1 //===- IndVarSimplify.h - Induction Variable Simplification -----*- 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 provides the interface for the Induction Variable
10 // Simplification pass.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H
15 #define LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H
16 
17 #include "llvm/Analysis/LoopAnalysisManager.h"
18 #include "llvm/IR/PassManager.h"
19 
20 namespace llvm {
21 
22 class Loop;
23 class LPMUpdater;
24 
25 class IndVarSimplifyPass : public PassInfoMixin<IndVarSimplifyPass> {
26   /// Perform IV widening during the pass.
27   bool WidenIndVars;
28 
29 public:
WidenIndVars(WidenIndVars)30   IndVarSimplifyPass(bool WidenIndVars = true) : WidenIndVars(WidenIndVars) {}
31   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
32                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
33 };
34 
35 } // end namespace llvm
36 
37 #endif // LLVM_TRANSFORMS_SCALAR_INDVARSIMPLIFY_H
38