1 //===- DeadStoreElimination.h - Fast Dead Store Elimination -----*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements a trivial dead store elimination that only considers
11 // basic-block local redundant stores.
12 //
13 // FIXME: This should eventually be extended to be a post-dominator tree
14 // traversal.  Doing so would be pretty trivial.
15 //
16 //===----------------------------------------------------------------------===//
17 
18 #ifndef LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H
19 #define LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H
20 
21 #include "llvm/IR/PassManager.h"
22 
23 namespace llvm {
24 
25 class Function;
26 
27 /// This class implements a trivial dead store elimination. We consider
28 /// only the redundant stores that are local to a single Basic Block.
29 class DSEPass : public PassInfoMixin<DSEPass> {
30 public:
31   PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);
32 };
33 
34 } // end namespace llvm
35 
36 #endif // LLVM_TRANSFORMS_SCALAR_DEADSTOREELIMINATION_H
37