1 files changed, 0 insertions, 80 deletions
diff --git a/gnu/llvm/lib/Transforms/Scalar/FlattenCFGPass.cpp b/gnu/llvm/lib/Transforms/Scalar/FlattenCFGPass.cpp
deleted file mode 100644
index 117b19fb8a4..00000000000
--- a/gnu/llvm/lib/Transforms/Scalar/FlattenCFGPass.cpp
+++ /dev/null
@@ -1,80 +0,0 @@
-//===- FlattenCFGPass.cpp - CFG Flatten Pass ----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements flattening of CFG.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Transforms/Utils/Local.h"
-#include "llvm/IR/CFG.h"
-#include "llvm/Pass.h"
-#include "llvm/Transforms/Scalar.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "flattencfg"
-
-namespace {
-struct FlattenCFGPass : public FunctionPass {
-  static char ID; // Pass identification, replacement for typeid
-public:
-  FlattenCFGPass() : FunctionPass(ID) {
-    initializeFlattenCFGPassPass(*PassRegistry::getPassRegistry());
-  }
-  bool runOnFunction(Function &F) override;
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<AAResultsWrapperPass>();
-  }
-
-private:
-  AliasAnalysis *AA;
-};
-}
-
-char FlattenCFGPass::ID = 0;
-INITIALIZE_PASS_BEGIN(FlattenCFGPass, "flattencfg", "Flatten the CFG", false,
-                      false)
-INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
-INITIALIZE_PASS_END(FlattenCFGPass, "flattencfg", "Flatten the CFG", false,
-                    false)
-
-// Public interface to the FlattenCFG pass
-FunctionPass *llvm::createFlattenCFGPass() { return new FlattenCFGPass(); }
-
-/// iterativelyFlattenCFG - Call FlattenCFG on all the blocks in the function,
-/// iterating until no more changes are made.
-static bool iterativelyFlattenCFG(Function &F, AliasAnalysis *AA) {
-  bool Changed = false;
-  bool LocalChange = true;
-  while (LocalChange) {
-    LocalChange = false;
-
-    // Loop over all of the basic blocks and remove them if they are unneeded...
-    //
-    for (Function::iterator BBIt = F.begin(); BBIt != F.end();) {
-      if (FlattenCFG(&*BBIt++, AA)) {
-        LocalChange = true;
-      }
-    }
-    Changed |= LocalChange;
-  }
-  return Changed;
-}
-
-bool FlattenCFGPass::runOnFunction(Function &F) {
-  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
-  bool EverChanged = false;
-  // iterativelyFlattenCFG can make some blocks dead.
-  while (iterativelyFlattenCFG(F, AA)) {
-    removeUnreachableBlocks(F);
-    EverChanged = true;
-  }
-  return EverChanged;
-}