1 //===-- AlwaysInliner.h - Pass to inline "always_inline" functions --------===//
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 ///
9 /// \file
10 /// Provides passes to inlining "always_inline" functions.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_TRANSFORMS_IPO_ALWAYSINLINER_H
15 #define LLVM_TRANSFORMS_IPO_ALWAYSINLINER_H
16 
17 #include "llvm/IR/PassManager.h"
18 
19 namespace llvm {
20 
21 class Module;
22 class Pass;
23 
24 /// Inlines functions marked as "always_inline".
25 ///
26 /// Note that this does not inline call sites marked as always_inline and does
27 /// not delete the functions even when all users are inlined. The normal
28 /// inliner should be used to handle call site inlining, this pass's goal is to
29 /// be the simplest possible pass to remove always_inline function definitions'
30 /// uses by inlining them. The \c GlobalDCE pass can be used to remove these
31 /// functions once all users are gone.
32 class AlwaysInlinerPass : public PassInfoMixin<AlwaysInlinerPass> {
33   bool InsertLifetime;
34 
35 public:
36   AlwaysInlinerPass(bool InsertLifetime = true)
37       : InsertLifetime(InsertLifetime) {}
38 
39   PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
40   static bool isRequired() { return true; }
41 };
42 
43 /// Create a legacy pass manager instance of a pass to inline and remove
44 /// functions marked as "always_inline".
45 Pass *createAlwaysInlinerLegacyPass(bool InsertLifetime = true);
46 
47 }
48 
49 #endif // LLVM_TRANSFORMS_IPO_ALWAYSINLINER_H
50