src/gallium/drivers/radeon/R600RegisterInfo.h

   1 //===-- R600RegisterInfo.h - R600 Register Info Interface ------*- C++ -*--===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // Interface definition for R600RegisterInfo
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef R600REGISTERINFO_H_
  15 #define R600REGISTERINFO_H_
  16
  17 #include "AMDGPUTargetMachine.h"
  18 #include "AMDGPURegisterInfo.h"
  19
  20 namespace llvm {
  21
  22 class R600TargetMachine;
  23 class TargetInstrInfo;
  24
  25 struct R600RegisterInfo : public AMDGPURegisterInfo
  26 {
  27   AMDGPUTargetMachine &TM;
  28   const TargetInstrInfo &TII;
  29
  30   R600RegisterInfo(AMDGPUTargetMachine &tm, const TargetInstrInfo &tii);
  31
  32   virtual BitVector getReservedRegs(const MachineFunction &MF) const;
  33
  34   /// getISARegClass - rc is an AMDIL reg class.  This function returns the
  35   /// R600 reg class that is equivalent to the given AMDIL reg class.
  36   virtual const TargetRegisterClass * getISARegClass(
  37     const TargetRegisterClass * rc) const;
  38
  39   /// getHWRegIndex - get the HW encoding for a register.
  40   unsigned getHWRegIndex(unsigned reg) const;
  41
  42   /// getHWRegChan - get the HW encoding for a register's channel.
  43   unsigned getHWRegChan(unsigned reg) const;
  44
  45   /// getCFGStructurizerRegClass - get the register class of the specified
  46   /// type to use in the CFGStructurizer
  47   virtual const TargetRegisterClass * getCFGStructurizerRegClass(MVT VT) const;
  48
  49   /// getSubRegFromChannel - Return the sub reg enum value for the given
  50   /// Channel (e.g. getSubRegFromChannel(0) -> AMDGPU::sel_x)
  51   unsigned getSubRegFromChannel(unsigned Channel) const;
  52
  53 private:
  54   /// getHWRegIndexGen - Generated function returns a register's encoding
  55   unsigned getHWRegIndexGen(unsigned reg) const;
  56   /// getHWRegChanGen - Generated function returns a register's channel
  57   /// encoding.
  58   unsigned getHWRegChanGen(unsigned reg) const;
  59 };
  60
  61 } // End namespace llvm
  62
  63 #endif // AMDIDSAREGISTERINFO_H_