Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.

1 files changed, 0 insertions, 180 deletions

diff --git a/contrib/llvm/lib/Target/Mips/Mips16FrameLowering.cpp b/contrib/llvm/lib/Target/Mips/Mips16FrameLowering.cpp
deleted file mode 100644
index 5a2a916a6b7a..000000000000
--- a/contrib/llvm/lib/Target/Mips/Mips16FrameLowering.cpp
+++ /dev/null
@@ -1,180 +0,0 @@
-//===- Mips16FrameLowering.cpp - Mips16 Frame Information -----------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains the Mips16 implementation of TargetFrameLowering class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Mips16FrameLowering.h"
-#include "MCTargetDesc/MipsBaseInfo.h"
-#include "Mips16InstrInfo.h"
-#include "MipsInstrInfo.h"
-#include "MipsRegisterInfo.h"
-#include "MipsSubtarget.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/IR/DebugLoc.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCDwarf.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MachineLocation.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/CodeGen/TargetFrameLowering.h"
-#include <cassert>
-#include <cstdint>
-#include <vector>
-
-using namespace llvm;
-
-Mips16FrameLowering::Mips16FrameLowering(const MipsSubtarget &STI)
-    : MipsFrameLowering(STI, STI.getStackAlignment()) {}
-
-void Mips16FrameLowering::emitPrologue(MachineFunction &MF,
-                                       MachineBasicBlock &MBB) const {
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  const Mips16InstrInfo &TII =
-      *static_cast<const Mips16InstrInfo *>(STI.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;
-
-  uint64_t StackSize = MFI.getStackSize();
-
-  // No need to allocate space on the stack.
-  if (StackSize == 0 && !MFI.adjustsStack()) return;
-
-  MachineModuleInfo &MMI = MF.getMMI();
-  const MCRegisterInfo *MRI = MMI.getContext().getRegisterInfo();
-
-  // Adjust stack.
-  TII.makeFrame(Mips::SP, StackSize, MBB, MBBI);
-
-  // emit ".cfi_def_cfa_offset StackSize"
-  unsigned CFIIndex = MF.addFrameInst(
-      MCCFIInstruction::createDefCfaOffset(nullptr, -StackSize));
-  BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
-      .addCFIIndex(CFIIndex);
-
-  const std::vector<CalleeSavedInfo> &CSI = MFI.getCalleeSavedInfo();
-
-  if (!CSI.empty()) {
-    const std::vector<CalleeSavedInfo> &CSI = MFI.getCalleeSavedInfo();
-
-    for (std::vector<CalleeSavedInfo>::const_iterator I = CSI.begin(),
-         E = CSI.end(); I != E; ++I) {
-      int64_t Offset = MFI.getObjectOffset(I->getFrameIdx());
-      unsigned Reg = I->getReg();
-      unsigned DReg = MRI->getDwarfRegNum(Reg, true);
-      unsigned CFIIndex = MF.addFrameInst(
-          MCCFIInstruction::createOffset(nullptr, DReg, Offset));
-      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
-          .addCFIIndex(CFIIndex);
-    }
-  }
-  if (hasFP(MF))
-    BuildMI(MBB, MBBI, dl, TII.get(Mips::MoveR3216), Mips::S0)
-      .addReg(Mips::SP).setMIFlag(MachineInstr::FrameSetup);
-}
-
-void Mips16FrameLowering::emitEpilogue(MachineFunction &MF,
-                                 MachineBasicBlock &MBB) const {
-  MachineBasicBlock::iterator MBBI = MBB.getFirstTerminator();
-  MachineFrameInfo &MFI = MF.getFrameInfo();
-  const Mips16InstrInfo &TII =
-      *static_cast<const Mips16InstrInfo *>(STI.getInstrInfo());
-  DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
-  uint64_t StackSize = MFI.getStackSize();
-
-  if (!StackSize)
-    return;
-
-  if (hasFP(MF))
-    BuildMI(MBB, MBBI, dl, TII.get(Mips::Move32R16), Mips::SP)
-      .addReg(Mips::S0);
-
-  // Adjust stack.
-  // assumes stacksize multiple of 8
-  TII.restoreFrame(Mips::SP, StackSize, MBB, MBBI);
-}
-
-bool Mips16FrameLowering::
-spillCalleeSavedRegisters(MachineBasicBlock &MBB,
-                          MachineBasicBlock::iterator MI,
-                          const std::vector<CalleeSavedInfo> &CSI,
-                          const TargetRegisterInfo *TRI) const {
-  MachineFunction *MF = MBB.getParent();
-
-  //
-  // Registers RA, S0,S1 are the callee saved registers and they
-  // will be saved with the "save" instruction
-  // during emitPrologue
-  //
-  for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
-    // Add the callee-saved register as live-in. Do not add if the register is
-    // RA and return address is taken, because it has already been added in
-    // method MipsTargetLowering::lowerRETURNADDR.
-    // It's killed at the spill, unless the register is RA and return address
-    // is taken.
-    unsigned Reg = CSI[i].getReg();
-    bool IsRAAndRetAddrIsTaken = (Reg == Mips::RA)
-      && MF->getFrameInfo().isReturnAddressTaken();
-    if (!IsRAAndRetAddrIsTaken)
-      MBB.addLiveIn(Reg);
-  }
-
-  return true;
-}
-
-bool Mips16FrameLowering::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                          MachineBasicBlock::iterator MI,
-                                       std::vector<CalleeSavedInfo> &CSI,
-                                       const TargetRegisterInfo *TRI) const {
-  //
-  // Registers RA,S0,S1 are the callee saved registers and they will be restored
-  // with the restore instruction during emitEpilogue.
-  // We need to override this virtual function, otherwise llvm will try and
-  // restore the registers on it's on from the stack.
-  //
-
-  return true;
-}
-
-bool
-Mips16FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
-  const MachineFrameInfo &MFI = MF.getFrameInfo();
-  // Reserve call frame if the size of the maximum call frame fits into 15-bit
-  // immediate field and there are no variable sized objects on the stack.
-  return isInt<15>(MFI.getMaxCallFrameSize()) && !MFI.hasVarSizedObjects();
-}
-
-void Mips16FrameLowering::determineCalleeSaves(MachineFunction &MF,
-                                               BitVector &SavedRegs,
-                                               RegScavenger *RS) const {
-  TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS);
-  const Mips16InstrInfo &TII =
-      *static_cast<const Mips16InstrInfo *>(STI.getInstrInfo());
-  const MipsRegisterInfo &RI = TII.getRegisterInfo();
-  const BitVector Reserved = RI.getReservedRegs(MF);
-  bool SaveS2 = Reserved[Mips::S2];
-  if (SaveS2)
-    SavedRegs.set(Mips::S2);
-  if (hasFP(MF))
-    SavedRegs.set(Mips::S0);
-}
-
-const MipsFrameLowering *
-llvm::createMips16FrameLowering(const MipsSubtarget &ST) {
-  return new Mips16FrameLowering(ST);
-}