1//===------- LoopBoundSplit.h - Split Loop Bound ----------------*- 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#ifndef LLVM_TRANSFORMS_SCALAR_LOOPBOUNDSPLIT_H
10#define LLVM_TRANSFORMS_SCALAR_LOOPBOUNDSPLIT_H
11
12#include "llvm/Analysis/LoopAnalysisManager.h"
13#include "llvm/IR/PassManager.h"
14
15namespace llvm {
16class LPMUpdater;
17class Loop;
18
19/// This pass transforms loops that contain a conditional branch with induction
20/// variable. For example, it transforms left code to right code:
21///
22/// newbound = min(n, c)
23/// while (iv < n) { while(iv < newbound) {
24/// A A
25/// if (iv < c) B
26/// B C
27/// C }
28/// if (iv != n) {
29/// while (iv < n) {
30/// A
31/// C
32/// }
33/// }
34class LoopBoundSplitPass : public PassInfoMixin<LoopBoundSplitPass> {
35public:
36 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
37 LoopStandardAnalysisResults &AR, LPMUpdater &U);
38};
39
40} // end namespace llvm
41
42#endif // LLVM_TRANSFORMS_SCALAR_LOOPBOUNDSPLIT_H
43

source code of llvm/include/llvm/Transforms/Scalar/LoopBoundSplit.h