| //===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Loop SimplifyCFG Pass. This pass is responsible for |
| // basic loop CFG cleanup, primarily to assist other loop passes. If you |
| // encounter a noncanonical CFG construct that causes another loop pass to |
| // perform suboptimally, this is the place to fix it up. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H |
| #define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H |
| |
| #include "llvm/Analysis/LoopInfo.h" |
| #include "llvm/IR/PassManager.h" |
| #include "llvm/Transforms/Scalar/LoopPassManager.h" |
| |
| namespace llvm { |
| |
| /// Performs basic CFG simplifications to assist other loop passes. |
| class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> { |
| public: |
| PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, |
| LoopStandardAnalysisResults &AR, LPMUpdater &U); |
| }; |
| } // end namespace llvm |
| |
| #endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H |