1 //===- MergeFunctions.h - Merge Identical Functions -------------*- 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 // 9 // This pass transforms simple global variables that never have their address 10 // taken. If obviously true, it marks read/write globals as constant, deletes 11 // variables only stored to, etc. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TRANSFORMS_IPO_MERGEFUNCTIONS_H 16 #define LLVM_TRANSFORMS_IPO_MERGEFUNCTIONS_H 17 18 #include "llvm/IR/PassManager.h" 19 #include "llvm/Support/Compiler.h" 20 21 namespace llvm { 22 23 class Module; 24 class Function; 25 26 /// Merge identical functions. 27 class MergeFunctionsPass : public PassInfoMixin<MergeFunctionsPass> { 28 public: 29 LLVM_ABI PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM); 30 31 LLVM_ABI static bool runOnModule(Module &M); 32 LLVM_ABI static DenseMap<Function *, Function *> 33 runOnFunctions(ArrayRef<Function *> F); 34 }; 35 36 } // end namespace llvm 37 38 #endif // LLVM_TRANSFORMS_IPO_MERGEFUNCTIONS_H 39