Mark some pattern-less instructions as neverHasSideEffects.

[oota-llvm.git] / lib / Target / ARM / ARMRegisterInfo.h

diff --git a/lib/Target/ARM/ARMRegisterInfo.h b/lib/Target/ARM/ARMRegisterInfo.h
index 0193093025f3547bb6cfd9b277516a48401d943e..f13c7d4acceb7ca3a3642aebafb8b0b4e58bd234 100644 (file)
--- a/lib/Target/ARM/ARMRegisterInfo.h
+++ b/lib/Target/ARM/ARMRegisterInfo.h
@@ -2,101 +2,41 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the "Instituto Nokia de Tecnologia" and
-// is distributed under the University of Illinois Open Source
+// This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
-// This file contains the ARM implementation of the MRegisterInfo class.
+// This file contains the ARM implementation of the TargetRegisterInfo class.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef ARMREGISTERINFO_H
 #define ARMREGISTERINFO_H
 
-#include "llvm/Target/MRegisterInfo.h"
-#include "ARMGenRegisterInfo.h.inc"
+#include "ARM.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+#include "ARMBaseRegisterInfo.h"
 
 namespace llvm {
   class ARMSubtarget;
-  class TargetInstrInfo;
+  class ARMBaseInstrInfo;
   class Type;
 
-struct ARMRegisterInfo : public ARMGenRegisterInfo {
-  const TargetInstrInfo &TII;
-  const ARMSubtarget &STI;
-private:
-  /// RS - An instance of the register scavenger.
-  RegScavenger *RS;
-
-  /// FramePtr - ARM physical register used as frame ptr.
-  unsigned FramePtr;
-
+namespace ARM {
+  /// SubregIndex - The index of various subregister classes. Note that 
+  /// these indices must be kept in sync with the class indices in the 
+  /// ARMRegisterInfo.td file.
+  enum SubregIndex {
+    SSUBREG_0 = 1, SSUBREG_1 = 2, SSUBREG_2 = 3, SSUBREG_3 = 4,
+    DSUBREG_0 = 5, DSUBREG_1 = 6, DSUBREG_2 = 7, DSUBREG_3 = 8,
+    QSUBREG_0 = 9, QSUBREG_1 = 10
+  };
+}
+
+struct ARMRegisterInfo : public ARMBaseRegisterInfo {
 public:
-  ARMRegisterInfo(const TargetInstrInfo &tii, const ARMSubtarget &STI);
-
-  ~ARMRegisterInfo();
-
-  /// getRegisterNumbering - Given the enum value for some register, e.g.
-  /// ARM::LR, return the number that it corresponds to (e.g. 14).
-  static unsigned getRegisterNumbering(unsigned RegEnum);
-
-  /// Code Generation virtual methods...
-  bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                 MachineBasicBlock::iterator MI,
-                                 const std::vector<CalleeSavedInfo> &CSI) const;
-
-  bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
-                                   MachineBasicBlock::iterator MI,
-                                 const std::vector<CalleeSavedInfo> &CSI) const;
-
-  void storeRegToStackSlot(MachineBasicBlock &MBB,
-                           MachineBasicBlock::iterator MBBI,
-                           unsigned SrcReg, int FrameIndex,
-                           const TargetRegisterClass *RC) const;
-
-  void loadRegFromStackSlot(MachineBasicBlock &MBB,
-                            MachineBasicBlock::iterator MBBI,
-                            unsigned DestReg, int FrameIndex,
-                            const TargetRegisterClass *RC) const;
-
-  void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
-                    unsigned DestReg, unsigned SrcReg,
-                    const TargetRegisterClass *RC) const;
-
-  MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
-                                  int FrameIndex) const;
-
-  const unsigned *getCalleeSavedRegs() const;
-
-  const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
-
-  BitVector getReservedRegs(const MachineFunction &MF) const;
-
-  bool requiresRegisterScavenging(const MachineFunction &MF) const;
-
-  bool hasFP(const MachineFunction &MF) const;
-
-  void eliminateCallFramePseudoInstr(MachineFunction &MF,
-                                     MachineBasicBlock &MBB,
-                                     MachineBasicBlock::iterator I) const;
-
-  void eliminateFrameIndex(MachineBasicBlock::iterator II,
-                           RegScavenger *RS = NULL) const;
-
-  void processFunctionBeforeCalleeSavedScan(MachineFunction &MF) const;
-
-  void emitPrologue(MachineFunction &MF) const;
-  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
-
-  // Debug information queries.
-  unsigned getRARegister() const;
-  unsigned getFrameRegister(MachineFunction &MF) const;
-
-  // Exception handling queries.
-  unsigned getEHExceptionRegister() const;
-  unsigned getEHHandlerRegister() const;
+  ARMRegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI);
 };
 
 } // end namespace llvm