Removed legacy Pass

Since we're not adding to the codegen pipeline anymore

Author: mshockwave

llvm/include/llvm/CodeGen/EVLIndVarSimplify.h

@@ -20,15 +20,12 @@
 namespace llvm {
 class Loop;
 class LPMUpdater;
-class Pass;
 
 /// Turn vectorized loops with canonical induction variables into loops that
 /// only use a single EVL-based induction variable.
 struct EVLIndVarSimplifyPass : public PassInfoMixin<EVLIndVarSimplifyPass> {
   PreservedAnalyses run(Loop &L, LoopAnalysisManager &LAM,
                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
 };
-
-Pass *createEVLIndVarSimplifyPass();
 } // namespace llvm
 #endif

llvm/include/llvm/InitializePasses.h

@@ -113,7 +113,6 @@ void initializeExpandReductionsPass(PassRegistry &);
 void initializeExpandVariadicsPass(PassRegistry &);
 void initializeExpandVectorPredicationPass(PassRegistry &);
 void initializeExternalAAWrapperPassPass(PassRegistry &);
-void initializeEVLIndVarSimplifyPass(PassRegistry &);
 void initializeFEntryInserterPass(PassRegistry &);
 void initializeFinalizeISelPass(PassRegistry &);
 void initializeFinalizeMachineBundlesPass(PassRegistry &);

llvm/lib/CodeGen/EVLIndVarSimplify.cpp

@@ -21,8 +21,6 @@
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/PatternMatch.h"
-#include "llvm/InitializePasses.h"
-#include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/MathExtras.h"
@@ -54,21 +52,6 @@ struct EVLIndVarSimplifyImpl {
   // Returns true if modify the loop.
   bool run(Loop &L);
 };
-
-struct EVLIndVarSimplify : public LoopPass {
-  static char ID;
-
-  EVLIndVarSimplify() : LoopPass(ID) {
-    initializeEVLIndVarSimplifyPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool runOnLoop(Loop *L, LPPassManager &LPM) override;
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<ScalarEvolutionWrapperPass>();
-    AU.setPreservesCFG();
-  }
-};
 } // anonymous namespace
 
 static uint32_t getVFFromIndVar(const SCEV *Step, const Function &F) {
@@ -251,21 +234,3 @@ PreservedAnalyses EVLIndVarSimplifyPass::run(Loop &L, LoopAnalysisManager &LAM,
     return PreservedAnalyses::allInSet<CFGAnalyses>();
   return PreservedAnalyses::all();
 }
-
-char EVLIndVarSimplify::ID = 0;
-
-INITIALIZE_PASS_BEGIN(EVLIndVarSimplify, DEBUG_TYPE,
-                      "EVL-based Induction Variables Simplify", false, false)
-INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
-INITIALIZE_PASS_END(EVLIndVarSimplify, DEBUG_TYPE,
-                    "EVL-based Induction Variables Simplify", false, false)
-
-bool EVLIndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
-  if (skipLoop(L))
-    return false;
-
-  auto &SE = getAnalysis<ScalarEvolutionWrapperPass>().getSE();
-  return EVLIndVarSimplifyImpl(SE).run(*L);
-}
-
-Pass *llvm::createEVLIndVarSimplifyPass() { return new EVLIndVarSimplify(); }