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42 lines
1.5 KiB
C++
42 lines
1.5 KiB
C++
//===- LoopStrengthReduce.h - Loop Strength Reduce Pass ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This transformation analyzes and transforms the induction variables (and
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// computations derived from them) into forms suitable for efficient execution
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// on the target.
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//
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// This pass performs a strength reduction on array references inside loops that
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// have as one or more of their components the loop induction variable, it
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// rewrites expressions to take advantage of scaled-index addressing modes
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// available on the target, and it performs a variety of other optimizations
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// related to loop induction variables.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H
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#define LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H
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#include "llvm/Analysis/LoopAnalysisManager.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Loop;
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class LPMUpdater;
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/// Performs Loop Strength Reduce Pass.
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class LoopStrengthReducePass : public PassInfoMixin<LoopStrengthReducePass> {
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public:
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PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
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LoopStandardAnalysisResults &AR, LPMUpdater &U);
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_SCALAR_LOOPSTRENGTHREDUCE_H
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