1 //===- AnalyzerOptions.h - Analysis Engine Options --------------*- 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 header defines various options for the static analyzer that are set
10 // by the frontend and are consulted throughout the analyzer.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H
15 #define LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H
16
17 #include "clang/Analysis/PathDiagnostic.h"
18 #include "clang/Basic/LLVM.h"
19 #include "llvm/ADT/IntrusiveRefCntPtr.h"
20 #include "llvm/ADT/StringMap.h"
21 #include "llvm/ADT/StringRef.h"
22 #include <string>
23 #include <utility>
24 #include <vector>
25
26 namespace clang {
27
28 namespace ento {
29
30 class CheckerBase;
31
32 } // namespace ento
33
34 /// AnalysisConstraints - Set of available constraint models.
35 enum AnalysisConstraints {
36 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) NAME##Model,
37 #include "clang/StaticAnalyzer/Core/Analyses.def"
38 NumConstraints
39 };
40
41 /// AnalysisDiagClients - Set of available diagnostic clients for rendering
42 /// analysis results.
43 enum AnalysisDiagClients {
44 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) PD_##NAME,
45 #include "clang/StaticAnalyzer/Core/Analyses.def"
46 PD_NONE,
47 NUM_ANALYSIS_DIAG_CLIENTS
48 };
49
50 /// AnalysisPurgeModes - Set of available strategies for dead symbol removal.
51 enum AnalysisPurgeMode {
52 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) NAME,
53 #include "clang/StaticAnalyzer/Core/Analyses.def"
54 NumPurgeModes
55 };
56
57 /// AnalysisInlineFunctionSelection - Set of inlining function selection heuristics.
58 enum AnalysisInliningMode {
59 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) NAME,
60 #include "clang/StaticAnalyzer/Core/Analyses.def"
61 NumInliningModes
62 };
63
64 /// Describes the different kinds of C++ member functions which can be
65 /// considered for inlining by the analyzer.
66 ///
67 /// These options are cumulative; enabling one kind of member function will
68 /// enable all kinds with lower enum values.
69 enum CXXInlineableMemberKind {
70 // Uninitialized = 0,
71
72 /// A dummy mode in which no C++ inlining is enabled.
73 CIMK_None,
74
75 /// Refers to regular member function and operator calls.
76 CIMK_MemberFunctions,
77
78 /// Refers to constructors (implicit or explicit).
79 ///
80 /// Note that a constructor will not be inlined if the corresponding
81 /// destructor is non-trivial.
82 CIMK_Constructors,
83
84 /// Refers to destructors (implicit or explicit).
85 CIMK_Destructors
86 };
87
88 /// Describes the different modes of inter-procedural analysis.
89 enum IPAKind {
90 /// Perform only intra-procedural analysis.
91 IPAK_None = 1,
92
93 /// Inline C functions and blocks when their definitions are available.
94 IPAK_BasicInlining = 2,
95
96 /// Inline callees(C, C++, ObjC) when their definitions are available.
97 IPAK_Inlining = 3,
98
99 /// Enable inlining of dynamically dispatched methods.
100 IPAK_DynamicDispatch = 4,
101
102 /// Enable inlining of dynamically dispatched methods, bifurcate paths when
103 /// exact type info is unavailable.
104 IPAK_DynamicDispatchBifurcate = 5
105 };
106
107 enum class ExplorationStrategyKind {
108 DFS,
109 BFS,
110 UnexploredFirst,
111 UnexploredFirstQueue,
112 UnexploredFirstLocationQueue,
113 BFSBlockDFSContents,
114 };
115
116 /// Describes the kinds for high-level analyzer mode.
117 enum UserModeKind {
118 /// Perform shallow but fast analyzes.
119 UMK_Shallow = 1,
120
121 /// Perform deep analyzes.
122 UMK_Deep = 2
123 };
124
125 enum class CTUPhase1InliningKind { None, Small, All };
126
127 /// Stores options for the analyzer from the command line.
128 ///
129 /// Some options are frontend flags (e.g.: -analyzer-output), but some are
130 /// analyzer configuration options, which are preceded by -analyzer-config
131 /// (e.g.: -analyzer-config notes-as-events=true).
132 ///
133 /// If you'd like to add a new frontend flag, add it to
134 /// include/clang/Driver/CC1Options.td, add a new field to store the value of
135 /// that flag in this class, and initialize it in
136 /// lib/Frontend/CompilerInvocation.cpp.
137 ///
138 /// If you'd like to add a new non-checker configuration, register it in
139 /// include/clang/StaticAnalyzer/Core/AnalyzerOptions.def, and refer to the
140 /// top of the file for documentation.
141 ///
142 /// If you'd like to add a new checker option, call getChecker*Option()
143 /// whenever.
144 ///
145 /// Some of the options are controlled by raw frontend flags for no good reason,
146 /// and should be eventually converted into -analyzer-config flags. New analyzer
147 /// options should not be implemented as frontend flags. Frontend flags still
148 /// make sense for things that do not affect the actual analysis.
149 class AnalyzerOptions : public RefCountedBase<AnalyzerOptions> {
150 public:
151 using ConfigTable = llvm::StringMap<std::string>;
152
153 /// Retrieves the list of checkers generated from Checkers.td. This doesn't
154 /// contain statically linked but non-generated checkers and plugin checkers!
155 static std::vector<StringRef>
156 getRegisteredCheckers(bool IncludeExperimental = false);
157
158 /// Retrieves the list of packages generated from Checkers.td. This doesn't
159 /// contain statically linked but non-generated packages and plugin packages!
160 static std::vector<StringRef>
161 getRegisteredPackages(bool IncludeExperimental = false);
162
163 /// Convenience function for printing options or checkers and their
164 /// description in a formatted manner. If \p MinLineWidth is set to 0, no line
165 /// breaks are introduced for the description.
166 ///
167 /// Format, depending whether the option name's length is less than
168 /// \p EntryWidth:
169 ///
170 /// <padding>EntryName<padding>Description
171 /// <---------padding--------->Description
172 /// <---------padding--------->Description
173 ///
174 /// <padding>VeryVeryLongEntryName
175 /// <---------padding--------->Description
176 /// <---------padding--------->Description
177 /// ^~~~~~~~~InitialPad
178 /// ^~~~~~~~~~~~~~~~~~EntryWidth
179 /// ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~MinLineWidth
180 static void printFormattedEntry(llvm::raw_ostream &Out,
181 std::pair<StringRef, StringRef> EntryDescPair,
182 size_t InitialPad, size_t EntryWidth,
183 size_t MinLineWidth = 0);
184
185 /// Pairs of checker/package name and enable/disable.
186 std::vector<std::pair<std::string, bool>> CheckersAndPackages;
187
188 /// Vector of checker/package names which will not emit warnings.
189 std::vector<std::string> SilencedCheckersAndPackages;
190
191 /// A key-value table of use-specified configuration values.
192 // TODO: This shouldn't be public.
193 ConfigTable Config;
194 AnalysisConstraints AnalysisConstraintsOpt = RangeConstraintsModel;
195 AnalysisDiagClients AnalysisDiagOpt = PD_HTML;
196 AnalysisPurgeMode AnalysisPurgeOpt = PurgeStmt;
197
198 std::string AnalyzeSpecificFunction;
199
200 /// File path to which the exploded graph should be dumped.
201 std::string DumpExplodedGraphTo;
202
203 /// Store full compiler invocation for reproducible instructions in the
204 /// generated report.
205 std::string FullCompilerInvocation;
206
207 /// The maximum number of times the analyzer visits a block.
208 unsigned maxBlockVisitOnPath;
209
210 /// Disable all analyzer checkers.
211 ///
212 /// This flag allows one to disable analyzer checkers on the code processed by
213 /// the given analysis consumer. Note, the code will get parsed and the
214 /// command-line options will get checked.
215 unsigned DisableAllCheckers : 1;
216
217 unsigned ShowCheckerHelp : 1;
218 unsigned ShowCheckerHelpAlpha : 1;
219 unsigned ShowCheckerHelpDeveloper : 1;
220
221 unsigned ShowCheckerOptionList : 1;
222 unsigned ShowCheckerOptionAlphaList : 1;
223 unsigned ShowCheckerOptionDeveloperList : 1;
224
225 unsigned ShowEnabledCheckerList : 1;
226 unsigned ShowConfigOptionsList : 1;
227 unsigned ShouldEmitErrorsOnInvalidConfigValue : 1;
228 unsigned AnalyzeAll : 1;
229 unsigned AnalyzerDisplayProgress : 1;
230
231 unsigned eagerlyAssumeBinOpBifurcation : 1;
232
233 unsigned TrimGraph : 1;
234 unsigned visualizeExplodedGraphWithGraphViz : 1;
235 unsigned UnoptimizedCFG : 1;
236 unsigned PrintStats : 1;
237
238 /// Do not re-analyze paths leading to exhausted nodes with a different
239 /// strategy. We get better code coverage when retry is enabled.
240 unsigned NoRetryExhausted : 1;
241
242 /// Emit analyzer warnings as errors.
243 bool AnalyzerWerror : 1;
244
245 /// The inlining stack depth limit.
246 unsigned InlineMaxStackDepth;
247
248 /// The mode of function selection used during inlining.
249 AnalysisInliningMode InliningMode = NoRedundancy;
250
251 // Create a field for each -analyzer-config option.
252 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
253 SHALLOW_VAL, DEEP_VAL) \
254 ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, SHALLOW_VAL)
255
256 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
257 TYPE NAME;
258
259 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
260 #undef ANALYZER_OPTION
261 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
262
263 // Create an array of all -analyzer-config command line options. Sort it in
264 // the constructor.
265 std::vector<llvm::StringLiteral> AnalyzerConfigCmdFlags = {
266 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
267 SHALLOW_VAL, DEEP_VAL) \
268 ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, SHALLOW_VAL)
269
270 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
271 llvm::StringLiteral(CMDFLAG),
272
273 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
274 #undef ANALYZER_OPTION
275 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
276 };
277
isUnknownAnalyzerConfig(StringRef Name)278 bool isUnknownAnalyzerConfig(StringRef Name) const {
279 assert(llvm::is_sorted(AnalyzerConfigCmdFlags));
280
281 return !std::binary_search(AnalyzerConfigCmdFlags.begin(),
282 AnalyzerConfigCmdFlags.end(), Name);
283 }
284
AnalyzerOptions()285 AnalyzerOptions()
286 : DisableAllCheckers(false), ShowCheckerHelp(false),
287 ShowCheckerHelpAlpha(false), ShowCheckerHelpDeveloper(false),
288 ShowCheckerOptionList(false), ShowCheckerOptionAlphaList(false),
289 ShowCheckerOptionDeveloperList(false), ShowEnabledCheckerList(false),
290 ShowConfigOptionsList(false),
291 ShouldEmitErrorsOnInvalidConfigValue(false), AnalyzeAll(false),
292 AnalyzerDisplayProgress(false), eagerlyAssumeBinOpBifurcation(false),
293 TrimGraph(false), visualizeExplodedGraphWithGraphViz(false),
294 UnoptimizedCFG(false), PrintStats(false), NoRetryExhausted(false),
295 AnalyzerWerror(false) {
296 llvm::sort(AnalyzerConfigCmdFlags);
297 }
298
299 /// Interprets an option's string value as a boolean. The "true" string is
300 /// interpreted as true and the "false" string is interpreted as false.
301 ///
302 /// If an option value is not provided, returns the given \p DefaultVal.
303 /// @param [in] CheckerName The *full name* of the checker. One may retrieve
304 /// this from the checker object's field \c Name, or through \c
305 /// CheckerManager::getCurrentCheckerName within the checker's registry
306 /// function.
307 /// Checker options are retrieved in the following format:
308 /// `-analyzer-config CheckerName:OptionName=Value.
309 /// @param [in] OptionName Name for option to retrieve.
310 /// @param [in] SearchInParents If set to true and the searched option was not
311 /// specified for the given checker the options for the parent packages will
312 /// be searched as well. The inner packages take precedence over the outer
313 /// ones.
314 bool getCheckerBooleanOption(StringRef CheckerName, StringRef OptionName,
315 bool SearchInParents = false) const;
316
317 bool getCheckerBooleanOption(const ento::CheckerBase *C, StringRef OptionName,
318 bool SearchInParents = false) const;
319
320 /// Interprets an option's string value as an integer value.
321 ///
322 /// If an option value is not provided, returns the given \p DefaultVal.
323 /// @param [in] CheckerName The *full name* of the checker. One may retrieve
324 /// this from the checker object's field \c Name, or through \c
325 /// CheckerManager::getCurrentCheckerName within the checker's registry
326 /// function.
327 /// Checker options are retrieved in the following format:
328 /// `-analyzer-config CheckerName:OptionName=Value.
329 /// @param [in] OptionName Name for option to retrieve.
330 /// @param [in] SearchInParents If set to true and the searched option was not
331 /// specified for the given checker the options for the parent packages will
332 /// be searched as well. The inner packages take precedence over the outer
333 /// ones.
334 int getCheckerIntegerOption(StringRef CheckerName, StringRef OptionName,
335 bool SearchInParents = false) const;
336
337 int getCheckerIntegerOption(const ento::CheckerBase *C, StringRef OptionName,
338 bool SearchInParents = false) const;
339
340 /// Query an option's string value.
341 ///
342 /// If an option value is not provided, returns the given \p DefaultVal.
343 /// @param [in] CheckerName The *full name* of the checker. One may retrieve
344 /// this from the checker object's field \c Name, or through \c
345 /// CheckerManager::getCurrentCheckerName within the checker's registry
346 /// function.
347 /// Checker options are retrieved in the following format:
348 /// `-analyzer-config CheckerName:OptionName=Value.
349 /// @param [in] OptionName Name for option to retrieve.
350 /// @param [in] SearchInParents If set to true and the searched option was not
351 /// specified for the given checker the options for the parent packages will
352 /// be searched as well. The inner packages take precedence over the outer
353 /// ones.
354 StringRef getCheckerStringOption(StringRef CheckerName, StringRef OptionName,
355 bool SearchInParents = false) const;
356
357 StringRef getCheckerStringOption(const ento::CheckerBase *C,
358 StringRef OptionName,
359 bool SearchInParents = false) const;
360
361 ExplorationStrategyKind getExplorationStrategy() const;
362 CTUPhase1InliningKind getCTUPhase1Inlining() const;
363
364 /// Returns the inter-procedural analysis mode.
365 IPAKind getIPAMode() const;
366
367 /// Returns the option controlling which C++ member functions will be
368 /// considered for inlining.
369 ///
370 /// This is controlled by the 'c++-inlining' config option.
371 ///
372 /// \sa CXXMemberInliningMode
373 bool mayInlineCXXMemberFunction(CXXInlineableMemberKind K) const;
374
getDiagOpts()375 ento::PathDiagnosticConsumerOptions getDiagOpts() const {
376 return {FullCompilerInvocation,
377 ShouldDisplayMacroExpansions,
378 ShouldSerializeStats,
379 // The stable report filename option is deprecated because
380 // file names are now always stable. Now the old option acts as
381 // an alias to the new verbose filename option because this
382 // closely mimics the behavior under the old option.
383 ShouldWriteStableReportFilename || ShouldWriteVerboseReportFilename,
384 AnalyzerWerror,
385 ShouldApplyFixIts,
386 ShouldDisplayCheckerNameForText};
387 }
388 };
389
390 using AnalyzerOptionsRef = IntrusiveRefCntPtr<AnalyzerOptions>;
391
392 //===----------------------------------------------------------------------===//
393 // We'll use AnalyzerOptions in the frontend, but we can't link the frontend
394 // with clangStaticAnalyzerCore, because clangStaticAnalyzerCore depends on
395 // clangFrontend.
396 //
397 // For this reason, implement some methods in this header file.
398 //===----------------------------------------------------------------------===//
399
400 inline std::vector<StringRef>
getRegisteredCheckers(bool IncludeExperimental)401 AnalyzerOptions::getRegisteredCheckers(bool IncludeExperimental) {
402 static constexpr llvm::StringLiteral StaticAnalyzerCheckerNames[] = {
403 #define GET_CHECKERS
404 #define CHECKER(FULLNAME, CLASS, HELPTEXT, DOC_URI, IS_HIDDEN) \
405 llvm::StringLiteral(FULLNAME),
406 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
407 #undef CHECKER
408 #undef GET_CHECKERS
409 };
410 std::vector<StringRef> Checkers;
411 for (StringRef CheckerName : StaticAnalyzerCheckerNames) {
412 if (!CheckerName.startswith("debug.") &&
413 (IncludeExperimental || !CheckerName.startswith("alpha.")))
414 Checkers.push_back(CheckerName);
415 }
416 return Checkers;
417 }
418
419 inline std::vector<StringRef>
getRegisteredPackages(bool IncludeExperimental)420 AnalyzerOptions::getRegisteredPackages(bool IncludeExperimental) {
421 static constexpr llvm::StringLiteral StaticAnalyzerPackageNames[] = {
422 #define GET_PACKAGES
423 #define PACKAGE(FULLNAME) llvm::StringLiteral(FULLNAME),
424 #include "clang/StaticAnalyzer/Checkers/Checkers.inc"
425 #undef PACKAGE
426 #undef GET_PACKAGES
427 };
428 std::vector<StringRef> Packages;
429 for (StringRef PackageName : StaticAnalyzerPackageNames) {
430 if (PackageName != "debug" &&
431 (IncludeExperimental || PackageName != "alpha"))
432 Packages.push_back(PackageName);
433 }
434 return Packages;
435 }
436
437 } // namespace clang
438
439 #endif // LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H
440