[Passes] Remove the legacy DemandedBitsWrapperPass

Last user of DemandedBitsWrapperPass was the BDCE pass. Since
the legacy PM version of BDCE was removed in an earlier commit, this
patch removes the now unused DemandedBitsWrapperPass.

Differential Revision: https://reviews.llvm.org/D148336

diff --git a/llvm/include/llvm/Analysis/DemandedBits.h b/llvm/include/llvm/Analysis/DemandedBits.h
index 1a2e723..d7709b7 100644 (file)
--- a/llvm/include/llvm/Analysis/DemandedBits.h
+++ b/llvm/include/llvm/Analysis/DemandedBits.h
@@ -25,7 +25,6 @@
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/IR/PassManager.h"
-#include "llvm/Pass.h"
 #include <optional>
 
 namespace llvm {
@@ -99,26 +98,6 @@ private:
   SmallPtrSet<Use *, 16> DeadUses;
 };
 
-class DemandedBitsWrapperPass : public FunctionPass {
-private:
-  mutable std::optional<DemandedBits> DB;
-
-public:
-  static char ID; // Pass identification, replacement for typeid
-
-  DemandedBitsWrapperPass();
-
-  bool runOnFunction(Function &F) override;
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-
-  /// Clean up memory in between runs
-  void releaseMemory() override;
-
-  DemandedBits &getDemandedBits() { return *DB; }
-
-  void print(raw_ostream &OS, const Module *M) const override;
-};
-
 /// An analysis that produces \c DemandedBits for a function.
 class DemandedBitsAnalysis : public AnalysisInfoMixin<DemandedBitsAnalysis> {
   friend AnalysisInfoMixin<DemandedBitsAnalysis>;
@@ -144,9 +123,6 @@ public:
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };
 
-/// Create a demanded bits analysis pass.
-FunctionPass *createDemandedBitsWrapperPass();
-
 } // end namespace llvm
 
 #endif // LLVM_ANALYSIS_DEMANDEDBITS_H

diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 23acfa7..2891e74 100644 (file)
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -102,7 +102,6 @@ void initializeDSELegacyPassPass(PassRegistry&);
 void initializeDeadMachineInstructionElimPass(PassRegistry&);
 void initializeDebugifyMachineModulePass(PassRegistry &);
 void initializeDelinearizationPass(PassRegistry&);
-void initializeDemandedBitsWrapperPassPass(PassRegistry&);
 void initializeDependenceAnalysisWrapperPassPass(PassRegistry&);
 void initializeDetectDeadLanesPass(PassRegistry&);
 void initializeDomOnlyPrinterWrapperPassPass(PassRegistry &);

diff --git a/llvm/lib/Analysis/Analysis.cpp b/llvm/lib/Analysis/Analysis.cpp
index 2729182..9a9d268 100644 (file)
--- a/llvm/lib/Analysis/Analysis.cpp
+++ b/llvm/lib/Analysis/Analysis.cpp
@@ -34,7 +34,6 @@ void llvm::initializeAnalysis(PassRegistry &Registry) {
   initializeCycleInfoWrapperPassPass(Registry);
   initializeDependenceAnalysisWrapperPassPass(Registry);
   initializeDelinearizationPass(Registry);
-  initializeDemandedBitsWrapperPassPass(Registry);
   initializeDominanceFrontierWrapperPassPass(Registry);
   initializeDomViewerWrapperPassPass(Registry);
   initializeDomPrinterWrapperPassPass(Registry);

diff --git a/llvm/lib/Analysis/DemandedBits.cpp b/llvm/lib/Analysis/DemandedBits.cpp
index 35c5217..a67a754 100644 (file)
--- a/llvm/lib/Analysis/DemandedBits.cpp
+++ b/llvm/lib/Analysis/DemandedBits.cpp
@@ -34,8 +34,6 @@
 #include "llvm/IR/PatternMatch.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Use.h"
-#include "llvm/InitializePasses.h"
-#include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/KnownBits.h"
@@ -48,30 +46,6 @@ using namespace llvm::PatternMatch;
 
 #define DEBUG_TYPE "demanded-bits"
 
-char DemandedBitsWrapperPass::ID = 0;
-
-INITIALIZE_PASS_BEGIN(DemandedBitsWrapperPass, "demanded-bits",
-                      "Demanded bits analysis", false, false)
-INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
-INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_PASS_END(DemandedBitsWrapperPass, "demanded-bits",
-                    "Demanded bits analysis", false, false)
-
-DemandedBitsWrapperPass::DemandedBitsWrapperPass() : FunctionPass(ID) {
-  initializeDemandedBitsWrapperPassPass(*PassRegistry::getPassRegistry());
-}
-
-void DemandedBitsWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesCFG();
-  AU.addRequired<AssumptionCacheTracker>();
-  AU.addRequired<DominatorTreeWrapperPass>();
-  AU.setPreservesAll();
-}
-
-void DemandedBitsWrapperPass::print(raw_ostream &OS, const Module *M) const {
-  DB->print(OS);
-}
-
 static bool isAlwaysLive(Instruction *I) {
   return I->isTerminator() || isa<DbgInfoIntrinsic>(I) || I->isEHPad() ||
          I->mayHaveSideEffects();
@@ -310,17 +284,6 @@ void DemandedBits::determineLiveOperandBits(
   }
 }
 
-bool DemandedBitsWrapperPass::runOnFunction(Function &F) {
-  auto &AC = getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
-  auto &DT = getAnalysis<DominatorTreeWrapperPass>().getDomTree();
-  DB.emplace(F, AC, DT);
-  return false;
-}
-
-void DemandedBitsWrapperPass::releaseMemory() {
-  DB.reset();
-}
-
 void DemandedBits::performAnalysis() {
   if (Analyzed)
     // Analysis already completed for this function.
@@ -605,10 +568,6 @@ APInt DemandedBits::determineLiveOperandBitsSub(unsigned OperandNo,
                                           true);
 }
 
-FunctionPass *llvm::createDemandedBitsWrapperPass() {
-  return new DemandedBitsWrapperPass();
-}
-
 AnalysisKey DemandedBitsAnalysis::Key;
 
 DemandedBits DemandedBitsAnalysis::run(Function &F,

diff --git a/llvm/lib/CodeGen/ReplaceWithVeclib.cpp b/llvm/lib/CodeGen/ReplaceWithVeclib.cpp
index 87b8ac5..86a632d 100644 (file)
--- a/llvm/lib/CodeGen/ReplaceWithVeclib.cpp
+++ b/llvm/lib/CodeGen/ReplaceWithVeclib.cpp
@@ -230,7 +230,6 @@ void ReplaceWithVeclibLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<ScalarEvolutionWrapperPass>();
   AU.addPreserved<AAResultsWrapperPass>();
   AU.addPreserved<LoopAccessLegacyAnalysis>();
-  AU.addPreserved<DemandedBitsWrapperPass>();
   AU.addPreserved<OptimizationRemarkEmitterWrapperPass>();
   AU.addPreserved<GlobalsAAWrapperPass>();
 }

diff --git a/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp b/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
index 873c322..1569260 100644 (file)
--- a/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
+++ b/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
@@ -159,7 +159,6 @@ void InjectTLIMappingsLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<ScalarEvolutionWrapperPass>();
   AU.addPreserved<AAResultsWrapperPass>();
   AU.addPreserved<LoopAccessLegacyAnalysis>();
-  AU.addPreserved<DemandedBitsWrapperPass>();
   AU.addPreserved<OptimizationRemarkEmitterWrapperPass>();
   AU.addPreserved<GlobalsAAWrapperPass>();
 }