[X86][Haswell][SchedModel] Add architecture specific scheduling models.

[oota-llvm.git] / lib / Target / SystemZ / SystemZFrameLowering.h

diff --git a/lib/Target/SystemZ/SystemZFrameLowering.h b/lib/Target/SystemZ/SystemZFrameLowering.h
index 1284b6802b3a5190ab36110e2a791ae33e1f5fdf..cefa56fd74e5b79964bcc739c273da6ea73d4c7f 100644 (file)
--- a/lib/Target/SystemZ/SystemZFrameLowering.h
+++ b/lib/Target/SystemZ/SystemZFrameLowering.h
@@ -1,4 +1,4 @@
-//=- SystemZFrameLowering.h - Define frame lowering for z/System -*- C++ -*--=//
+//===-- SystemZFrameLowering.h - Frame lowering for SystemZ -----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,52 +6,59 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-//
-//
-//===----------------------------------------------------------------------===//
 
-#ifndef SYSTEMZ_FRAMEINFO_H
-#define SYSTEMZ_FRAMEINFO_H
+#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
+#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
 
-#include "SystemZ.h"
-#include "SystemZSubtarget.h"
-#include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/ADT/IndexedMap.h"
+#include "llvm/Target/TargetFrameLowering.h"
 
 namespace llvm {
-  class SystemZSubtarget;
+class SystemZTargetMachine;
+class SystemZSubtarget;
 
 class SystemZFrameLowering : public TargetFrameLowering {
   IndexedMap<unsigned> RegSpillOffsets;
-protected:
-  const SystemZSubtarget &STI;
 
 public:
-  explicit SystemZFrameLowering(const SystemZSubtarget &sti);
-
-  /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
-  /// the function.
-  void emitPrologue(MachineFunction &MF) const;
-  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+  SystemZFrameLowering();
 
+  // Override TargetFrameLowering.
+  bool isFPCloseToIncomingSP() const override { return false; }
+  const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const
+    override;
+  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
+                                            RegScavenger *RS) const override;
   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                 MachineBasicBlock::iterator MI,
+                                 MachineBasicBlock::iterator MBBI,
                                  const std::vector<CalleeSavedInfo> &CSI,
-                                 const TargetRegisterInfo *TRI) const;
+                                 const TargetRegisterInfo *TRI) const override;
   bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                   MachineBasicBlock::iterator MI,
+                                   MachineBasicBlock::iterator MBBII,
                                    const std::vector<CalleeSavedInfo> &CSI,
-                                   const TargetRegisterInfo *TRI) const;
+                                   const TargetRegisterInfo *TRI) const
+    override;
+  void processFunctionBeforeFrameFinalized(MachineFunction &MF,
+                                           RegScavenger *RS) const override;
+  void emitPrologue(MachineFunction &MF) const override;
+  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
+  bool hasFP(const MachineFunction &MF) const override;
+  int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
+  bool hasReservedCallFrame(const MachineFunction &MF) const override;
+  void eliminateCallFramePseudoInstr(MachineFunction &MF,
+                                     MachineBasicBlock &MBB,
+                                     MachineBasicBlock::iterator MI) const
+    override;
 
-  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
-                                            RegScavenger *RS) const;
+  // Return the number of bytes in the callee-allocated part of the frame.
+  uint64_t getAllocatedStackSize(const MachineFunction &MF) const;
 
-  bool hasReservedCallFrame(const MachineFunction &MF) const { return true; }
-  bool hasFP(const MachineFunction &MF) const;
-  int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+  // Return the byte offset from the incoming stack pointer of Reg's
+  // ABI-defined save slot.  Return 0 if no slot is defined for Reg.
+  unsigned getRegSpillOffset(unsigned Reg) const {
+    return RegSpillOffsets[Reg];
+  }
 };
-
-} // End llvm namespace
+} // end namespace llvm
 
 #endif