Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | pmbaty | 1 | //=- AnalysisBasedWarnings.h - Sema warnings based on libAnalysis -*- C++ -*-=// |
| 2 | // |
||
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
||
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
||
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
||
| 6 | // |
||
| 7 | //===----------------------------------------------------------------------===// |
||
| 8 | // |
||
| 9 | // This file defines AnalysisBasedWarnings, a worker object used by Sema |
||
| 10 | // that issues warnings based on dataflow-analysis. |
||
| 11 | //===----------------------------------------------------------------------===// |
||
| 12 | |||
| 13 | #ifndef LLVM_CLANG_SEMA_ANALYSISBASEDWARNINGS_H |
||
| 14 | #define LLVM_CLANG_SEMA_ANALYSISBASEDWARNINGS_H |
||
| 15 | |||
| 16 | #include "llvm/ADT/DenseMap.h" |
||
| 17 | #include <memory> |
||
| 18 | |||
| 19 | namespace clang { |
||
| 20 | |||
| 21 | class Decl; |
||
| 22 | class FunctionDecl; |
||
| 23 | class QualType; |
||
| 24 | class Sema; |
||
| 25 | namespace sema { |
||
| 26 | class FunctionScopeInfo; |
||
| 27 | } |
||
| 28 | |||
| 29 | namespace sema { |
||
| 30 | |||
| 31 | class AnalysisBasedWarnings { |
||
| 32 | public: |
||
| 33 | class Policy { |
||
| 34 | friend class AnalysisBasedWarnings; |
||
| 35 | // The warnings to run. |
||
| 36 | unsigned enableCheckFallThrough : 1; |
||
| 37 | unsigned enableCheckUnreachable : 1; |
||
| 38 | unsigned enableThreadSafetyAnalysis : 1; |
||
| 39 | unsigned enableConsumedAnalysis : 1; |
||
| 40 | public: |
||
| 41 | Policy(); |
||
| 42 | void disableCheckFallThrough() { enableCheckFallThrough = 0; } |
||
| 43 | }; |
||
| 44 | |||
| 45 | private: |
||
| 46 | Sema &S; |
||
| 47 | Policy DefaultPolicy; |
||
| 48 | |||
| 49 | class InterProceduralData; |
||
| 50 | std::unique_ptr<InterProceduralData> IPData; |
||
| 51 | |||
| 52 | enum VisitFlag { NotVisited = 0, Visited = 1, Pending = 2 }; |
||
| 53 | llvm::DenseMap<const FunctionDecl*, VisitFlag> VisitedFD; |
||
| 54 | |||
| 55 | /// \name Statistics |
||
| 56 | /// @{ |
||
| 57 | |||
| 58 | /// Number of function CFGs built and analyzed. |
||
| 59 | unsigned NumFunctionsAnalyzed; |
||
| 60 | |||
| 61 | /// Number of functions for which the CFG could not be successfully |
||
| 62 | /// built. |
||
| 63 | unsigned NumFunctionsWithBadCFGs; |
||
| 64 | |||
| 65 | /// Total number of blocks across all CFGs. |
||
| 66 | unsigned NumCFGBlocks; |
||
| 67 | |||
| 68 | /// Largest number of CFG blocks for a single function analyzed. |
||
| 69 | unsigned MaxCFGBlocksPerFunction; |
||
| 70 | |||
| 71 | /// Total number of CFGs with variables analyzed for uninitialized |
||
| 72 | /// uses. |
||
| 73 | unsigned NumUninitAnalysisFunctions; |
||
| 74 | |||
| 75 | /// Total number of variables analyzed for uninitialized uses. |
||
| 76 | unsigned NumUninitAnalysisVariables; |
||
| 77 | |||
| 78 | /// Max number of variables analyzed for uninitialized uses in a single |
||
| 79 | /// function. |
||
| 80 | unsigned MaxUninitAnalysisVariablesPerFunction; |
||
| 81 | |||
| 82 | /// Total number of block visits during uninitialized use analysis. |
||
| 83 | unsigned NumUninitAnalysisBlockVisits; |
||
| 84 | |||
| 85 | /// Max number of block visits during uninitialized use analysis of |
||
| 86 | /// a single function. |
||
| 87 | unsigned MaxUninitAnalysisBlockVisitsPerFunction; |
||
| 88 | |||
| 89 | /// @} |
||
| 90 | |||
| 91 | public: |
||
| 92 | AnalysisBasedWarnings(Sema &s); |
||
| 93 | ~AnalysisBasedWarnings(); |
||
| 94 | |||
| 95 | void IssueWarnings(Policy P, FunctionScopeInfo *fscope, |
||
| 96 | const Decl *D, QualType BlockType); |
||
| 97 | |||
| 98 | Policy getDefaultPolicy() { return DefaultPolicy; } |
||
| 99 | |||
| 100 | void PrintStats() const; |
||
| 101 | }; |
||
| 102 | |||
| 103 | } // namespace sema |
||
| 104 | } // namespace clang |
||
| 105 | |||
| 106 | #endif |