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 Function; 23 24 struct LowerConstantIntrinsicsPass : 25 PassInfoMixin<LowerConstantIntrinsicsPass> { 26 public: 27 explicit LowerConstantIntrinsicsPass() = default; 28 29 /// Run the pass over the function. 30 /// 31 /// This will lower all remaining 'objectsize' and 'is.constant'` 32 /// intrinsic calls in this function, even when the argument has no known 33 /// size or is not a constant respectively. The resulting constant is 34 /// propagated and conditional branches are resolved where possible. 35 /// This complements the Instruction Simplification and 36 /// Instruction Combination passes of the optimized pass chain. 37 PreservedAnalyses run(Function &F, FunctionAnalysisManager &); 38 }; 39 40 } 41 42 #endif 43