From d53504e37999771f4ce621c081cc3da42ea1c84d Mon Sep 17 00:00:00 2001
From: Amjad Aboud <amjad.aboud@intel.com>
Date: Wed, 24 Jan 2018 14:48:49 +0000
Subject: Reverted 323321.

llvm-svn: 323326
---
 .../AggressiveInstCombine.cpp                      | 110 ---------------------
 1 file changed, 110 deletions(-)
 delete mode 100644 llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp

(limited to 'llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp')

diff --git a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp b/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
deleted file mode 100644
index b7364d2ecdf..00000000000
--- a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-//===- AggressiveInstCombine.cpp ------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the aggressive expression pattern combiner classes.
-// Currently, it handles expression patterns for:
-//  * Truncate instruction
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h"
-#include "AggressiveInstCombineInternal.h"
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
-#include "llvm/Analysis/GlobalsModRef.h"
-#include "llvm/Analysis/TargetLibraryInfo.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/Pass.h"
-#include "llvm/Transforms/Scalar.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "aggressive-instcombine"
-
-namespace {
-/// Contains expression pattern combiner logic.
-/// This class provides both the logic to combine expression patterns and
-/// combine them. It differs from InstCombiner class in that each pattern
-/// combiner runs only once as opposed to InstCombine's multi-iteration,
-/// which allows pattern combiner to have higher complexity than the O(1)
-/// required by the instruction combiner.
-class AggressiveInstCombinerLegacyPass : public FunctionPass {
-public:
-  static char ID; // Pass identification, replacement for typeid
-
-  AggressiveInstCombinerLegacyPass() : FunctionPass(ID) {
-    initializeAggressiveInstCombinerLegacyPassPass(
-        *PassRegistry::getPassRegistry());
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-
-  /// Run all expression pattern optimizations on the given /p F function.
-  ///
-  /// \param F function to optimize.
-  /// \returns true if the IR is changed.
-  bool runOnFunction(Function &F) override;
-};
-} // namespace
-
-void AggressiveInstCombinerLegacyPass::getAnalysisUsage(
-    AnalysisUsage &AU) const {
-  AU.setPreservesCFG();
-  AU.addRequired<TargetLibraryInfoWrapperPass>();
-  AU.addPreserved<AAResultsWrapperPass>();
-  AU.addPreserved<BasicAAWrapperPass>();
-  AU.addPreserved<GlobalsAAWrapperPass>();
-}
-
-bool AggressiveInstCombinerLegacyPass::runOnFunction(Function &F) {
-  auto &TLI = getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
-  auto &DL = F.getParent()->getDataLayout();
-
-  bool MadeIRChange = false;
-
-  // Handle TruncInst patterns
-  TruncInstCombine TIC(TLI, DL);
-  MadeIRChange |= TIC.run(F);
-
-  // TODO: add more patterns to handle...
-
-  return MadeIRChange;
-}
-
-PreservedAnalyses AggressiveInstCombinePass::run(Function &F,
-                                                 FunctionAnalysisManager &AM) {
-  auto &TLI = AM.getResult<TargetLibraryAnalysis>(F);
-  auto &DL = F.getParent()->getDataLayout();
-  bool MadeIRChange = false;
-
-  // Handle TruncInst patterns
-  TruncInstCombine TIC(TLI, DL);
-  MadeIRChange |= TIC.run(F);
-  if (!MadeIRChange)
-    // No changes, all analyses are preserved.
-    return PreservedAnalyses::all();
-
-  // Mark all the analyses that instcombine updates as preserved.
-  PreservedAnalyses PA;
-  PA.preserveSet<CFGAnalyses>();
-  PA.preserve<AAManager>();
-  PA.preserve<GlobalsAA>();
-  return PA;
-}
-
-char AggressiveInstCombinerLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(AggressiveInstCombinerLegacyPass,
-                      "aggressive-instcombine",
-                      "Combine pattern based expressions", false, false)
-INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_PASS_END(AggressiveInstCombinerLegacyPass, "aggressive-instcombine",
-                    "Combine pattern based expressions", false, false)
-
-FunctionPass *llvm::createAggressiveInstCombinerPass() {
-  return new AggressiveInstCombinerLegacyPass();
-}
-- 
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