1//===- ArgumentPromotion.h - Promote by-reference arguments -----*- 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#ifndef LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H 10#define LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H 11 12#include "llvm/Analysis/CGSCCPassManager.h" 13#include "llvm/Analysis/LazyCallGraph.h" 14#include "llvm/IR/PassManager.h" 15 16namespace llvm { 17 18/// Argument promotion pass. 19/// 20/// This pass walks the functions in each SCC and for each one tries to 21/// transform it and all of its callers to replace indirect arguments with 22/// direct (by-value) arguments. 23class ArgumentPromotionPass : public PassInfoMixin<ArgumentPromotionPass> { 24 unsigned MaxElements; 25 26public: 27 ArgumentPromotionPass(unsigned MaxElements = 3u) : MaxElements(MaxElements) {} 28 29 PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM, 30 LazyCallGraph &CG, CGSCCUpdateResult &UR); 31}; 32 33} // end namespace llvm 34 35#endif // LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H 36