1 //===- LowerConstantIntrinsics.h - Lower constant int. 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 /// \file 9 /// 10 /// The header file for the LowerConstantIntrinsics pass as used by the new pass 11 /// manager. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TRANSFORMS_SCALAR_LOWERCONSTANTINTRINSICS_H 16 #define LLVM_TRANSFORMS_SCALAR_LOWERCONSTANTINTRINSICS_H 17 18 #include "llvm/IR/PassManager.h" 19 20 namespace llvm { 21 22 class DominatorTree; 23 class Function; 24 class TargetLibraryInfo; 25 26 bool lowerConstantIntrinsics(Function &F, const TargetLibraryInfo &TLI, 27 DominatorTree *DT); 28 29 struct LowerConstantIntrinsicsPass : 30 PassInfoMixin<LowerConstantIntrinsicsPass> { 31 public: 32 explicit LowerConstantIntrinsicsPass() = default; 33 34 /// Run the pass over the function. 35 /// 36 /// This will lower all remaining 'objectsize' and 'is.constant'` 37 /// intrinsic calls in this function, even when the argument has no known 38 /// size or is not a constant respectively. The resulting constant is 39 /// propagated and conditional branches are resolved where possible. 40 /// This complements the Instruction Simplification and 41 /// Instruction Combination passes of the optimized pass chain. 42 PreservedAnalyses run(Function &F, FunctionAnalysisManager &); 43 }; 44 45 } 46 47 #endif 48