1 files changed, 0 insertions, 146 deletions
diff --git a/gnu/llvm/lib/CodeGen/LiveRegUnits.cpp b/gnu/llvm/lib/CodeGen/LiveRegUnits.cpp
deleted file mode 100644
index c2268138549..00000000000
--- a/gnu/llvm/lib/CodeGen/LiveRegUnits.cpp
+++ /dev/null
@@ -1,146 +0,0 @@
-//===- LiveRegUnits.cpp - Register Unit Set -------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-/// \file This file imlements the LiveRegUnits set.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/LiveRegUnits.h"
-
-#include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstrBundle.h"
-#include "llvm/CodeGen/MachineOperand.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/TargetRegisterInfo.h"
-#include "llvm/MC/MCRegisterInfo.h"
-
-using namespace llvm;
-
-void LiveRegUnits::removeRegsNotPreserved(const uint32_t *RegMask) {
-  for (unsigned U = 0, E = TRI->getNumRegUnits(); U != E; ++U) {
-    for (MCRegUnitRootIterator RootReg(U, TRI); RootReg.isValid(); ++RootReg) {
-      if (MachineOperand::clobbersPhysReg(RegMask, *RootReg))
-        Units.reset(U);
-    }
-  }
-}
-
-void LiveRegUnits::addRegsInMask(const uint32_t *RegMask) {
-  for (unsigned U = 0, E = TRI->getNumRegUnits(); U != E; ++U) {
-    for (MCRegUnitRootIterator RootReg(U, TRI); RootReg.isValid(); ++RootReg) {
-      if (MachineOperand::clobbersPhysReg(RegMask, *RootReg))
-        Units.set(U);
-    }
-  }
-}
-
-void LiveRegUnits::stepBackward(const MachineInstr &MI) {
-  // Remove defined registers and regmask kills from the set.
-  for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
-    if (O->isReg()) {
-      if (!O->isDef() || O->isDebug())
-        continue;
-      unsigned Reg = O->getReg();
-      if (!TargetRegisterInfo::isPhysicalRegister(Reg))
-        continue;
-      removeReg(Reg);
-    } else if (O->isRegMask())
-      removeRegsNotPreserved(O->getRegMask());
-  }
-
-  // Add uses to the set.
-  for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
-    if (!O->isReg() || !O->readsReg() || O->isDebug())
-      continue;
-    unsigned Reg = O->getReg();
-    if (!TargetRegisterInfo::isPhysicalRegister(Reg))
-      continue;
-    addReg(Reg);
-  }
-}
-
-void LiveRegUnits::accumulate(const MachineInstr &MI) {
-  // Add defs, uses and regmask clobbers to the set.
-  for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
-    if (O->isReg()) {
-      unsigned Reg = O->getReg();
-      if (!TargetRegisterInfo::isPhysicalRegister(Reg))
-        continue;
-      if (!O->isDef() && !O->readsReg())
-        continue;
-      addReg(Reg);
-    } else if (O->isRegMask())
-      addRegsInMask(O->getRegMask());
-  }
-}
-
-/// Add live-in registers of basic block \p MBB to \p LiveUnits.
-static void addBlockLiveIns(LiveRegUnits &LiveUnits,
-                            const MachineBasicBlock &MBB) {
-  for (const auto &LI : MBB.liveins())
-    LiveUnits.addRegMasked(LI.PhysReg, LI.LaneMask);
-}
-
-/// Adds all callee saved registers to \p LiveUnits.
-static void addCalleeSavedRegs(LiveRegUnits &LiveUnits,
-                               const MachineFunction &MF) {
-  const MachineRegisterInfo &MRI = MF.getRegInfo();
-  for (const MCPhysReg *CSR = MRI.getCalleeSavedRegs(); CSR && *CSR; ++CSR)
-    LiveUnits.addReg(*CSR);
-}
-
-void LiveRegUnits::addPristines(const MachineFunction &MF) {
-  const MachineFrameInfo &MFI = MF.getFrameInfo();
-  if (!MFI.isCalleeSavedInfoValid())
-    return;
-  /// This function will usually be called on an empty object, handle this
-  /// as a special case.
-  if (empty()) {
-    /// Add all callee saved regs, then remove the ones that are saved and
-    /// restored.
-    addCalleeSavedRegs(*this, MF);
-    /// Remove the ones that are not saved/restored; they are pristine.
-    for (const CalleeSavedInfo &Info : MFI.getCalleeSavedInfo())
-      removeReg(Info.getReg());
-    return;
-  }
-  /// If a callee-saved register that is not pristine is already present
-  /// in the set, we should make sure that it stays in it. Precompute the
-  /// set of pristine registers in a separate object.
-  /// Add all callee saved regs, then remove the ones that are saved+restored.
-  LiveRegUnits Pristine(*TRI);
-  addCalleeSavedRegs(Pristine, MF);
-  /// Remove the ones that are not saved/restored; they are pristine.
-  for (const CalleeSavedInfo &Info : MFI.getCalleeSavedInfo())
-    Pristine.removeReg(Info.getReg());
-  addUnits(Pristine.getBitVector());
-}
-
-void LiveRegUnits::addLiveOuts(const MachineBasicBlock &MBB) {
-  const MachineFunction &MF = *MBB.getParent();
-  if (!MBB.succ_empty()) {
-    addPristines(MF);
-    // To get the live-outs we simply merge the live-ins of all successors.
-    for (const MachineBasicBlock *Succ : MBB.successors())
-      addBlockLiveIns(*this, *Succ);
-  } else if (MBB.isReturnBlock()) {
-    // For the return block: Add all callee saved registers.
-    const MachineFrameInfo &MFI = MF.getFrameInfo();
-    if (MFI.isCalleeSavedInfoValid())
-      addCalleeSavedRegs(*this, MF);
-  }
-}
-
-void LiveRegUnits::addLiveIns(const MachineBasicBlock &MBB) {
-  const MachineFunction &MF = *MBB.getParent();
-  addPristines(MF);
-  addBlockLiveIns(*this, MBB);
-}