LLVM 19.0.0git
LoopBoundSplit.h
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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
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:
38};
39
40} // end namespace llvm
41
42#endif // LLVM_TRANSFORMS_SCALAR_LOOPBOUNDSPLIT_H
This header provides classes for managing per-loop analyses.
This header defines various interfaces for pass management in LLVM.
A container for analyses that lazily runs them and caches their results.
Definition: PassManager.h:348
This class provides an interface for updating the loop pass manager based on mutations to the loop ne...
This pass transforms loops that contain a conditional branch with induction variable.
PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, LoopStandardAnalysisResults &AR, LPMUpdater &U)
Represents a single loop in the control flow graph.
Definition: LoopInfo.h:44
A set of analyses that are preserved following a run of a transformation pass.
Definition: Analysis.h:109
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
The adaptor from a function pass to a loop pass computes these analyses and makes them available to t...
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:91