1 //===- LoopStrengthReduce.h - Loop Strength Reduce Pass ---------*- 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 transformation analyzes and transforms the induction variables (and 10 // computations derived from them) into forms suitable for efficient execution 11 // on the target. 12 // 13 // This pass performs a strength reduction on array references inside loops that 14 // have as one or more of their components the loop induction variable, it 15 // rewrites expressions to take advantage of scaled-index addressing modes 16 // available on the target, and it performs a variety of other optimizations 17 // related to loop induction variables. 18 // 19 //===----------------------------------------------------------------------===// 20 21 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H 22 #define LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H 23 24 #include "llvm/Analysis/LoopAnalysisManager.h" 25 #include "llvm/IR/PassManager.h" 26 27 namespace llvm { 28 29 class Loop; 30 class LPMUpdater; 31 32 /// Performs Loop Strength Reduce Pass. 33 class LoopStrengthReducePass : public PassInfoMixin<LoopStrengthReducePass> { 34 public: 35 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, 36 LoopStandardAnalysisResults &AR, LPMUpdater &U); 37 }; 38 39 } // end namespace llvm 40 41 #endif // LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H 42
Indexes created Sat Sep 26 00:25:34 UTC 2026