1 files changed, 0 insertions, 143 deletions
diff --git a/lib/Target/Alpha/AlphaFrameLowering.cpp b/lib/Target/Alpha/AlphaFrameLowering.cpp
deleted file mode 100644
index 690cd1d..0000000
--- a/lib/Target/Alpha/AlphaFrameLowering.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-//=====- AlphaFrameLowering.cpp - Alpha Frame Information ------*- C++ -*-====//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains the Alpha implementation of TargetFrameLowering class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "AlphaFrameLowering.h"
-#include "AlphaInstrInfo.h"
-#include "AlphaMachineFunctionInfo.h"
-#include "llvm/Function.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/ADT/Twine.h"
-
-using namespace llvm;
-
-static long getUpper16(long l) {
-  long y = l / Alpha::IMM_MULT;
-  if (l % Alpha::IMM_MULT > Alpha::IMM_HIGH)
-    ++y;
-  return y;
-}
-
-static long getLower16(long l) {
-  long h = getUpper16(l);
-  return l - h * Alpha::IMM_MULT;
-}
-
-// hasFP - Return true if the specified function should have a dedicated frame
-// pointer register.  This is true if the function has variable sized allocas or
-// if frame pointer elimination is disabled.
-//
-bool AlphaFrameLowering::hasFP(const MachineFunction &MF) const {
-  const MachineFrameInfo *MFI = MF.getFrameInfo();
-  return MFI->hasVarSizedObjects();
-}
-
-void AlphaFrameLowering::emitPrologue(MachineFunction &MF) const {
-  MachineBasicBlock &MBB = MF.front();   // Prolog goes in entry BB
-  MachineBasicBlock::iterator MBBI = MBB.begin();
-  MachineFrameInfo *MFI = MF.getFrameInfo();
-  const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
-
-  DebugLoc dl = (MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc());
-  bool FP = hasFP(MF);
-
-  // Handle GOP offset
-  BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDAHg), Alpha::R29)
-    .addGlobalAddress(MF.getFunction()).addReg(Alpha::R27).addImm(++curgpdist);
-  BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDAg), Alpha::R29)
-    .addGlobalAddress(MF.getFunction()).addReg(Alpha::R29).addImm(curgpdist);
-
-  BuildMI(MBB, MBBI, dl, TII.get(Alpha::ALTENT))
-    .addGlobalAddress(MF.getFunction());
-
-  // Get the number of bytes to allocate from the FrameInfo
-  long NumBytes = MFI->getStackSize();
-
-  if (FP)
-    NumBytes += 8; //reserve space for the old FP
-
-  // Do we need to allocate space on the stack?
-  if (NumBytes == 0) return;
-
-  unsigned Align = getStackAlignment();
-  NumBytes = (NumBytes+Align-1)/Align*Align;
-
-  // Update frame info to pretend that this is part of the stack...
-  MFI->setStackSize(NumBytes);
-
-  // adjust stack pointer: r30 -= numbytes
-  NumBytes = -NumBytes;
-  if (NumBytes >= Alpha::IMM_LOW) {
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDA), Alpha::R30).addImm(NumBytes)
-      .addReg(Alpha::R30);
-  } else if (getUpper16(NumBytes) >= Alpha::IMM_LOW) {
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDAH), Alpha::R30)
-      .addImm(getUpper16(NumBytes)).addReg(Alpha::R30);
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDA), Alpha::R30)
-      .addImm(getLower16(NumBytes)).addReg(Alpha::R30);
-  } else {
-    report_fatal_error("Too big a stack frame at " + Twine(NumBytes));
-  }
-
-  // Now if we need to, save the old FP and set the new
-  if (FP) {
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::STQ))
-      .addReg(Alpha::R15).addImm(0).addReg(Alpha::R30);
-    // This must be the last instr in the prolog
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::BISr), Alpha::R15)
-      .addReg(Alpha::R30).addReg(Alpha::R30);
-  }
-
-}
-
-void AlphaFrameLowering::emitEpilogue(MachineFunction &MF,
-                                  MachineBasicBlock &MBB) const {
-  const MachineFrameInfo *MFI = MF.getFrameInfo();
-  MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
-  const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
-
-  assert((MBBI->getOpcode() == Alpha::RETDAG ||
-          MBBI->getOpcode() == Alpha::RETDAGp)
-         && "Can only insert epilog into returning blocks");
-  DebugLoc dl = MBBI->getDebugLoc();
-
-  bool FP = hasFP(MF);
-
-  // Get the number of bytes allocated from the FrameInfo...
-  long NumBytes = MFI->getStackSize();
-
-  //now if we need to, restore the old FP
-  if (FP) {
-    //copy the FP into the SP (discards allocas)
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::BISr), Alpha::R30).addReg(Alpha::R15)
-      .addReg(Alpha::R15);
-    //restore the FP
-    BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDQ), Alpha::R15)
-      .addImm(0).addReg(Alpha::R15);
-  }
-
-  if (NumBytes != 0) {
-    if (NumBytes <= Alpha::IMM_HIGH) {
-      BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDA), Alpha::R30).addImm(NumBytes)
-        .addReg(Alpha::R30);
-    } else if (getUpper16(NumBytes) <= Alpha::IMM_HIGH) {
-      BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDAH), Alpha::R30)
-        .addImm(getUpper16(NumBytes)).addReg(Alpha::R30);
-      BuildMI(MBB, MBBI, dl, TII.get(Alpha::LDA), Alpha::R30)
-        .addImm(getLower16(NumBytes)).addReg(Alpha::R30);
-    } else {
-      report_fatal_error("Too big a stack frame at " + Twine(NumBytes));
-    }
-  }
-}