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/Function.h" 19 #include "llvm/IR/PassManager.h" 20 21 namespace llvm { 22 23 struct LowerConstantIntrinsicsPass : 24 PassInfoMixin<LowerConstantIntrinsicsPass> { 25 public: LowerConstantIntrinsicsPassLowerConstantIntrinsicsPass26 explicit LowerConstantIntrinsicsPass() {} 27 28 /// Run the pass over the function. 29 /// 30 /// This will lower all remaining 'objectsize' and 'is.constant'` 31 /// intrinsic calls in this function, even when the argument has no known 32 /// size or is not a constant respectively. The resulting constant is 33 /// propagated and conditional branches are resolved where possible. 34 /// This complements the Instruction Simplification and 35 /// Instruction Combination passes of the optimized pass chain. 36 PreservedAnalyses run(Function &F, FunctionAnalysisManager &); 37 }; 38 39 } 40 41 #endif 42