LLVM  13.0.0git
PassManagerBuilder.cpp
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1 //===- PassManagerBuilder.cpp - Build Standard Pass -----------------------===//
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 the PassManagerBuilder class, which is used to set up a
10 // "standard" optimization sequence suitable for languages like C and C++.
11 //
12 //===----------------------------------------------------------------------===//
13 
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/SmallVector.h"
23 #include "llvm/Analysis/Passes.h"
27 #include "llvm/IR/DataLayout.h"
29 #include "llvm/IR/Verifier.h"
34 #include "llvm/Transforms/IPO.h"
41 #include "llvm/Transforms/Scalar.h"
47 #include "llvm/Transforms/Utils.h"
52 
53 using namespace llvm;
54 
55 namespace llvm {
56 cl::opt<bool> RunPartialInlining("enable-partial-inlining", cl::init(false),
58  cl::desc("Run Partial inlinining pass"));
59 
60 static cl::opt<bool>
61 UseGVNAfterVectorization("use-gvn-after-vectorization",
62  cl::init(false), cl::Hidden,
63  cl::desc("Run GVN instead of Early CSE after vectorization passes"));
64 
66  "extra-vectorizer-passes", cl::init(false), cl::Hidden,
67  cl::desc("Run cleanup optimization passes after vectorization."));
68 
69 static cl::opt<bool>
70 RunLoopRerolling("reroll-loops", cl::Hidden,
71  cl::desc("Run the loop rerolling pass"));
72 
73 cl::opt<bool> RunNewGVN("enable-newgvn", cl::init(false), cl::Hidden,
74  cl::desc("Run the NewGVN pass"));
75 
76 // Experimental option to use CFL-AA
78  UseCFLAA("use-cfl-aa", cl::init(::CFLAAType::None), cl::Hidden,
79  cl::desc("Enable the new, experimental CFL alias analysis"),
80  cl::values(clEnumValN(::CFLAAType::None, "none", "Disable CFL-AA"),
82  "Enable unification-based CFL-AA"),
83  clEnumValN(::CFLAAType::Andersen, "anders",
84  "Enable inclusion-based CFL-AA"),
85  clEnumValN(::CFLAAType::Both, "both",
86  "Enable both variants of CFL-AA")));
87 
89  "enable-loopinterchange", cl::init(false), cl::Hidden,
90  cl::desc("Enable the experimental LoopInterchange Pass"));
91 
92 cl::opt<bool> EnableUnrollAndJam("enable-unroll-and-jam", cl::init(false),
93  cl::Hidden,
94  cl::desc("Enable Unroll And Jam Pass"));
95 
96 cl::opt<bool> EnableLoopFlatten("enable-loop-flatten", cl::init(false),
97  cl::Hidden,
98  cl::desc("Enable the LoopFlatten Pass"));
99 
100 static cl::opt<bool>
101  EnablePrepareForThinLTO("prepare-for-thinlto", cl::init(false), cl::Hidden,
102  cl::desc("Enable preparation for ThinLTO."));
103 
104 static cl::opt<bool>
105  EnablePerformThinLTO("perform-thinlto", cl::init(false), cl::Hidden,
106  cl::desc("Enable performing ThinLTO."));
107 
108 cl::opt<bool> EnableHotColdSplit("hot-cold-split", cl::init(false),
109  cl::ZeroOrMore, cl::desc("Enable hot-cold splitting pass"));
110 
111 cl::opt<bool> EnableIROutliner("ir-outliner", cl::init(false), cl::Hidden,
112  cl::desc("Enable ir outliner pass"));
113 
115  "enable-loop-versioning-licm", cl::init(false), cl::Hidden,
116  cl::desc("Enable the experimental Loop Versioning LICM pass"));
117 
119  DisablePreInliner("disable-preinline", cl::init(false), cl::Hidden,
120  cl::desc("Disable pre-instrumentation inliner"));
121 
123  "preinline-threshold", cl::Hidden, cl::init(75), cl::ZeroOrMore,
124  cl::desc("Control the amount of inlining in pre-instrumentation inliner "
125  "(default = 75)"));
126 
128  EnableGVNHoist("enable-gvn-hoist", cl::init(false), cl::ZeroOrMore,
129  cl::desc("Enable the GVN hoisting pass (default = off)"));
130 
131 static cl::opt<bool>
132  DisableLibCallsShrinkWrap("disable-libcalls-shrinkwrap", cl::init(false),
133  cl::Hidden,
134  cl::desc("Disable shrink-wrap library calls"));
135 
137  "enable-simple-loop-unswitch", cl::init(false), cl::Hidden,
138  cl::desc("Enable the simple loop unswitch pass. Also enables independent "
139  "cleanup passes integrated into the loop pass manager pipeline."));
140 
142  EnableGVNSink("enable-gvn-sink", cl::init(false), cl::ZeroOrMore,
143  cl::desc("Enable the GVN sinking pass (default = off)"));
144 
145 // This option is used in simplifying testing SampleFDO optimizations for
146 // profile loading.
148  EnableCHR("enable-chr", cl::init(true), cl::Hidden,
149  cl::desc("Enable control height reduction optimization (CHR)"));
150 
152  "flattened-profile-used", cl::init(false), cl::Hidden,
153  cl::desc("Indicate the sample profile being used is flattened, i.e., "
154  "no inline hierachy exists in the profile. "));
155 
157  "enable-order-file-instrumentation", cl::init(false), cl::Hidden,
158  cl::desc("Enable order file instrumentation (default = off)"));
159 
161  "enable-matrix", cl::init(false), cl::Hidden,
162  cl::desc("Enable lowering of the matrix intrinsics"));
163 
165  "enable-constraint-elimination", cl::init(false), cl::Hidden,
166  cl::desc(
167  "Enable pass to eliminate conditions based on linear constraints."));
168 
170  "attributor-enable", cl::Hidden, cl::init(AttributorRunOption::NONE),
171  cl::desc("Enable the attributor inter-procedural deduction pass."),
173  "enable all attributor runs"),
175  "enable module-wide attributor runs"),
177  "enable call graph SCC attributor runs"),
179  "disable attributor runs")));
180 
182 } // namespace llvm
183 
185  OptLevel = 2;
186  SizeLevel = 0;
187  LibraryInfo = nullptr;
188  Inliner = nullptr;
189  DisableUnrollLoops = false;
190  SLPVectorize = false;
191  LoopVectorize = true;
192  LoopsInterleaved = true;
194  NewGVN = RunNewGVN;
197  DisableGVNLoadPRE = false;
199  VerifyInput = false;
200  VerifyOutput = false;
201  MergeFunctions = false;
202  PrepareForLTO = false;
203  EnablePGOInstrGen = false;
204  EnablePGOCSInstrGen = false;
205  EnablePGOCSInstrUse = false;
206  PGOInstrGen = "";
207  PGOInstrUse = "";
208  PGOSampleUse = "";
211  DivergentTarget = false;
212  CallGraphProfile = true;
213 }
214 
216  delete LibraryInfo;
217  delete Inliner;
218 }
219 
220 /// Set of global extensions, automatically added as part of the standard set.
221 static ManagedStatic<
225  8>>
228 
229 /// Check if GlobalExtensions is constructed and not empty.
230 /// Since GlobalExtensions is a managed static, calling 'empty()' will trigger
231 /// the construction of the object.
233  return GlobalExtensions.isConstructed() && !GlobalExtensions->empty();
234 }
235 
239  auto ExtensionID = GlobalExtensionsCounter++;
240  GlobalExtensions->push_back(std::make_tuple(Ty, std::move(Fn), ExtensionID));
241  return ExtensionID;
242 }
243 
246  // RegisterStandardPasses may try to call this function after GlobalExtensions
247  // has already been destroyed; doing so should not generate an error.
248  if (!GlobalExtensions.isConstructed())
249  return;
250 
251  auto GlobalExtension =
252  llvm::find_if(*GlobalExtensions, [ExtensionID](const auto &elem) {
253  return std::get<2>(elem) == ExtensionID;
254  });
255  assert(GlobalExtension != GlobalExtensions->end() &&
256  "The extension ID to be removed should always be valid.");
257 
258  GlobalExtensions->erase(GlobalExtension);
259 }
260 
262  Extensions.push_back(std::make_pair(Ty, std::move(Fn)));
263 }
264 
265 void PassManagerBuilder::addExtensionsToPM(ExtensionPointTy ETy,
266  legacy::PassManagerBase &PM) const {
267  if (GlobalExtensionsNotEmpty()) {
268  for (auto &Ext : *GlobalExtensions) {
269  if (std::get<0>(Ext) == ETy)
270  std::get<1>(Ext)(*this, PM);
271  }
272  }
273  for (unsigned i = 0, e = Extensions.size(); i != e; ++i)
274  if (Extensions[i].first == ETy)
275  Extensions[i].second(*this, PM);
276 }
277 
278 void PassManagerBuilder::addInitialAliasAnalysisPasses(
279  legacy::PassManagerBase &PM) const {
280  switch (UseCFLAA) {
281  case ::CFLAAType::Steensgaard:
283  break;
284  case ::CFLAAType::Andersen:
286  break;
287  case ::CFLAAType::Both:
290  break;
291  default:
292  break;
293  }
294 
295  // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
296  // BasicAliasAnalysis wins if they disagree. This is intended to help
297  // support "obvious" type-punning idioms.
300 }
301 
304  addExtensionsToPM(EP_EarlyAsPossible, FPM);
305 
306  // Add LibraryInfo if we have some.
307  if (LibraryInfo)
309 
310  // The backends do not handle matrix intrinsics currently.
311  // Make sure they are also lowered in O0.
312  // FIXME: A lightweight version of the pass should run in the backend
313  // pipeline on demand.
314  if (EnableMatrix && OptLevel == 0)
316 
317  if (OptLevel == 0) return;
318 
319  addInitialAliasAnalysisPasses(FPM);
320 
321  // Lower llvm.expect to metadata before attempting transforms.
322  // Compare/branch metadata may alter the behavior of passes like SimplifyCFG.
325  FPM.add(createSROAPass());
326  FPM.add(createEarlyCSEPass());
327 }
328 
329 // Do PGO instrumentation generation or use pass as the option specified.
330 void PassManagerBuilder::addPGOInstrPasses(legacy::PassManagerBase &MPM,
331  bool IsCS = false) {
332  if (IsCS) {
334  return;
335  } else if (!EnablePGOInstrGen && PGOInstrUse.empty() && PGOSampleUse.empty())
336  return;
337 
338  // Perform the preinline and cleanup passes for O1 and above.
339  // We will not do this inline for context sensitive PGO (when IsCS is true).
340  if (OptLevel > 0 && !DisablePreInliner && PGOSampleUse.empty() && !IsCS) {
341  // Create preinline pass. We construct an InlineParams object and specify
342  // the threshold here to avoid the command line options of the regular
343  // inliner to influence pre-inlining. The only fields of InlineParams we
344  // care about are DefaultThreshold and HintThreshold.
346  IP.DefaultThreshold = PreInlineThreshold;
347  // FIXME: The hint threshold has the same value used by the regular inliner
348  // when not optimzing for size. This should probably be lowered after
349  // performance testing.
350  // Use PreInlineThreshold for both -Os and -Oz. Not running preinliner makes
351  // the instrumented binary unusably large. Even if PreInlineThreshold is not
352  // correct thresold for -Oz, it is better than not running preinliner.
353  IP.HintThreshold = SizeLevel > 0 ? PreInlineThreshold : 325;
354 
356  MPM.add(createSROAPass());
357  MPM.add(createEarlyCSEPass()); // Catch trivial redundancies
358  MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
359  MPM.add(createInstructionCombiningPass()); // Combine silly seq's
360  addExtensionsToPM(EP_Peephole, MPM);
361  }
362  if ((EnablePGOInstrGen && !IsCS) || (EnablePGOCSInstrGen && IsCS)) {
364  // Add the profile lowering pass.
366  if (!PGOInstrGen.empty())
367  Options.InstrProfileOutput = PGOInstrGen;
368  Options.DoCounterPromotion = true;
369  Options.UseBFIInPromotion = IsCS;
370  MPM.add(createLoopRotatePass());
372  }
373  if (!PGOInstrUse.empty())
375  // Indirect call promotion that promotes intra-module targets only.
376  // For ThinLTO this is done earlier due to interactions with globalopt
377  // for imported functions. We don't run this at -O0.
378  if (OptLevel > 0 && !IsCS)
379  MPM.add(
381 }
382 void PassManagerBuilder::addFunctionSimplificationPasses(
384  // Start of function pass.
385  // Break up aggregate allocas, using SSAUpdater.
386  assert(OptLevel >= 1 && "Calling function optimizer with no optimization level!");
387  MPM.add(createSROAPass());
388  MPM.add(createEarlyCSEPass(true /* Enable mem-ssa. */)); // Catch trivial redundancies
391 
392  if (OptLevel > 1) {
393  if (EnableGVNHoist)
394  MPM.add(createGVNHoistPass());
395  if (EnableGVNSink) {
396  MPM.add(createGVNSinkPass());
398  }
399  }
400 
403 
404  if (OptLevel > 1) {
405  // Speculative execution if the target has divergent branches; otherwise nop.
407 
408  MPM.add(createJumpThreadingPass()); // Thread jumps.
409  MPM.add(createCorrelatedValuePropagationPass()); // Propagate conditionals
410  }
411  MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
412  // Combine silly seq's
413  if (OptLevel > 2)
418  addExtensionsToPM(EP_Peephole, MPM);
419 
420  // Optimize memory intrinsic calls based on the profiled size information.
421  if (SizeLevel == 0)
423 
424  // TODO: Investigate the cost/benefit of tail call elimination on debugging.
425  if (OptLevel > 1)
426  MPM.add(createTailCallEliminationPass()); // Eliminate tail calls
427  MPM.add(createCFGSimplificationPass()); // Merge & remove BBs
428  MPM.add(createReassociatePass()); // Reassociate expressions
429 
430  // Begin the loop pass pipeline.
432  // The simple loop unswitch pass relies on separate cleanup passes. Schedule
433  // them first so when we re-process a loop they run before other loop
434  // passes.
437  }
438  // Try to remove as much code from the loop header as possible,
439  // to reduce amount of IR that will have to be duplicated.
440  // TODO: Investigate promotion cap for O1.
442  // Rotate Loop - disable header duplication at -Oz
443  MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1, PrepareForLTO));
444  // TODO: Investigate promotion cap for O1.
448  else
450  // FIXME: We break the loop pass pipeline here in order to do full
451  // simplify-cfg. Eventually loop-simplifycfg should be enhanced to replace the
452  // need for this.
455  // We resume loop passes creating a second loop pipeline here.
456  if (EnableLoopFlatten) {
457  MPM.add(createLoopFlattenPass()); // Flatten loops
459  }
460  MPM.add(createLoopIdiomPass()); // Recognize idioms like memset.
461  MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars
462  addExtensionsToPM(EP_LateLoopOptimizations, MPM);
463  MPM.add(createLoopDeletionPass()); // Delete dead loops
464 
466  MPM.add(createLoopInterchangePass()); // Interchange loops
467 
468  // Unroll small loops and perform peeling.
471  addExtensionsToPM(EP_LoopOptimizerEnd, MPM);
472  // This ends the loop pass pipelines.
473 
474  // Break up allocas that may now be splittable after loop unrolling.
475  MPM.add(createSROAPass());
476 
477  if (OptLevel > 1) {
478  MPM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds
479  MPM.add(NewGVN ? createNewGVNPass()
480  : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies
481  }
482  MPM.add(createSCCPPass()); // Constant prop with SCCP
483 
486 
487  // Delete dead bit computations (instcombine runs after to fold away the dead
488  // computations, and then ADCE will run later to exploit any new DCE
489  // opportunities that creates).
490  MPM.add(createBitTrackingDCEPass()); // Delete dead bit computations
491 
492  // Run instcombine after redundancy elimination to exploit opportunities
493  // opened up by them.
495  addExtensionsToPM(EP_Peephole, MPM);
496  if (OptLevel > 1) {
497  MPM.add(createJumpThreadingPass()); // Thread jumps
499  }
500  MPM.add(createAggressiveDCEPass()); // Delete dead instructions
501 
502  MPM.add(createMemCpyOptPass()); // Remove memcpy / form memset
503  // TODO: Investigate if this is too expensive at O1.
504  if (OptLevel > 1) {
505  MPM.add(createDeadStoreEliminationPass()); // Delete dead stores
507  }
508 
509  addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
510 
511  if (RerollLoops)
512  MPM.add(createLoopRerollPass());
513 
514  // Merge & remove BBs and sink & hoist common instructions.
516  SimplifyCFGOptions().hoistCommonInsts(true).sinkCommonInsts(true)));
517  // Clean up after everything.
519  addExtensionsToPM(EP_Peephole, MPM);
520 
521  if (EnableCHR && OptLevel >= 3 &&
522  (!PGOInstrUse.empty() || !PGOSampleUse.empty() || EnablePGOCSInstrGen))
524 }
525 
526 /// FIXME: Should LTO cause any differences to this set of passes?
527 void PassManagerBuilder::addVectorPasses(legacy::PassManagerBase &PM,
528  bool IsLTO) {
530 
531  if (IsLTO) {
532  // The vectorizer may have significantly shortened a loop body; unroll
533  // again. Unroll small loops to hide loop backedge latency and saturate any
534  // parallel execution resources of an out-of-order processor. We also then
535  // need to clean up redundancies and loop invariant code.
536  // FIXME: It would be really good to use a loop-integrated instruction
537  // combiner for cleanup here so that the unrolling and LICM can be pipelined
538  // across the loop nests.
539  // We do UnrollAndJam in a separate LPM to ensure it happens before unroll
545  }
546 
547  if (!IsLTO) {
548  // Eliminate loads by forwarding stores from the previous iteration to loads
549  // of the current iteration.
551  }
552  // Cleanup after the loop optimization passes.
554 
555  if (OptLevel > 1 && ExtraVectorizerPasses) {
556  // At higher optimization levels, try to clean up any runtime overlap and
557  // alignment checks inserted by the vectorizer. We want to track correlated
558  // runtime checks for two inner loops in the same outer loop, fold any
559  // common computations, hoist loop-invariant aspects out of any outer loop,
560  // and unswitch the runtime checks if possible. Once hoisted, we may have
561  // dead (or speculatable) control flows or more combining opportunities.
562  PM.add(createEarlyCSEPass());
569  }
570 
571  // Now that we've formed fast to execute loop structures, we do further
572  // optimizations. These are run afterward as they might block doing complex
573  // analyses and transforms such as what are needed for loop vectorization.
574 
575  // Cleanup after loop vectorization, etc. Simplification passes like CVP and
576  // GVN, loop transforms, and others have already run, so it's now better to
577  // convert to more optimized IR using more aggressive simplify CFG options.
578  // The extra sinking transform can create larger basic blocks, so do this
579  // before SLP vectorization.
581  .forwardSwitchCondToPhi(true)
582  .convertSwitchToLookupTable(true)
583  .needCanonicalLoops(false)
584  .hoistCommonInsts(true)
585  .sinkCommonInsts(true)));
586 
587  if (IsLTO) {
588  PM.add(createSCCPPass()); // Propagate exposed constants
589  PM.add(createInstructionCombiningPass()); // Clean up again
591  }
592 
593  // Optimize parallel scalar instruction chains into SIMD instructions.
594  if (SLPVectorize) {
596  if (OptLevel > 1 && ExtraVectorizerPasses)
597  PM.add(createEarlyCSEPass());
598  }
599 
600  // Enhance/cleanup vector code.
602 
603  if (!IsLTO) {
604  addExtensionsToPM(EP_Peephole, PM);
606 
608  // Unroll and Jam. We do this before unroll but need to be in a separate
609  // loop pass manager in order for the outer loop to be processed by
610  // unroll and jam before the inner loop is unrolled.
612  }
613 
614  // Unroll small loops
617 
618  if (!DisableUnrollLoops) {
619  // LoopUnroll may generate some redundency to cleanup.
621 
622  // Runtime unrolling will introduce runtime check in loop prologue. If the
623  // unrolled loop is a inner loop, then the prologue will be inside the
624  // outer loop. LICM pass can help to promote the runtime check out if the
625  // checked value is loop invariant.
627  }
628 
630  }
631 
632  // After vectorization and unrolling, assume intrinsics may tell us more
633  // about pointer alignments.
635 
636  if (IsLTO)
638 }
639 
642  // Whether this is a default or *LTO pre-link pipeline. The FullLTO post-link
643  // is handled separately, so just check this is not the ThinLTO post-link.
644  bool DefaultOrPreLinkPipeline = !PerformThinLTO;
645 
647 
648  if (!PGOSampleUse.empty()) {
649  MPM.add(createPruneEHPass());
650  // In ThinLTO mode, when flattened profile is used, all the available
651  // profile information will be annotated in PreLink phase so there is
652  // no need to load the profile again in PostLink.
655  }
656 
657  // Allow forcing function attributes as a debugging and tuning aid.
659 
660  // If all optimizations are disabled, just run the always-inline pass and,
661  // if enabled, the function merging pass.
662  if (OptLevel == 0) {
663  addPGOInstrPasses(MPM);
664  if (Inliner) {
665  MPM.add(Inliner);
666  Inliner = nullptr;
667  }
668 
669  // FIXME: The BarrierNoopPass is a HACK! The inliner pass above implicitly
670  // creates a CGSCC pass manager, but we don't want to add extensions into
671  // that pass manager. To prevent this we insert a no-op module pass to reset
672  // the pass manager to get the same behavior as EP_OptimizerLast in non-O0
673  // builds. The function merging pass is
674  if (MergeFunctions)
676  else if (GlobalExtensionsNotEmpty() || !Extensions.empty())
677  MPM.add(createBarrierNoopPass());
678 
679  if (PerformThinLTO) {
680  MPM.add(createLowerTypeTestsPass(nullptr, nullptr, true));
681  // Drop available_externally and unreferenced globals. This is necessary
682  // with ThinLTO in order to avoid leaving undefined references to dead
683  // globals in the object file.
685  MPM.add(createGlobalDCEPass());
686  }
687 
688  addExtensionsToPM(EP_EnabledOnOptLevel0, MPM);
689 
692  // Rename anon globals to be able to export them in the summary.
693  // This has to be done after we add the extensions to the pass manager
694  // as there could be passes (e.g. Adddress sanitizer) which introduce
695  // new unnamed globals.
697  }
698 
700  return;
701  }
702 
703  // Add LibraryInfo if we have some.
704  if (LibraryInfo)
706 
707  addInitialAliasAnalysisPasses(MPM);
708 
709  // For ThinLTO there are two passes of indirect call promotion. The
710  // first is during the compile phase when PerformThinLTO=false and
711  // intra-module indirect call targets are promoted. The second is during
712  // the ThinLTO backend when PerformThinLTO=true, when we promote imported
713  // inter-module indirect calls. For that we perform indirect call promotion
714  // earlier in the pass pipeline, here before globalopt. Otherwise imported
715  // available_externally functions look unreferenced and are removed.
716  if (PerformThinLTO) {
717  MPM.add(createPGOIndirectCallPromotionLegacyPass(/*InLTO = */ true,
718  !PGOSampleUse.empty()));
719  MPM.add(createLowerTypeTestsPass(nullptr, nullptr, true));
720  }
721 
722  // For SamplePGO in ThinLTO compile phase, we do not want to unroll loops
723  // as it will change the CFG too much to make the 2nd profile annotation
724  // in backend more difficult.
725  bool PrepareForThinLTOUsingPGOSampleProfile =
726  PrepareForThinLTO && !PGOSampleUse.empty();
727  if (PrepareForThinLTOUsingPGOSampleProfile)
728  DisableUnrollLoops = true;
729 
730  // Infer attributes about declarations if possible.
732 
733  // Infer attributes on declarations, call sites, arguments, etc.
736 
737  addExtensionsToPM(EP_ModuleOptimizerEarly, MPM);
738 
739  if (OptLevel > 2)
741 
742  MPM.add(createIPSCCPPass()); // IP SCCP
744 
745  MPM.add(createGlobalOptimizerPass()); // Optimize out global vars
746  // Promote any localized global vars.
748 
749  MPM.add(createDeadArgEliminationPass()); // Dead argument elimination
750 
751  MPM.add(createInstructionCombiningPass()); // Clean up after IPCP & DAE
752  addExtensionsToPM(EP_Peephole, MPM);
753  MPM.add(createCFGSimplificationPass()); // Clean up after IPCP & DAE
754 
755  // For SamplePGO in ThinLTO compile phase, we do not want to do indirect
756  // call promotion as it will change the CFG too much to make the 2nd
757  // profile annotation in backend more difficult.
758  // PGO instrumentation is added during the compile phase for ThinLTO, do
759  // not run it a second time
760  if (DefaultOrPreLinkPipeline && !PrepareForThinLTOUsingPGOSampleProfile)
761  addPGOInstrPasses(MPM);
762 
763  // Create profile COMDAT variables. Lld linker wants to see all variables
764  // before the LTO/ThinLTO link since it needs to resolve symbols/comdats.
767 
768  // We add a module alias analysis pass here. In part due to bugs in the
769  // analysis infrastructure this "works" in that the analysis stays alive
770  // for the entire SCC pass run below.
772 
773  // Start of CallGraph SCC passes.
774  MPM.add(createPruneEHPass()); // Remove dead EH info
775  bool RunInliner = false;
776  if (Inliner) {
777  MPM.add(Inliner);
778  Inliner = nullptr;
779  RunInliner = true;
780  }
781 
782  // Infer attributes on declarations, call sites, arguments, etc. for an SCC.
785 
786  // Try to perform OpenMP specific optimizations. This is a (quick!) no-op if
787  // there are no OpenMP runtime calls present in the module.
788  if (OptLevel > 1)
790 
792  if (OptLevel > 2)
793  MPM.add(createArgumentPromotionPass()); // Scalarize uninlined fn args
794 
795  addExtensionsToPM(EP_CGSCCOptimizerLate, MPM);
796  addFunctionSimplificationPasses(MPM);
797 
798  // FIXME: This is a HACK! The inliner pass above implicitly creates a CGSCC
799  // pass manager that we are specifically trying to avoid. To prevent this
800  // we must insert a no-op module pass to reset the pass manager.
801  MPM.add(createBarrierNoopPass());
802 
803  if (RunPartialInlining)
805 
806  if (OptLevel > 1 && !PrepareForLTO && !PrepareForThinLTO)
807  // Remove avail extern fns and globals definitions if we aren't
808  // compiling an object file for later LTO. For LTO we want to preserve
809  // these so they are eligible for inlining at link-time. Note if they
810  // are unreferenced they will be removed by GlobalDCE later, so
811  // this only impacts referenced available externally globals.
812  // Eventually they will be suppressed during codegen, but eliminating
813  // here enables more opportunity for GlobalDCE as it may make
814  // globals referenced by available external functions dead
815  // and saves running remaining passes on the eliminated functions.
817 
818  // CSFDO instrumentation and use pass. Don't invoke this for Prepare pass
819  // for LTO and ThinLTO -- The actual pass will be called after all inlines
820  // are performed.
821  // Need to do this after COMDAT variables have been eliminated,
822  // (i.e. after EliminateAvailableExternallyPass).
824  addPGOInstrPasses(MPM, /* IsCS */ true);
825 
828 
830 
831  // The inliner performs some kind of dead code elimination as it goes,
832  // but there are cases that are not really caught by it. We might
833  // at some point consider teaching the inliner about them, but it
834  // is OK for now to run GlobalOpt + GlobalDCE in tandem as their
835  // benefits generally outweight the cost, making the whole pipeline
836  // faster.
837  if (RunInliner) {
839  MPM.add(createGlobalDCEPass());
840  }
841 
842  // If we are planning to perform ThinLTO later, let's not bloat the code with
843  // unrolling/vectorization/... now. We'll first run the inliner + CGSCC passes
844  // during ThinLTO and perform the rest of the optimizations afterward.
845  if (PrepareForThinLTO) {
846  // Ensure we perform any last passes, but do so before renaming anonymous
847  // globals in case the passes add any.
848  addExtensionsToPM(EP_OptimizerLast, MPM);
850  // Rename anon globals to be able to export them in the summary.
852  return;
853  }
854 
855  if (PerformThinLTO)
856  // Optimize globals now when performing ThinLTO, this enables more
857  // optimizations later.
859 
860  // Scheduling LoopVersioningLICM when inlining is over, because after that
861  // we may see more accurate aliasing. Reason to run this late is that too
862  // early versioning may prevent further inlining due to increase of code
863  // size. By placing it just after inlining other optimizations which runs
864  // later might get benefit of no-alias assumption in clone loop.
865  if (UseLoopVersioningLICM) {
866  MPM.add(createLoopVersioningLICMPass()); // Do LoopVersioningLICM
868  }
869 
870  // We add a fresh GlobalsModRef run at this point. This is particularly
871  // useful as the above will have inlined, DCE'ed, and function-attr
872  // propagated everything. We should at this point have a reasonably minimal
873  // and richly annotated call graph. By computing aliasing and mod/ref
874  // information for all local globals here, the late loop passes and notably
875  // the vectorizer will be able to use them to help recognize vectorizable
876  // memory operations.
877  //
878  // Note that this relies on a bug in the pass manager which preserves
879  // a module analysis into a function pass pipeline (and throughout it) so
880  // long as the first function pass doesn't invalidate the module analysis.
881  // Thus both Float2Int and LoopRotate have to preserve AliasAnalysis for
882  // this to work. Fortunately, it is trivial to preserve AliasAnalysis
883  // (doing nothing preserves it as it is required to be conservatively
884  // correct in the face of IR changes).
886 
887  MPM.add(createFloat2IntPass());
889 
890  if (EnableMatrix) {
892  // CSE the pointer arithmetic of the column vectors. This allows alias
893  // analysis to establish no-aliasing between loads and stores of different
894  // columns of the same matrix.
895  MPM.add(createEarlyCSEPass(false));
896  }
897 
898  addExtensionsToPM(EP_VectorizerStart, MPM);
899 
900  // Re-rotate loops in all our loop nests. These may have fallout out of
901  // rotated form due to GVN or other transformations, and the vectorizer relies
902  // on the rotated form. Disable header duplication at -Oz.
903  MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1, PrepareForLTO));
904 
905  // Distribute loops to allow partial vectorization. I.e. isolate dependences
906  // into separate loop that would otherwise inhibit vectorization. This is
907  // currently only performed for loops marked with the metadata
908  // llvm.loop.distribute=true or when -enable-loop-distribute is specified.
910 
911  addVectorPasses(MPM, /* IsLTO */ false);
912 
913  // FIXME: We shouldn't bother with this anymore.
914  MPM.add(createStripDeadPrototypesPass()); // Get rid of dead prototypes
915 
916  // GlobalOpt already deletes dead functions and globals, at -O2 try a
917  // late pass of GlobalDCE. It is capable of deleting dead cycles.
918  if (OptLevel > 1) {
919  MPM.add(createGlobalDCEPass()); // Remove dead fns and globals.
920  MPM.add(createConstantMergePass()); // Merge dup global constants
921  }
922 
923  // See comment in the new PM for justification of scheduling splitting at
924  // this stage (\ref buildModuleSimplificationPipeline).
927 
928  if (EnableIROutliner)
929  MPM.add(createIROutlinerPass());
930 
931  if (MergeFunctions)
933 
934  // Add Module flag "CG Profile" based on Branch Frequency Information.
935  if (CallGraphProfile)
937 
938  // LoopSink pass sinks instructions hoisted by LICM, which serves as a
939  // canonicalization pass that enables other optimizations. As a result,
940  // LoopSink pass needs to be a very late IR pass to avoid undoing LICM
941  // result too early.
942  MPM.add(createLoopSinkPass());
943  // Get rid of LCSSA nodes.
945 
946  // This hoists/decomposes div/rem ops. It should run after other sink/hoist
947  // passes to avoid re-sinking, but before SimplifyCFG because it can allow
948  // flattening of blocks.
949  MPM.add(createDivRemPairsPass());
950 
951  // LoopSink (and other loop passes since the last simplifyCFG) might have
952  // resulted in single-entry-single-exit or empty blocks. Clean up the CFG.
954 
955  addExtensionsToPM(EP_OptimizerLast, MPM);
956 
957  if (PrepareForLTO) {
959  // Rename anon globals to be able to handle them in the summary
961  }
962 
964 }
965 
966 void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) {
967  // Load sample profile before running the LTO optimization pipeline.
968  if (!PGOSampleUse.empty()) {
969  PM.add(createPruneEHPass());
971  }
972 
973  // Remove unused virtual tables to improve the quality of code generated by
974  // whole-program devirtualization and bitset lowering.
975  PM.add(createGlobalDCEPass());
976 
977  // Provide AliasAnalysis services for optimizations.
978  addInitialAliasAnalysisPasses(PM);
979 
980  // Allow forcing function attributes as a debugging and tuning aid.
982 
983  // Infer attributes about declarations if possible.
985 
986  if (OptLevel > 1) {
987  // Split call-site with more constrained arguments.
989 
990  // Indirect call promotion. This should promote all the targets that are
991  // left by the earlier promotion pass that promotes intra-module targets.
992  // This two-step promotion is to save the compile time. For LTO, it should
993  // produce the same result as if we only do promotion here.
994  PM.add(
996 
997  // Propagate constants at call sites into the functions they call. This
998  // opens opportunities for globalopt (and inlining) by substituting function
999  // pointers passed as arguments to direct uses of functions.
1000  PM.add(createIPSCCPPass());
1001 
1002  // Attach metadata to indirect call sites indicating the set of functions
1003  // they may target at run-time. This should follow IPSCCP.
1005 
1006  // Infer attributes on declarations, call sites, arguments, etc.
1009  }
1010 
1011  // Infer attributes about definitions. The readnone attribute in particular is
1012  // required for virtual constant propagation.
1015 
1016  // Split globals using inrange annotations on GEP indices. This can help
1017  // improve the quality of generated code when virtual constant propagation or
1018  // control flow integrity are enabled.
1019  PM.add(createGlobalSplitPass());
1020 
1021  // Apply whole-program devirtualization and virtual constant propagation.
1023 
1024  // That's all we need at opt level 1.
1025  if (OptLevel == 1)
1026  return;
1027 
1028  // Now that we internalized some globals, see if we can hack on them!
1030  // Promote any localized global vars.
1032 
1033  // Linking modules together can lead to duplicated global constants, only
1034  // keep one copy of each constant.
1036 
1037  // Remove unused arguments from functions.
1039 
1040  // Reduce the code after globalopt and ipsccp. Both can open up significant
1041  // simplification opportunities, and both can propagate functions through
1042  // function pointers. When this happens, we often have to resolve varargs
1043  // calls, etc, so let instcombine do this.
1044  if (OptLevel > 2)
1047  addExtensionsToPM(EP_Peephole, PM);
1048 
1049  // Inline small functions
1050  bool RunInliner = Inliner;
1051  if (RunInliner) {
1052  PM.add(Inliner);
1053  Inliner = nullptr;
1054  }
1055 
1056  PM.add(createPruneEHPass()); // Remove dead EH info.
1057 
1058  // CSFDO instrumentation and use pass.
1059  addPGOInstrPasses(PM, /* IsCS */ true);
1060 
1061  // Infer attributes on declarations, call sites, arguments, etc. for an SCC.
1064 
1065  // Try to perform OpenMP specific optimizations. This is a (quick!) no-op if
1066  // there are no OpenMP runtime calls present in the module.
1067  if (OptLevel > 1)
1069 
1070  // Optimize globals again if we ran the inliner.
1071  if (RunInliner)
1073  PM.add(createGlobalDCEPass()); // Remove dead functions.
1074 
1075  // If we didn't decide to inline a function, check to see if we can
1076  // transform it to pass arguments by value instead of by reference.
1078 
1079  // The IPO passes may leave cruft around. Clean up after them.
1081  addExtensionsToPM(EP_Peephole, PM);
1082  PM.add(createJumpThreadingPass(/*FreezeSelectCond*/ true));
1083 
1084  // Break up allocas
1085  PM.add(createSROAPass());
1086 
1087  // LTO provides additional opportunities for tailcall elimination due to
1088  // link-time inlining, and visibility of nocapture attribute.
1089  if (OptLevel > 1)
1091 
1092  // Infer attributes on declarations, call sites, arguments, etc.
1093  PM.add(createPostOrderFunctionAttrsLegacyPass()); // Add nocapture.
1094  // Run a few AA driven optimizations here and now, to cleanup the code.
1095  PM.add(createGlobalsAAWrapperPass()); // IP alias analysis.
1096 
1098  PM.add(NewGVN ? createNewGVNPass()
1099  : createGVNPass(DisableGVNLoadPRE)); // Remove redundancies.
1100  PM.add(createMemCpyOptPass()); // Remove dead memcpys.
1101 
1102  // Nuke dead stores.
1104  PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds.
1105 
1106  // More loops are countable; try to optimize them.
1107  if (EnableLoopFlatten)
1108  PM.add(createLoopFlattenPass());
1113 
1116 
1117  // Unroll small loops and perform peeling.
1121 
1122  addVectorPasses(PM, /* IsLTO */ true);
1123 
1124  addExtensionsToPM(EP_Peephole, PM);
1125 
1126  PM.add(createJumpThreadingPass(/*FreezeSelectCond*/ true));
1127 }
1128 
1129 void PassManagerBuilder::addLateLTOOptimizationPasses(
1131  // See comment in the new PM for justification of scheduling splitting at
1132  // this stage (\ref buildLTODefaultPipeline).
1133  if (EnableHotColdSplit)
1135 
1136  // Delete basic blocks, which optimization passes may have killed.
1137  PM.add(
1138  createCFGSimplificationPass(SimplifyCFGOptions().hoistCommonInsts(true)));
1139 
1140  // Drop bodies of available externally objects to improve GlobalDCE.
1142 
1143  // Now that we have optimized the program, discard unreachable functions.
1144  PM.add(createGlobalDCEPass());
1145 
1146  // FIXME: this is profitable (for compiler time) to do at -O0 too, but
1147  // currently it damages debug info.
1148  if (MergeFunctions)
1150 }
1151 
1154  PerformThinLTO = true;
1155  if (LibraryInfo)
1157 
1158  if (VerifyInput)
1159  PM.add(createVerifierPass());
1160 
1161  if (ImportSummary) {
1162  // This pass imports type identifier resolutions for whole-program
1163  // devirtualization and CFI. It must run early because other passes may
1164  // disturb the specific instruction patterns that these passes look for,
1165  // creating dependencies on resolutions that may not appear in the summary.
1166  //
1167  // For example, GVN may transform the pattern assume(type.test) appearing in
1168  // two basic blocks into assume(phi(type.test, type.test)), which would
1169  // transform a dependency on a WPD resolution into a dependency on a type
1170  // identifier resolution for CFI.
1171  //
1172  // Also, WPD has access to more precise information than ICP and can
1173  // devirtualize more effectively, so it should operate on the IR first.
1176  }
1177 
1179 
1180  if (VerifyOutput)
1181  PM.add(createVerifierPass());
1182  PerformThinLTO = false;
1183 }
1184 
1186  if (LibraryInfo)
1188 
1189  if (VerifyInput)
1190  PM.add(createVerifierPass());
1191 
1192  addExtensionsToPM(EP_FullLinkTimeOptimizationEarly, PM);
1193 
1194  if (OptLevel != 0)
1195  addLTOOptimizationPasses(PM);
1196  else {
1197  // The whole-program-devirt pass needs to run at -O0 because only it knows
1198  // about the llvm.type.checked.load intrinsic: it needs to both lower the
1199  // intrinsic itself and handle it in the summary.
1201  }
1202 
1203  // Create a function that performs CFI checks for cross-DSO calls with targets
1204  // in the current module.
1205  PM.add(createCrossDSOCFIPass());
1206 
1207  // Lower type metadata and the type.test intrinsic. This pass supports Clang's
1208  // control flow integrity mechanisms (-fsanitize=cfi*) and needs to run at
1209  // link time if CFI is enabled. The pass does nothing if CFI is disabled.
1211  // Run a second time to clean up any type tests left behind by WPD for use
1212  // in ICP (which is performed earlier than this in the regular LTO pipeline).
1213  PM.add(createLowerTypeTestsPass(nullptr, nullptr, true));
1214 
1215  if (OptLevel != 0)
1216  addLateLTOOptimizationPasses(PM);
1217 
1218  addExtensionsToPM(EP_FullLinkTimeOptimizationLast, PM);
1219 
1221 
1222  if (VerifyOutput)
1223  PM.add(createVerifierPass());
1224 }
1225 
1228  return wrap(PMB);
1229 }
1230 
1233  delete Builder;
1234 }
1235 
1236 void
1238  unsigned OptLevel) {
1240  Builder->OptLevel = OptLevel;
1241 }
1242 
1243 void
1245  unsigned SizeLevel) {
1247  Builder->SizeLevel = SizeLevel;
1248 }
1249 
1250 void
1252  LLVMBool Value) {
1253  // NOTE: The DisableUnitAtATime switch has been removed.
1254 }
1255 
1256 void
1258  LLVMBool Value) {
1260  Builder->DisableUnrollLoops = Value;
1261 }
1262 
1263 void
1265  LLVMBool Value) {
1266  // NOTE: The simplify-libcalls pass has been removed.
1267 }
1268 
1269 void
1271  unsigned Threshold) {
1274 }
1275 
1276 void
1278  LLVMPassManagerRef PM) {
1280  legacy::FunctionPassManager *FPM = unwrap<legacy::FunctionPassManager>(PM);
1281  Builder->populateFunctionPassManager(*FPM);
1282 }
1283 
1284 void
1286  LLVMPassManagerRef PM) {
1289  Builder->populateModulePassManager(*MPM);
1290 }
1291 
1293  LLVMPassManagerRef PM,
1294  LLVMBool Internalize,
1295  LLVMBool RunInliner) {
1297  legacy::PassManagerBase *LPM = unwrap(PM);
1298 
1299  // A small backwards compatibility hack. populateLTOPassManager used to take
1300  // an RunInliner option.
1301  if (RunInliner && !Builder->Inliner)
1302  Builder->Inliner = createFunctionInliningPass();
1303 
1304  Builder->populateLTOPassManager(*LPM);
1305 }
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Definition: InstrProfiling.cpp:433
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Definition: PassManagerBuilder.h:174
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Definition: PassManagerBuilder.h:89
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Definition: AssumeBundleBuilder.cpp:606
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Definition: MergedLoadStoreMotion.cpp:401
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Definition: SimpleLoopUnswitch.cpp:3208
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Definition: PassManagerBuilder.h:188
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Definition: PassManagerBuilder.cpp:1277
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Definition: PassManagerBuilder.h:168
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Definition: SmallVector.h:1167
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Definition: LoopSimplifyCFG.cpp:771
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Definition: CommandLine.h:143
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Definition: SampleProfile.cpp:1828
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Definition: PassManagerBuilder.h:165
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Definition: PassManagerBuilder.cpp:1264
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Definition: PassManagerBuilder.h:155
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Definition: VectorCombine.cpp:1021
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Definition: LoopIdiomRecognize.cpp:345
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Definition: PassManagerBuilder.h:172
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Definition: DeadStoreElimination.cpp:2139
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Definition: PassManagerBuilder.h:68
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Definition: PassManagerBuilder.cpp:1231
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Definition: IndirectCallPromotion.cpp:160
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Definition: InstCombineCalls.cpp:97
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Definition: InlineCost.h:160
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Definition: BarrierNoopPass.cpp:43
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Definition: MemCpyOptimizer.cpp:301
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Definition: PassManagerBuilder.h:150
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llvm::CFLAAType::Both
@ Both
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FunctionPass * createGVNPass(bool NoMemDepAnalysis=false)
Create a legacy GVN pass.
Definition: GVN.cpp:3098
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Definition: Attributor.cpp:2644
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ModulePass * createCGProfileLegacyPass()
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Definition: CallSiteSplitting.cpp:575
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LegacyPassManager.h
PassManagerBuilder.h
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Pass * createInferFunctionAttrsLegacyPass()
Create a legacy pass manager instance of a pass to infer function attributes.
Definition: InferFunctionAttrs.cpp:90
llvm::createNameAnonGlobalPass
ModulePass * createNameAnonGlobalPass()
===------------------------------------------------------------------—===//
Definition: NameAnonGlobals.cpp:117
llvm::createControlHeightReductionLegacyPass
FunctionPass * createControlHeightReductionLegacyPass()
Definition: ControlHeightReduction.cpp:141
llvm::createStripDeadPrototypesPass
ModulePass * createStripDeadPrototypesPass()
createStripDeadPrototypesPass - This pass removes any function declarations (prototypes) that are not...
llvm::PassManagerBuilder::EP_LoopOptimizerEnd
@ EP_LoopOptimizerEnd
EP_LoopOptimizerEnd - This extension point allows adding loop passes to the end of the loop optimizer...
Definition: PassManagerBuilder.h:80
llvm::createAttributorCGSCCLegacyPass
Pass * createAttributorCGSCCLegacyPass()
Definition: Attributor.cpp:2645
llvm::createFloat2IntPass
FunctionPass * createFloat2IntPass()
Definition: Float2Int.cpp:539
llvm::createDivRemPairsPass
FunctionPass * createDivRemPairsPass()
Definition: DivRemPairs.cpp:384
llvm::createSLPVectorizerPass
Pass * createSLPVectorizerPass()
Definition: SLPVectorizer.cpp:8461
CommandLine.h
llvm::PassManagerBuilder::PGOInstrGen
std::string PGOInstrGen
Profile data file name that the instrumentation will be written to.
Definition: PassManagerBuilder.h:184
llvm::MODULE
@ MODULE
Definition: Attributor.h:3861
GlobalExtensions
static ManagedStatic< SmallVector< std::tuple< PassManagerBuilder::ExtensionPointTy, PassManagerBuilder::ExtensionFn, PassManagerBuilder::GlobalExtensionID >, 8 > > GlobalExtensions
Set of global extensions, automatically added as part of the standard set.
Definition: PassManagerBuilder.cpp:226
llvm::createLoopUnswitchPass
Pass * createLoopUnswitchPass(bool OptimizeForSize=false, bool hasBranchDivergence=false)
Definition: LoopUnswitch.cpp:412
LLVMPassManagerBuilderPopulateLTOPassManager
void LLVMPassManagerBuilderPopulateLTOPassManager(LLVMPassManagerBuilderRef PMB, LLVMPassManagerRef PM, LLVMBool Internalize, LLVMBool RunInliner)
See llvm::PassManagerBuilder::populateLTOPassManager.
Definition: PassManagerBuilder.cpp:1292
llvm::createForceFunctionAttrsLegacyPass
Pass * createForceFunctionAttrsLegacyPass()
Create a legacy pass manager instance of a pass to force function attrs.
llvm::FlattenedProfileUsed
cl::opt< bool > FlattenedProfileUsed
llvm::PassManagerBuilder::NewGVN
bool NewGVN
Definition: PassManagerBuilder.h:164
llvm::createLoopSinkPass
Pass * createLoopSinkPass()
llvm::PassManagerBuilder::addGlobalExtension
static GlobalExtensionID addGlobalExtension(ExtensionPointTy Ty, ExtensionFn Fn)
Adds an extension that will be used by all PassManagerBuilder instances.
Definition: PassManagerBuilder.cpp:237
llvm::createLoopInterchangePass
Pass * createLoopInterchangePass()
Definition: LoopInterchange.cpp:1764
llvm::createCanonicalizeAliasesPass
ModulePass * createCanonicalizeAliasesPass()
Definition: CanonicalizeAliases.cpp:102
llvm::PassManagerBuilder::LibraryInfo
TargetLibraryInfoImpl * LibraryInfo
LibraryInfo - Specifies information about the runtime library for the optimizer.
Definition: PassManagerBuilder.h:141
llvm::createWholeProgramDevirtPass
ModulePass * createWholeProgramDevirtPass(ModuleSummaryIndex *ExportSummary, const ModuleSummaryIndex *ImportSummary)
This pass implements whole-program devirtualization using type metadata.
Definition: WholeProgramDevirt.cpp:748
llvm::createLowerMatrixIntrinsicsPass
Pass * createLowerMatrixIntrinsicsPass()
Definition: LowerMatrixIntrinsics.cpp:2256
llvm::EnableSimpleLoopUnswitch
static cl::opt< bool > EnableSimpleLoopUnswitch("enable-simple-loop-unswitch", cl::init(false), cl::Hidden, cl::desc("Enable the simple loop unswitch pass. Also enables independent " "cleanup passes integrated into the loop pass manager pipeline."))
llvm::createLoopVersioningLICMPass
Pass * createLoopVersioningLICMPass()
Definition: LoopVersioningLICM.cpp:660
llvm::createGlobalSplitPass
ModulePass * createGlobalSplitPass()
This pass splits globals into pieces for the benefit of whole-program devirtualization and control-fl...
Definition: GlobalSplit.cpp:188
llvm::createNewGVNPass
FunctionPass * createNewGVNPass()
Definition: NewGVN.cpp:4207
llvm::createPGOInstrumentationGenCreateVarLegacyPass
ModulePass * createPGOInstrumentationGenCreateVarLegacyPass(StringRef CSInstrName=StringRef(""))
llvm::ManagedStatic
ManagedStatic - This transparently changes the behavior of global statics to be lazily constructed on...
Definition: ManagedStatic.h:83
IP
Definition: NVPTXLowerArgs.cpp:166
TargetLibraryInfo.h
llvm::DisableLibCallsShrinkWrap
static cl::opt< bool > DisableLibCallsShrinkWrap("disable-libcalls-shrinkwrap", cl::init(false), cl::Hidden, cl::desc("Disable shrink-wrap library calls"))
GlobalExtensionsCounter
static PassManagerBuilder::GlobalExtensionID GlobalExtensionsCounter
Definition: PassManagerBuilder.cpp:227
llvm::DisablePreInliner
cl::opt< bool > DisablePreInliner
llvm::createLibCallsShrinkWrapPass
FunctionPass * createLibCallsShrinkWrapPass()
Definition: LibCallsShrinkWrap.cpp:547
llvm::unwrap
Attribute unwrap(LLVMAttributeRef Attr)
Definition: Attributes.h:244
Options
const char LLVMTargetMachineRef LLVMPassBuilderOptionsRef Options
Definition: PassBuilderBindings.cpp:48
llvm::PassManagerBuilder::PrepareForThinLTO
bool PrepareForThinLTO
Definition: PassManagerBuilder.h:171
llvm::PassManagerBuilder::Inliner
Pass * Inliner
Inliner - Specifies the inliner to use.
Definition: PassManagerBuilder.h:145
llvm::PassManagerBuilder::MergeFunctions
bool MergeFunctions
Definition: PassManagerBuilder.h:169
llvm::createIndVarSimplifyPass
Pass * createIndVarSimplifyPass()
Definition: IndVarSimplify.cpp:1986
GVN.h
llvm::createAnnotationRemarksLegacyPass
FunctionPass * createAnnotationRemarksLegacyPass()
Definition: AnnotationRemarks.cpp:120
llvm::createGlobalOptimizerPass
ModulePass * createGlobalOptimizerPass()
createGlobalOptimizerPass - This function returns a new pass that optimizes non-address taken interna...
Definition: GlobalOpt.cpp:2704
llvm::createLoopDistributePass
FunctionPass * createLoopDistributePass()
llvm::createPGOMemOPSizeOptLegacyPass
FunctionPass * createPGOMemOPSizeOptLegacyPass()
llvm::PreInlineThreshold
cl::opt< int > PreInlineThreshold
llvm::PassManagerBuilder::LicmMssaNoAccForPromotionCap
unsigned LicmMssaNoAccForPromotionCap
Definition: PassManagerBuilder.h:175
CFLAndersAliasAnalysis.h
Utils.h
ScopedNoAliasAA.h
llvm::PassManagerBuilder::LoopsInterleaved
bool LoopsInterleaved
Definition: PassManagerBuilder.h:162
llvm::createHotColdSplittingPass
ModulePass * createHotColdSplittingPass()
createHotColdSplittingPass - This pass outlines cold blocks into a separate function(s).
Definition: HotColdSplitting.cpp:792
InstSimplifyPass.h
llvm::createSimpleLoopUnrollPass
Pass * createSimpleLoopUnrollPass(int OptLevel=2, bool OnlyWhenForced=false, bool ForgetAllSCEV=false)
Definition: LoopUnrollPass.cpp:1351
llvm::createFunctionInliningPass
Pass * createFunctionInliningPass()
createFunctionInliningPass - Return a new pass object that uses a heuristic to inline direct function...
Definition: InlineSimple.cpp:97
llvm::legacy::PassManagerBase::add
virtual void add(Pass *P)=0
Add a pass to the queue of passes to run.
llvm::EnablePrepareForThinLTO
static cl::opt< bool > EnablePrepareForThinLTO("prepare-for-thinlto", cl::init(false), cl::Hidden, cl::desc("Enable preparation for ThinLTO."))
LLVMPassManagerBuilderUseInlinerWithThreshold
void LLVMPassManagerBuilderUseInlinerWithThreshold(LLVMPassManagerBuilderRef PMB, unsigned Threshold)
See llvm::PassManagerBuilder::Inliner.
Definition: PassManagerBuilder.cpp:1270
llvm::PassManagerBuilder
PassManagerBuilder - This class is used to set up a standard optimization sequence for languages like...
Definition: PassManagerBuilder.h:59
llvm::cl::ZeroOrMore
@ ZeroOrMore
Definition: CommandLine.h:120
llvm::createGlobalsAAWrapperPass
ModulePass * createGlobalsAAWrapperPass()
Definition: GlobalsModRef.cpp:1021
llvm::createIPSCCPPass
ModulePass * createIPSCCPPass()
createIPSCCPPass - This pass propagates constants from call sites into the bodies of functions,...
Definition: SCCP.cpp:105
llvm::PassManagerBuilder::~PassManagerBuilder
~PassManagerBuilder()
Definition: PassManagerBuilder.cpp:215
ForceFunctionAttrs.h
llvm::cl::opt< bool >
Attributor.h
llvm::UseGVNAfterVectorization
static cl::opt< bool > UseGVNAfterVectorization("use-gvn-after-vectorization", cl::init(false), cl::Hidden, cl::desc("Run GVN instead of Early CSE after vectorization passes"))
llvm::createLoopRerollPass
Pass * createLoopRerollPass()
Definition: LoopRerollPass.cpp:506
llvm::CFLAAType::None
@ None
llvm::MipsISD::Ext
@ Ext
Definition: MipsISelLowering.h:156
llvm::cl::values
ValuesClass values(OptsTy... Options)
Helper to build a ValuesClass by forwarding a variable number of arguments as an initializer list to ...
Definition: CommandLine.h:699
llvm::createGVNHoistPass
FunctionPass * createGVNHoistPass()
Definition: GVNHoist.cpp:1261
llvm::RunLoopRerolling
static cl::opt< bool > RunLoopRerolling("reroll-loops", cl::Hidden, cl::desc("Run the loop rerolling pass"))
llvm::PassManagerBuilder::EP_ScalarOptimizerLate
@ EP_ScalarOptimizerLate
EP_ScalarOptimizerLate - This extension point allows adding optimization passes after most of the mai...
Definition: PassManagerBuilder.h:85
llvm::TargetLibraryInfoWrapperPass
Definition: TargetLibraryInfo.h:463
llvm::createReversePostOrderFunctionAttrsPass
Pass * createReversePostOrderFunctionAttrsPass()
createReversePostOrderFunctionAttrsPass - This pass walks SCCs of the call graph in RPO to deduce and...
Definition: FunctionAttrs.cpp:1734
llvm::createAggressiveInstCombinerPass
FunctionPass * createAggressiveInstCombinerPass()
Definition: AggressiveInstCombine.cpp:455
IPO.h
llvm::createGlobalDCEPass
ModulePass * createGlobalDCEPass()
createGlobalDCEPass - This transform is designed to eliminate unreachable internal globals (functions...
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::PassManagerBuilder::ExtensionFn
std::function< void(const PassManagerBuilder &Builder, legacy::PassManagerBase &PM)> ExtensionFn
Extensions are passed to the builder itself (so they can see how it is configured) as well as the pas...
Definition: PassManagerBuilder.h:65
llvm::numbers::e
constexpr double e
Definition: MathExtras.h:57
llvm::createLowerExpectIntrinsicPass
FunctionPass * createLowerExpectIntrinsicPass()
LLVMPassManagerBuilderRef
struct LLVMOpaquePassManagerBuilder * LLVMPassManagerBuilderRef
Definition: PassManagerBuilder.h:20
AggressiveInstCombine.h
llvm::PassManagerBuilder::RerollLoops
bool RerollLoops
Definition: PassManagerBuilder.h:163
llvm::cl::init
initializer< Ty > init(const Ty &Val)
Definition: CommandLine.h:443
llvm::EnableGVNSink
cl::opt< bool > EnableGVNSink
llvm::PassManagerBuilder::OptLevel
unsigned OptLevel
The Optimization Level - Specify the basic optimization level.
Definition: PassManagerBuilder.h:132
llvm::createCorrelatedValuePropagationPass
Pass * createCorrelatedValuePropagationPass()
Definition: CorrelatedValuePropagation.cpp:126
InferFunctionAttrs.h
SimpleLoopUnswitch.h
llvm::createPostOrderFunctionAttrsLegacyPass
Pass * createPostOrderFunctionAttrsLegacyPass()
Create a legacy pass manager instance of a pass to compute function attrs in post-order.
Definition: FunctionAttrs.cpp:1682
llvm::createPGOInstrumentationGenLegacyPass
ModulePass * createPGOInstrumentationGenLegacyPass(bool IsCS=false)
Definition: PGOInstrumentation.cpp:483
llvm::InstrProfOptions
Options for the frontend instrumentation based profiling pass.
Definition: Instrumentation.h:121
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::PassManagerBuilder::PGOInstrUse
std::string PGOInstrUse
Path of the profile data file.
Definition: PassManagerBuilder.h:186
llvm::PassManagerBuilder::GlobalExtensionID
int GlobalExtensionID
Definition: PassManagerBuilder.h:66
InlineCost.h
llvm::PassManagerBuilder::VerifyInput
bool VerifyInput
Definition: PassManagerBuilder.h:167
llvm::createTypeBasedAAWrapperPass
ImmutablePass * createTypeBasedAAWrapperPass()
llvm::EnableIROutliner
cl::opt< bool > EnableIROutliner
llvm::legacy::FunctionPassManager::add
void add(Pass *P) override
Add a pass to the queue of passes to run.
Definition: LegacyPassManager.cpp:1344
llvm::createArgumentPromotionPass
Pass * createArgumentPromotionPass(unsigned maxElements=3)
createArgumentPromotionPass - This pass promotes "by reference" arguments to be passed by value if th...
Definition: ArgumentPromotion.cpp:1105
Builder
assume Assume Builder
Definition: AssumeBundleBuilder.cpp:651
llvm::createSCCPPass
FunctionPass * createSCCPPass()
Definition: SCCP.cpp:294
LLVMPassManagerRef
struct LLVMOpaquePassManager * LLVMPassManagerRef
Definition: Types.h:127
llvm::CFLAAType::Steensgaard
@ Steensgaard
llvm::wrap
LLVMAttributeRef wrap(Attribute Attr)
Definition: Attributes.h:239
llvm::PassManagerBuilder::CallGraphProfile
bool CallGraphProfile
Definition: PassManagerBuilder.h:159
llvm::CGSCC
@ CGSCC
Definition: Attributor.h:3862
llvm::PassManagerBuilder::SLPVectorize
bool SLPVectorize
Definition: PassManagerBuilder.h:160
DataLayout.h
llvm::createIROutlinerPass
ModulePass * createIROutlinerPass()
createIROutlinerPass - This pass finds similar code regions and factors those regions out into functi...
Definition: IROutliner.cpp:1761
llvm::EnableLoopFlatten
cl::opt< bool > EnableLoopFlatten
clEnumValN
#define clEnumValN(ENUMVAL, FLAGNAME, DESC)
Definition: CommandLine.h:674
llvm::PassManagerBuilder::EP_Peephole
@ EP_Peephole
EP_Peephole - This extension point allows adding passes that perform peephole optimizations similar t...
Definition: PassManagerBuilder.h:104
llvm::createCalledValuePropagationPass
ModulePass * createCalledValuePropagationPass()
createCalledValuePropagationPass - Attach metadata to indirct call sites indicating the set of functi...
llvm::createVerifierPass
FunctionPass * createVerifierPass(bool FatalErrors=true)
Definition: Verifier.cpp:6209
llvm::createReassociatePass
FunctionPass * createReassociatePass()
llvm::PassManagerBuilder::PrepareForLTO
bool PrepareForLTO
Definition: PassManagerBuilder.h:170
LoopVectorize.h
llvm::find_if
auto find_if(R &&Range, UnaryPredicate P)
Provide wrappers to std::find_if which take ranges instead of having to pass begin/end explicitly.
Definition: STLExtras.h:1509
LLVMPassManagerBuilderSetOptLevel
void LLVMPassManagerBuilderSetOptLevel(LLVMPassManagerBuilderRef PMB, unsigned OptLevel)
See llvm::PassManagerBuilder::OptLevel.
Definition: PassManagerBuilder.cpp:1237
llvm::ForgetSCEVInLoopUnroll
cl::opt< bool > ForgetSCEVInLoopUnroll
SLPVectorizer.h
Verifier.h
llvm::createAggressiveDCEPass
FunctionPass * createAggressiveDCEPass()
Definition: ADCE.cpp:752
llvm::PassManagerBuilder::removeGlobalExtension
static void removeGlobalExtension(GlobalExtensionID ExtensionID)
Removes an extension that was previously added using addGlobalExtension.
Definition: PassManagerBuilder.cpp:244
LLVMPassManagerBuilderSetSizeLevel
void LLVMPassManagerBuilderSetSizeLevel(LLVMPassManagerBuilderRef PMB, unsigned SizeLevel)
See llvm::PassManagerBuilder::SizeLevel.
Definition: PassManagerBuilder.cpp:1244
LLVMBool
int LLVMBool
Definition: Types.h:28
llvm::PassManagerBuilder::EP_VectorizerStart
@ EP_VectorizerStart
EP_VectorizerStart - This extension point allows adding optimization passes before the vectorizer and...
Definition: PassManagerBuilder.h:94
llvm::EnableCHR
cl::opt< bool > EnableCHR
LoopUnrollPass.h
llvm::PassManagerBuilder::EnablePGOInstrGen
bool EnablePGOInstrGen
Enable profile instrumentation pass.
Definition: PassManagerBuilder.h:178
llvm::createScopedNoAliasAAWrapperPass
ImmutablePass * createScopedNoAliasAAWrapperPass()
llvm::createBitTrackingDCEPass
FunctionPass * createBitTrackingDCEPass()
Definition: BDCE.cpp:205
llvm::createAlignmentFromAssumptionsPass
FunctionPass * createAlignmentFromAssumptionsPass()
Definition: AlignmentFromAssumptions.cpp:86
LLVMPassManagerBuilderSetDisableUnitAtATime
void LLVMPassManagerBuilderSetDisableUnitAtATime(LLVMPassManagerBuilderRef PMB, LLVMBool Value)
See llvm::PassManagerBuilder::DisableUnitAtATime.
Definition: PassManagerBuilder.cpp:1251
llvm::PassManagerBuilder::populateModulePassManager
void populateModulePassManager(legacy::PassManagerBase &MPM)
populateModulePassManager - This sets up the primary pass manager.
Definition: PassManagerBuilder.cpp:640
llvm::PassManagerBuilder::EP_FullLinkTimeOptimizationLast
@ EP_FullLinkTimeOptimizationLast
EP_FullLinkTimeOptimizationLast - This extensions point allow adding passes that run at Link Time,...
Definition: PassManagerBuilder.h:127
llvm::PassManagerBuilder::EP_ModuleOptimizerEarly
@ EP_ModuleOptimizerEarly
EP_ModuleOptimizerEarly - This extension point allows adding passes just before the main module-level...
Definition: PassManagerBuilder.h:76
llvm::TargetStackID::Value
Value
Definition: TargetFrameLowering.h:27
llvm::createLoopRotatePass
Pass * createLoopRotatePass(int MaxHeaderSize=-1, bool PrepareForLTO=false)
Definition: LoopRotation.cpp:156
LLVMPassManagerBuilderSetDisableUnrollLoops
void LLVMPassManagerBuilderSetDisableUnrollLoops(LLVMPassManagerBuilderRef PMB, LLVMBool Value)
See llvm::PassManagerBuilder::DisableUnrollLoops.
Definition: PassManagerBuilder.cpp:1257
PassManagerBuilder.h
llvm::PassManagerBuilder::SizeLevel
unsigned SizeLevel
SizeLevel - How much we're optimizing for size.
Definition: PassManagerBuilder.h:136
llvm::createInstSimplifyLegacyPass
FunctionPass * createInstSimplifyLegacyPass()
Definition: InstSimplifyPass.cpp:129
llvm::UseLoopVersioningLICM
static cl::opt< bool > UseLoopVersioningLICM("enable-loop-versioning-licm", cl::init(false), cl::Hidden, cl::desc("Enable the experimental Loop Versioning LICM pass"))
llvm::EnablePerformThinLTO
static cl::opt< bool > EnablePerformThinLTO("perform-thinlto", cl::init(false), cl::Hidden, cl::desc("Enable performing ThinLTO."))
llvm::PassManagerBuilder::EP_LateLoopOptimizations
@ EP_LateLoopOptimizations
EP_LateLoopOptimizations - This extension point allows adding late loop canonicalization and simplifi...
Definition: PassManagerBuilder.h:112
llvm::createLoopInstSimplifyPass
Pass * createLoopInstSimplifyPass()
Definition: LoopInstSimplify.cpp:255
llvm::PassManagerBuilder::EnablePGOCSInstrGen
bool EnablePGOCSInstrGen
Enable profile context sensitive instrumentation pass.
Definition: PassManagerBuilder.h:180
LLVMPassManagerBuilderCreate
LLVMPassManagerBuilderRef LLVMPassManagerBuilderCreate()
See llvm::PassManagerBuilder.
Definition: PassManagerBuilder.cpp:1226
llvm::createPromoteMemoryToRegisterPass
FunctionPass * createPromoteMemoryToRegisterPass()
Definition: Mem2Reg.cpp:114
llvm::PassManagerBuilder::EnablePGOCSInstrUse
bool EnablePGOCSInstrUse
Enable profile context sensitive profile use pass.
Definition: PassManagerBuilder.h:182
llvm::createInstructionCombiningPass
FunctionPass * createInstructionCombiningPass()
Definition: InstructionCombining.cpp:4134
LLVMPassManagerBuilderPopulateModulePassManager
void LLVMPassManagerBuilderPopulateModulePassManager(LLVMPassManagerBuilderRef PMB, LLVMPassManagerRef PM)
See llvm::PassManagerBuilder::populateModulePassManager.
Definition: PassManagerBuilder.cpp:1285
llvm::createEliminateAvailableExternallyPass
ModulePass * createEliminateAvailableExternallyPass()
This transform is designed to eliminate available external globals (functions or global variables)
llvm::PassManagerBuilder::populateFunctionPassManager
void populateFunctionPassManager(legacy::FunctionPassManager &FPM)
populateFunctionPassManager - This fills in the function pass manager, which is expected to be run on...
Definition: PassManagerBuilder.cpp:302
llvm::SimplifyCFGOptions
Definition: SimplifyCFGOptions.h:23
llvm::createLICMPass
Pass * createLICMPass()
Definition: LICM.cpp:309
llvm::PassManagerBuilder::DisableUnrollLoops
bool DisableUnrollLoops
Definition: PassManagerBuilder.h:158
llvm::createConstraintEliminationPass
FunctionPass * createConstraintEliminationPass()
Definition: ConstraintElimination.cpp:516
llvm::PassManagerBuilder::EP_EarlyAsPossible
@ EP_EarlyAsPossible
EP_EarlyAsPossible - This extension point allows adding passes before any other transformations,...
Definition: PassManagerBuilder.h:72
SmallVector.h
llvm::NONE
@ NONE
Definition: Attributor.h:3860
llvm::createLowerConstantIntrinsicsPass
FunctionPass * createLowerConstantIntrinsicsPass()
Definition: LowerConstantIntrinsics.cpp:197
llvm::createConstantMergePass
ModulePass * createConstantMergePass()
createConstantMergePass - This function returns a new pass that merges duplicate global constants tog...
llvm::legacy::FunctionPassManager
FunctionPassManager manages FunctionPasses.
Definition: LegacyPassManager.h:71
llvm::PassManagerBuilder::EP_EnabledOnOptLevel0
@ EP_EnabledOnOptLevel0
EP_EnabledOnOptLevel0 - This extension point allows adding passes that should not be disabled by O0 o...
Definition: PassManagerBuilder.h:99
llvm::createLoopFlattenPass
FunctionPass * createLoopFlattenPass()
Definition: LoopFlatten.cpp:721
llvm::createInstrOrderFilePass
ModulePass * createInstrOrderFilePass()
Definition: InstrOrderFile.cpp:210
llvm::legacy::PassManagerBase
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
Definition: LegacyPassManager.h:39
Threshold
static cl::opt< unsigned > Threshold("loop-unswitch-threshold", cl::desc("Max loop size to unswitch"), cl::init(100), cl::Hidden)
LICM.h
llvm::EnableLoopInterchange
cl::opt< bool > EnableLoopInterchange
Vectorize.h
llvm::EnableUnrollAndJam
cl::opt< bool > EnableUnrollAndJam
llvm::createPartialInliningPass
ModulePass * createPartialInliningPass()
createPartialInliningPass - This pass inlines parts of functions.
Definition: PartialInlining.cpp:1524
llvm::createWarnMissedTransformationsPass
Pass * createWarnMissedTransformationsPass()
Definition: WarnMissedTransforms.cpp:148
llvm::AttributorRun
cl::opt< AttributorRunOption > AttributorRun
llvm::PassManagerBuilder::addExtension
void addExtension(ExtensionPointTy Ty, ExtensionFn Fn)
Definition: PassManagerBuilder.cpp:261
llvm::PassManagerBuilder::populateThinLTOPassManager
void populateThinLTOPassManager(legacy::PassManagerBase &PM)
Definition: PassManagerBuilder.cpp:1152
llvm::PassManagerBuilder::EP_FullLinkTimeOptimizationEarly
@ EP_FullLinkTimeOptimizationEarly
EP_FullLinkTimeOptimizationEarly - This extensions point allow adding passes that run at Link Time,...
Definition: PassManagerBuilder.h:122
InstCombine.h
llvm::createSpeculativeExecutionIfHasBranchDivergencePass
FunctionPass * createSpeculativeExecutionIfHasBranchDivergencePass()
Definition: SpeculativeExecution.cpp:329
llvm::cl::desc
Definition: CommandLine.h:414
llvm::createLowerMatrixIntrinsicsMinimalPass
Pass * createLowerMatrixIntrinsicsMinimalPass()
Definition: LowerMatrixIntrinsics.cpp:2298
llvm::PassManagerBuilder::DivergentTarget
bool DivergentTarget
Definition: PassManagerBuilder.h:173
llvm::PassManagerBuilder::EP_CGSCCOptimizerLate
@ EP_CGSCCOptimizerLate
EP_CGSCCOptimizerLate - This extension point allows adding CallGraphSCC passes at the end of the main...
Definition: PassManagerBuilder.h:117
llvm::SetLicmMssaOptCap
cl::opt< unsigned > SetLicmMssaOptCap
llvm::createLoopDeletionPass
Pass * createLoopDeletionPass()
Definition: LoopDeletion.cpp:326
llvm::createSROAPass
FunctionPass * createSROAPass()
Definition: SROA.cpp:4828
MPM
ModulePassManager MPM
Definition: PassBuilderBindings.cpp:70
llvm::Value
LLVM Value Representation.
Definition: Value.h:75
FunctionAttrs.h
CFLSteensAliasAnalysis.h
llvm::createLoopUnrollAndJamPass
Pass * createLoopUnrollAndJamPass(int OptLevel=2)
Definition: LoopUnrollAndJamPass.cpp:517
llvm::createJumpThreadingPass
FunctionPass * createJumpThreadingPass(bool FreezeSelectCond=false, int Threshold=-1)
Definition: JumpThreading.cpp:178
llvm::createLoopVectorizePass
Pass * createLoopVectorizePass()
Definition: LoopVectorize.cpp:7846
GlobalExtensionsNotEmpty
static bool GlobalExtensionsNotEmpty()
Check if GlobalExtensions is constructed and not empty.
Definition: PassManagerBuilder.cpp:232
llvm::createLoopUnrollPass
Pass * createLoopUnrollPass(int OptLevel=2, bool OnlyWhenForced=false, bool ForgetAllSCEV=false, int Threshold=-1, int Count=-1, int AllowPartial=-1, int Runtime=-1, int UpperBound=-1, int AllowPeeling=-1)
Definition: LoopUnrollPass.cpp:1334
llvm::createAnnotation2MetadataLegacyPass
ModulePass * createAnnotation2MetadataLegacyPass()
Definition: Annotation2Metadata.cpp:98
llvm::createOpenMPOptCGSCCLegacyPass
Pass * createOpenMPOptCGSCCLegacyPass()
createOpenMPOptLegacyPass - OpenMP specific optimizations.
Definition: OpenMPOpt.cpp:2695
Passes.h
llvm::EnableGVNHoist
cl::opt< bool > EnableGVNHoist