1 | //===-- llvm-lto2: test harness for the resolution-based LTO interface ----===// |
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 program takes in a list of bitcode files, links them and performs |
10 | // link-time optimization according to the provided symbol resolutions using the |
11 | // resolution-based LTO interface, and outputs one or more object files. |
12 | // |
13 | // This program is intended to eventually replace llvm-lto which uses the legacy |
14 | // LTO interface. |
15 | // |
16 | //===----------------------------------------------------------------------===// |
17 | |
18 | #include "llvm/Bitcode/BitcodeReader.h" |
19 | #include "llvm/CodeGen/CommandFlags.h" |
20 | #include "llvm/IR/DiagnosticPrinter.h" |
21 | #include "llvm/LTO/LTO.h" |
22 | #include "llvm/Passes/PassPlugin.h" |
23 | #include "llvm/Remarks/HotnessThresholdParser.h" |
24 | #include "llvm/Support/Caching.h" |
25 | #include "llvm/Support/CommandLine.h" |
26 | #include "llvm/Support/FileSystem.h" |
27 | #include "llvm/Support/InitLLVM.h" |
28 | #include "llvm/Support/PluginLoader.h" |
29 | #include "llvm/Support/TargetSelect.h" |
30 | #include "llvm/Support/Threading.h" |
31 | #include <atomic> |
32 | |
33 | using namespace llvm; |
34 | using namespace lto; |
35 | |
36 | static codegen::RegisterCodeGenFlags CGF; |
37 | |
38 | static cl::opt<char> |
39 | OptLevel("O" , |
40 | cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] " |
41 | "(default = '-O2')" ), |
42 | cl::Prefix, cl::init(Val: '2')); |
43 | |
44 | static cl::opt<char> CGOptLevel( |
45 | "cg-opt-level" , |
46 | cl::desc("Codegen optimization level (0, 1, 2 or 3, default = '2')" ), |
47 | cl::init(Val: '2')); |
48 | |
49 | static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore, |
50 | cl::desc("<input bitcode files>" )); |
51 | |
52 | static cl::opt<std::string> OutputFilename("o" , cl::Required, |
53 | cl::desc("Output filename" ), |
54 | cl::value_desc("filename" )); |
55 | |
56 | static cl::opt<std::string> CacheDir("cache-dir" , cl::desc("Cache Directory" ), |
57 | cl::value_desc("directory" )); |
58 | |
59 | static cl::opt<std::string> OptPipeline("opt-pipeline" , |
60 | cl::desc("Optimizer Pipeline" ), |
61 | cl::value_desc("pipeline" )); |
62 | |
63 | static cl::opt<std::string> AAPipeline("aa-pipeline" , |
64 | cl::desc("Alias Analysis Pipeline" ), |
65 | cl::value_desc("aapipeline" )); |
66 | |
67 | static cl::opt<bool> SaveTemps("save-temps" , cl::desc("Save temporary files" )); |
68 | |
69 | static cl::list<std::string> SelectSaveTemps( |
70 | "select-save-temps" , |
71 | cl::value_desc("One, or multiple of: " |
72 | "resolution,preopt,promote,internalize,import,opt,precodegen" |
73 | ",combinedindex" ), |
74 | cl::desc("Save selected temporary files. Cannot be specified together with " |
75 | "-save-temps" ), |
76 | cl::CommaSeparated); |
77 | |
78 | constexpr const char *SaveTempsValues[] = { |
79 | "resolution" , "preopt" , "promote" , "internalize" , |
80 | "import" , "opt" , "precodegen" , "combinedindex" }; |
81 | |
82 | static cl::opt<bool> |
83 | ThinLTODistributedIndexes("thinlto-distributed-indexes" , |
84 | cl::desc("Write out individual index and " |
85 | "import files for the " |
86 | "distributed backend case" )); |
87 | |
88 | static cl::opt<bool> |
89 | ThinLTOEmitIndexes("thinlto-emit-indexes" , |
90 | cl::desc("Write out individual index files via " |
91 | "InProcessThinLTO" )); |
92 | |
93 | static cl::opt<bool> |
94 | ThinLTOEmitImports("thinlto-emit-imports" , |
95 | cl::desc("Write out individual imports files via " |
96 | "InProcessThinLTO. Has no effect unless " |
97 | "specified with -thinlto-emit-indexes or " |
98 | "-thinlto-distributed-indexes" )); |
99 | |
100 | // Default to using all available threads in the system, but using only one |
101 | // thread per core (no SMT). |
102 | // Use -thinlto-threads=all to use hardware_concurrency() instead, which means |
103 | // to use all hardware threads or cores in the system. |
104 | static cl::opt<std::string> Threads("thinlto-threads" ); |
105 | |
106 | static cl::list<std::string> SymbolResolutions( |
107 | "r" , |
108 | cl::desc("Specify a symbol resolution: filename,symbolname,resolution\n" |
109 | "where \"resolution\" is a sequence (which may be empty) of the\n" |
110 | "following characters:\n" |
111 | " p - prevailing: the linker has chosen this definition of the\n" |
112 | " symbol\n" |
113 | " l - local: the definition of this symbol is unpreemptable at\n" |
114 | " runtime and is known to be in this linkage unit\n" |
115 | " x - externally visible: the definition of this symbol is\n" |
116 | " visible outside of the LTO unit\n" |
117 | "A resolution for each symbol must be specified" )); |
118 | |
119 | static cl::opt<std::string> OverrideTriple( |
120 | "override-triple" , |
121 | cl::desc("Replace target triples in input files with this triple" )); |
122 | |
123 | static cl::opt<std::string> DefaultTriple( |
124 | "default-triple" , |
125 | cl::desc( |
126 | "Replace unspecified target triples in input files with this triple" )); |
127 | |
128 | static cl::opt<bool> ( |
129 | "pass-remarks-with-hotness" , |
130 | cl::desc("With PGO, include profile count in optimization remarks" ), |
131 | cl::Hidden); |
132 | |
133 | cl::opt<std::optional<uint64_t>, false, remarks::HotnessThresholdParser> |
134 | ( |
135 | "pass-remarks-hotness-threshold" , |
136 | cl::desc("Minimum profile count required for an " |
137 | "optimization remark to be output." |
138 | " Use 'auto' to apply the threshold from profile summary." ), |
139 | cl::value_desc("uint or 'auto'" ), cl::init(Val: 0), cl::Hidden); |
140 | |
141 | static cl::opt<std::string> |
142 | ("pass-remarks-output" , |
143 | cl::desc("Output filename for pass remarks" ), |
144 | cl::value_desc("filename" )); |
145 | |
146 | static cl::opt<std::string> |
147 | ("pass-remarks-filter" , |
148 | cl::desc("Only record optimization remarks from passes whose " |
149 | "names match the given regular expression" ), |
150 | cl::value_desc("regex" )); |
151 | |
152 | static cl::opt<std::string> ( |
153 | "pass-remarks-format" , |
154 | cl::desc("The format used for serializing remarks (default: YAML)" ), |
155 | cl::value_desc("format" ), cl::init(Val: "yaml" )); |
156 | |
157 | static cl::opt<std::string> |
158 | SamplePGOFile("lto-sample-profile-file" , |
159 | cl::desc("Specify a SamplePGO profile file" )); |
160 | |
161 | static cl::opt<std::string> |
162 | CSPGOFile("lto-cspgo-profile-file" , |
163 | cl::desc("Specify a context sensitive PGO profile file" )); |
164 | |
165 | static cl::opt<bool> |
166 | RunCSIRInstr("lto-cspgo-gen" , |
167 | cl::desc("Run PGO context sensitive IR instrumentation" ), |
168 | cl::Hidden); |
169 | |
170 | static cl::opt<bool> |
171 | DebugPassManager("debug-pass-manager" , cl::Hidden, |
172 | cl::desc("Print pass management debugging information" )); |
173 | |
174 | static cl::opt<std::string> |
175 | StatsFile("stats-file" , cl::desc("Filename to write statistics to" )); |
176 | |
177 | static cl::list<std::string> |
178 | PassPlugins("load-pass-plugin" , |
179 | cl::desc("Load passes from plugin library" )); |
180 | |
181 | static cl::opt<std::string> UnifiedLTOMode("unified-lto" , cl::Optional, |
182 | cl::desc("Set LTO mode" ), |
183 | cl::value_desc("mode" )); |
184 | |
185 | static cl::opt<bool> EnableFreestanding( |
186 | "lto-freestanding" , |
187 | cl::desc("Enable Freestanding (disable builtins / TLI) during LTO" ), |
188 | cl::Hidden); |
189 | |
190 | static cl::opt<bool> TryUseNewDbgInfoFormat( |
191 | "try-experimental-debuginfo-iterators" , |
192 | cl::desc("Enable debuginfo iterator positions, if they're built in" ), |
193 | cl::init(Val: false), cl::Hidden); |
194 | |
195 | extern cl::opt<bool> UseNewDbgInfoFormat; |
196 | extern cl::opt<cl::boolOrDefault> LoadBitcodeIntoNewDbgInfoFormat; |
197 | extern cl::opt<cl::boolOrDefault> PreserveInputDbgFormat; |
198 | |
199 | static void check(Error E, std::string Msg) { |
200 | if (!E) |
201 | return; |
202 | handleAllErrors(E: std::move(E), Handlers: [&](ErrorInfoBase &EIB) { |
203 | errs() << "llvm-lto2: " << Msg << ": " << EIB.message().c_str() << '\n'; |
204 | }); |
205 | exit(status: 1); |
206 | } |
207 | |
208 | template <typename T> static T check(Expected<T> E, std::string Msg) { |
209 | if (E) |
210 | return std::move(*E); |
211 | check(E.takeError(), Msg); |
212 | return T(); |
213 | } |
214 | |
215 | static void check(std::error_code EC, std::string Msg) { |
216 | check(E: errorCodeToError(EC), Msg); |
217 | } |
218 | |
219 | template <typename T> static T check(ErrorOr<T> E, std::string Msg) { |
220 | if (E) |
221 | return std::move(*E); |
222 | check(E.getError(), Msg); |
223 | return T(); |
224 | } |
225 | |
226 | static int usage() { |
227 | errs() << "Available subcommands: dump-symtab run\n" ; |
228 | return 1; |
229 | } |
230 | |
231 | static int run(int argc, char **argv) { |
232 | cl::ParseCommandLineOptions(argc, argv, Overview: "Resolution-based LTO test harness" ); |
233 | // Load bitcode into the new debug info format by default. |
234 | if (LoadBitcodeIntoNewDbgInfoFormat == cl::boolOrDefault::BOU_UNSET) |
235 | LoadBitcodeIntoNewDbgInfoFormat = cl::boolOrDefault::BOU_TRUE; |
236 | |
237 | // RemoveDIs debug-info transition: tests may request that we /try/ to use the |
238 | // new debug-info format. |
239 | if (TryUseNewDbgInfoFormat) { |
240 | // Turn the new debug-info format on. |
241 | UseNewDbgInfoFormat = true; |
242 | } |
243 | // Since llvm-lto2 collects multiple IR modules together, for simplicity's |
244 | // sake we disable the "PreserveInputDbgFormat" flag to enforce a single debug |
245 | // info format. |
246 | PreserveInputDbgFormat = cl::boolOrDefault::BOU_FALSE; |
247 | |
248 | // FIXME: Workaround PR30396 which means that a symbol can appear |
249 | // more than once if it is defined in module-level assembly and |
250 | // has a GV declaration. We allow (file, symbol) pairs to have multiple |
251 | // resolutions and apply them in the order observed. |
252 | std::map<std::pair<std::string, std::string>, std::list<SymbolResolution>> |
253 | CommandLineResolutions; |
254 | for (std::string R : SymbolResolutions) { |
255 | StringRef Rest = R; |
256 | StringRef FileName, SymbolName; |
257 | std::tie(args&: FileName, args&: Rest) = Rest.split(Separator: ','); |
258 | if (Rest.empty()) { |
259 | llvm::errs() << "invalid resolution: " << R << '\n'; |
260 | return 1; |
261 | } |
262 | std::tie(args&: SymbolName, args&: Rest) = Rest.split(Separator: ','); |
263 | SymbolResolution Res; |
264 | for (char C : Rest) { |
265 | if (C == 'p') |
266 | Res.Prevailing = true; |
267 | else if (C == 'l') |
268 | Res.FinalDefinitionInLinkageUnit = true; |
269 | else if (C == 'x') |
270 | Res.VisibleToRegularObj = true; |
271 | else if (C == 'r') |
272 | Res.LinkerRedefined = true; |
273 | else { |
274 | llvm::errs() << "invalid character " << C << " in resolution: " << R |
275 | << '\n'; |
276 | return 1; |
277 | } |
278 | } |
279 | CommandLineResolutions[{std::string(FileName), std::string(SymbolName)}] |
280 | .push_back(x: Res); |
281 | } |
282 | |
283 | std::vector<std::unique_ptr<MemoryBuffer>> MBs; |
284 | |
285 | Config Conf; |
286 | |
287 | Conf.CPU = codegen::getMCPU(); |
288 | Conf.Options = codegen::InitTargetOptionsFromCodeGenFlags(TheTriple: Triple()); |
289 | Conf.MAttrs = codegen::getMAttrs(); |
290 | if (auto RM = codegen::getExplicitRelocModel()) |
291 | Conf.RelocModel = *RM; |
292 | Conf.CodeModel = codegen::getExplicitCodeModel(); |
293 | |
294 | Conf.DebugPassManager = DebugPassManager; |
295 | |
296 | if (SaveTemps && !SelectSaveTemps.empty()) { |
297 | llvm::errs() << "-save-temps cannot be specified with -select-save-temps\n" ; |
298 | return 1; |
299 | } |
300 | if (SaveTemps || !SelectSaveTemps.empty()) { |
301 | DenseSet<StringRef> SaveTempsArgs; |
302 | for (auto &S : SelectSaveTemps) |
303 | if (is_contained(Range: SaveTempsValues, Element: S)) |
304 | SaveTempsArgs.insert(V: S); |
305 | else { |
306 | llvm::errs() << ("invalid -select-save-temps argument: " + S) << '\n'; |
307 | return 1; |
308 | } |
309 | check(E: Conf.addSaveTemps(OutputFileName: OutputFilename + "." , UseInputModulePath: false, SaveTempsArgs), |
310 | Msg: "Config::addSaveTemps failed" ); |
311 | } |
312 | |
313 | // Optimization remarks. |
314 | Conf.RemarksFilename = RemarksFilename; |
315 | Conf.RemarksPasses = RemarksPasses; |
316 | Conf.RemarksWithHotness = RemarksWithHotness; |
317 | Conf.RemarksHotnessThreshold = RemarksHotnessThreshold; |
318 | Conf.RemarksFormat = RemarksFormat; |
319 | |
320 | Conf.SampleProfile = SamplePGOFile; |
321 | Conf.CSIRProfile = CSPGOFile; |
322 | Conf.RunCSIRInstr = RunCSIRInstr; |
323 | |
324 | // Run a custom pipeline, if asked for. |
325 | Conf.OptPipeline = OptPipeline; |
326 | Conf.AAPipeline = AAPipeline; |
327 | |
328 | Conf.OptLevel = OptLevel - '0'; |
329 | Conf.Freestanding = EnableFreestanding; |
330 | for (auto &PluginFN : PassPlugins) |
331 | Conf.PassPlugins.push_back(x: PluginFN); |
332 | if (auto Level = CodeGenOpt::parseLevel(C: CGOptLevel)) { |
333 | Conf.CGOptLevel = *Level; |
334 | } else { |
335 | llvm::errs() << "invalid cg optimization level: " << CGOptLevel << '\n'; |
336 | return 1; |
337 | } |
338 | |
339 | if (auto FT = codegen::getExplicitFileType()) |
340 | Conf.CGFileType = *FT; |
341 | |
342 | Conf.OverrideTriple = OverrideTriple; |
343 | Conf.DefaultTriple = DefaultTriple; |
344 | Conf.StatsFile = StatsFile; |
345 | Conf.PTO.LoopVectorization = Conf.OptLevel > 1; |
346 | Conf.PTO.SLPVectorization = Conf.OptLevel > 1; |
347 | |
348 | ThinBackend Backend; |
349 | if (ThinLTODistributedIndexes) |
350 | Backend = createWriteIndexesThinBackend(/*OldPrefix=*/"" , |
351 | /*NewPrefix=*/"" , |
352 | /*NativeObjectPrefix=*/"" , |
353 | ShouldEmitImportsFiles: ThinLTOEmitImports, |
354 | /*LinkedObjectsFile=*/nullptr, |
355 | /*OnWrite=*/{}); |
356 | else |
357 | Backend = createInProcessThinBackend( |
358 | Parallelism: llvm::heavyweight_hardware_concurrency(Num: Threads), |
359 | /* OnWrite */ {}, ShouldEmitIndexFiles: ThinLTOEmitIndexes, ShouldEmitImportsFiles: ThinLTOEmitImports); |
360 | |
361 | // Track whether we hit an error; in particular, in the multi-threaded case, |
362 | // we can't exit() early because the rest of the threads wouldn't have had a |
363 | // change to be join-ed, and that would result in a "terminate called without |
364 | // an active exception". Altogether, this results in nondeterministic |
365 | // behavior. Instead, we don't exit in the multi-threaded case, but we make |
366 | // sure to report the error and then at the end (after joining cleanly) |
367 | // exit(1). |
368 | std::atomic<bool> HasErrors; |
369 | std::atomic_init(a: &HasErrors, i: false); |
370 | Conf.DiagHandler = [&](const DiagnosticInfo &DI) { |
371 | DiagnosticPrinterRawOStream DP(errs()); |
372 | DI.print(DP); |
373 | errs() << '\n'; |
374 | if (DI.getSeverity() == DS_Error) |
375 | HasErrors = true; |
376 | }; |
377 | |
378 | LTO::LTOKind LTOMode = LTO::LTOK_Default; |
379 | |
380 | if (UnifiedLTOMode == "full" ) { |
381 | LTOMode = LTO::LTOK_UnifiedRegular; |
382 | } else if (UnifiedLTOMode == "thin" ) { |
383 | LTOMode = LTO::LTOK_UnifiedThin; |
384 | } else if (UnifiedLTOMode == "default" ) { |
385 | LTOMode = LTO::LTOK_Default; |
386 | } else if (!UnifiedLTOMode.empty()) { |
387 | llvm::errs() << "invalid LTO mode\n" ; |
388 | return 1; |
389 | } |
390 | |
391 | LTO Lto(std::move(Conf), std::move(Backend), 1, LTOMode); |
392 | |
393 | for (std::string F : InputFilenames) { |
394 | std::unique_ptr<MemoryBuffer> MB = check(E: MemoryBuffer::getFile(Filename: F), Msg: F); |
395 | std::unique_ptr<InputFile> Input = |
396 | check(E: InputFile::create(Object: MB->getMemBufferRef()), Msg: F); |
397 | |
398 | std::vector<SymbolResolution> Res; |
399 | for (const InputFile::Symbol &Sym : Input->symbols()) { |
400 | auto I = CommandLineResolutions.find(x: {F, std::string(Sym.getName())}); |
401 | // If it isn't found, look for ".", which would have been added |
402 | // (followed by a hash) when the symbol was promoted during module |
403 | // splitting if it was defined in one part and used in the other. |
404 | // Try looking up the symbol name before the suffix. |
405 | if (I == CommandLineResolutions.end()) { |
406 | auto SplitName = Sym.getName().rsplit(Separator: "." ); |
407 | I = CommandLineResolutions.find(x: {F, std::string(SplitName.first)}); |
408 | } |
409 | if (I == CommandLineResolutions.end()) { |
410 | llvm::errs() << argv[0] << ": missing symbol resolution for " << F |
411 | << ',' << Sym.getName() << '\n'; |
412 | HasErrors = true; |
413 | } else { |
414 | Res.push_back(x: I->second.front()); |
415 | I->second.pop_front(); |
416 | if (I->second.empty()) |
417 | CommandLineResolutions.erase(position: I); |
418 | } |
419 | } |
420 | |
421 | if (HasErrors) |
422 | continue; |
423 | |
424 | MBs.push_back(x: std::move(MB)); |
425 | check(E: Lto.add(Obj: std::move(Input), Res), Msg: F); |
426 | } |
427 | |
428 | if (!CommandLineResolutions.empty()) { |
429 | HasErrors = true; |
430 | for (auto UnusedRes : CommandLineResolutions) |
431 | llvm::errs() << argv[0] << ": unused symbol resolution for " |
432 | << UnusedRes.first.first << ',' << UnusedRes.first.second |
433 | << '\n'; |
434 | } |
435 | if (HasErrors) |
436 | return 1; |
437 | |
438 | auto AddStream = |
439 | [&](size_t Task, |
440 | const Twine &ModuleName) -> std::unique_ptr<CachedFileStream> { |
441 | std::string Path = OutputFilename + "." + utostr(X: Task); |
442 | |
443 | std::error_code EC; |
444 | auto S = std::make_unique<raw_fd_ostream>(args&: Path, args&: EC, args: sys::fs::OF_None); |
445 | check(EC, Msg: Path); |
446 | return std::make_unique<CachedFileStream>(args: std::move(S), args&: Path); |
447 | }; |
448 | |
449 | auto AddBuffer = [&](size_t Task, const Twine &ModuleName, |
450 | std::unique_ptr<MemoryBuffer> MB) { |
451 | *AddStream(Task, ModuleName)->OS << MB->getBuffer(); |
452 | }; |
453 | |
454 | FileCache Cache; |
455 | if (!CacheDir.empty()) |
456 | Cache = check(E: localCache(CacheNameRef: "ThinLTO" , TempFilePrefixRef: "Thin" , CacheDirectoryPathRef: CacheDir, AddBuffer), |
457 | Msg: "failed to create cache" ); |
458 | |
459 | check(E: Lto.run(AddStream, Cache), Msg: "LTO::run failed" ); |
460 | return static_cast<int>(HasErrors); |
461 | } |
462 | |
463 | static int dumpSymtab(int argc, char **argv) { |
464 | for (StringRef F : make_range(x: argv + 1, y: argv + argc)) { |
465 | std::unique_ptr<MemoryBuffer> MB = |
466 | check(E: MemoryBuffer::getFile(Filename: F), Msg: std::string(F)); |
467 | BitcodeFileContents BFC = |
468 | check(E: getBitcodeFileContents(Buffer: *MB), Msg: std::string(F)); |
469 | |
470 | if (BFC.Symtab.size() >= sizeof(irsymtab::storage::Header)) { |
471 | auto *Hdr = reinterpret_cast<const irsymtab::storage::Header *>( |
472 | BFC.Symtab.data()); |
473 | outs() << "version: " << Hdr->Version << '\n'; |
474 | if (Hdr->Version == irsymtab::storage::Header::kCurrentVersion) |
475 | outs() << "producer: " << Hdr->Producer.get(Strtab: BFC.StrtabForSymtab) |
476 | << '\n'; |
477 | } |
478 | |
479 | std::unique_ptr<InputFile> Input = |
480 | check(E: InputFile::create(Object: MB->getMemBufferRef()), Msg: std::string(F)); |
481 | |
482 | outs() << "target triple: " << Input->getTargetTriple() << '\n'; |
483 | Triple TT(Input->getTargetTriple()); |
484 | |
485 | outs() << "source filename: " << Input->getSourceFileName() << '\n'; |
486 | |
487 | if (TT.isOSBinFormatCOFF()) |
488 | outs() << "linker opts: " << Input->getCOFFLinkerOpts() << '\n'; |
489 | |
490 | if (TT.isOSBinFormatELF()) { |
491 | outs() << "dependent libraries:" ; |
492 | for (auto L : Input->getDependentLibraries()) |
493 | outs() << " \"" << L << "\"" ; |
494 | outs() << '\n'; |
495 | } |
496 | |
497 | ArrayRef<std::pair<StringRef, Comdat::SelectionKind>> ComdatTable = |
498 | Input->getComdatTable(); |
499 | for (const InputFile::Symbol &Sym : Input->symbols()) { |
500 | switch (Sym.getVisibility()) { |
501 | case GlobalValue::HiddenVisibility: |
502 | outs() << 'H'; |
503 | break; |
504 | case GlobalValue::ProtectedVisibility: |
505 | outs() << 'P'; |
506 | break; |
507 | case GlobalValue::DefaultVisibility: |
508 | outs() << 'D'; |
509 | break; |
510 | } |
511 | |
512 | auto PrintBool = [&](char C, bool B) { outs() << (B ? C : '-'); }; |
513 | PrintBool('U', Sym.isUndefined()); |
514 | PrintBool('C', Sym.isCommon()); |
515 | PrintBool('W', Sym.isWeak()); |
516 | PrintBool('I', Sym.isIndirect()); |
517 | PrintBool('O', Sym.canBeOmittedFromSymbolTable()); |
518 | PrintBool('T', Sym.isTLS()); |
519 | PrintBool('X', Sym.isExecutable()); |
520 | outs() << ' ' << Sym.getName() << '\n'; |
521 | |
522 | if (Sym.isCommon()) |
523 | outs() << " size " << Sym.getCommonSize() << " align " |
524 | << Sym.getCommonAlignment() << '\n'; |
525 | |
526 | int Comdat = Sym.getComdatIndex(); |
527 | if (Comdat != -1) { |
528 | outs() << " comdat " ; |
529 | switch (ComdatTable[Comdat].second) { |
530 | case Comdat::Any: |
531 | outs() << "any" ; |
532 | break; |
533 | case Comdat::ExactMatch: |
534 | outs() << "exactmatch" ; |
535 | break; |
536 | case Comdat::Largest: |
537 | outs() << "largest" ; |
538 | break; |
539 | case Comdat::NoDeduplicate: |
540 | outs() << "nodeduplicate" ; |
541 | break; |
542 | case Comdat::SameSize: |
543 | outs() << "samesize" ; |
544 | break; |
545 | } |
546 | outs() << ' ' << ComdatTable[Comdat].first << '\n'; |
547 | } |
548 | |
549 | if (TT.isOSBinFormatCOFF() && Sym.isWeak() && Sym.isIndirect()) |
550 | outs() << " fallback " << Sym.getCOFFWeakExternalFallback() << '\n'; |
551 | |
552 | if (!Sym.getSectionName().empty()) |
553 | outs() << " section " << Sym.getSectionName() << "\n" ; |
554 | } |
555 | |
556 | outs() << '\n'; |
557 | } |
558 | |
559 | return 0; |
560 | } |
561 | |
562 | int main(int argc, char **argv) { |
563 | InitLLVM X(argc, argv); |
564 | InitializeAllTargets(); |
565 | InitializeAllTargetMCs(); |
566 | InitializeAllAsmPrinters(); |
567 | InitializeAllAsmParsers(); |
568 | |
569 | // FIXME: This should use llvm::cl subcommands, but it isn't currently |
570 | // possible to pass an argument not associated with a subcommand to a |
571 | // subcommand (e.g. -use-new-pm). |
572 | if (argc < 2) |
573 | return usage(); |
574 | |
575 | StringRef Subcommand = argv[1]; |
576 | // Ensure that argv[0] is correct after adjusting argv/argc. |
577 | argv[1] = argv[0]; |
578 | if (Subcommand == "dump-symtab" ) |
579 | return dumpSymtab(argc: argc - 1, argv: argv + 1); |
580 | if (Subcommand == "run" ) |
581 | return run(argc: argc - 1, argv: argv + 1); |
582 | return usage(); |
583 | } |
584 | |