BranchIslandFactory.h revision 533eae20118036f425f27bf0536ef0ccbb090b65 
1//===- BranchIslandFactory.h ----------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#ifndef MCLD_LD_BRANCHISLANDFACTORY_H
10#define MCLD_LD_BRANCHISLANDFACTORY_H
11
12#include <llvm/Support/DataTypes.h>
13#include <mcld/Support/GCFactory.h>
14#include <mcld/LD/BranchIsland.h>
15
16namespace mcld
17{
18
19class Fragment;
20class Module;
21
22/** \class BranchIslandFactory
23 *  \brief
24 *
25 */
26class BranchIslandFactory : public GCFactory<BranchIsland, 0>
27{
28public:
29  /// ctor
30  /// @param pMaxBranchRange - the max branch range of the target backend
31  /// @param pMaxIslandSize - a predifned value (64KB here) to decide the max
32  ///                         size of the island
33  BranchIslandFactory(uint64_t pMaxBranchRange,
34                      uint64_t pMaxIslandSize = 65536U);
35
36  ~BranchIslandFactory();
37
38  /// group - group fragments and create islands when needed
39  /// @param pSectionData - the SectionData holds fragments need to be grouped
40  void group(Module& pModule);
41
42  /// produce - produce a island for the given fragment
43  /// @param pFragment - the fragment needs a branch island
44  BranchIsland* produce(Fragment& pFragment);
45
46  /// find - find a island for the given fragment
47  /// @param pFragment - the fragment needs a branch isladn
48  BranchIsland* find(const Fragment& pFragment);
49
50private:
51  uint64_t m_MaxBranchRange;
52  uint64_t m_MaxIslandSize;
53};
54
55} // namespace of mcld
56
57#endif
58
59