PTXMachineFunctionInfo.h revision e0aef2de81c670f3e4229b979e81178860a458cb 
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
21namespace llvm {
22/// PTXMachineFunctionInfo - This class is derived from MachineFunction and
23/// contains private PTX target-specific information for each MachineFunction.
24///
25class PTXMachineFunctionInfo : public MachineFunctionInfo {
26private:
27  bool is_kernel;
28  std::vector<unsigned> reg_arg, reg_local_var;
29  DenseSet<unsigned> reg_ret;
30  bool _isDoneAddArg;
31
32public:
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) { reg_ret.insert(reg); }
44
45  void doneAddArg(void) {
46    _isDoneAddArg = true;
47  }
48  void doneAddLocalVar(void) {}
49
50  bool isKernel() const { return is_kernel; }
51
52  typedef std::vector<unsigned>::const_iterator         reg_iterator;
53  typedef std::vector<unsigned>::const_reverse_iterator reg_reverse_iterator;
54  typedef DenseSet<unsigned>::const_iterator            ret_iterator;
55
56  bool         argRegEmpty() const { return reg_arg.empty(); }
57  int          getNumArg() const { return reg_arg.size(); }
58  reg_iterator argRegBegin() const { return reg_arg.begin(); }
59  reg_iterator argRegEnd()   const { return reg_arg.end(); }
60  reg_reverse_iterator argRegReverseBegin() const { return reg_arg.rbegin(); }
61  reg_reverse_iterator argRegReverseEnd() const { return reg_arg.rend(); }
62
63  bool         localVarRegEmpty() const { return reg_local_var.empty(); }
64  reg_iterator localVarRegBegin() const { return reg_local_var.begin(); }
65  reg_iterator localVarRegEnd()   const { return reg_local_var.end(); }
66
67  bool         retRegEmpty() const { return reg_ret.empty(); }
68  int          getNumRet() const { return reg_ret.size(); }
69  ret_iterator retRegBegin() const { return reg_ret.begin(); }
70  ret_iterator retRegEnd()   const { return reg_ret.end(); }
71
72  bool isArgReg(unsigned reg) const {
73    return std::find(reg_arg.begin(), reg_arg.end(), reg) != reg_arg.end();
74  }
75
76  bool isRetReg(unsigned reg) const {
77    return std::find(reg_ret.begin(), reg_ret.end(), reg) != reg_ret.end();
78  }
79
80  bool isLocalVarReg(unsigned reg) const {
81    return std::find(reg_local_var.begin(), reg_local_var.end(), reg)
82      != reg_local_var.end();
83  }
84}; // class PTXMachineFunctionInfo
85} // namespace llvm
86
87#endif // PTX_MACHINE_FUNCTION_INFO_H
88