LowerConstantIntrinsics.h revision 360784 
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
21namespace llvm {
22
23struct LowerConstantIntrinsicsPass :
24    PassInfoMixin<LowerConstantIntrinsicsPass> {
25public:
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