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File indexing completed on 2026-05-10 08:44:42
0001 //===- LoopStrengthReduce.h - Loop Strength Reduce Pass ---------*- C++ -*-===// 0002 // 0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 0004 // See https://llvm.org/LICENSE.txt for license information. 0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 0006 // 0007 //===----------------------------------------------------------------------===// 0008 // 0009 // This transformation analyzes and transforms the induction variables (and 0010 // computations derived from them) into forms suitable for efficient execution 0011 // on the target. 0012 // 0013 // This pass performs a strength reduction on array references inside loops that 0014 // have as one or more of their components the loop induction variable, it 0015 // rewrites expressions to take advantage of scaled-index addressing modes 0016 // available on the target, and it performs a variety of other optimizations 0017 // related to loop induction variables. 0018 // 0019 //===----------------------------------------------------------------------===// 0020 0021 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H 0022 #define LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H 0023 0024 #include "llvm/Analysis/LoopAnalysisManager.h" 0025 #include "llvm/IR/PassManager.h" 0026 0027 namespace llvm { 0028 0029 class Loop; 0030 class LPMUpdater; 0031 0032 /// Performs Loop Strength Reduce Pass. 0033 class LoopStrengthReducePass : public PassInfoMixin<LoopStrengthReducePass> { 0034 public: 0035 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, 0036 LoopStandardAnalysisResults &AR, LPMUpdater &U); 0037 }; 0038 0039 } // end namespace llvm 0040 0041 #endif // LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H
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