Implement the rex64 prefix.

[oota-llvm.git] / lib / Target / X86 / X86RegisterInfo.cpp

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 5cbbb06f37b53a235fbf1a199d0585e5adc86ff4..3228b141eb677f6bdfe4b082d940eba6ad833f70 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -464,41 +464,6 @@ bool X86RegisterInfo::hasReservedSpillSlot(const MachineFunction &MF,
   return false;
 }
 
-int
-X86RegisterInfo::getFrameIndexOffset(const MachineFunction &MF, int FI) const {
-  const TargetFrameInfo *TFI = MF.getTarget().getFrameInfo();
-  const MachineFrameInfo *MFI = MF.getFrameInfo();
-  int Offset = MFI->getObjectOffset(FI) - TFI->getOffsetOfLocalArea();
-  uint64_t StackSize = MFI->getStackSize();
-
-  if (needsStackRealignment(MF)) {
-    if (FI < 0) {
-      // Skip the saved EBP.
-      Offset += SlotSize;
-    } else {
-      unsigned Align = MFI->getObjectAlignment(FI);
-      assert((-(Offset + StackSize)) % Align == 0);
-      Align = 0;
-      return Offset + StackSize;
-    }
-    // FIXME: Support tail calls
-  } else {
-    if (!TFI->hasFP(MF))
-      return Offset + StackSize;
-
-    // Skip the saved EBP.
-    Offset += SlotSize;
-
-    // Skip the RETADDR move area
-    const X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
-    int TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
-    if (TailCallReturnAddrDelta < 0)
-      Offset -= TailCallReturnAddrDelta;
-  }
-
-  return Offset;
-}
-
 static unsigned getSUBriOpcode(unsigned is64Bit, int64_t Imm) {
   if (is64Bit) {
     if (isInt<8>(Imm))
@@ -631,7 +596,7 @@ X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
     const MachineFrameInfo *MFI = MF.getFrameInfo();
     FIOffset = MFI->getObjectOffset(FrameIndex) - TFI->getOffsetOfLocalArea();
   } else
-    FIOffset = getFrameIndexOffset(MF, FrameIndex);
+    FIOffset = TFI->getFrameIndexOffset(MF, FrameIndex);
 
   if (MI.getOperand(i+3).isImm()) {
     // Offset is a 32-bit integer.
@@ -694,22 +659,6 @@ unsigned X86RegisterInfo::getFrameRegister(const MachineFunction &MF) const {
   return TFI->hasFP(MF) ? FramePtr : StackPtr;
 }
 
-void
-X86RegisterInfo::getInitialFrameState(std::vector<MachineMove> &Moves) const {
-  // Calculate amount of bytes used for return address storing
-  int stackGrowth = (Is64Bit ? -8 : -4);
-
-  // Initial state of the frame pointer is esp+stackGrowth.
-  MachineLocation Dst(MachineLocation::VirtualFP);
-  MachineLocation Src(StackPtr, stackGrowth);
-  Moves.push_back(MachineMove(0, Dst, Src));
-
-  // Add return address to move list
-  MachineLocation CSDst(StackPtr, stackGrowth);
-  MachineLocation CSSrc(getRARegister());
-  Moves.push_back(MachineMove(0, CSDst, CSSrc));
-}
-
 unsigned X86RegisterInfo::getEHExceptionRegister() const {
   llvm_unreachable("What is the exception register");
   return 0;