47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
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//===---- AlignmentFromAssumptions.h ----------------------------*- 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 file implements a ScalarEvolution-based transformation to set
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// the alignments of load, stores and memory intrinsics based on the truth
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// expressions of assume intrinsics. The primary motivation is to handle
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// complex alignment assumptions that apply to vector loads and stores that
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// appear after vectorization and unrolling.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H
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#define LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class AssumptionCache;
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class DominatorTree;
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class ScalarEvolution;
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class SCEV;
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struct AlignmentFromAssumptionsPass
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: public PassInfoMixin<AlignmentFromAssumptionsPass> {
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
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// Glue for old PM.
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bool runImpl(Function &F, AssumptionCache &AC, ScalarEvolution *SE_,
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DominatorTree *DT_);
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ScalarEvolution *SE = nullptr;
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DominatorTree *DT = nullptr;
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bool extractAlignmentInfo(CallInst *I, unsigned Idx, Value *&AAPtr,
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const SCEV *&AlignSCEV, const SCEV *&OffSCEV);
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bool processAssumption(CallInst *I, unsigned Idx);
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};
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}
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#endif // LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H
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