1 files changed, 66 insertions, 0 deletions
diff --git a/lib/Target/X86/X86FrameLowering.h b/lib/Target/X86/X86FrameLowering.h
new file mode 100644
index 0000000000..c067e64fc0
--- /dev/null
+++ b/lib/Target/X86/X86FrameLowering.h
@@ -0,0 +1,66 @@
+//=-- X86TargetFrameLowering.h - Define frame lowering for X86 ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class implements X86-specific bits of TargetFrameLowering class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef X86_FRAMELOWERING_H
+#define X86_FRAMELOWERING_H
+
+#include "X86Subtarget.h"
+#include "llvm/Target/TargetFrameLowering.h"
+
+namespace llvm {
+  class MCSymbol;
+  class X86TargetMachine;
+
+class X86FrameLowering : public TargetFrameLowering {
+  const X86TargetMachine &TM;
+  const X86Subtarget &STI;
+public:
+  explicit X86FrameLowering(const X86TargetMachine &tm, const X86Subtarget &sti)
+    : TargetFrameLowering(StackGrowsDown,
+                          sti.getStackAlignment(),
+                          (sti.isTargetWin64() ? -40 :
+                           (sti.is64Bit() ? -8 : -4))),
+      TM(tm), STI(sti) {
+  }
+
+  void emitCalleeSavedFrameMoves(MachineFunction &MF, MCSymbol *Label,
+                                 unsigned FramePtr) const;
+
+  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
+  /// the function.
+  void emitPrologue(MachineFunction &MF) const;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+
+  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
+                                            RegScavenger *RS = NULL) const;
+
+  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                 MachineBasicBlock::iterator MI,
+                                 const std::vector<CalleeSavedInfo> &CSI,
+                                 const TargetRegisterInfo *TRI) const;
+
+  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
+                                   MachineBasicBlock::iterator MI,
+                                   const std::vector<CalleeSavedInfo> &CSI,
+                                   const TargetRegisterInfo *TRI) const;
+
+  bool hasFP(const MachineFunction &MF) const;
+  bool hasReservedCallFrame(const MachineFunction &MF) const;
+
+  void getInitialFrameState(std::vector<MachineMove> &Moves) const;
+  int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+};
+
+} // End llvm namespace
+
+#endif