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/ADT/DenseSet.h"
  19 #include "llvm/CodeGen/MachineFunction.h"
  20
  21 namespace llvm {
  22 /// PTXMachineFunctionInfo - This class is derived from MachineFunction and
  23 /// contains private PTX target-specific information for each MachineFunction.
  24 ///
  25 class PTXMachineFunctionInfo : public MachineFunctionInfo {
  26 private:
  27   bool is_kernel;
  28   std::vector<unsigned> reg_arg, reg_local_var;
  29   std::vector<unsigned> reg_ret;
  30   bool _isDoneAddArg;
  31
  32 public:
  33   PTXMachineFunctionInfo(MachineFunction &MF)
  34     : is_kernel(false), reg_ret(PTX::NoRegister), _isDoneAddArg(false) {
  35       reg_arg.reserve(8);
  36       reg_local_var.reserve(32);
  37     }
  38
  39   void setKernel(bool _is_kernel=true) { is_kernel = _is_kernel; }
  40
  41   void addArgReg(unsigned reg) { reg_arg.push_back(reg); }
  42   void addLocalVarReg(unsigned reg) { reg_local_var.push_back(reg); }
  43   void addRetReg(unsigned reg) {
  44     if (!isRetReg(reg)) {
  45       reg_ret.push_back(reg);
  46     }
  47   }
  48
  49   void doneAddArg(void) {
  50     _isDoneAddArg = true;
  51   }
  52   void doneAddLocalVar(void) {}
  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   typedef std::vector<unsigned>::const_iterator         ret_iterator;
  59
  60   bool         argRegEmpty() const { return reg_arg.empty(); }
  61   int          getNumArg() const { return reg_arg.size(); }
  62   reg_iterator argRegBegin() const { return reg_arg.begin(); }
  63   reg_iterator argRegEnd()   const { return reg_arg.end(); }
  64   reg_reverse_iterator argRegReverseBegin() const { return reg_arg.rbegin(); }
  65   reg_reverse_iterator argRegReverseEnd() const { return reg_arg.rend(); }
  66
  67   bool         localVarRegEmpty() const { return reg_local_var.empty(); }
  68   reg_iterator localVarRegBegin() const { return reg_local_var.begin(); }
  69   reg_iterator localVarRegEnd()   const { return reg_local_var.end(); }
  70
  71   bool         retRegEmpty() const { return reg_ret.empty(); }
  72   int          getNumRet() const { return reg_ret.size(); }
  73   ret_iterator retRegBegin() const { return reg_ret.begin(); }
  74   ret_iterator retRegEnd()   const { return reg_ret.end(); }
  75
  76   bool isArgReg(unsigned reg) const {
  77     return std::find(reg_arg.begin(), reg_arg.end(), reg) != reg_arg.end();
  78   }
  79
  80   bool isRetReg(unsigned reg) const {
  81     return std::find(reg_ret.begin(), reg_ret.end(), reg) != reg_ret.end();
  82   }
  83
  84   bool isLocalVarReg(unsigned reg) const {
  85     return std::find(reg_local_var.begin(), reg_local_var.end(), reg)
  86       != reg_local_var.end();
  87   }
  88 }; // class PTXMachineFunctionInfo
  89 } // namespace llvm
  90
  91 #endif // PTX_MACHINE_FUNCTION_INFO_H