1 //===---- AlignmentFromAssumptions.h ----------------------------*- 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 file implements a ScalarEvolution-based transformation to set 10 // the alignments of load, stores and memory intrinsics based on the truth 11 // expressions of assume intrinsics. The primary motivation is to handle 12 // complex alignment assumptions that apply to vector loads and stores that 13 // appear after vectorization and unrolling. 14 // 15 //===----------------------------------------------------------------------===// 16 17 #ifndef LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H 18 #define LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H 19 20 #include "llvm/IR/PassManager.h" 21 22 namespace llvm { 23 24 class AssumptionCache; 25 class DominatorTree; 26 class ScalarEvolution; 27 class SCEV; 28 29 struct AlignmentFromAssumptionsPass 30 : public PassInfoMixin<AlignmentFromAssumptionsPass> { 31 PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); 32 33 // Glue for old PM. 34 bool runImpl(Function &F, AssumptionCache &AC, ScalarEvolution *SE_, 35 DominatorTree *DT_); 36 37 ScalarEvolution *SE = nullptr; 38 DominatorTree *DT = nullptr; 39 40 bool extractAlignmentInfo(CallInst *I, unsigned Idx, Value *&AAPtr, 41 const SCEV *&AlignSCEV, const SCEV *&OffSCEV); 42 bool processAssumption(CallInst *I, unsigned Idx); 43 }; 44 } 45 46 #endif // LLVM_TRANSFORMS_SCALAR_ALIGNMENTFROMASSUMPTIONS_H 47
Indexes created Sun Jun 14 00:25:39 UTC 2026