R600 -> AMDGPU rename

[oota-llvm.git] / lib / Target / R600 / AMDGPUFrameLowering.cpp

diff --git a/lib/Target/R600/AMDGPUFrameLowering.cpp b/lib/Target/R600/AMDGPUFrameLowering.cpp
deleted file mode 100644 (file)
index 8175786..0000000
--- a/lib/Target/R600/AMDGPUFrameLowering.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-//===----------------------- AMDGPUFrameLowering.cpp ----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//==-----------------------------------------------------------------------===//
-//
-// Interface to describe a layout of a stack frame on a AMDIL target machine
-//
-//===----------------------------------------------------------------------===//
-#include "AMDGPUFrameLowering.h"
-#include "AMDGPURegisterInfo.h"
-#include "R600MachineFunctionInfo.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/IR/Instructions.h"
-
-using namespace llvm;
-AMDGPUFrameLowering::AMDGPUFrameLowering(StackDirection D, unsigned StackAl,
-    int LAO, unsigned TransAl)
-  : TargetFrameLowering(D, StackAl, LAO, TransAl) { }
-
-AMDGPUFrameLowering::~AMDGPUFrameLowering() { }
-
-unsigned AMDGPUFrameLowering::getStackWidth(const MachineFunction &MF) const {
-
-  // XXX: Hardcoding to 1 for now.
-  //
-  // I think the StackWidth should stored as metadata associated with the
-  // MachineFunction.  This metadata can either be added by a frontend, or
-  // calculated by a R600 specific LLVM IR pass.
-  //
-  // The StackWidth determines how stack objects are laid out in memory.
-  // For a vector stack variable, like: int4 stack[2], the data will be stored
-  // in the following ways depending on the StackWidth.
-  //
-  // StackWidth = 1:
-  //
-  // T0.X = stack[0].x
-  // T1.X = stack[0].y
-  // T2.X = stack[0].z
-  // T3.X = stack[0].w
-  // T4.X = stack[1].x
-  // T5.X = stack[1].y
-  // T6.X = stack[1].z
-  // T7.X = stack[1].w
-  //
-  // StackWidth = 2:
-  //
-  // T0.X = stack[0].x
-  // T0.Y = stack[0].y
-  // T1.X = stack[0].z
-  // T1.Y = stack[0].w
-  // T2.X = stack[1].x
-  // T2.Y = stack[1].y
-  // T3.X = stack[1].z
-  // T3.Y = stack[1].w
-  // 
-  // StackWidth = 4:
-  // T0.X = stack[0].x
-  // T0.Y = stack[0].y
-  // T0.Z = stack[0].z
-  // T0.W = stack[0].w
-  // T1.X = stack[1].x
-  // T1.Y = stack[1].y
-  // T1.Z = stack[1].z
-  // T1.W = stack[1].w
-  return 1;
-}
-
-/// \returns The number of registers allocated for \p FI.
-int AMDGPUFrameLowering::getFrameIndexOffset(const MachineFunction &MF,
-                                         int FI) const {
-  const MachineFrameInfo *MFI = MF.getFrameInfo();
-  // Start the offset at 2 so we don't overwrite work group information.
-  // XXX: 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 = RoundUpToAlignment(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 = RoundUpToAlignment(OffsetBytes, 4);
-  }
-
-  if (FI != -1)
-    OffsetBytes = RoundUpToAlignment(OffsetBytes, MFI->getObjectAlignment(FI));
-
-  return OffsetBytes / (getStackWidth(MF) * 4);
-}
-
-const TargetFrameLowering::SpillSlot *
-AMDGPUFrameLowering::getCalleeSavedSpillSlots(unsigned &NumEntries) const {
-  NumEntries = 0;
-  return nullptr;
-}
-void AMDGPUFrameLowering::emitPrologue(MachineFunction &MF,
-                                       MachineBasicBlock &MBB) const {}
-void
-AMDGPUFrameLowering::emitEpilogue(MachineFunction &MF,
-                                  MachineBasicBlock &MBB) const {
-}
-
-bool
-AMDGPUFrameLowering::hasFP(const MachineFunction &MF) const {
-  return false;
-}