xref: /freebsd/contrib/llvm-project/llvm/lib/Transforms/Utils/LowerIFunc.cpp (revision f81cdf24ba5436367377f7c8e8f51f6df2a75ca7)
1 //===- LowerIFunc.cpp -----------------------------------------------------===//
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 // This file implements replacing calls to ifuncs by introducing indirect calls.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/Transforms/Utils/LowerIFunc.h"
14 #include "llvm/IR/Module.h"
15 #include "llvm/Pass.h"
16 #include "llvm/Transforms/Utils/ModuleUtils.h"
17 
18 using namespace llvm;
19 
20 /// Replace all call users of ifuncs in the module.
21 PreservedAnalyses LowerIFuncPass::run(Module &M, ModuleAnalysisManager &AM) {
22   if (M.ifunc_empty())
23     return PreservedAnalyses::all();
24 
25   lowerGlobalIFuncUsersAsGlobalCtor(M, {});
26   return PreservedAnalyses::none();
27 }
28