveFunclet += 4 * (StackSlotsUsedByFunclet + 1);
-    SavedBlink = true;
-  }
-
-  if (MFI.hasCalls() && !SavedBlink) {
-    AmountAboveFunclet += 4;
-    SavedBlink = true;
-  }
-
-  // Move the stack pointer up to the point of the funclet.
-  if (StackSize - AmountAboveFunclet) {
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::ADD_rru6))
-        .addReg(ARC::SP)
-        .addReg(ARC::SP)
-        .addImm(StackSize - AmountAboveFunclet);
-  }
-
-  if (StackSlotsUsedByFunclet) {
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::BL))
-        .addExternalSymbol(load_funclet_name[Last - ARC::R15])
-        .addReg(ARC::BLINK, RegState::Implicit | RegState::Kill);
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::ADD_rru6))
-        .addReg(ARC::SP)
-        .addReg(ARC::SP)
-        .addImm(4 * (StackSlotsUsedByFunclet));
-  }
-  // Now, pop blink if necessary.
-  if (SavedBlink) {
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::POP_S_BLINK));
-  }
-  // Now, pop fp if necessary.
-  if (hasFP(MF)) {
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::LD_AB_rs9))
-        .addReg(ARC::SP, RegState::Define)
-        .addReg(ARC::FP, RegState::Define)
-        .addReg(ARC::SP)
-        .addImm(4);
-  }
-
-  // Relieve the varargs area if necessary.
-  if (MF.getFunction().isVarArg()) {
-    // Add in the varargs area here first.
-    LLVM_DEBUG(dbgs() << "Varargs\n");
-    unsigned VarArgsBytes = MFI.getObjectSize(AFI->getVarArgsFrameIndex());
-    BuildMI(MBB, MBBI, MBB.findDebugLoc(MBBI), TII->get(ARC::ADD_rru6))
-        .addReg(ARC::SP)
-        .addReg(ARC::SP)
-        .addImm(VarArgsBytes);
-  }
-}
-
-static std::vector<CalleeSavedInfo>::iterator
-getSavedReg(std::vector<CalleeSavedInfo> &V, unsigned reg) {
-  for (auto I = V.begin(), E = V.end(); I != E; ++I) {
-    if (reg == I->getReg())
-      return I;
-  }
-  return V.end();
-}
-
-bool ARCFrameLowering::assignCalleeSavedSpillSlots(
-    MachineFunction &MF, const TargetRegisterInfo *TRI,
-    std::vector<CalleeSavedInfo> &CSI) const {
-  // Use this opportunity to assign the spill slots for all of the potential
-  // callee save registers (blink, fp, r13->r25) that we care about the
-  // placement for.  We can calculate all of that data here.
-  int CurOffset = -4;
-  unsigned Last = determineLastCalleeSave(CSI);
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  if (hasFP(MF)) {
-    // Create a fixed slot at for FP
-    int StackObj = MFI.CreateFixedSpillStackObject(4, CurOffset, true);
-    LLVM_DEBUG(dbgs() << "Creating fixed object (" << StackObj << ") for FP at "
-                      << CurOffset << "\n");
-    (void)StackObj;
-    CurOffset -= 4;
-  }
-  if (MFI.hasCalls() || (UseSaveRestoreFunclet && Last > ARC::R14)) {
-    // Create a fixed slot for BLINK.
-    int StackObj  = MFI.CreateFixedSpillStackObject(4, CurOffset, true);
-    LLVM_DEBUG(dbgs() << "Creating fixed object (" << StackObj
-                      << ") for BLINK at " << CurOffset << "\n");
-    (void)StackObj;
-    CurOffset -= 4;
-  }
-
-  // Create slots for last down to r13.
-  for (unsigned Which = Last; Which > ARC::R12; Which--) {
-    auto RegI = getSavedReg(CSI, Which);
-    if (RegI == CSI.end() || RegI->getFrameIdx() == 0) {
-      // Always create the stack slot.  If for some reason the register isn't in
-      // the save list, then don't worry about it.
-      int FI = MFI.CreateFixedSpillStackObject(4, CurOffset, true);
-      if (RegI != CSI.end())
-        RegI->setFrameIdx(FI);
-    } else
-      MFI.setObjectOffset(RegI->getFrameIdx(), CurOffset);
-    CurOffset -= 4;
-  }
-  for (auto &I : CSI) {
-    if (I.getReg() > ARC::R12)
-      continue;
-    if (I.getFrameIdx() == 0) {
-      I.setFrameIdx(MFI.CreateFixedSpillStackObject(4, CurOffset, true));
-      LLVM_DEBUG(dbgs() << "Creating fixed object (" << I.getFrameIdx()
-                        << ") for other register at " << CurOffset << "\n");
-    } else {
-      MFI.setObjectOffset(I.getFrameIdx(), CurOffset);
-      LLVM_DEBUG(dbgs() << "Updating fixed object (" << I.getFrameIdx()
-                        << ") for other register at " << CurOffset << "\n");
-    }
-    CurOffset -= 4;
-  }
-  return true;
-}
-
-bool ARCFrameLowering::spillCalleeSavedRegisters(
-    MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
-    const std::vector<CalleeSavedInfo> &CSI,
-    const TargetRegisterInfo *TRI) const {
-  LLVM_DEBUG(dbgs() << "Spill callee saved registers: "
-                    << MBB.getParent()->getName() << "\n");
-  // There are routines for saving at least 3 registers (r13 to r15, etc.)
-  unsigned Last = determineLastCalleeSave(CSI);
-  if (UseSaveRestoreFunclet && Last > ARC::R14) {
-    // Use setObjectOffset for these registers.
-    // Needs to be in or before processFunctionBeforeFrameFinalized.
-    // Or, do assignCalleeSaveSpillSlots?
-    // Will be handled in prolog.
-    return true;
-  }
-  return false;
-}
-
-bool ARCFrameLowering::restoreCalleeSavedRegisters(
-    MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
-    std::vector<CalleeSavedInfo> &CSI, const TargetRegisterInfo *TRI) const {
-  LLVM_DEBUG(dbgs() << "Restore callee saved registers: "
-                    << MBB.getParent()->getName() << "\n");
-  // There are routines for saving at least 3 registers (r13 to r15, etc.)
-  unsigned Last = determineLastCalleeSave(CSI);
-  if (UseSaveRestoreFunclet && Last > ARC::R14) {
-    // Will be handled in epilog.
-    return true;
-  }
-  return false;
-}
-
-// Adjust local variables that are 4-bytes or larger to 4-byte boundary
-void ARCFrameLowering::processFunctionBeforeFrameFinalized(
-    MachineFunction &MF, RegScavenger *RS) const {
-  const TargetRegisterInfo *RegInfo = MF.getSubtarget().getRegisterInfo();
-  LLVM_DEBUG(dbgs() << "Process function before frame finalized: "
-                    << MF.getName() << "\n");
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  LLVM_DEBUG(dbgs() << "Current stack size: " << MFI.getStackSize() << "\n");
-  const TargetRegisterClass *RC = &ARC::GPR32RegClass;
-  if (MFI.hasStackObjects()) {
-    int RegScavFI = MFI.CreateStackObject(
-        RegInfo->getSpillSize(*RC), RegInfo->getSpillAlignment(*RC), false);
-    RS->addScavengingFrameIndex(RegScavFI);
-    LLVM_DEBUG(dbgs() << "Created scavenging index RegScavFI=" << RegScavFI
-                      << "\n");
-  }
-}
-
-static void emitRegUpdate(MachineBasicBlock &MBB,
-                          MachineBasicBlock::iterator &MBBI, DebugLoc dl,
-                          unsigned Reg, int NumBytes, bool IsAdd,
-                          const ARCInstrInfo *TII) {
-  unsigned Opc = IsAdd ? ARC::ADD_rru6 : ARC::SUB_rru6;
-  BuildMI(MBB, MBBI, dl, TII->get(Opc), Reg)
-      .addReg(Reg, RegState::Kill)
-      .addImm(NumBytes);
-}
-
-MachineBasicBlock::iterator ARCFrameLowering::eliminateCallFramePseudoInstr(
-    MachineFunction &MF, MachineBasicBlock &MBB,
-    MachineBasicBlock::iterator I) const {
-  LLVM_DEBUG(dbgs() << "EmitCallFramePseudo: " << MF.getName() << "\n");
-  const ARCInstrInfo *TII = MF.getSubtarget<ARCSubtarget>().getInstrInfo();
-  MachineInstr &Old = *I;
-  DebugLoc dl = Old.getDebugLoc();
-  unsigned Amt = Old.getOperand(0).getImm();
-  auto *AFI = MF.getInfo<ARCFunctionInfo>();
-  if (!hasFP(MF)) {
-    if (Amt > AFI->MaxCallStackReq && Old.getOpcode() == ARC::ADJCALLSTACKDOWN)
-      AFI->MaxCallStackReq = Amt;
-  } else {
-    if (Amt != 0) {
-      assert((Old.getOpcode() == ARC::ADJCALLSTACKDOWN ||
-              Old.getOpcode() == ARC::ADJCALLSTACKUP) &&
-             "Unknown Frame Pseudo.");
-      bool IsAdd = (Old.getOpcode() == ARC::ADJCALLSTACKUP);
-      emitRegUpdate(MBB, I, dl, ARC::SP, Amt, IsAdd, TII);
-    }
-  }
-  return MBB.erase(I);
-}
-
-bool ARCFrameLowering::hasFP(const MachineFunction &MF) const {
-  const TargetRegisterInfo *RegInfo = MF.getSubtarget().getRegisterInfo();
-  bool HasFP = MF.getTarget().Options.DisableFramePointerElim(MF) ||
-               MF.getFrameInfo().hasVarSizedObjects() ||
-               MF.getFrameInfo().isFrameAddressTaken() ||
-               RegInfo->needsStackRealignment(MF);
-  return HasFP;
-}