1 files changed, 0 insertions, 104 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp b/contrib/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
deleted file mode 100644
index 455fcbb1cf98..000000000000
--- a/contrib/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
+++ /dev/null
@@ -1,104 +0,0 @@
-//===- CanonicalizeAliases.cpp - ThinLTO Support: Canonicalize Aliases ----===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// Currently this file implements partial alias canonicalization, to
-// flatten chains of aliases (also done by GlobalOpt, but not on for
-// O0 compiles). E.g.
-//  @a = alias i8, i8 *@b
-//  @b = alias i8, i8 *@g
-//
-// will be converted to:
-//  @a = alias i8, i8 *@g  <-- @a is now an alias to base object @g
-//  @b = alias i8, i8 *@g
-//
-// Eventually this file will implement full alias canonicalation, so that
-// all aliasees are private anonymous values. E.g.
-//  @a = alias i8, i8 *@g
-//  @g = global i8 0
-//
-// will be converted to:
-//  @0 = private global
-//  @a = alias i8, i8* @0
-//  @g = alias i8, i8* @0
-//
-// This simplifies optimization and ThinLTO linking of the original symbols.
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Utils/CanonicalizeAliases.h"
-
-#include "llvm/IR/Operator.h"
-#include "llvm/IR/ValueHandle.h"
-
-using namespace llvm;
-
-namespace {
-
-static Constant *canonicalizeAlias(Constant *C, bool &Changed) {
-  if (auto *GA = dyn_cast<GlobalAlias>(C)) {
-    auto *NewAliasee = canonicalizeAlias(GA->getAliasee(), Changed);
-    if (NewAliasee != GA->getAliasee()) {
-      GA->setAliasee(NewAliasee);
-      Changed = true;
-    }
-    return NewAliasee;
-  }
-
-  auto *CE = dyn_cast<ConstantExpr>(C);
-  if (!CE)
-    return C;
-
-  std::vector<Constant *> Ops;
-  for (Use &U : CE->operands())
-    Ops.push_back(canonicalizeAlias(cast<Constant>(U), Changed));
-  return CE->getWithOperands(Ops);
-}
-
-/// Convert aliases to canonical form.
-static bool canonicalizeAliases(Module &M) {
-  bool Changed = false;
-  for (auto &GA : M.aliases())
-    canonicalizeAlias(&GA, Changed);
-  return Changed;
-}
-
-// Legacy pass that canonicalizes aliases.
-class CanonicalizeAliasesLegacyPass : public ModulePass {
-
-public:
-  /// Pass identification, replacement for typeid
-  static char ID;
-
-  /// Specify pass name for debug output
-  StringRef getPassName() const override { return "Canonicalize Aliases"; }
-
-  explicit CanonicalizeAliasesLegacyPass() : ModulePass(ID) {}
-
-  bool runOnModule(Module &M) override { return canonicalizeAliases(M); }
-};
-char CanonicalizeAliasesLegacyPass::ID = 0;
-
-} // anonymous namespace
-
-PreservedAnalyses CanonicalizeAliasesPass::run(Module &M,
-                                               ModuleAnalysisManager &AM) {
-  if (!canonicalizeAliases(M))
-    return PreservedAnalyses::all();
-
-  return PreservedAnalyses::none();
-}
-
-INITIALIZE_PASS_BEGIN(CanonicalizeAliasesLegacyPass, "canonicalize-aliases",
-                      "Canonicalize aliases", false, false)
-INITIALIZE_PASS_END(CanonicalizeAliasesLegacyPass, "canonicalize-aliases",
-                    "Canonicalize aliases", false, false)
-
-namespace llvm {
-ModulePass *createCanonicalizeAliasesPass() {
-  return new CanonicalizeAliasesLegacyPass();
-}
-} // namespace llvm