lib/Target/PTX/PTXMachineFunctionInfo.h

   1 //===- PTXMachineFuctionInfo.h - PTX machine function info -------*- 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 // This file declares PTX-specific per-machine-function information.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef PTX_MACHINE_FUNCTION_INFO_H
  15 #define PTX_MACHINE_FUNCTION_INFO_H
  16
  17 #include "PTX.h"
  18 #include "llvm/CodeGen/MachineFunction.h"
  19
  20 namespace llvm {
  21 /// PTXMachineFunctionInfo - This class is derived from MachineFunction and
  22 /// contains private PTX target-specific information for each MachineFunction.
  23 ///
  24 class PTXMachineFunctionInfo : public MachineFunctionInfo {
  25 private:
  26   bool is_kernel;
  27   std::vector<unsigned> reg_arg, reg_local_var;
  28   unsigned reg_ret;
  29   bool _isDoneAddArg;
  30
  31 public:
  32   PTXMachineFunctionInfo(MachineFunction &MF)
  33     : is_kernel(false), reg_ret(PTX::NoRegister), _isDoneAddArg(false) {
  34       reg_arg.reserve(8);
  35       reg_local_var.reserve(32);
  36     }
  37
  38   void setKernel(bool _is_kernel=true) { is_kernel = _is_kernel; }
  39
  40   void addArgReg(unsigned reg) { reg_arg.push_back(reg); }
  41   void addLocalVarReg(unsigned reg) { reg_local_var.push_back(reg); }
  42   void setRetReg(unsigned reg) { reg_ret = reg; }
  43
  44   void doneAddArg(void) {
  45     std::sort(reg_arg.begin(), reg_arg.end());
  46     _isDoneAddArg = true;
  47   }
  48   void doneAddLocalVar(void) {
  49     std::sort(reg_local_var.begin(), reg_local_var.end());
  50   }
  51
  52   bool isDoneAddArg(void) { return _isDoneAddArg; }
  53
  54   bool isKernel() const { return is_kernel; }
  55
  56   typedef std::vector<unsigned>::const_iterator         reg_iterator;
  57   typedef std::vector<unsigned>::const_reverse_iterator reg_reverse_iterator;
  58
  59   bool         argRegEmpty() const { return reg_arg.empty(); }
  60   int          getNumArg() const { return reg_arg.size(); }
  61   reg_iterator argRegBegin() const { return reg_arg.begin(); }
  62   reg_iterator argRegEnd()   const { return reg_arg.end(); }
  63   reg_reverse_iterator argRegReverseBegin() const { return reg_arg.rbegin(); }
  64   reg_reverse_iterator argRegReverseEnd() const { return reg_arg.rend(); }
  65
  66   bool         localVarRegEmpty() const { return reg_local_var.empty(); }
  67   reg_iterator localVarRegBegin() const { return reg_local_var.begin(); }
  68   reg_iterator localVarRegEnd()   const { return reg_local_var.end(); }
  69
  70   unsigned retReg() const { return reg_ret; }
  71
  72   bool isArgReg(unsigned reg) const {
  73     return std::binary_search(reg_arg.begin(), reg_arg.end(), reg);
  74   }
  75
  76   bool isLocalVarReg(unsigned reg) const {
  77     return std::binary_search(reg_local_var.begin(), reg_local_var.end(), reg);
  78   }
  79 }; // class PTXMachineFunctionInfo
  80 } // namespace llvm
  81
  82 #endif // PTX_MACHINE_FUNCTION_INFO_H