1 files changed, 0 insertions, 126 deletions
diff --git a/contrib/llvm/lib/Transforms/Scalar/LoopRotation.cpp b/contrib/llvm/lib/Transforms/Scalar/LoopRotation.cpp
deleted file mode 100644
index e009947690af..000000000000
--- a/contrib/llvm/lib/Transforms/Scalar/LoopRotation.cpp
+++ /dev/null
@@ -1,126 +0,0 @@
-//===- LoopRotation.cpp - Loop Rotation Pass ------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements Loop Rotation Pass.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Scalar/LoopRotation.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Analysis/InstructionSimplify.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/MemorySSA.h"
-#include "llvm/Analysis/MemorySSAUpdater.h"
-#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/LoopPassManager.h"
-#include "llvm/Transforms/Utils/LoopRotationUtils.h"
-#include "llvm/Transforms/Utils/LoopUtils.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "loop-rotate"
-
-static cl::opt<unsigned> DefaultRotationThreshold(
-    "rotation-max-header-size", cl::init(16), cl::Hidden,
-    cl::desc("The default maximum header size for automatic loop rotation"));
-
-LoopRotatePass::LoopRotatePass(bool EnableHeaderDuplication)
-    : EnableHeaderDuplication(EnableHeaderDuplication) {}
-
-PreservedAnalyses LoopRotatePass::run(Loop &L, LoopAnalysisManager &AM,
-                                      LoopStandardAnalysisResults &AR,
-                                      LPMUpdater &) {
-  int Threshold = EnableHeaderDuplication ? DefaultRotationThreshold : 0;
-  const DataLayout &DL = L.getHeader()->getModule()->getDataLayout();
-  const SimplifyQuery SQ = getBestSimplifyQuery(AR, DL);
-
-  Optional<MemorySSAUpdater> MSSAU;
-  if (AR.MSSA)
-    MSSAU = MemorySSAUpdater(AR.MSSA);
-  bool Changed = LoopRotation(&L, &AR.LI, &AR.TTI, &AR.AC, &AR.DT, &AR.SE,
-                              MSSAU.hasValue() ? MSSAU.getPointer() : nullptr,
-                              SQ, false, Threshold, false);
-
-  if (!Changed)
-    return PreservedAnalyses::all();
-
-  if (AR.MSSA && VerifyMemorySSA)
-    AR.MSSA->verifyMemorySSA();
-
-  auto PA = getLoopPassPreservedAnalyses();
-  if (EnableMSSALoopDependency)
-    PA.preserve<MemorySSAAnalysis>();
-  return PA;
-}
-
-namespace {
-
-class LoopRotateLegacyPass : public LoopPass {
-  unsigned MaxHeaderSize;
-
-public:
-  static char ID; // Pass ID, replacement for typeid
-  LoopRotateLegacyPass(int SpecifiedMaxHeaderSize = -1) : LoopPass(ID) {
-    initializeLoopRotateLegacyPassPass(*PassRegistry::getPassRegistry());
-    if (SpecifiedMaxHeaderSize == -1)
-      MaxHeaderSize = DefaultRotationThreshold;
-    else
-      MaxHeaderSize = unsigned(SpecifiedMaxHeaderSize);
-  }
-
-  // LCSSA form makes instruction renaming easier.
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<AssumptionCacheTracker>();
-    AU.addRequired<TargetTransformInfoWrapperPass>();
-    if (EnableMSSALoopDependency) {
-      AU.addRequired<MemorySSAWrapperPass>();
-      AU.addPreserved<MemorySSAWrapperPass>();
-    }
-    getLoopAnalysisUsage(AU);
-  }
-
-  bool runOnLoop(Loop *L, LPPassManager &LPM) override {
-    if (skipLoop(L))
-      return false;
-    Function &F = *L->getHeader()->getParent();
-
-    auto *LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
-    const auto *TTI = &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
-    auto *AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
-    auto *DTWP = getAnalysisIfAvailable<DominatorTreeWrapperPass>();
-    auto *DT = DTWP ? &DTWP->getDomTree() : nullptr;
-    auto *SEWP = getAnalysisIfAvailable<ScalarEvolutionWrapperPass>();
-    auto *SE = SEWP ? &SEWP->getSE() : nullptr;
-    const SimplifyQuery SQ = getBestSimplifyQuery(*this, F);
-    Optional<MemorySSAUpdater> MSSAU;
-    if (EnableMSSALoopDependency) {
-      MemorySSA *MSSA = &getAnalysis<MemorySSAWrapperPass>().getMSSA();
-      MSSAU = MemorySSAUpdater(MSSA);
-    }
-    return LoopRotation(L, LI, TTI, AC, DT, SE,
-                        MSSAU.hasValue() ? MSSAU.getPointer() : nullptr, SQ,
-                        false, MaxHeaderSize, false);
-  }
-};
-}
-
-char LoopRotateLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(LoopRotateLegacyPass, "loop-rotate", "Rotate Loops",
-                      false, false)
-INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
-INITIALIZE_PASS_DEPENDENCY(LoopPass)
-INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(MemorySSAWrapperPass)
-INITIALIZE_PASS_END(LoopRotateLegacyPass, "loop-rotate", "Rotate Loops", false,
-                    false)
-
-Pass *llvm::createLoopRotatePass(int MaxHeaderSize) {
-  return new LoopRotateLegacyPass(MaxHeaderSize);
-}