Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/lib/Target/AMDGPU/R600FrameLowering.cpp

@@ -1,50 +0,0 @@
-//===----------------------- R600FrameLowering.cpp ------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//==-----------------------------------------------------------------------===//
-
-#include "R600FrameLowering.h"
-#include "AMDGPUSubtarget.h"
-#include "R600RegisterInfo.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Support/MathExtras.h"
-
-using namespace llvm;
-
-R600FrameLowering::~R600FrameLowering() = default;
-
-/// \returns The number of registers allocated for \p FI.
-int R600FrameLowering::getFrameIndexReference(const MachineFunction &MF,
-                                              int FI,
-                                              unsigned &FrameReg) const {
-  const MachineFrameInfo &MFI = MF.getFrameInfo();
-  const R600RegisterInfo *RI
-    = MF.getSubtarget<R600Subtarget>().getRegisterInfo();
-
-  // Fill in FrameReg output argument.
-  FrameReg = RI->getFrameRegister(MF);
-
-  // Start the offset at 2 so we don't overwrite work group information.
-  // FIXME: We should only do this when the shader actually uses this
-  // information.
-  unsigned OffsetBytes = 2 * (getStackWidth(MF) * 4);
-  int UpperBound = FI == -1 ? MFI.getNumObjects() : FI;
-
-  for (int i = MFI.getObjectIndexBegin(); i < UpperBound; ++i) {
-    OffsetBytes = alignTo(OffsetBytes, MFI.getObjectAlignment(i));
-    OffsetBytes += MFI.getObjectSize(i);
-    // Each register holds 4 bytes, so we must always align the offset to at
-    // least 4 bytes, so that 2 frame objects won't share the same register.
-    OffsetBytes = alignTo(OffsetBytes, 4);
-  }
-
-  if (FI != -1)
-    OffsetBytes = alignTo(OffsetBytes, MFI.getObjectAlignment(FI));
-
-  return OffsetBytes / (getStackWidth(MF) * 4);
-}