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