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comparison lib/Passes/PassBuilder.cpp @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
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children 7d135dc70f03
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84:f3e34b893a5f 95:afa8332a0e37
1 //===- Parsing, selection, and construction of pass pipelines -------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 /// \file
10 ///
11 /// This file provides the implementation of the PassBuilder based on our
12 /// static pass registry as well as related functionality. It also provides
13 /// helpers to aid in analyzing, debugging, and testing passes and pass
14 /// pipelines.
15 ///
16 //===----------------------------------------------------------------------===//
17
18 #include "llvm/Passes/PassBuilder.h"
19 #include "llvm/Analysis/AssumptionCache.h"
20 #include "llvm/Analysis/CGSCCPassManager.h"
21 #include "llvm/Analysis/LazyCallGraph.h"
22 #include "llvm/Analysis/LoopInfo.h"
23 #include "llvm/Analysis/ScalarEvolution.h"
24 #include "llvm/Analysis/TargetLibraryInfo.h"
25 #include "llvm/Analysis/TargetTransformInfo.h"
26 #include "llvm/IR/Dominators.h"
27 #include "llvm/IR/IRPrintingPasses.h"
28 #include "llvm/IR/PassManager.h"
29 #include "llvm/IR/Verifier.h"
30 #include "llvm/Support/Debug.h"
31 #include "llvm/Target/TargetMachine.h"
32 #include "llvm/Transforms/InstCombine/InstCombine.h"
33 #include "llvm/Transforms/Scalar/EarlyCSE.h"
34 #include "llvm/Transforms/Scalar/LowerExpectIntrinsic.h"
35 #include "llvm/Transforms/Scalar/SimplifyCFG.h"
36 #include "llvm/Transforms/Scalar/SROA.h"
37
38 using namespace llvm;
39
40 namespace {
41
42 /// \brief No-op module pass which does nothing.
43 struct NoOpModulePass {
44 PreservedAnalyses run(Module &M) { return PreservedAnalyses::all(); }
45 static StringRef name() { return "NoOpModulePass"; }
46 };
47
48 /// \brief No-op module analysis.
49 struct NoOpModuleAnalysis {
50 struct Result {};
51 Result run(Module &) { return Result(); }
52 static StringRef name() { return "NoOpModuleAnalysis"; }
53 static void *ID() { return (void *)&PassID; }
54 private:
55 static char PassID;
56 };
57
58 char NoOpModuleAnalysis::PassID;
59
60 /// \brief No-op CGSCC pass which does nothing.
61 struct NoOpCGSCCPass {
62 PreservedAnalyses run(LazyCallGraph::SCC &C) {
63 return PreservedAnalyses::all();
64 }
65 static StringRef name() { return "NoOpCGSCCPass"; }
66 };
67
68 /// \brief No-op CGSCC analysis.
69 struct NoOpCGSCCAnalysis {
70 struct Result {};
71 Result run(LazyCallGraph::SCC &) { return Result(); }
72 static StringRef name() { return "NoOpCGSCCAnalysis"; }
73 static void *ID() { return (void *)&PassID; }
74 private:
75 static char PassID;
76 };
77
78 char NoOpCGSCCAnalysis::PassID;
79
80 /// \brief No-op function pass which does nothing.
81 struct NoOpFunctionPass {
82 PreservedAnalyses run(Function &F) { return PreservedAnalyses::all(); }
83 static StringRef name() { return "NoOpFunctionPass"; }
84 };
85
86 /// \brief No-op function analysis.
87 struct NoOpFunctionAnalysis {
88 struct Result {};
89 Result run(Function &) { return Result(); }
90 static StringRef name() { return "NoOpFunctionAnalysis"; }
91 static void *ID() { return (void *)&PassID; }
92 private:
93 static char PassID;
94 };
95
96 char NoOpFunctionAnalysis::PassID;
97
98 } // End anonymous namespace.
99
100 void PassBuilder::registerModuleAnalyses(ModuleAnalysisManager &MAM) {
101 #define MODULE_ANALYSIS(NAME, CREATE_PASS) \
102 MAM.registerPass(CREATE_PASS);
103 #include "PassRegistry.def"
104 }
105
106 void PassBuilder::registerCGSCCAnalyses(CGSCCAnalysisManager &CGAM) {
107 #define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
108 CGAM.registerPass(CREATE_PASS);
109 #include "PassRegistry.def"
110 }
111
112 void PassBuilder::registerFunctionAnalyses(FunctionAnalysisManager &FAM) {
113 #define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
114 FAM.registerPass(CREATE_PASS);
115 #include "PassRegistry.def"
116 }
117
118 #ifndef NDEBUG
119 static bool isModulePassName(StringRef Name) {
120 #define MODULE_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
121 #define MODULE_ANALYSIS(NAME, CREATE_PASS) \
122 if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
123 return true;
124 #include "PassRegistry.def"
125
126 return false;
127 }
128 #endif
129
130 static bool isCGSCCPassName(StringRef Name) {
131 #define CGSCC_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
132 #define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
133 if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
134 return true;
135 #include "PassRegistry.def"
136
137 return false;
138 }
139
140 static bool isFunctionPassName(StringRef Name) {
141 #define FUNCTION_PASS(NAME, CREATE_PASS) if (Name == NAME) return true;
142 #define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
143 if (Name == "require<" NAME ">" || Name == "invalidate<" NAME ">") \
144 return true;
145 #include "PassRegistry.def"
146
147 return false;
148 }
149
150 bool PassBuilder::parseModulePassName(ModulePassManager &MPM, StringRef Name) {
151 #define MODULE_PASS(NAME, CREATE_PASS) \
152 if (Name == NAME) { \
153 MPM.addPass(CREATE_PASS); \
154 return true; \
155 }
156 #define MODULE_ANALYSIS(NAME, CREATE_PASS) \
157 if (Name == "require<" NAME ">") { \
158 MPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
159 return true; \
160 } \
161 if (Name == "invalidate<" NAME ">") { \
162 MPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
163 return true; \
164 }
165 #include "PassRegistry.def"
166
167 return false;
168 }
169
170 bool PassBuilder::parseCGSCCPassName(CGSCCPassManager &CGPM, StringRef Name) {
171 #define CGSCC_PASS(NAME, CREATE_PASS) \
172 if (Name == NAME) { \
173 CGPM.addPass(CREATE_PASS); \
174 return true; \
175 }
176 #define CGSCC_ANALYSIS(NAME, CREATE_PASS) \
177 if (Name == "require<" NAME ">") { \
178 CGPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
179 return true; \
180 } \
181 if (Name == "invalidate<" NAME ">") { \
182 CGPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
183 return true; \
184 }
185 #include "PassRegistry.def"
186
187 return false;
188 }
189
190 bool PassBuilder::parseFunctionPassName(FunctionPassManager &FPM,
191 StringRef Name) {
192 #define FUNCTION_PASS(NAME, CREATE_PASS) \
193 if (Name == NAME) { \
194 FPM.addPass(CREATE_PASS); \
195 return true; \
196 }
197 #define FUNCTION_ANALYSIS(NAME, CREATE_PASS) \
198 if (Name == "require<" NAME ">") { \
199 FPM.addPass(RequireAnalysisPass<decltype(CREATE_PASS)>()); \
200 return true; \
201 } \
202 if (Name == "invalidate<" NAME ">") { \
203 FPM.addPass(InvalidateAnalysisPass<decltype(CREATE_PASS)>()); \
204 return true; \
205 }
206 #include "PassRegistry.def"
207
208 return false;
209 }
210
211 bool PassBuilder::parseFunctionPassPipeline(FunctionPassManager &FPM,
212 StringRef &PipelineText,
213 bool VerifyEachPass,
214 bool DebugLogging) {
215 for (;;) {
216 // Parse nested pass managers by recursing.
217 if (PipelineText.startswith("function(")) {
218 FunctionPassManager NestedFPM(DebugLogging);
219
220 // Parse the inner pipeline inte the nested manager.
221 PipelineText = PipelineText.substr(strlen("function("));
222 if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
223 DebugLogging) ||
224 PipelineText.empty())
225 return false;
226 assert(PipelineText[0] == ')');
227 PipelineText = PipelineText.substr(1);
228
229 // Add the nested pass manager with the appropriate adaptor.
230 FPM.addPass(std::move(NestedFPM));
231 } else {
232 // Otherwise try to parse a pass name.
233 size_t End = PipelineText.find_first_of(",)");
234 if (!parseFunctionPassName(FPM, PipelineText.substr(0, End)))
235 return false;
236 if (VerifyEachPass)
237 FPM.addPass(VerifierPass());
238
239 PipelineText = PipelineText.substr(End);
240 }
241
242 if (PipelineText.empty() || PipelineText[0] == ')')
243 return true;
244
245 assert(PipelineText[0] == ',');
246 PipelineText = PipelineText.substr(1);
247 }
248 }
249
250 bool PassBuilder::parseCGSCCPassPipeline(CGSCCPassManager &CGPM,
251 StringRef &PipelineText,
252 bool VerifyEachPass,
253 bool DebugLogging) {
254 for (;;) {
255 // Parse nested pass managers by recursing.
256 if (PipelineText.startswith("cgscc(")) {
257 CGSCCPassManager NestedCGPM(DebugLogging);
258
259 // Parse the inner pipeline into the nested manager.
260 PipelineText = PipelineText.substr(strlen("cgscc("));
261 if (!parseCGSCCPassPipeline(NestedCGPM, PipelineText, VerifyEachPass,
262 DebugLogging) ||
263 PipelineText.empty())
264 return false;
265 assert(PipelineText[0] == ')');
266 PipelineText = PipelineText.substr(1);
267
268 // Add the nested pass manager with the appropriate adaptor.
269 CGPM.addPass(std::move(NestedCGPM));
270 } else if (PipelineText.startswith("function(")) {
271 FunctionPassManager NestedFPM(DebugLogging);
272
273 // Parse the inner pipeline inte the nested manager.
274 PipelineText = PipelineText.substr(strlen("function("));
275 if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
276 DebugLogging) ||
277 PipelineText.empty())
278 return false;
279 assert(PipelineText[0] == ')');
280 PipelineText = PipelineText.substr(1);
281
282 // Add the nested pass manager with the appropriate adaptor.
283 CGPM.addPass(createCGSCCToFunctionPassAdaptor(std::move(NestedFPM)));
284 } else {
285 // Otherwise try to parse a pass name.
286 size_t End = PipelineText.find_first_of(",)");
287 if (!parseCGSCCPassName(CGPM, PipelineText.substr(0, End)))
288 return false;
289 // FIXME: No verifier support for CGSCC passes!
290
291 PipelineText = PipelineText.substr(End);
292 }
293
294 if (PipelineText.empty() || PipelineText[0] == ')')
295 return true;
296
297 assert(PipelineText[0] == ',');
298 PipelineText = PipelineText.substr(1);
299 }
300 }
301
302 bool PassBuilder::parseModulePassPipeline(ModulePassManager &MPM,
303 StringRef &PipelineText,
304 bool VerifyEachPass,
305 bool DebugLogging) {
306 for (;;) {
307 // Parse nested pass managers by recursing.
308 if (PipelineText.startswith("module(")) {
309 ModulePassManager NestedMPM(DebugLogging);
310
311 // Parse the inner pipeline into the nested manager.
312 PipelineText = PipelineText.substr(strlen("module("));
313 if (!parseModulePassPipeline(NestedMPM, PipelineText, VerifyEachPass,
314 DebugLogging) ||
315 PipelineText.empty())
316 return false;
317 assert(PipelineText[0] == ')');
318 PipelineText = PipelineText.substr(1);
319
320 // Now add the nested manager as a module pass.
321 MPM.addPass(std::move(NestedMPM));
322 } else if (PipelineText.startswith("cgscc(")) {
323 CGSCCPassManager NestedCGPM(DebugLogging);
324
325 // Parse the inner pipeline inte the nested manager.
326 PipelineText = PipelineText.substr(strlen("cgscc("));
327 if (!parseCGSCCPassPipeline(NestedCGPM, PipelineText, VerifyEachPass,
328 DebugLogging) ||
329 PipelineText.empty())
330 return false;
331 assert(PipelineText[0] == ')');
332 PipelineText = PipelineText.substr(1);
333
334 // Add the nested pass manager with the appropriate adaptor.
335 MPM.addPass(
336 createModuleToPostOrderCGSCCPassAdaptor(std::move(NestedCGPM)));
337 } else if (PipelineText.startswith("function(")) {
338 FunctionPassManager NestedFPM(DebugLogging);
339
340 // Parse the inner pipeline inte the nested manager.
341 PipelineText = PipelineText.substr(strlen("function("));
342 if (!parseFunctionPassPipeline(NestedFPM, PipelineText, VerifyEachPass,
343 DebugLogging) ||
344 PipelineText.empty())
345 return false;
346 assert(PipelineText[0] == ')');
347 PipelineText = PipelineText.substr(1);
348
349 // Add the nested pass manager with the appropriate adaptor.
350 MPM.addPass(createModuleToFunctionPassAdaptor(std::move(NestedFPM)));
351 } else {
352 // Otherwise try to parse a pass name.
353 size_t End = PipelineText.find_first_of(",)");
354 if (!parseModulePassName(MPM, PipelineText.substr(0, End)))
355 return false;
356 if (VerifyEachPass)
357 MPM.addPass(VerifierPass());
358
359 PipelineText = PipelineText.substr(End);
360 }
361
362 if (PipelineText.empty() || PipelineText[0] == ')')
363 return true;
364
365 assert(PipelineText[0] == ',');
366 PipelineText = PipelineText.substr(1);
367 }
368 }
369
370 // Primary pass pipeline description parsing routine.
371 // FIXME: Should this routine accept a TargetMachine or require the caller to
372 // pre-populate the analysis managers with target-specific stuff?
373 bool PassBuilder::parsePassPipeline(ModulePassManager &MPM,
374 StringRef PipelineText, bool VerifyEachPass,
375 bool DebugLogging) {
376 // By default, try to parse the pipeline as-if it were within an implicit
377 // 'module(...)' pass pipeline. If this will parse at all, it needs to
378 // consume the entire string.
379 if (parseModulePassPipeline(MPM, PipelineText, VerifyEachPass, DebugLogging))
380 return PipelineText.empty();
381
382 // This isn't parsable as a module pipeline, look for the end of a pass name
383 // and directly drop down to that layer.
384 StringRef FirstName =
385 PipelineText.substr(0, PipelineText.find_first_of(",)"));
386 assert(!isModulePassName(FirstName) &&
387 "Already handled all module pipeline options.");
388
389 // If this looks like a CGSCC pass, parse the whole thing as a CGSCC
390 // pipeline.
391 if (isCGSCCPassName(FirstName)) {
392 CGSCCPassManager CGPM(DebugLogging);
393 if (!parseCGSCCPassPipeline(CGPM, PipelineText, VerifyEachPass,
394 DebugLogging) ||
395 !PipelineText.empty())
396 return false;
397 MPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
398 return true;
399 }
400
401 // Similarly, if this looks like a Function pass, parse the whole thing as
402 // a Function pipelien.
403 if (isFunctionPassName(FirstName)) {
404 FunctionPassManager FPM(DebugLogging);
405 if (!parseFunctionPassPipeline(FPM, PipelineText, VerifyEachPass,
406 DebugLogging) ||
407 !PipelineText.empty())
408 return false;
409 MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
410 return true;
411 }
412
413 return false;
414 }