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:
26   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