1 files changed, 0 insertions, 128 deletions

diff --git a/contrib/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp b/contrib/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp
deleted file mode 100644
index 9c4483cb240d..000000000000
--- a/contrib/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp
+++ /dev/null
@@ -1,128 +0,0 @@
-//===- TargetFrameLoweringImpl.cpp - Implement target frame interface ------==//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// Implements the layout of a stack frame on the target machine.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/BitVector.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/TargetFrameLowering.h"
-#include "llvm/CodeGen/TargetRegisterInfo.h"
-#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include "llvm/IR/Attributes.h"
-#include "llvm/IR/CallingConv.h"
-#include "llvm/IR/Function.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-
-using namespace llvm;
-
-TargetFrameLowering::~TargetFrameLowering() = default;
-
-bool TargetFrameLowering::enableCalleeSaveSkip(const MachineFunction &MF) const {
-  assert(MF.getFunction().hasFnAttribute(Attribute::NoReturn) &&
-         MF.getFunction().hasFnAttribute(Attribute::NoUnwind) &&
-         !MF.getFunction().hasFnAttribute(Attribute::UWTable));
-  return false;
-}
-
-/// Returns the displacement from the frame register to the stack
-/// frame of the specified index, along with the frame register used
-/// (in output arg FrameReg). This is the default implementation which
-/// is overridden for some targets.
-int TargetFrameLowering::getFrameIndexReference(const MachineFunction &MF,
-                                             int FI, unsigned &FrameReg) const {
-  const MachineFrameInfo &MFI = MF.getFrameInfo();
-  const TargetRegisterInfo *RI = MF.getSubtarget().getRegisterInfo();
-
-  // By default, assume all frame indices are referenced via whatever
-  // getFrameRegister() says. The target can override this if it's doing
-  // something different.
-  FrameReg = RI->getFrameRegister(MF);
-
-  return MFI.getObjectOffset(FI) + MFI.getStackSize() -
-         getOffsetOfLocalArea() + MFI.getOffsetAdjustment();
-}
-
-bool TargetFrameLowering::needsFrameIndexResolution(
-    const MachineFunction &MF) const {
-  return MF.getFrameInfo().hasStackObjects();
-}
-
-void TargetFrameLowering::determineCalleeSaves(MachineFunction &MF,
-                                               BitVector &SavedRegs,
-                                               RegScavenger *RS) const {
-  const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
-
-  // Resize before the early returns. Some backends expect that
-  // SavedRegs.size() == TRI.getNumRegs() after this call even if there are no
-  // saved registers.
-  SavedRegs.resize(TRI.getNumRegs());
-
-  // When interprocedural register allocation is enabled caller saved registers
-  // are preferred over callee saved registers.
-  if (MF.getTarget().Options.EnableIPRA && isSafeForNoCSROpt(MF.getFunction()))
-    return;
-
-  // Get the callee saved register list...
-  const MCPhysReg *CSRegs = MF.getRegInfo().getCalleeSavedRegs();
-
-  // Early exit if there are no callee saved registers.
-  if (!CSRegs || CSRegs[0] == 0)
-    return;
-
-  // In Naked functions we aren't going to save any registers.
-  if (MF.getFunction().hasFnAttribute(Attribute::Naked))
-    return;
-
-  // Noreturn+nounwind functions never restore CSR, so no saves are needed.
-  // Purely noreturn functions may still return through throws, so those must
-  // save CSR for caller exception handlers.
-  //
-  // If the function uses longjmp to break out of its current path of
-  // execution we do not need the CSR spills either: setjmp stores all CSRs
-  // it was called with into the jmp_buf, which longjmp then restores.
-  if (MF.getFunction().hasFnAttribute(Attribute::NoReturn) &&
-        MF.getFunction().hasFnAttribute(Attribute::NoUnwind) &&
-        !MF.getFunction().hasFnAttribute(Attribute::UWTable) &&
-        enableCalleeSaveSkip(MF))
-    return;
-
-  // Functions which call __builtin_unwind_init get all their registers saved.
-  bool CallsUnwindInit = MF.callsUnwindInit();
-  const MachineRegisterInfo &MRI = MF.getRegInfo();
-  for (unsigned i = 0; CSRegs[i]; ++i) {
-    unsigned Reg = CSRegs[i];
-    if (CallsUnwindInit || MRI.isPhysRegModified(Reg))
-      SavedRegs.set(Reg);
-  }
-}
-
-unsigned TargetFrameLowering::getStackAlignmentSkew(
-    const MachineFunction &MF) const {
-  // When HHVM function is called, the stack is skewed as the return address
-  // is removed from the stack before we enter the function.
-  if (LLVM_UNLIKELY(MF.getFunction().getCallingConv() == CallingConv::HHVM))
-    return MF.getTarget().getAllocaPointerSize();
-
-  return 0;
-}
-
-int TargetFrameLowering::getInitialCFAOffset(const MachineFunction &MF) const {
-  llvm_unreachable("getInitialCFAOffset() not implemented!");
-}
-
-unsigned TargetFrameLowering::getInitialCFARegister(const MachineFunction &MF)
-    const {
-  llvm_unreachable("getInitialCFARegister() not implemented!");
-}
\ No newline at end of file