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//===- PTXParamManager.h - Manager for .param variables ----------*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the PTXParamManager class, which manages all defined .param
// variables for a particular function.
//
//===----------------------------------------------------------------------===//
#ifndef PTX_PARAM_MANAGER_H
#define PTX_PARAM_MANAGER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
namespace llvm {
/// PTXParamManager - This class manages all .param variables defined for a
/// particular function.
class PTXParamManager {
private:
/// PTXParamType - Type of a .param variable
enum PTXParamType {
PTX_PARAM_TYPE_ARGUMENT,
PTX_PARAM_TYPE_RETURN,
PTX_PARAM_TYPE_LOCAL
};
/// PTXParam - Definition of a PTX .param variable
struct PTXParam {
PTXParamType Type;
unsigned Size;
std::string Name;
};
DenseMap<unsigned, PTXParam> AllParams;
SmallVector<unsigned, 4> ArgumentParams;
SmallVector<unsigned, 4> ReturnParams;
SmallVector<unsigned, 4> LocalParams;
public:
typedef SmallVector<unsigned, 4>::const_iterator param_iterator;
PTXParamManager();
param_iterator arg_begin() const { return ArgumentParams.begin(); }
param_iterator arg_end() const { return ArgumentParams.end(); }
param_iterator ret_begin() const { return ReturnParams.begin(); }
param_iterator ret_end() const { return ReturnParams.end(); }
param_iterator local_begin() const { return LocalParams.begin(); }
param_iterator local_end() const { return LocalParams.end(); }
/// addArgumentParam - Returns a new .param used as an argument.
unsigned addArgumentParam(unsigned Size);
/// addReturnParam - Returns a new .param used as a return argument.
unsigned addReturnParam(unsigned Size);
/// addLocalParam - Returns a new .param used as a local .param variable.
unsigned addLocalParam(unsigned Size);
/// getParamName - Returns the name of the parameter as a string.
const std::string &getParamName(unsigned Param) const {
assert(AllParams.count(Param) == 1 && "Param has not been defined!");
return AllParams.find(Param)->second.Name;
}
/// getParamSize - Returns the size of the parameter in bits.
unsigned getParamSize(unsigned Param) const {
assert(AllParams.count(Param) == 1 && "Param has not been defined!");
return AllParams.find(Param)->second.Size;
}
};
}
#endif
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