include/llvm/Transforms/Scalar/DeadStoreElimination.h

   1 //===- DeadStoreElimination.h - Fast Dead Store Elimination -----*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements a trivial dead store elimination that only considers
  10 // basic-block local redundant stores.
  11 //
  12 // FIXME: This should eventually be extended to be a post-dominator tree
  13 // traversal.  Doing so would be pretty trivial.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #ifndef LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H
  18 #define LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H
  19
  20 #include "llvm/IR/PassManager.h"
  21
  22 namespace llvm {
  23
  24 class Function;
  25
  26 /// This class implements a trivial dead store elimination. We consider
  27 /// only the redundant stores that are local to a single Basic Block.
  28 class DSEPass : public PassInfoMixin<DSEPass> {
  29 public:
  30   PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);
  31 };
  32
  33 } // end namespace llvm
  34
  35 #endif // LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H