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 | |